diff options
| author | Srinivasarao P <spathi@codeaurora.org> | 2018-01-09 15:59:02 +0530 |
|---|---|---|
| committer | Srinivasarao P <spathi@codeaurora.org> | 2018-01-18 12:45:07 +0530 |
| commit | dd4f1e35fa5f5a452d34e1fcc681472f2011f93d (patch) | |
| tree | 8f7c973e9920c4df577c5b7093da541ce12da7d1 | |
| parent | 33260fbfb3632f876669fa815db1edb6d688ace3 (diff) | |
| parent | 2fea0397a8e708952a22918bd89cce28b3087c11 (diff) | |
Merge android-4.4.106 (2fea039) into msm-4.4
* refs/heads/tmp-2fea039
Linux 4.4.106
usb: gadget: ffs: Forbid usb_ep_alloc_request from sleeping
arm: KVM: Fix VTTBR_BADDR_MASK BUG_ON off-by-one
Revert "x86/mm/pat: Ensure cpa->pfn only contains page frame numbers"
Revert "x86/efi: Hoist page table switching code into efi_call_virt()"
Revert "x86/efi: Build our own page table structures"
net/packet: fix a race in packet_bind() and packet_notifier()
packet: fix crash in fanout_demux_rollover()
sit: update frag_off info
rds: Fix NULL pointer dereference in __rds_rdma_map
tipc: fix memory leak in tipc_accept_from_sock()
more bio_map_user_iov() leak fixes
s390: always save and restore all registers on context switch
ipmi: Stop timers before cleaning up the module
audit: ensure that 'audit=1' actually enables audit for PID 1
ipvlan: fix ipv6 outbound device
afs: Connect up the CB.ProbeUuid
IB/mlx5: Assign send CQ and recv CQ of UMR QP
IB/mlx4: Increase maximal message size under UD QP
xfrm: Copy policy family in clone_policy
jump_label: Invoke jump_label_test() via early_initcall()
atm: horizon: Fix irq release error
sctp: use the right sk after waking up from wait_buf sleep
sctp: do not free asoc when it is already dead in sctp_sendmsg
sparc64/mm: set fields in deferred pages
block: wake up all tasks blocked in get_request()
sunrpc: Fix rpc_task_begin trace point
NFS: Fix a typo in nfs_rename()
dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0
lib/genalloc.c: make the avail variable an atomic_long_t
route: update fnhe_expires for redirect when the fnhe exists
route: also update fnhe_genid when updating a route cache
mac80211_hwsim: Fix memory leak in hwsim_new_radio_nl()
kbuild: pkg: use --transform option to prefix paths in tar
EDAC, i5000, i5400: Fix definition of NRECMEMB register
EDAC, i5000, i5400: Fix use of MTR_DRAM_WIDTH macro
powerpc/powernv/ioda2: Gracefully fail if too many TCE levels requested
drm/amd/amdgpu: fix console deadlock if late init failed
axonram: Fix gendisk handling
netfilter: don't track fragmented packets
zram: set physical queue limits to avoid array out of bounds accesses
i2c: riic: fix restart condition
crypto: s5p-sss - Fix completing crypto request in IRQ handler
ipv6: reorder icmpv6_init() and ip6_mr_init()
bnx2x: do not rollback VF MAC/VLAN filters we did not configure
bnx2x: fix possible overrun of VFPF multicast addresses array
bnx2x: prevent crash when accessing PTP with interface down
spi_ks8995: fix "BUG: key accdaa28 not in .data!"
arm64: KVM: Survive unknown traps from guests
arm: KVM: Survive unknown traps from guests
KVM: nVMX: reset nested_run_pending if the vCPU is going to be reset
irqchip/crossbar: Fix incorrect type of register size
scsi: lpfc: Fix crash during Hardware error recovery on SLI3 adapters
workqueue: trigger WARN if queue_delayed_work() is called with NULL @wq
libata: drop WARN from protocol error in ata_sff_qc_issue()
kvm: nVMX: VMCLEAR should not cause the vCPU to shut down
USB: gadgetfs: Fix a potential memory leak in 'dev_config()'
usb: gadget: configs: plug memory leak
HID: chicony: Add support for another ASUS Zen AiO keyboard
gpio: altera: Use handle_level_irq when configured as a level_high
ARM: OMAP2+: Release device node after it is no longer needed.
ARM: OMAP2+: Fix device node reference counts
module: set __jump_table alignment to 8
selftest/powerpc: Fix false failures for skipped tests
x86/hpet: Prevent might sleep splat on resume
ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure
vti6: Don't report path MTU below IPV6_MIN_MTU.
Revert "s390/kbuild: enable modversions for symbols exported from asm"
Revert "spi: SPI_FSL_DSPI should depend on HAS_DMA"
Revert "drm/armada: Fix compile fail"
mm: drop unused pmdp_huge_get_and_clear_notify()
thp: fix MADV_DONTNEED vs. numa balancing race
thp: reduce indentation level in change_huge_pmd()
scsi: storvsc: Workaround for virtual DVD SCSI version
ARM: avoid faulting on qemu
ARM: BUG if jumping to usermode address in kernel mode
arm64: fpsimd: Prevent registers leaking from dead tasks
KVM: VMX: remove I/O port 0x80 bypass on Intel hosts
arm64: KVM: fix VTTBR_BADDR_MASK BUG_ON off-by-one
media: dvb: i2c transfers over usb cannot be done from stack
drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU
drm: extra printk() wrapper macros
kdb: Fix handling of kallsyms_symbol_next() return value
s390: fix compat system call table
iommu/vt-d: Fix scatterlist offset handling
ALSA: usb-audio: Add check return value for usb_string()
ALSA: usb-audio: Fix out-of-bound error
ALSA: seq: Remove spurious WARN_ON() at timer check
ALSA: pcm: prevent UAF in snd_pcm_info
x86/PCI: Make broadcom_postcore_init() check acpi_disabled
X.509: reject invalid BIT STRING for subjectPublicKey
ASN.1: check for error from ASN1_OP_END__ACT actions
ASN.1: fix out-of-bounds read when parsing indefinite length item
efi: Move some sysfs files to be read-only by root
scsi: libsas: align sata_device's rps_resp on a cacheline
isa: Prevent NULL dereference in isa_bus driver callbacks
hv: kvp: Avoid reading past allocated blocks from KVP file
virtio: release virtio index when fail to device_register
can: usb_8dev: cancel urb on -EPIPE and -EPROTO
can: esd_usb2: cancel urb on -EPIPE and -EPROTO
can: ems_usb: cancel urb on -EPIPE and -EPROTO
can: kvaser_usb: cancel urb on -EPIPE and -EPROTO
can: kvaser_usb: ratelimit errors if incomplete messages are received
can: kvaser_usb: Fix comparison bug in kvaser_usb_read_bulk_callback()
can: kvaser_usb: free buf in error paths
can: ti_hecc: Fix napi poll return value for repoll
BACKPORT: irq: Make the irqentry text section unconditional
UPSTREAM: arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections
UPSTREAM: x86, kasan, ftrace: Put APIC interrupt handlers into .irqentry.text
UPSTREAM: kasan: make get_wild_bug_type() static
UPSTREAM: kasan: separate report parts by empty lines
UPSTREAM: kasan: improve double-free report format
UPSTREAM: kasan: print page description after stacks
UPSTREAM: kasan: improve slab object description
UPSTREAM: kasan: change report header
UPSTREAM: kasan: simplify address description logic
UPSTREAM: kasan: change allocation and freeing stack traces headers
UPSTREAM: kasan: unify report headers
UPSTREAM: kasan: introduce helper functions for determining bug type
BACKPORT: kasan: report only the first error by default
UPSTREAM: kasan: fix races in quarantine_remove_cache()
UPSTREAM: kasan: resched in quarantine_remove_cache()
BACKPORT: kasan, sched/headers: Uninline kasan_enable/disable_current()
BACKPORT: kasan: drain quarantine of memcg slab objects
UPSTREAM: kasan: eliminate long stalls during quarantine reduction
UPSTREAM: kasan: support panic_on_warn
UPSTREAM: x86/suspend: fix false positive KASAN warning on suspend/resume
UPSTREAM: kasan: support use-after-scope detection
UPSTREAM: kasan/tests: add tests for user memory access functions
UPSTREAM: mm, kasan: add a ksize() test
UPSTREAM: kasan: test fix: warn if the UAF could not be detected in kmalloc_uaf2
UPSTREAM: kasan: modify kmalloc_large_oob_right(), add kmalloc_pagealloc_oob_right()
UPSTREAM: lib/stackdepot: export save/fetch stack for drivers
UPSTREAM: lib/stackdepot.c: bump stackdepot capacity from 16MB to 128MB
BACKPORT: kprobes: Unpoison stack in jprobe_return() for KASAN
UPSTREAM: kasan: remove the unnecessary WARN_ONCE from quarantine.c
UPSTREAM: kasan: avoid overflowing quarantine size on low memory systems
UPSTREAM: kasan: improve double-free reports
BACKPORT: mm: coalesce split strings
BACKPORT: mm/kasan: get rid of ->state in struct kasan_alloc_meta
UPSTREAM: mm/kasan: get rid of ->alloc_size in struct kasan_alloc_meta
UPSTREAM: mm: kasan: remove unused 'reserved' field from struct kasan_alloc_meta
UPSTREAM: mm/kasan, slub: don't disable interrupts when object leaves quarantine
UPSTREAM: mm/kasan: don't reduce quarantine in atomic contexts
UPSTREAM: mm/kasan: fix corruptions and false positive reports
UPSTREAM: lib/stackdepot.c: use __GFP_NOWARN for stack allocations
BACKPORT: mm, kasan: switch SLUB to stackdepot, enable memory quarantine for SLUB
UPSTREAM: kasan/quarantine: fix bugs on qlist_move_cache()
UPSTREAM: mm: mempool: kasan: don't poot mempool objects in quarantine
UPSTREAM: kasan: change memory hot-add error messages to info messages
BACKPORT: mm/kasan: add API to check memory regions
UPSTREAM: mm/kasan: print name of mem[set,cpy,move]() caller in report
UPSTREAM: mm: kasan: initial memory quarantine implementation
UPSTREAM: lib/stackdepot: avoid to return 0 handle
UPSTREAM: lib/stackdepot.c: allow the stack trace hash to be zero
UPSTREAM: mm, kasan: fix compilation for CONFIG_SLAB
BACKPORT: mm, kasan: stackdepot implementation. Enable stackdepot for SLAB
BACKPORT: mm, kasan: add GFP flags to KASAN API
UPSTREAM: mm, kasan: SLAB support
UPSTREAM: mm/slab: align cache size first before determination of OFF_SLAB candidate
UPSTREAM: mm/slab: use more appropriate condition check for debug_pagealloc
UPSTREAM: mm/slab: factor out debugging initialization in cache_init_objs()
UPSTREAM: mm/slab: remove object status buffer for DEBUG_SLAB_LEAK
UPSTREAM: mm/slab: alternative implementation for DEBUG_SLAB_LEAK
UPSTREAM: mm/slab: clean up DEBUG_PAGEALLOC processing code
UPSTREAM: mm/slab: activate debug_pagealloc in SLAB when it is actually enabled
sched: EAS/WALT: Don't take into account of running task's util
BACKPORT: schedutil: Reset cached freq if it is not in sync with next_freq
UPSTREAM: kasan: add functions to clear stack poison
Conflicts:
arch/arm/include/asm/kvm_arm.h
arch/arm64/kernel/vmlinux.lds.S
include/linux/kasan.h
kernel/softirq.c
lib/Kconfig
lib/Kconfig.kasan
lib/Makefile
lib/stackdepot.c
mm/kasan/kasan.c
sound/usb/mixer.c
Change-Id: If70ced6da5f19be3dd92d10a8d8cd4d5841e5870
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
179 files changed, 2273 insertions, 1007 deletions
diff --git a/Documentation/kasan.txt b/Documentation/kasan.txt index aa1e0c91e368..7dd95b35cd7c 100644 --- a/Documentation/kasan.txt +++ b/Documentation/kasan.txt @@ -12,8 +12,7 @@ KASAN uses compile-time instrumentation for checking every memory access, therefore you will need a GCC version 4.9.2 or later. GCC 5.0 or later is required for detection of out-of-bounds accesses to stack or global variables. -Currently KASAN is supported only for x86_64 architecture and requires the -kernel to be built with the SLUB allocator. +Currently KASAN is supported only for x86_64 architecture. 1. Usage ======== @@ -27,7 +26,7 @@ inline are compiler instrumentation types. The former produces smaller binary the latter is 1.1 - 2 times faster. Inline instrumentation requires a GCC version 5.0 or later. -Currently KASAN works only with the SLUB memory allocator. +KASAN works with both SLUB and SLAB memory allocators. For better bug detection and nicer reporting, enable CONFIG_STACKTRACE. To disable instrumentation for specific files or directories, add a line diff --git a/MAINTAINERS b/MAINTAINERS index c34c64ce4c6f..b09e8059d7b4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6002,6 +6002,20 @@ S: Maintained F: Documentation/hwmon/k8temp F: drivers/hwmon/k8temp.c +KASAN +M: Andrey Ryabinin <aryabinin@virtuozzo.com> +R: Alexander Potapenko <glider@google.com> +R: Dmitry Vyukov <dvyukov@google.com> +L: kasan-dev@googlegroups.com +S: Maintained +F: arch/*/include/asm/kasan.h +F: arch/*/mm/kasan_init* +F: Documentation/kasan.txt +F: include/linux/kasan*.h +F: lib/test_kasan.c +F: mm/kasan/ +F: scripts/Makefile.kasan + KCONFIG M: "Yann E. MORIN" <yann.morin.1998@free.fr> L: linux-kbuild@vger.kernel.org @@ -1,6 +1,6 @@ VERSION = 4 PATCHLEVEL = 4 -SUBLEVEL = 105 +SUBLEVEL = 106 EXTRAVERSION = NAME = Blurry Fish Butt diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index b2bc8e11471d..2c16d9e7c03c 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -512,4 +512,22 @@ THUMB( orr \reg , \reg , #PSR_T_BIT ) #endif .endm + .macro bug, msg, line +#ifdef CONFIG_THUMB2_KERNEL +1: .inst 0xde02 +#else +1: .inst 0xe7f001f2 +#endif +#ifdef CONFIG_DEBUG_BUGVERBOSE + .pushsection .rodata.str, "aMS", %progbits, 1 +2: .asciz "\msg" + .popsection + .pushsection __bug_table, "aw" + .align 2 + .word 1b, 2b + .hword \line + .popsection +#endif + .endm + #endif /* __ASM_ASSEMBLER_H__ */ diff --git a/arch/arm/include/asm/exception.h b/arch/arm/include/asm/exception.h index 5abaf5bbd985..bf1991263d2d 100644 --- a/arch/arm/include/asm/exception.h +++ b/arch/arm/include/asm/exception.h @@ -7,7 +7,7 @@ #ifndef __ASM_ARM_EXCEPTION_H #define __ASM_ARM_EXCEPTION_H -#include <linux/ftrace.h> +#include <linux/interrupt.h> #define __exception __attribute__((section(".exception.text"))) #ifdef CONFIG_FUNCTION_GRAPH_TRACER diff --git a/arch/arm/include/asm/kvm_arm.h b/arch/arm/include/asm/kvm_arm.h index e22089fb44dc..98d6de177b7a 100644 --- a/arch/arm/include/asm/kvm_arm.h +++ b/arch/arm/include/asm/kvm_arm.h @@ -161,8 +161,7 @@ #else #define VTTBR_X (5 - KVM_T0SZ) #endif -#define VTTBR_BADDR_SHIFT (VTTBR_X - 1) -#define VTTBR_BADDR_MASK (((_AC(1, ULL) << (40 - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT) +#define VTTBR_BADDR_MASK (((_AC(1, ULL) << (40 - VTTBR_X)) - 1) << VTTBR_X) #define VTTBR_VMID_SHIFT _AC(48, ULL) #define VTTBR_VMID_MASK(size) (_AT(u64, (1 << size) - 1) << VTTBR_VMID_SHIFT) @@ -209,6 +208,7 @@ #define HSR_EC_IABT_HYP (0x21) #define HSR_EC_DABT (0x24) #define HSR_EC_DABT_HYP (0x25) +#define HSR_EC_MAX (0x3f) #define HSR_WFI_IS_WFE (_AC(1, UL) << 0) diff --git a/arch/arm/include/asm/traps.h b/arch/arm/include/asm/traps.h index f9e412b97fbf..24a47af4d05f 100644 --- a/arch/arm/include/asm/traps.h +++ b/arch/arm/include/asm/traps.h @@ -18,7 +18,6 @@ struct undef_hook { void register_undef_hook(struct undef_hook *hook); void unregister_undef_hook(struct undef_hook *hook); -#ifdef CONFIG_FUNCTION_GRAPH_TRACER static inline int __in_irqentry_text(unsigned long ptr) { extern char __irqentry_text_start[]; @@ -27,12 +26,6 @@ static inline int __in_irqentry_text(unsigned long ptr) return ptr >= (unsigned long)&__irqentry_text_start && ptr < (unsigned long)&__irqentry_text_end; } -#else -static inline int __in_irqentry_text(unsigned long ptr) -{ - return 0; -} -#endif static inline int in_exception_text(unsigned long ptr) { diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S index 0d22ad206d52..6d243e830516 100644 --- a/arch/arm/kernel/entry-header.S +++ b/arch/arm/kernel/entry-header.S @@ -295,6 +295,8 @@ mov r2, sp ldr r1, [r2, #\offset + S_PSR] @ get calling cpsr ldr lr, [r2, #\offset + S_PC]! @ get pc + tst r1, #PSR_I_BIT | 0x0f + bne 1f msr spsr_cxsf, r1 @ save in spsr_svc #if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_32v6K) @ We must avoid clrex due to Cortex-A15 erratum #830321 @@ -309,6 +311,7 @@ @ after ldm {}^ add sp, sp, #\offset + S_FRAME_SIZE movs pc, lr @ return & move spsr_svc into cpsr +1: bug "Returning to usermode but unexpected PSR bits set?", \@ #elif defined(CONFIG_CPU_V7M) @ V7M restore. @ Note that we don't need to do clrex here as clearing the local @@ -324,6 +327,8 @@ ldr r1, [sp, #\offset + S_PSR] @ get calling cpsr ldr lr, [sp, #\offset + S_PC] @ get pc add sp, sp, #\offset + S_SP + tst r1, #PSR_I_BIT | 0x0f + bne 1f msr spsr_cxsf, r1 @ save in spsr_svc @ We must avoid clrex due to Cortex-A15 erratum #830321 @@ -336,6 +341,7 @@ .endif add sp, sp, #S_FRAME_SIZE - S_SP movs pc, lr @ return & move spsr_svc into cpsr +1: bug "Returning to usermode but unexpected PSR bits set?", \@ #endif /* !CONFIG_THUMB2_KERNEL */ .endm diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index be2ab6d3b91f..b2e234468cb5 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -105,6 +105,7 @@ SECTIONS *(.exception.text) __exception_text_end = .; IRQENTRY_TEXT + SOFTIRQENTRY_TEXT TEXT_TEXT SCHED_TEXT LOCK_TEXT diff --git a/arch/arm/kvm/handle_exit.c b/arch/arm/kvm/handle_exit.c index 95f12b2ccdcb..f36b5b1acd1f 100644 --- a/arch/arm/kvm/handle_exit.c +++ b/arch/arm/kvm/handle_exit.c @@ -100,7 +100,19 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run) return 1; } +static int kvm_handle_unknown_ec(struct kvm_vcpu *vcpu, struct kvm_run *run) +{ + u32 hsr = kvm_vcpu_get_hsr(vcpu); + + kvm_pr_unimpl("Unknown exception class: hsr: %#08x\n", + hsr); + + kvm_inject_undefined(vcpu); + return 1; +} + static exit_handle_fn arm_exit_handlers[] = { + [0 ... HSR_EC_MAX] = kvm_handle_unknown_ec, [HSR_EC_WFI] = kvm_handle_wfx, [HSR_EC_CP15_32] = kvm_handle_cp15_32, [HSR_EC_CP15_64] = kvm_handle_cp15_64, @@ -122,13 +134,6 @@ static exit_handle_fn kvm_get_exit_handler(struct kvm_vcpu *vcpu) { u8 hsr_ec = kvm_vcpu_trap_get_class(vcpu); - if (hsr_ec >= ARRAY_SIZE(arm_exit_handlers) || - !arm_exit_handlers[hsr_ec]) { - kvm_err("Unknown exception class: hsr: %#08x\n", - (unsigned int)kvm_vcpu_get_hsr(vcpu)); - BUG(); - } - return arm_exit_handlers[hsr_ec]; } diff --git a/arch/arm/mach-omap2/gpmc-onenand.c b/arch/arm/mach-omap2/gpmc-onenand.c index 8633c703546a..2944af820558 100644 --- a/arch/arm/mach-omap2/gpmc-onenand.c +++ b/arch/arm/mach-omap2/gpmc-onenand.c @@ -367,7 +367,7 @@ static int gpmc_onenand_setup(void __iomem *onenand_base, int *freq_ptr) return ret; } -void gpmc_onenand_init(struct omap_onenand_platform_data *_onenand_data) +int gpmc_onenand_init(struct omap_onenand_platform_data *_onenand_data) { int err; struct device *dev = &gpmc_onenand_device.dev; @@ -393,15 +393,17 @@ void gpmc_onenand_init(struct omap_onenand_platform_data *_onenand_data) if (err < 0) { dev_err(dev, "Cannot request GPMC CS %d, error %d\n", gpmc_onenand_data->cs, err); - return; + return err; } gpmc_onenand_resource.end = gpmc_onenand_resource.start + ONENAND_IO_SIZE - 1; - if (platform_device_register(&gpmc_onenand_device) < 0) { + err = platform_device_register(&gpmc_onenand_device); + if (err) { dev_err(dev, "Unable to register OneNAND device\n"); gpmc_cs_free(gpmc_onenand_data->cs); - return; } + + return err; } diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index 131f8967589b..13e22a4a5a20 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -3885,16 +3885,20 @@ static struct omap_hwmod_ocp_if *omap3xxx_dss_hwmod_ocp_ifs[] __initdata = { * Return: 0 if device named @dev_name is not likely to be accessible, * or 1 if it is likely to be accessible. */ -static int __init omap3xxx_hwmod_is_hs_ip_block_usable(struct device_node *bus, - const char *dev_name) +static bool __init omap3xxx_hwmod_is_hs_ip_block_usable(struct device_node *bus, + const char *dev_name) { + struct device_node *node; + bool available; + if (!bus) - return (omap_type() == OMAP2_DEVICE_TYPE_GP) ? 1 : 0; + return omap_type() == OMAP2_DEVICE_TYPE_GP; - if (of_device_is_available(of_find_node_by_name(bus, dev_name))) - return 1; + node = of_get_child_by_name(bus, dev_name); + available = of_device_is_available(node); + of_node_put(node); - return 0; + return available; } int __init omap3xxx_hwmod_init(void) @@ -3963,15 +3967,20 @@ int __init omap3xxx_hwmod_init(void) if (h_sham && omap3xxx_hwmod_is_hs_ip_block_usable(bus, "sham")) { r = omap_hwmod_register_links(h_sham); - if (r < 0) + if (r < 0) { + of_node_put(bus); return r; + } } if (h_aes && omap3xxx_hwmod_is_hs_ip_block_usable(bus, "aes")) { r = omap_hwmod_register_links(h_aes); - if (r < 0) + if (r < 0) { + of_node_put(bus); return r; + } } + of_node_put(bus); /* * Register hwmod links specific to certain ES levels of a diff --git a/arch/arm64/include/asm/exception.h b/arch/arm64/include/asm/exception.h index 6cb7e1a6bc02..0c2eec490abf 100644 --- a/arch/arm64/include/asm/exception.h +++ b/arch/arm64/include/asm/exception.h @@ -18,7 +18,7 @@ #ifndef __ASM_EXCEPTION_H #define __ASM_EXCEPTION_H -#include <linux/ftrace.h> +#include <linux/interrupt.h> #define __exception __attribute__((section(".exception.text"))) #ifdef CONFIG_FUNCTION_GRAPH_TRACER diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index 8b709f53f874..6a889e943f4e 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -154,8 +154,7 @@ #define VTTBR_X (37 - VTCR_EL2_T0SZ_40B) #endif -#define VTTBR_BADDR_SHIFT (VTTBR_X - 1) -#define VTTBR_BADDR_MASK (((UL(1) << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT) +#define VTTBR_BADDR_MASK (((UL(1) << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_X) #define VTTBR_VMID_SHIFT (UL(48)) #define VTTBR_VMID_MASK(size) (_AT(u64, (1 << size) - 1) << VTTBR_VMID_SHIFT) diff --git a/arch/arm64/include/asm/traps.h b/arch/arm64/include/asm/traps.h index 3184cb05ea46..1d60ab1b3b11 100644 --- a/arch/arm64/include/asm/traps.h +++ b/arch/arm64/include/asm/traps.h @@ -34,7 +34,6 @@ struct undef_hook { void register_undef_hook(struct undef_hook *hook); void unregister_undef_hook(struct undef_hook *hook); -#ifdef CONFIG_FUNCTION_GRAPH_TRACER static inline int __in_irqentry_text(unsigned long ptr) { extern char __irqentry_text_start[]; @@ -43,12 +42,6 @@ static inline int __in_irqentry_text(unsigned long ptr) return ptr >= (unsigned long)&__irqentry_text_start && ptr < (unsigned long)&__irqentry_text_end; } -#else -static inline int __in_irqentry_text(unsigned long ptr) -{ - return 0; -} -#endif static inline int in_exception_text(unsigned long ptr) { diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 9918489f5af3..6d9203c78dc7 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -326,6 +326,15 @@ int copy_thread(unsigned long clone_flags, unsigned long stack_start, memset(&p->thread.cpu_context, 0, sizeof(struct cpu_context)); + /* + * In case p was allocated the same task_struct pointer as some + * other recently-exited task, make sure p is disassociated from + * any cpu that may have run that now-exited task recently. + * Otherwise we could erroneously skip reloading the FPSIMD + * registers for p. + */ + fpsimd_flush_task_state(p); + if (likely(!(p->flags & PF_KTHREAD))) { *childregs = *current_pt_regs(); childregs->regs[0] = 0; diff --git a/arch/arm64/kernel/sleep.S b/arch/arm64/kernel/sleep.S index 9e3cb29e4c50..a1ccef018538 100644 --- a/arch/arm64/kernel/sleep.S +++ b/arch/arm64/kernel/sleep.S @@ -131,7 +131,7 @@ ENTRY(_cpu_resume) #ifdef CONFIG_KASAN mov x0, sp - bl kasan_unpoison_remaining_stack + bl kasan_unpoison_task_stack_below #endif ldp x19, x20, [x29, #16] diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S index b94ad40ecf7b..96765dc2e449 100644 --- a/arch/arm64/kernel/vmlinux.lds.S +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -120,6 +120,7 @@ SECTIONS __exception_text_end = .; IRQENTRY_TEXT ENTRY_TEXT + SOFTIRQENTRY_TEXT TEXT_TEXT SCHED_TEXT LOCK_TEXT diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c index 25006a7a5316..e47f9bc71079 100644 --- a/arch/arm64/kvm/handle_exit.c +++ b/arch/arm64/kvm/handle_exit.c @@ -122,7 +122,19 @@ static int kvm_handle_guest_debug(struct kvm_vcpu *vcpu, struct kvm_run *run) return ret; } +static int kvm_handle_unknown_ec(struct kvm_vcpu *vcpu, struct kvm_run *run) +{ + u32 hsr = kvm_vcpu_get_hsr(vcpu); + + kvm_pr_unimpl("Unknown exception class: hsr: %#08x -- %s\n", + hsr, esr_get_class_string(hsr)); + + kvm_inject_undefined(vcpu); + return 1; +} + static exit_handle_fn arm_exit_handlers[] = { + [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, [ESR_ELx_EC_WFx] = kvm_handle_wfx, [ESR_ELx_EC_CP15_32] = kvm_handle_cp15_32, [ESR_ELx_EC_CP15_64] = kvm_handle_cp15_64, @@ -148,13 +160,6 @@ static exit_handle_fn kvm_get_exit_handler(struct kvm_vcpu *vcpu) u32 hsr = kvm_vcpu_get_hsr(vcpu); u8 hsr_ec = hsr >> ESR_ELx_EC_SHIFT; - if (hsr_ec >= ARRAY_SIZE(arm_exit_handlers) || - !arm_exit_handlers[hsr_ec]) { - kvm_err("Unknown exception class: hsr: %#08x -- %s\n", - hsr, esr_get_class_string(hsr)); - BUG(); - } - return arm_exit_handlers[hsr_ec]; } diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S index c9eec84aa258..d920b959ff3a 100644 --- a/arch/blackfin/kernel/vmlinux.lds.S +++ b/arch/blackfin/kernel/vmlinux.lds.S @@ -35,6 +35,7 @@ SECTIONS #endif LOCK_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT KPROBES_TEXT #ifdef CONFIG_ROMKERNEL __sinittext = .; diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S index 5a6e141d1641..50bc10f97bcb 100644 --- a/arch/c6x/kernel/vmlinux.lds.S +++ b/arch/c6x/kernel/vmlinux.lds.S @@ -72,6 +72,7 @@ SECTIONS SCHED_TEXT LOCK_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT KPROBES_TEXT *(.fixup) *(.gnu.warning) diff --git a/arch/metag/kernel/vmlinux.lds.S b/arch/metag/kernel/vmlinux.lds.S index e12055e88bfe..150ace92c7ad 100644 --- a/arch/metag/kernel/vmlinux.lds.S +++ b/arch/metag/kernel/vmlinux.lds.S @@ -24,6 +24,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT *(.text.*) *(.gnu.warning) } diff --git a/arch/microblaze/kernel/vmlinux.lds.S b/arch/microblaze/kernel/vmlinux.lds.S index be9488d69734..0a47f0410554 100644 --- a/arch/microblaze/kernel/vmlinux.lds.S +++ b/arch/microblaze/kernel/vmlinux.lds.S @@ -36,6 +36,7 @@ SECTIONS { LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT . = ALIGN (4) ; _etext = . ; } diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S index 2026203c41e2..261b2ce579bb 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -58,6 +58,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT *(.text.*) *(.fixup) *(.gnu.warning) diff --git a/arch/nios2/kernel/vmlinux.lds.S b/arch/nios2/kernel/vmlinux.lds.S index 326fab40a9de..e23e89539967 100644 --- a/arch/nios2/kernel/vmlinux.lds.S +++ b/arch/nios2/kernel/vmlinux.lds.S @@ -39,6 +39,7 @@ SECTIONS SCHED_TEXT LOCK_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT KPROBES_TEXT } =0 _etext = .; diff --git a/arch/openrisc/kernel/vmlinux.lds.S b/arch/openrisc/kernel/vmlinux.lds.S index 3a08b55609b6..341fc086bc17 100644 --- a/arch/openrisc/kernel/vmlinux.lds.S +++ b/arch/openrisc/kernel/vmlinux.lds.S @@ -52,6 +52,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT *(.fixup) *(.text.__*) _etext = .; diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S index 60771df10fde..75304af9f742 100644 --- a/arch/parisc/kernel/vmlinux.lds.S +++ b/arch/parisc/kernel/vmlinux.lds.S @@ -72,6 +72,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT *(.text.do_softirq) *(.text.sys_exit) *(.text.do_sigaltstack) diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index d41fd0af8980..2dd91f79de05 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -55,6 +55,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT #ifdef CONFIG_PPC32 *(.got1) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index e40d0714679e..ecb7f3220355 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -2270,6 +2270,9 @@ static long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset, level_shift = entries_shift + 3; level_shift = max_t(unsigned, level_shift, PAGE_SHIFT); + if ((level_shift - 3) * levels + page_shift >= 60) + return -EINVAL; + /* Allocate TCE table */ addr = pnv_pci_ioda2_table_do_alloc_pages(nid, level_shift, levels, tce_table_size, &offset, &total_allocated); diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c index 7a399b4d60a0..566e8fc341f3 100644 --- a/arch/powerpc/sysdev/axonram.c +++ b/arch/powerpc/sysdev/axonram.c @@ -276,7 +276,9 @@ failed: if (bank->disk->major > 0) unregister_blkdev(bank->disk->major, bank->disk->disk_name); - del_gendisk(bank->disk); + if (bank->disk->flags & GENHD_FL_UP) + del_gendisk(bank->disk); + put_disk(bank->disk); } device->dev.platform_data = NULL; if (bank->io_addr != 0) @@ -301,6 +303,7 @@ axon_ram_remove(struct platform_device *device) device_remove_file(&device->dev, &dev_attr_ecc); free_irq(bank->irq_id, device); del_gendisk(bank->disk); + put_disk(bank->disk); iounmap((void __iomem *) bank->io_addr); kfree(bank); diff --git a/arch/s390/include/asm/asm-prototypes.h b/arch/s390/include/asm/asm-prototypes.h deleted file mode 100644 index 2c3413b0ca52..000000000000 --- a/arch/s390/include/asm/asm-prototypes.h +++ /dev/null @@ -1,8 +0,0 @@ -#ifndef _ASM_S390_PROTOTYPES_H - -#include <linux/kvm_host.h> -#include <linux/ftrace.h> -#include <asm/fpu/api.h> -#include <asm-generic/asm-prototypes.h> - -#endif /* _ASM_S390_PROTOTYPES_H */ diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h index dde6b52359c5..ff2fbdafe689 100644 --- a/arch/s390/include/asm/switch_to.h +++ b/arch/s390/include/asm/switch_to.h @@ -29,17 +29,16 @@ static inline void restore_access_regs(unsigned int *acrs) } #define switch_to(prev,next,last) do { \ - if (prev->mm) { \ - save_fpu_regs(); \ - save_access_regs(&prev->thread.acrs[0]); \ - save_ri_cb(prev->thread.ri_cb); \ - } \ + /* save_fpu_regs() sets the CIF_FPU flag, which enforces \ + * a restore of the floating point / vector registers as \ + * soon as the next task returns to user space \ + */ \ + save_fpu_regs(); \ + save_access_regs(&prev->thread.acrs[0]); \ + save_ri_cb(prev->thread.ri_cb); \ update_cr_regs(next); \ - if (next->mm) { \ - set_cpu_flag(CIF_FPU); \ - restore_access_regs(&next->thread.acrs[0]); \ - restore_ri_cb(next->thread.ri_cb, prev->thread.ri_cb); \ - } \ + restore_access_regs(&next->thread.acrs[0]); \ + restore_ri_cb(next->thread.ri_cb, prev->thread.ri_cb); \ prev = __switch_to(prev,next); \ } while (0) diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index 5378c3ea1b98..a1eeaa0db8b7 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -369,10 +369,10 @@ SYSCALL(sys_recvmmsg,compat_sys_recvmmsg) SYSCALL(sys_sendmmsg,compat_sys_sendmmsg) SYSCALL(sys_socket,sys_socket) SYSCALL(sys_socketpair,compat_sys_socketpair) /* 360 */ -SYSCALL(sys_bind,sys_bind) -SYSCALL(sys_connect,sys_connect) +SYSCALL(sys_bind,compat_sys_bind) +SYSCALL(sys_connect,compat_sys_connect) SYSCALL(sys_listen,sys_listen) -SYSCALL(sys_accept4,sys_accept4) +SYSCALL(sys_accept4,compat_sys_accept4) SYSCALL(sys_getsockopt,compat_sys_getsockopt) /* 365 */ SYSCALL(sys_setsockopt,compat_sys_setsockopt) SYSCALL(sys_getsockname,compat_sys_getsockname) diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index 445657fe658c..0f41a8286378 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -28,6 +28,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT *(.fixup) *(.gnu.warning) } :text = 0x0700 diff --git a/arch/sh/kernel/vmlinux.lds.S b/arch/sh/kernel/vmlinux.lds.S index db88cbf9eafd..235a4101999f 100644 --- a/arch/sh/kernel/vmlinux.lds.S +++ b/arch/sh/kernel/vmlinux.lds.S @@ -39,6 +39,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT *(.fixup) *(.gnu.warning) _etext = .; /* End of text section */ diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S index 4a41d412dd3d..7d02b1fef025 100644 --- a/arch/sparc/kernel/vmlinux.lds.S +++ b/arch/sparc/kernel/vmlinux.lds.S @@ -52,6 +52,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT *(.gnu.warning) } = 0 _etext = .; diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 384aba109d7c..c2f376ce443b 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -2402,10 +2402,17 @@ void __init mem_init(void) { high_memory = __va(last_valid_pfn << PAGE_SHIFT); - register_page_bootmem_info(); free_all_bootmem(); /* + * Must be done after boot memory is put on freelist, because here we + * might set fields in deferred struct pages that have not yet been + * initialized, and free_all_bootmem() initializes all the reserved + * deferred pages for us. + */ + register_page_bootmem_info(); + + /* * Set up the zero page, mark it reserved, so that page count * is not manipulated when freeing the page from user ptes. */ diff --git a/arch/tile/kernel/vmlinux.lds.S b/arch/tile/kernel/vmlinux.lds.S index 0e059a0101ea..378f5d8d1ec8 100644 --- a/arch/tile/kernel/vmlinux.lds.S +++ b/arch/tile/kernel/vmlinux.lds.S @@ -45,6 +45,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT __fix_text_end = .; /* tile-cpack won't rearrange before this */ ALIGN_FUNCTION(); *(.hottext*) diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index cc0f2f5da19b..644b8b4e89a9 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -672,9 +672,15 @@ apicinterrupt3 \num trace(\sym) smp_trace(\sym) .endm #endif +/* Make sure APIC interrupt handlers end up in the irqentry section: */ +#define PUSH_SECTION_IRQENTRY .pushsection .irqentry.text, "ax" +#define POP_SECTION_IRQENTRY .popsection + .macro apicinterrupt num sym do_sym +PUSH_SECTION_IRQENTRY apicinterrupt3 \num \sym \do_sym trace_apicinterrupt \num \sym +POP_SECTION_IRQENTRY .endm #ifdef CONFIG_SMP diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index c9e6eab2075b..08b1f2f6ea50 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -3,7 +3,6 @@ #include <asm/fpu/api.h> #include <asm/pgtable.h> -#include <asm/tlb.h> /* * We map the EFI regions needed for runtime services non-contiguously, @@ -67,17 +66,6 @@ extern u64 asmlinkage efi_call(void *fp, ...); #define efi_call_phys(f, args...) efi_call((f), args) -/* - * Scratch space used for switching the pagetable in the EFI stub - */ -struct efi_scratch { - u64 r15; - u64 prev_cr3; - pgd_t *efi_pgt; - bool use_pgd; - u64 phys_stack; -} __packed; - #define efi_call_virt(f, ...) \ ({ \ efi_status_t __s; \ @@ -85,20 +73,7 @@ struct efi_scratch { efi_sync_low_kernel_mappings(); \ preempt_disable(); \ __kernel_fpu_begin(); \ - \ - if (efi_scratch.use_pgd) { \ - efi_scratch.prev_cr3 = read_cr3(); \ - write_cr3((unsigned long)efi_scratch.efi_pgt); \ - __flush_tlb_all(); \ - } \ - \ __s = efi_call((void *)efi.systab->runtime->f, __VA_ARGS__); \ - \ - if (efi_scratch.use_pgd) { \ - write_cr3(efi_scratch.prev_cr3); \ - __flush_tlb_all(); \ - } \ - \ __kernel_fpu_end(); \ preempt_enable(); \ __s; \ @@ -138,7 +113,6 @@ extern void __init efi_memory_uc(u64 addr, unsigned long size); extern void __init efi_map_region(efi_memory_desc_t *md); extern void __init efi_map_region_fixed(efi_memory_desc_t *md); extern void efi_sync_low_kernel_mappings(void); -extern int __init efi_alloc_page_tables(void); extern int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages); extern void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages); extern void __init old_map_region(efi_memory_desc_t *md); diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index b1b78ffe01d0..616ebd22ef9a 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -16,9 +16,21 @@ CFLAGS_REMOVE_ftrace.o = -pg CFLAGS_REMOVE_early_printk.o = -pg endif -KASAN_SANITIZE_head$(BITS).o := n -KASAN_SANITIZE_dumpstack.o := n -KASAN_SANITIZE_dumpstack_$(BITS).o := n +KASAN_SANITIZE_head$(BITS).o := n +KASAN_SANITIZE_dumpstack.o := n +KASAN_SANITIZE_dumpstack_$(BITS).o := n +KASAN_SANITIZE_stacktrace.o := n + +OBJECT_FILES_NON_STANDARD_head_$(BITS).o := y +OBJECT_FILES_NON_STANDARD_relocate_kernel_$(BITS).o := y +OBJECT_FILES_NON_STANDARD_mcount_$(BITS).o := y +OBJECT_FILES_NON_STANDARD_test_nx.o := y + +# If instrumentation of this dir is enabled, boot hangs during first second. +# Probably could be more selective here, but note that files related to irqs, +# boot, dumpstack/stacktrace, etc are either non-interesting or can lead to +# non-deterministic coverage. +KCOV_INSTRUMENT := n CFLAGS_irq.o := -I$(src)/../include/asm/trace diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S index 8c35df468104..48e3979d174a 100644 --- a/arch/x86/kernel/acpi/wakeup_64.S +++ b/arch/x86/kernel/acpi/wakeup_64.S @@ -107,6 +107,15 @@ ENTRY(do_suspend_lowlevel) movq pt_regs_r14(%rax), %r14 movq pt_regs_r15(%rax), %r15 +#ifdef CONFIG_KASAN + /* + * The suspend path may have poisoned some areas deeper in the stack, + * which we now need to unpoison. + */ + movq %rsp, %rdi + call kasan_unpoison_task_stack_below +#endif + xorl %eax, %eax addq $8, %rsp jmp restore_processor_state diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index acc9b8f19ca8..f48eb8eeefe2 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -353,7 +353,7 @@ static int hpet_resume(struct clock_event_device *evt, int timer) irq_domain_deactivate_irq(irq_get_irq_data(hdev->irq)); irq_domain_activate_irq(irq_get_irq_data(hdev->irq)); - disable_irq(hdev->irq); + disable_hardirq(hdev->irq); irq_set_affinity(hdev->irq, cpumask_of(hdev->cpu)); enable_irq(hdev->irq); } diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index 99d293ea2b49..3eb804335458 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -49,7 +49,7 @@ #include <linux/kdebug.h> #include <linux/kallsyms.h> #include <linux/ftrace.h> - +#include <linux/kasan.h> #include <asm/cacheflush.h> #include <asm/desc.h> #include <asm/pgtable.h> @@ -1078,6 +1078,9 @@ void jprobe_return(void) { struct kprobe_ctlblk *kcb = get_kprobe_ctlblk(); + /* Unpoison stack redzones in the frames we are going to jump over. */ + kasan_unpoison_stack_above_sp_to(kcb->jprobe_saved_sp); + asm volatile ( #ifdef CONFIG_X86_64 " xchg %%rbx,%%rsp \n" diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index fe133b710bef..1d0e36f909eb 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -101,6 +101,7 @@ SECTIONS KPROBES_TEXT ENTRY_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT *(.fixup) *(.gnu.warning) /* End of text section */ diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 253a8c8207bb..dcbafe53e2d4 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -6182,12 +6182,7 @@ static __init int hardware_setup(void) memset(vmx_vmread_bitmap, 0xff, PAGE_SIZE); memset(vmx_vmwrite_bitmap, 0xff, PAGE_SIZE); - /* - * Allow direct access to the PC debug port (it is often used for I/O - * delays, but the vmexits simply slow things down). - */ memset(vmx_io_bitmap_a, 0xff, PAGE_SIZE); - clear_bit(0x80, vmx_io_bitmap_a); memset(vmx_io_bitmap_b, 0xff, PAGE_SIZE); @@ -6929,9 +6924,8 @@ static int handle_vmoff(struct kvm_vcpu *vcpu) static int handle_vmclear(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); + u32 zero = 0; gpa_t vmptr; - struct vmcs12 *vmcs12; - struct page *page; if (!nested_vmx_check_permission(vcpu)) return 1; @@ -6942,22 +6936,9 @@ static int handle_vmclear(struct kvm_vcpu *vcpu) if (vmptr == vmx->nested.current_vmptr) nested_release_vmcs12(vmx); - page = nested_get_page(vcpu, vmptr); - if (page == NULL) { - /* - * For accurate processor emulation, VMCLEAR beyond available - * physical memory should do nothing at all. However, it is - * possible that a nested vmx bug, not a guest hypervisor bug, - * resulted in this case, so let's shut down before doing any - * more damage: - */ - kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu); - return 1; - } - vmcs12 = kmap(page); - vmcs12->launch_state = 0; - kunmap(page); - nested_release_page(page); + kvm_vcpu_write_guest(vcpu, + vmptr + offsetof(struct vmcs12, launch_state), + &zero, sizeof(zero)); nested_free_vmcs02(vmx, vmptr); @@ -10574,8 +10555,10 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason, */ static void vmx_leave_nested(struct kvm_vcpu *vcpu) { - if (is_guest_mode(vcpu)) + if (is_guest_mode(vcpu)) { + to_vmx(vcpu)->nested.nested_run_pending = 0; nested_vmx_vmexit(vcpu, -1, 0, 0); + } free_nested(to_vmx(vcpu)); } diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 1924bba0f3af..4540e8880cd9 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -911,10 +911,15 @@ static void populate_pte(struct cpa_data *cpa, pte = pte_offset_kernel(pmd, start); while (num_pages-- && start < end) { - set_pte(pte, pfn_pte(cpa->pfn, pgprot)); + + /* deal with the NX bit */ + if (!(pgprot_val(pgprot) & _PAGE_NX)) + cpa->pfn &= ~_PAGE_NX; + + set_pte(pte, pfn_pte(cpa->pfn >> PAGE_SHIFT, pgprot)); start += PAGE_SIZE; - cpa->pfn++; + cpa->pfn += PAGE_SIZE; pte++; } } @@ -970,11 +975,11 @@ static int populate_pmd(struct cpa_data *cpa, pmd = pmd_offset(pud, start); - set_pmd(pmd, __pmd(cpa->pfn << PAGE_SHIFT | _PAGE_PSE | + set_pmd(pmd, __pmd(cpa->pfn | _PAGE_PSE | massage_pgprot(pmd_pgprot))); start += PMD_SIZE; - cpa->pfn += PMD_SIZE >> PAGE_SHIFT; + cpa->pfn += PMD_SIZE; cur_pages += PMD_SIZE >> PAGE_SHIFT; } @@ -1043,11 +1048,11 @@ static int populate_pud(struct cpa_data *cpa, unsigned long start, pgd_t *pgd, * Map everything starting from the Gb boundary, possibly with 1G pages */ while (end - start >= PUD_SIZE) { - set_pud(pud, __pud(cpa->pfn << PAGE_SHIFT | _PAGE_PSE | + set_pud(pud, __pud(cpa->pfn | _PAGE_PSE | massage_pgprot(pud_pgprot))); start += PUD_SIZE; - cpa->pfn += PUD_SIZE >> PAGE_SHIFT; + cpa->pfn += PUD_SIZE; cur_pages += PUD_SIZE >> PAGE_SHIFT; pud++; } diff --git a/arch/x86/pci/broadcom_bus.c b/arch/x86/pci/broadcom_bus.c index bb461cfd01ab..526536c81ddc 100644 --- a/arch/x86/pci/broadcom_bus.c +++ b/arch/x86/pci/broadcom_bus.c @@ -97,7 +97,7 @@ static int __init broadcom_postcore_init(void) * We should get host bridge information from ACPI unless the BIOS * doesn't support it. */ - if (acpi_os_get_root_pointer()) + if (!acpi_disabled && acpi_os_get_root_pointer()) return 0; #endif diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 3c1f3cd7b2ba..ad285404ea7f 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -869,7 +869,7 @@ static void __init kexec_enter_virtual_mode(void) * This function will switch the EFI runtime services to virtual mode. * Essentially, we look through the EFI memmap and map every region that * has the runtime attribute bit set in its memory descriptor into the - * efi_pgd page table. + * ->trampoline_pgd page table using a top-down VA allocation scheme. * * The old method which used to update that memory descriptor with the * virtual address obtained from ioremap() is still supported when the @@ -879,8 +879,8 @@ static void __init kexec_enter_virtual_mode(void) * * The new method does a pagetable switch in a preemption-safe manner * so that we're in a different address space when calling a runtime - * function. For function arguments passing we do copy the PUDs of the - * kernel page table into efi_pgd prior to each call. + * function. For function arguments passing we do copy the PGDs of the + * kernel page table into ->trampoline_pgd prior to each call. * * Specially for kexec boot, efi runtime maps in previous kernel should * be passed in via setup_data. In that case runtime ranges will be mapped @@ -895,12 +895,6 @@ static void __init __efi_enter_virtual_mode(void) efi.systab = NULL; - if (efi_alloc_page_tables()) { - pr_err("Failed to allocate EFI page tables\n"); - clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); - return; - } - efi_merge_regions(); new_memmap = efi_map_regions(&count, &pg_shift); if (!new_memmap) { @@ -960,11 +954,28 @@ static void __init __efi_enter_virtual_mode(void) efi_runtime_mkexec(); /* - * We mapped the descriptor array into the EFI pagetable above - * but we're not unmapping it here because if we're running in - * EFI mixed mode we need all of memory to be accessible when - * we pass parameters to the EFI runtime services in the - * thunking code. + * We mapped the descriptor array into the EFI pagetable above but we're + * not unmapping it here. Here's why: + * + * We're copying select PGDs from the kernel page table to the EFI page + * table and when we do so and make changes to those PGDs like unmapping + * stuff from them, those changes appear in the kernel page table and we + * go boom. + * + * From setup_real_mode(): + * + * ... + * trampoline_pgd[0] = init_level4_pgt[pgd_index(__PAGE_OFFSET)].pgd; + * + * In this particular case, our allocation is in PGD 0 of the EFI page + * table but we've copied that PGD from PGD[272] of the EFI page table: + * + * pgd_index(__PAGE_OFFSET = 0xffff880000000000) = 272 + * + * where the direct memory mapping in kernel space is. + * + * new_memmap's VA comes from that direct mapping and thus clearing it, + * it would get cleared in the kernel page table too. * * efi_cleanup_page_tables(__pa(new_memmap), 1 << pg_shift); */ diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c index 58d669bc8250..ed5b67338294 100644 --- a/arch/x86/platform/efi/efi_32.c +++ b/arch/x86/platform/efi/efi_32.c @@ -38,11 +38,6 @@ * say 0 - 3G. */ -int __init efi_alloc_page_tables(void) -{ - return 0; -} - void efi_sync_low_kernel_mappings(void) {} void __init efi_dump_pagetable(void) {} int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 18dfaad71c99..a0ac0f9c307f 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -40,7 +40,6 @@ #include <asm/fixmap.h> #include <asm/realmode.h> #include <asm/time.h> -#include <asm/pgalloc.h> /* * We allocate runtime services regions bottom-up, starting from -4G, i.e. @@ -48,7 +47,16 @@ */ static u64 efi_va = EFI_VA_START; -struct efi_scratch efi_scratch; +/* + * Scratch space used for switching the pagetable in the EFI stub + */ +struct efi_scratch { + u64 r15; + u64 prev_cr3; + pgd_t *efi_pgt; + bool use_pgd; + u64 phys_stack; +} __packed; static void __init early_code_mapping_set_exec(int executable) { @@ -75,11 +83,8 @@ pgd_t * __init efi_call_phys_prolog(void) int pgd; int n_pgds; - if (!efi_enabled(EFI_OLD_MEMMAP)) { - save_pgd = (pgd_t *)read_cr3(); - write_cr3((unsigned long)efi_scratch.efi_pgt); - goto out; - } + if (!efi_enabled(EFI_OLD_MEMMAP)) + return NULL; early_code_mapping_set_exec(1); @@ -91,7 +96,6 @@ pgd_t * __init efi_call_phys_prolog(void) vaddress = (unsigned long)__va(pgd * PGDIR_SIZE); set_pgd(pgd_offset_k(pgd * PGDIR_SIZE), *pgd_offset_k(vaddress)); } -out: __flush_tlb_all(); return save_pgd; @@ -105,11 +109,8 @@ void __init efi_call_phys_epilog(pgd_t *save_pgd) int pgd_idx; int nr_pgds; - if (!efi_enabled(EFI_OLD_MEMMAP)) { - write_cr3((unsigned long)save_pgd); - __flush_tlb_all(); + if (!save_pgd) return; - } nr_pgds = DIV_ROUND_UP((max_pfn << PAGE_SHIFT) , PGDIR_SIZE); @@ -122,97 +123,27 @@ void __init efi_call_phys_epilog(pgd_t *save_pgd) early_code_mapping_set_exec(0); } -static pgd_t *efi_pgd; - -/* - * We need our own copy of the higher levels of the page tables - * because we want to avoid inserting EFI region mappings (EFI_VA_END - * to EFI_VA_START) into the standard kernel page tables. Everything - * else can be shared, see efi_sync_low_kernel_mappings(). - */ -int __init efi_alloc_page_tables(void) -{ - pgd_t *pgd; - pud_t *pud; - gfp_t gfp_mask; - - if (efi_enabled(EFI_OLD_MEMMAP)) - return 0; - - gfp_mask = GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO; - efi_pgd = (pgd_t *)__get_free_page(gfp_mask); - if (!efi_pgd) - return -ENOMEM; - - pgd = efi_pgd + pgd_index(EFI_VA_END); - - pud = pud_alloc_one(NULL, 0); - if (!pud) { - free_page((unsigned long)efi_pgd); - return -ENOMEM; - } - - pgd_populate(NULL, pgd, pud); - - return 0; -} - /* * Add low kernel mappings for passing arguments to EFI functions. */ void efi_sync_low_kernel_mappings(void) { - unsigned num_entries; - pgd_t *pgd_k, *pgd_efi; - pud_t *pud_k, *pud_efi; + unsigned num_pgds; + pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd); if (efi_enabled(EFI_OLD_MEMMAP)) return; - /* - * We can share all PGD entries apart from the one entry that - * covers the EFI runtime mapping space. - * - * Make sure the EFI runtime region mappings are guaranteed to - * only span a single PGD entry and that the entry also maps - * other important kernel regions. - */ - BUILD_BUG_ON(pgd_index(EFI_VA_END) != pgd_index(MODULES_END)); - BUILD_BUG_ON((EFI_VA_START & PGDIR_MASK) != - (EFI_VA_END & PGDIR_MASK)); - - pgd_efi = efi_pgd + pgd_index(PAGE_OFFSET); - pgd_k = pgd_offset_k(PAGE_OFFSET); + num_pgds = pgd_index(MODULES_END - 1) - pgd_index(PAGE_OFFSET); - num_entries = pgd_index(EFI_VA_END) - pgd_index(PAGE_OFFSET); - memcpy(pgd_efi, pgd_k, sizeof(pgd_t) * num_entries); - - /* - * We share all the PUD entries apart from those that map the - * EFI regions. Copy around them. - */ - BUILD_BUG_ON((EFI_VA_START & ~PUD_MASK) != 0); - BUILD_BUG_ON((EFI_VA_END & ~PUD_MASK) != 0); - - pgd_efi = efi_pgd + pgd_index(EFI_VA_END); - pud_efi = pud_offset(pgd_efi, 0); - - pgd_k = pgd_offset_k(EFI_VA_END); - pud_k = pud_offset(pgd_k, 0); - - num_entries = pud_index(EFI_VA_END); - memcpy(pud_efi, pud_k, sizeof(pud_t) * num_entries); - - pud_efi = pud_offset(pgd_efi, EFI_VA_START); - pud_k = pud_offset(pgd_k, EFI_VA_START); - - num_entries = PTRS_PER_PUD - pud_index(EFI_VA_START); - memcpy(pud_efi, pud_k, sizeof(pud_t) * num_entries); + memcpy(pgd + pgd_index(PAGE_OFFSET), + init_mm.pgd + pgd_index(PAGE_OFFSET), + sizeof(pgd_t) * num_pgds); } int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) { - unsigned long pfn, text; + unsigned long text; struct page *page; unsigned npages; pgd_t *pgd; @@ -220,8 +151,8 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) if (efi_enabled(EFI_OLD_MEMMAP)) return 0; - efi_scratch.efi_pgt = (pgd_t *)__pa(efi_pgd); - pgd = efi_pgd; + efi_scratch.efi_pgt = (pgd_t *)(unsigned long)real_mode_header->trampoline_pgd; + pgd = __va(efi_scratch.efi_pgt); /* * It can happen that the physical address of new_memmap lands in memory @@ -229,8 +160,7 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) * and ident-map those pages containing the map before calling * phys_efi_set_virtual_address_map(). */ - pfn = pa_memmap >> PAGE_SHIFT; - if (kernel_map_pages_in_pgd(pgd, pfn, pa_memmap, num_pages, _PAGE_NX)) { + if (kernel_map_pages_in_pgd(pgd, pa_memmap, pa_memmap, num_pages, _PAGE_NX)) { pr_err("Error ident-mapping new memmap (0x%lx)!\n", pa_memmap); return 1; } @@ -255,9 +185,8 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) npages = (_end - _text) >> PAGE_SHIFT; text = __pa(_text); - pfn = text >> PAGE_SHIFT; - if (kernel_map_pages_in_pgd(pgd, pfn, text, npages, 0)) { + if (kernel_map_pages_in_pgd(pgd, text >> PAGE_SHIFT, text, npages, 0)) { pr_err("Failed to map kernel text 1:1\n"); return 1; } @@ -267,20 +196,20 @@ int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages) { - kernel_unmap_pages_in_pgd(efi_pgd, pa_memmap, num_pages); + pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd); + + kernel_unmap_pages_in_pgd(pgd, pa_memmap, num_pages); } static void __init __map_region(efi_memory_desc_t *md, u64 va) { - unsigned long flags = 0; - unsigned long pfn; - pgd_t *pgd = efi_pgd; + pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd); + unsigned long pf = 0; if (!(md->attribute & EFI_MEMORY_WB)) - flags |= _PAGE_PCD; + pf |= _PAGE_PCD; - pfn = md->phys_addr >> PAGE_SHIFT; - if (kernel_map_pages_in_pgd(pgd, pfn, va, md->num_pages, flags)) + if (kernel_map_pages_in_pgd(pgd, md->phys_addr, va, md->num_pages, pf)) pr_warn("Error mapping PA 0x%llx -> VA 0x%llx!\n", md->phys_addr, va); } @@ -383,7 +312,9 @@ void __init efi_runtime_mkexec(void) void __init efi_dump_pagetable(void) { #ifdef CONFIG_EFI_PGT_DUMP - ptdump_walk_pgd_level(NULL, efi_pgd); + pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd); + + ptdump_walk_pgd_level(NULL, pgd); #endif } diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S index 32020cb8bb08..86d0f9e08dd9 100644 --- a/arch/x86/platform/efi/efi_stub_64.S +++ b/arch/x86/platform/efi/efi_stub_64.S @@ -38,6 +38,41 @@ mov %rsi, %cr0; \ mov (%rsp), %rsp + /* stolen from gcc */ + .macro FLUSH_TLB_ALL + movq %r15, efi_scratch(%rip) + movq %r14, efi_scratch+8(%rip) + movq %cr4, %r15 + movq %r15, %r14 + andb $0x7f, %r14b + movq %r14, %cr4 + movq %r15, %cr4 + movq efi_scratch+8(%rip), %r14 + movq efi_scratch(%rip), %r15 + .endm + + .macro SWITCH_PGT + cmpb $0, efi_scratch+24(%rip) + je 1f + movq %r15, efi_scratch(%rip) # r15 + # save previous CR3 + movq %cr3, %r15 + movq %r15, efi_scratch+8(%rip) # prev_cr3 + movq efi_scratch+16(%rip), %r15 # EFI pgt + movq %r15, %cr3 + 1: + .endm + + .macro RESTORE_PGT + cmpb $0, efi_scratch+24(%rip) + je 2f + movq efi_scratch+8(%rip), %r15 + movq %r15, %cr3 + movq efi_scratch(%rip), %r15 + FLUSH_TLB_ALL + 2: + .endm + ENTRY(efi_call) SAVE_XMM mov (%rsp), %rax @@ -48,8 +83,16 @@ ENTRY(efi_call) mov %r8, %r9 mov %rcx, %r8 mov %rsi, %rcx + SWITCH_PGT call *%rdi + RESTORE_PGT addq $48, %rsp RESTORE_XMM ret ENDPROC(efi_call) + + .data +ENTRY(efi_scratch) + .fill 3,8,0 + .byte 0 + .quad 0 diff --git a/block/bio.c b/block/bio.c index cc8dfb8cc82b..52b5f74c9d25 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1271,6 +1271,7 @@ struct bio *bio_map_user_iov(struct request_queue *q, int ret, offset; struct iov_iter i; struct iovec iov; + struct bio_vec *bvec; iov_for_each(iov, i, *iter) { unsigned long uaddr = (unsigned long) iov.iov_base; @@ -1315,7 +1316,12 @@ struct bio *bio_map_user_iov(struct request_queue *q, ret = get_user_pages_fast(uaddr, local_nr_pages, (iter->type & WRITE) != WRITE, &pages[cur_page]); - if (ret < local_nr_pages) { + if (unlikely(ret < local_nr_pages)) { + for (j = cur_page; j < page_limit; j++) { + if (!pages[j]) + break; + put_page(pages[j]); + } ret = -EFAULT; goto out_unmap; } @@ -1377,10 +1383,8 @@ struct bio *bio_map_user_iov(struct request_queue *q, return bio; out_unmap: - for (j = 0; j < nr_pages; j++) { - if (!pages[j]) - break; - page_cache_release(pages[j]); + bio_for_each_segment_all(bvec, bio, j) { + put_page(bvec->bv_page); } out: kfree(pages); diff --git a/block/blk-core.c b/block/blk-core.c index 56652cd209db..c33dc7297fdd 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -538,8 +538,8 @@ void blk_set_queue_dying(struct request_queue *q) blk_queue_for_each_rl(rl, q) { if (rl->rq_pool) { - wake_up(&rl->wait[BLK_RW_SYNC]); - wake_up(&rl->wait[BLK_RW_ASYNC]); + wake_up_all(&rl->wait[BLK_RW_SYNC]); + wake_up_all(&rl->wait[BLK_RW_ASYNC]); } } } diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c index 13c4e5a5fe8c..4471e7ed8c12 100644 --- a/crypto/asymmetric_keys/x509_cert_parser.c +++ b/crypto/asymmetric_keys/x509_cert_parser.c @@ -399,6 +399,8 @@ int x509_extract_key_data(void *context, size_t hdrlen, ctx->cert->pub->pkey_algo = PKEY_ALGO_RSA; /* Discard the BIT STRING metadata */ + if (vlen < 1 || *(const u8 *)value != 0) + return -EBADMSG; ctx->key = value + 1; ctx->key_size = vlen - 1; return 0; diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 7dbba387d12a..18de4c457068 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -1480,7 +1480,6 @@ unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc) break; default: - WARN_ON_ONCE(1); return AC_ERR_SYSTEM; } diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c index 527bbd595e37..d9b762a62e25 100644 --- a/drivers/atm/horizon.c +++ b/drivers/atm/horizon.c @@ -2804,7 +2804,7 @@ out: return err; out_free_irq: - free_irq(dev->irq, dev); + free_irq(irq, dev); out_free: kfree(dev); out_release: diff --git a/drivers/base/isa.c b/drivers/base/isa.c index 91dba65d7264..901d8185309e 100644 --- a/drivers/base/isa.c +++ b/drivers/base/isa.c @@ -39,7 +39,7 @@ static int isa_bus_probe(struct device *dev) { struct isa_driver *isa_driver = dev->platform_data; - if (isa_driver->probe) + if (isa_driver && isa_driver->probe) return isa_driver->probe(dev, to_isa_dev(dev)->id); return 0; @@ -49,7 +49,7 @@ static int isa_bus_remove(struct device *dev) { struct isa_driver *isa_driver = dev->platform_data; - if (isa_driver->remove) + if (isa_driver && isa_driver->remove) return isa_driver->remove(dev, to_isa_dev(dev)->id); return 0; @@ -59,7 +59,7 @@ static void isa_bus_shutdown(struct device *dev) { struct isa_driver *isa_driver = dev->platform_data; - if (isa_driver->shutdown) + if (isa_driver && isa_driver->shutdown) isa_driver->shutdown(dev, to_isa_dev(dev)->id); } @@ -67,7 +67,7 @@ static int isa_bus_suspend(struct device *dev, pm_message_t state) { struct isa_driver *isa_driver = dev->platform_data; - if (isa_driver->suspend) + if (isa_driver && isa_driver->suspend) return isa_driver->suspend(dev, to_isa_dev(dev)->id, state); return 0; @@ -77,7 +77,7 @@ static int isa_bus_resume(struct device *dev) { struct isa_driver *isa_driver = dev->platform_data; - if (isa_driver->resume) + if (isa_driver && isa_driver->resume) return isa_driver->resume(dev, to_isa_dev(dev)->id); return 0; diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index c5a2057ef668..bbdf32de1452 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1260,6 +1260,8 @@ static int zram_add(void) blk_queue_io_min(zram->disk->queue, PAGE_SIZE); blk_queue_io_opt(zram->disk->queue, PAGE_SIZE); zram->disk->queue->limits.discard_granularity = PAGE_SIZE; + zram->disk->queue->limits.max_sectors = SECTORS_PER_PAGE; + zram->disk->queue->limits.chunk_sectors = 0; blk_queue_max_discard_sectors(zram->disk->queue, UINT_MAX); /* * zram_bio_discard() will clear all logical blocks if logical block diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 4cc72fa017c7..2f9abe0d04dc 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -239,6 +239,9 @@ struct smi_info { /* The timer for this si. */ struct timer_list si_timer; + /* This flag is set, if the timer can be set */ + bool timer_can_start; + /* This flag is set, if the timer is running (timer_pending() isn't enough) */ bool timer_running; @@ -414,6 +417,8 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info) static void smi_mod_timer(struct smi_info *smi_info, unsigned long new_val) { + if (!smi_info->timer_can_start) + return; smi_info->last_timeout_jiffies = jiffies; mod_timer(&smi_info->si_timer, new_val); smi_info->timer_running = true; @@ -433,21 +438,18 @@ static void start_new_msg(struct smi_info *smi_info, unsigned char *msg, smi_info->handlers->start_transaction(smi_info->si_sm, msg, size); } -static void start_check_enables(struct smi_info *smi_info, bool start_timer) +static void start_check_enables(struct smi_info *smi_info) { unsigned char msg[2]; msg[0] = (IPMI_NETFN_APP_REQUEST << 2); msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; - if (start_timer) - start_new_msg(smi_info, msg, 2); - else - smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); + start_new_msg(smi_info, msg, 2); smi_info->si_state = SI_CHECKING_ENABLES; } -static void start_clear_flags(struct smi_info *smi_info, bool start_timer) +static void start_clear_flags(struct smi_info *smi_info) { unsigned char msg[3]; @@ -456,10 +458,7 @@ static void start_clear_flags(struct smi_info *smi_info, bool start_timer) msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD; msg[2] = WDT_PRE_TIMEOUT_INT; - if (start_timer) - start_new_msg(smi_info, msg, 3); - else - smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); + start_new_msg(smi_info, msg, 3); smi_info->si_state = SI_CLEARING_FLAGS; } @@ -494,11 +493,11 @@ static void start_getting_events(struct smi_info *smi_info) * Note that we cannot just use disable_irq(), since the interrupt may * be shared. */ -static inline bool disable_si_irq(struct smi_info *smi_info, bool start_timer) +static inline bool disable_si_irq(struct smi_info *smi_info) { if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { smi_info->interrupt_disabled = true; - start_check_enables(smi_info, start_timer); + start_check_enables(smi_info); return true; } return false; @@ -508,7 +507,7 @@ static inline bool enable_si_irq(struct smi_info *smi_info) { if ((smi_info->irq) && (smi_info->interrupt_disabled)) { smi_info->interrupt_disabled = false; - start_check_enables(smi_info, true); + start_check_enables(smi_info); return true; } return false; @@ -526,7 +525,7 @@ static struct ipmi_smi_msg *alloc_msg_handle_irq(struct smi_info *smi_info) msg = ipmi_alloc_smi_msg(); if (!msg) { - if (!disable_si_irq(smi_info, true)) + if (!disable_si_irq(smi_info)) smi_info->si_state = SI_NORMAL; } else if (enable_si_irq(smi_info)) { ipmi_free_smi_msg(msg); @@ -542,7 +541,7 @@ static void handle_flags(struct smi_info *smi_info) /* Watchdog pre-timeout */ smi_inc_stat(smi_info, watchdog_pretimeouts); - start_clear_flags(smi_info, true); + start_clear_flags(smi_info); smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT; if (smi_info->intf) ipmi_smi_watchdog_pretimeout(smi_info->intf); @@ -925,7 +924,7 @@ static enum si_sm_result smi_event_handler(struct smi_info *smi_info, * disable and messages disabled. */ if (smi_info->supports_event_msg_buff || smi_info->irq) { - start_check_enables(smi_info, true); + start_check_enables(smi_info); } else { smi_info->curr_msg = alloc_msg_handle_irq(smi_info); if (!smi_info->curr_msg) @@ -1232,6 +1231,7 @@ static int smi_start_processing(void *send_info, /* Set up the timer that drives the interface. */ setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi); + new_smi->timer_can_start = true; smi_mod_timer(new_smi, jiffies + SI_TIMEOUT_JIFFIES); /* Try to claim any interrupts. */ @@ -3434,10 +3434,12 @@ static void check_for_broken_irqs(struct smi_info *smi_info) check_set_rcv_irq(smi_info); } -static inline void wait_for_timer_and_thread(struct smi_info *smi_info) +static inline void stop_timer_and_thread(struct smi_info *smi_info) { if (smi_info->thread != NULL) kthread_stop(smi_info->thread); + + smi_info->timer_can_start = false; if (smi_info->timer_running) del_timer_sync(&smi_info->si_timer); } @@ -3635,7 +3637,7 @@ static int try_smi_init(struct smi_info *new_smi) * Start clearing the flags before we enable interrupts or the * timer to avoid racing with the timer. */ - start_clear_flags(new_smi, false); + start_clear_flags(new_smi); /* * IRQ is defined to be set when non-zero. req_events will @@ -3713,7 +3715,7 @@ static int try_smi_init(struct smi_info *new_smi) return 0; out_err_stop_timer: - wait_for_timer_and_thread(new_smi); + stop_timer_and_thread(new_smi); out_err: new_smi->interrupt_disabled = true; @@ -3919,7 +3921,7 @@ static void cleanup_one_si(struct smi_info *to_clean) */ if (to_clean->irq_cleanup) to_clean->irq_cleanup(to_clean); - wait_for_timer_and_thread(to_clean); + stop_timer_and_thread(to_clean); /* * Timeouts are stopped, now make sure the interrupts are off @@ -3930,7 +3932,7 @@ static void cleanup_one_si(struct smi_info *to_clean) poll(to_clean); schedule_timeout_uninterruptible(1); } - disable_si_irq(to_clean, false); + disable_si_irq(to_clean); while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { poll(to_clean); schedule_timeout_uninterruptible(1); diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c index f214a8755827..fd39893079d5 100644 --- a/drivers/crypto/s5p-sss.c +++ b/drivers/crypto/s5p-sss.c @@ -664,8 +664,9 @@ static int s5p_aes_probe(struct platform_device *pdev) dev_warn(dev, "feed control interrupt is not available.\n"); goto err_irq; } - err = devm_request_irq(dev, pdata->irq_fc, s5p_aes_interrupt, - IRQF_SHARED, pdev->name, pdev); + err = devm_request_threaded_irq(dev, pdata->irq_fc, NULL, + s5p_aes_interrupt, IRQF_ONESHOT, + pdev->name, pdev); if (err < 0) { dev_warn(dev, "feed control interrupt is not available.\n"); goto err_irq; diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c index 72e07e3cf718..16e0eb523439 100644 --- a/drivers/edac/i5000_edac.c +++ b/drivers/edac/i5000_edac.c @@ -227,7 +227,7 @@ #define NREC_RDWR(x) (((x)>>11) & 1) #define NREC_RANK(x) (((x)>>8) & 0x7) #define NRECMEMB 0xC0 -#define NREC_CAS(x) (((x)>>16) & 0xFFFFFF) +#define NREC_CAS(x) (((x)>>16) & 0xFFF) #define NREC_RAS(x) ((x) & 0x7FFF) #define NRECFGLOG 0xC4 #define NREEECFBDA 0xC8 @@ -371,7 +371,7 @@ struct i5000_error_info { /* These registers are input ONLY if there was a * Non-Recoverable Error */ u16 nrecmema; /* Non-Recoverable Mem log A */ - u16 nrecmemb; /* Non-Recoverable Mem log B */ + u32 nrecmemb; /* Non-Recoverable Mem log B */ }; @@ -407,7 +407,7 @@ static void i5000_get_error_info(struct mem_ctl_info *mci, NERR_FAT_FBD, &info->nerr_fat_fbd); pci_read_config_word(pvt->branchmap_werrors, NRECMEMA, &info->nrecmema); - pci_read_config_word(pvt->branchmap_werrors, + pci_read_config_dword(pvt->branchmap_werrors, NRECMEMB, &info->nrecmemb); /* Clear the error bits, by writing them back */ @@ -1293,7 +1293,7 @@ static int i5000_init_csrows(struct mem_ctl_info *mci) dimm->mtype = MEM_FB_DDR2; /* ask what device type on this row */ - if (MTR_DRAM_WIDTH(mtr)) + if (MTR_DRAM_WIDTH(mtr) == 8) dimm->dtype = DEV_X8; else dimm->dtype = DEV_X4; diff --git a/drivers/edac/i5400_edac.c b/drivers/edac/i5400_edac.c index 6ef6ad1ba16e..2ea2f32e608b 100644 --- a/drivers/edac/i5400_edac.c +++ b/drivers/edac/i5400_edac.c @@ -368,7 +368,7 @@ struct i5400_error_info { /* These registers are input ONLY if there was a Non-Rec Error */ u16 nrecmema; /* Non-Recoverable Mem log A */ - u16 nrecmemb; /* Non-Recoverable Mem log B */ + u32 nrecmemb; /* Non-Recoverable Mem log B */ }; @@ -458,7 +458,7 @@ static void i5400_get_error_info(struct mem_ctl_info *mci, NERR_FAT_FBD, &info->nerr_fat_fbd); pci_read_config_word(pvt->branchmap_werrors, NRECMEMA, &info->nrecmema); - pci_read_config_word(pvt->branchmap_werrors, + pci_read_config_dword(pvt->branchmap_werrors, NRECMEMB, &info->nrecmemb); /* Clear the error bits, by writing them back */ @@ -1207,13 +1207,14 @@ static int i5400_init_dimms(struct mem_ctl_info *mci) dimm->nr_pages = size_mb << 8; dimm->grain = 8; - dimm->dtype = MTR_DRAM_WIDTH(mtr) ? DEV_X8 : DEV_X4; + dimm->dtype = MTR_DRAM_WIDTH(mtr) == 8 ? + DEV_X8 : DEV_X4; dimm->mtype = MEM_FB_DDR2; /* * The eccc mechanism is SDDC (aka SECC), with * is similar to Chipkill. */ - dimm->edac_mode = MTR_DRAM_WIDTH(mtr) ? + dimm->edac_mode = MTR_DRAM_WIDTH(mtr) == 8 ? EDAC_S8ECD8ED : EDAC_S4ECD4ED; ndimms++; } diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index 20451c290233..fb0951b90117 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -115,8 +115,7 @@ static ssize_t systab_show(struct kobject *kobj, return str - buf; } -static struct kobj_attribute efi_attr_systab = - __ATTR(systab, 0400, systab_show, NULL); +static struct kobj_attribute efi_attr_systab = __ATTR_RO_MODE(systab, 0400); #define EFI_FIELD(var) efi.var diff --git a/drivers/firmware/efi/esrt.c b/drivers/firmware/efi/esrt.c index 22c5285f7705..0ca4c34f9441 100644 --- a/drivers/firmware/efi/esrt.c +++ b/drivers/firmware/efi/esrt.c @@ -105,7 +105,7 @@ static const struct sysfs_ops esre_attr_ops = { }; /* Generic ESRT Entry ("ESRE") support. */ -static ssize_t esre_fw_class_show(struct esre_entry *entry, char *buf) +static ssize_t fw_class_show(struct esre_entry *entry, char *buf) { char *str = buf; @@ -116,18 +116,16 @@ static ssize_t esre_fw_class_show(struct esre_entry *entry, char *buf) return str - buf; } -static struct esre_attribute esre_fw_class = __ATTR(fw_class, 0400, - esre_fw_class_show, NULL); +static struct esre_attribute esre_fw_class = __ATTR_RO_MODE(fw_class, 0400); #define esre_attr_decl(name, size, fmt) \ -static ssize_t esre_##name##_show(struct esre_entry *entry, char *buf) \ +static ssize_t name##_show(struct esre_entry *entry, char *buf) \ { \ return sprintf(buf, fmt "\n", \ le##size##_to_cpu(entry->esre.esre1->name)); \ } \ \ -static struct esre_attribute esre_##name = __ATTR(name, 0400, \ - esre_##name##_show, NULL) +static struct esre_attribute esre_##name = __ATTR_RO_MODE(name, 0400) esre_attr_decl(fw_type, 32, "%u"); esre_attr_decl(fw_version, 32, "%u"); @@ -195,14 +193,13 @@ static int esre_create_sysfs_entry(void *esre, int entry_num) /* support for displaying ESRT fields at the top level */ #define esrt_attr_decl(name, size, fmt) \ -static ssize_t esrt_##name##_show(struct kobject *kobj, \ +static ssize_t name##_show(struct kobject *kobj, \ struct kobj_attribute *attr, char *buf)\ { \ return sprintf(buf, fmt "\n", le##size##_to_cpu(esrt->name)); \ } \ \ -static struct kobj_attribute esrt_##name = __ATTR(name, 0400, \ - esrt_##name##_show, NULL) +static struct kobj_attribute esrt_##name = __ATTR_RO_MODE(name, 0400) esrt_attr_decl(fw_resource_count, 32, "%u"); esrt_attr_decl(fw_resource_count_max, 32, "%u"); diff --git a/drivers/firmware/efi/runtime-map.c b/drivers/firmware/efi/runtime-map.c index 5c55227a34c8..2400b3e1d840 100644 --- a/drivers/firmware/efi/runtime-map.c +++ b/drivers/firmware/efi/runtime-map.c @@ -67,11 +67,11 @@ static ssize_t map_attr_show(struct kobject *kobj, struct attribute *attr, return map_attr->show(entry, buf); } -static struct map_attribute map_type_attr = __ATTR_RO(type); -static struct map_attribute map_phys_addr_attr = __ATTR_RO(phys_addr); -static struct map_attribute map_virt_addr_attr = __ATTR_RO(virt_addr); -static struct map_attribute map_num_pages_attr = __ATTR_RO(num_pages); -static struct map_attribute map_attribute_attr = __ATTR_RO(attribute); +static struct map_attribute map_type_attr = __ATTR_RO_MODE(type, 0400); +static struct map_attribute map_phys_addr_attr = __ATTR_RO_MODE(phys_addr, 0400); +static struct map_attribute map_virt_addr_attr = __ATTR_RO_MODE(virt_addr, 0400); +static struct map_attribute map_num_pages_attr = __ATTR_RO_MODE(num_pages, 0400); +static struct map_attribute map_attribute_attr = __ATTR_RO_MODE(attribute, 0400); /* * These are default attributes that are added for every memmap entry. diff --git a/drivers/gpio/gpio-altera.c b/drivers/gpio/gpio-altera.c index 3e6661bab54a..ddf9cd3ad974 100644 --- a/drivers/gpio/gpio-altera.c +++ b/drivers/gpio/gpio-altera.c @@ -94,21 +94,18 @@ static int altera_gpio_irq_set_type(struct irq_data *d, altera_gc = to_altera(irq_data_get_irq_chip_data(d)); - if (type == IRQ_TYPE_NONE) + if (type == IRQ_TYPE_NONE) { + irq_set_handler_locked(d, handle_bad_irq); return 0; - if (type == IRQ_TYPE_LEVEL_HIGH && - altera_gc->interrupt_trigger == IRQ_TYPE_LEVEL_HIGH) - return 0; - if (type == IRQ_TYPE_EDGE_RISING && - altera_gc->interrupt_trigger == IRQ_TYPE_EDGE_RISING) - return 0; - if (type == IRQ_TYPE_EDGE_FALLING && - altera_gc->interrupt_trigger == IRQ_TYPE_EDGE_FALLING) - return 0; - if (type == IRQ_TYPE_EDGE_BOTH && - altera_gc->interrupt_trigger == IRQ_TYPE_EDGE_BOTH) + } + if (type == altera_gc->interrupt_trigger) { + if (type == IRQ_TYPE_LEVEL_HIGH) + irq_set_handler_locked(d, handle_level_irq); + else + irq_set_handler_locked(d, handle_simple_irq); return 0; - + } + irq_set_handler_locked(d, handle_bad_irq); return -EINVAL; } @@ -234,7 +231,6 @@ static void altera_gpio_irq_edge_handler(struct irq_desc *desc) chained_irq_exit(chip, desc); } - static void altera_gpio_irq_leveL_high_handler(struct irq_desc *desc) { struct altera_gpio_chip *altera_gc; @@ -314,7 +310,7 @@ static int altera_gpio_probe(struct platform_device *pdev) altera_gc->interrupt_trigger = reg; ret = gpiochip_irqchip_add(&altera_gc->mmchip.gc, &altera_irq_chip, 0, - handle_simple_irq, IRQ_TYPE_NONE); + handle_bad_irq, IRQ_TYPE_NONE); if (ret) { dev_info(&pdev->dev, "could not add irqchip\n"); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 16302f7d59f6..fc9f14747f70 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1760,8 +1760,11 @@ int amdgpu_resume_kms(struct drm_device *dev, bool resume, bool fbcon) } r = amdgpu_late_init(adev); - if (r) + if (r) { + if (fbcon) + console_unlock(); return r; + } /* pin cursors */ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { diff --git a/drivers/gpu/drm/armada/Makefile b/drivers/gpu/drm/armada/Makefile index 26412d2f8c98..ffd673615772 100644 --- a/drivers/gpu/drm/armada/Makefile +++ b/drivers/gpu/drm/armada/Makefile @@ -4,5 +4,3 @@ armada-y += armada_510.o armada-$(CONFIG_DEBUG_FS) += armada_debugfs.o obj-$(CONFIG_DRM_ARMADA) := armada.o - -CFLAGS_armada_trace.o := -I$(src) diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index 252eb301470c..c147043af1ca 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -245,6 +245,15 @@ struct exynos_drm_gem *exynos_drm_gem_create(struct drm_device *dev, if (IS_ERR(exynos_gem)) return exynos_gem; + if (!is_drm_iommu_supported(dev) && (flags & EXYNOS_BO_NONCONTIG)) { + /* + * when no IOMMU is available, all allocated buffers are + * contiguous anyway, so drop EXYNOS_BO_NONCONTIG flag + */ + flags &= ~EXYNOS_BO_NONCONTIG; + DRM_WARN("Non-contiguous allocation is not supported without IOMMU, falling back to contiguous buffer\n"); + } + /* set memory type and cache attribute from user side. */ exynos_gem->flags = flags; diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 513a16cc6e18..2729ab3557bb 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -165,11 +165,11 @@ config HID_CHERRY Support for Cherry Cymotion keyboard. config HID_CHICONY - tristate "Chicony Tactical pad" + tristate "Chicony devices" depends on HID default !EXPERT ---help--- - Support for Chicony Tactical pad. + Support for Chicony Tactical pad and special keys on Chicony keyboards. config HID_CORSAIR tristate "Corsair devices" diff --git a/drivers/hid/hid-chicony.c b/drivers/hid/hid-chicony.c index bc3cec199fee..f04ed9aabc3f 100644 --- a/drivers/hid/hid-chicony.c +++ b/drivers/hid/hid-chicony.c @@ -86,6 +86,7 @@ static const struct hid_device_id ch_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) }, + { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_JESS_ZEN_AIO_KBD) }, { } }; MODULE_DEVICE_TABLE(hid, ch_devices); diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 13dc2731195b..932956c99e20 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1869,6 +1869,7 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) }, { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) }, { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_TABLET) }, + { HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_JESS_ZEN_AIO_KBD) }, { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) }, { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) }, diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 37cbc2ecfc5f..6937086060a6 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -523,6 +523,7 @@ #define USB_VENDOR_ID_JESS 0x0c45 #define USB_DEVICE_ID_JESS_YUREX 0x1010 +#define USB_DEVICE_ID_JESS_ZEN_AIO_KBD 0x5112 #define USB_VENDOR_ID_JESS2 0x0f30 #define USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD 0x0111 diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index d8803c3bbfdc..16833365475f 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -218,8 +218,12 @@ static irqreturn_t riic_tend_isr(int irq, void *data) } if (riic->is_last || riic->err) { - riic_clear_set_bit(riic, 0, ICIER_SPIE, RIIC_ICIER); + riic_clear_set_bit(riic, ICIER_TEIE, ICIER_SPIE, RIIC_ICIER); writeb(ICCR2_SP, riic->base + RIIC_ICCR2); + } else { + /* Transfer is complete, but do not send STOP */ + riic_clear_set_bit(riic, ICIER_TEIE, 0, RIIC_ICIER); + complete(&riic->msg_done); } return IRQ_HANDLED; diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index 1c8b7c22c822..348828271cb0 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c @@ -1564,7 +1564,7 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp, context->mtu_msgmax = (IB_MTU_4096 << 5) | ilog2(dev->dev->caps.max_gso_sz); else - context->mtu_msgmax = (IB_MTU_4096 << 5) | 12; + context->mtu_msgmax = (IB_MTU_4096 << 5) | 13; } else if (attr_mask & IB_QP_PATH_MTU) { if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) { pr_err("path MTU (%u) is invalid\n", diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 2a1fdcaa3044..dbd5adc62c3f 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -1123,6 +1123,8 @@ static int create_umr_res(struct mlx5_ib_dev *dev) qp->real_qp = qp; qp->uobject = NULL; qp->qp_type = MLX5_IB_QPT_REG_UMR; + qp->send_cq = init_attr->send_cq; + qp->recv_cq = init_attr->recv_cq; attr->qp_state = IB_QPS_INIT; attr->port_num = 1; diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index f9711aceef54..4efec2db4ee2 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2201,10 +2201,12 @@ static int __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn, uint64_t tmp; if (!sg_res) { + unsigned int pgoff = sg->offset & ~PAGE_MASK; + sg_res = aligned_nrpages(sg->offset, sg->length); - sg->dma_address = ((dma_addr_t)iov_pfn << VTD_PAGE_SHIFT) + sg->offset; + sg->dma_address = ((dma_addr_t)iov_pfn << VTD_PAGE_SHIFT) + pgoff; sg->dma_length = sg->length; - pteval = page_to_phys(sg_page(sg)) | prot; + pteval = (sg_phys(sg) - pgoff) | prot; phys_pfn = pteval >> VTD_PAGE_SHIFT; } @@ -3757,7 +3759,7 @@ static int intel_nontranslate_map_sg(struct device *hddev, for_each_sg(sglist, sg, nelems, i) { BUG_ON(!sg_page(sg)); - sg->dma_address = page_to_phys(sg_page(sg)) + sg->offset; + sg->dma_address = sg_phys(sg); sg->dma_length = sg->length; } return nelems; diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c index 63faee04a008..636187a4c1a3 100644 --- a/drivers/irqchip/irq-crossbar.c +++ b/drivers/irqchip/irq-crossbar.c @@ -199,7 +199,7 @@ static const struct irq_domain_ops crossbar_domain_ops = { static int __init crossbar_of_init(struct device_node *node) { int i, size, reserved = 0; - u32 max = 0, entry; + u32 max = 0, entry, reg_size; const __be32 *irqsr; int ret = -ENOMEM; @@ -276,9 +276,9 @@ static int __init crossbar_of_init(struct device_node *node) if (!cb->register_offsets) goto err_irq_map; - of_property_read_u32(node, "ti,reg-size", &size); + of_property_read_u32(node, "ti,reg-size", ®_size); - switch (size) { + switch (reg_size) { case 1: cb->write = crossbar_writeb; break; @@ -304,7 +304,7 @@ static int __init crossbar_of_init(struct device_node *node) continue; cb->register_offsets[i] = reserved; - reserved += size; + reserved += reg_size; } of_property_read_u32(node, "ti,irqs-safe-map", &cb->safe_map); diff --git a/drivers/media/usb/dvb-usb/dibusb-common.c b/drivers/media/usb/dvb-usb/dibusb-common.c index ef3a8f75f82e..7b15aea2723d 100644 --- a/drivers/media/usb/dvb-usb/dibusb-common.c +++ b/drivers/media/usb/dvb-usb/dibusb-common.c @@ -179,8 +179,20 @@ EXPORT_SYMBOL(dibusb_i2c_algo); int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val) { - u8 wbuf[1] = { offs }; - return dibusb_i2c_msg(d, 0x50, wbuf, 1, val, 1); + u8 *buf; + int rc; + + buf = kmalloc(2, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + buf[0] = offs; + + rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1); + *val = buf[1]; + kfree(buf); + + return rc; } EXPORT_SYMBOL(dibusb_read_eeprom_byte); diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c index 55cba89dbdb8..49691a8c74ee 100644 --- a/drivers/memory/omap-gpmc.c +++ b/drivers/memory/omap-gpmc.c @@ -1890,9 +1890,7 @@ static int gpmc_probe_onenand_child(struct platform_device *pdev, if (!of_property_read_u32(child, "dma-channel", &val)) gpmc_onenand_data->dma_channel = val; - gpmc_onenand_init(gpmc_onenand_data); - - return 0; + return gpmc_onenand_init(gpmc_onenand_data); } #else static int gpmc_probe_onenand_child(struct platform_device *pdev, diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c index 6749b1829469..4d01d7bc24ef 100644 --- a/drivers/net/can/ti_hecc.c +++ b/drivers/net/can/ti_hecc.c @@ -652,6 +652,9 @@ static int ti_hecc_rx_poll(struct napi_struct *napi, int quota) mbx_mask = hecc_read(priv, HECC_CANMIM); mbx_mask |= HECC_TX_MBOX_MASK; hecc_write(priv, HECC_CANMIM, mbx_mask); + } else { + /* repoll is done only if whole budget is used */ + num_pkts = quota; } return num_pkts; diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c index eb7192fab593..357c9e89fdf9 100644 --- a/drivers/net/can/usb/ems_usb.c +++ b/drivers/net/can/usb/ems_usb.c @@ -290,6 +290,8 @@ static void ems_usb_read_interrupt_callback(struct urb *urb) case -ECONNRESET: /* unlink */ case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return; diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c index 4c6707ecc619..afa5b4a7a4a2 100644 --- a/drivers/net/can/usb/esd_usb2.c +++ b/drivers/net/can/usb/esd_usb2.c @@ -393,6 +393,8 @@ static void esd_usb2_read_bulk_callback(struct urb *urb) break; case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return; diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c index c2e2821a3346..db1855b0e08f 100644 --- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -603,8 +603,8 @@ static int kvaser_usb_wait_msg(const struct kvaser_usb *dev, u8 id, } if (pos + tmp->len > actual_len) { - dev_err(dev->udev->dev.parent, - "Format error\n"); + dev_err_ratelimited(dev->udev->dev.parent, + "Format error\n"); break; } @@ -809,6 +809,7 @@ static int kvaser_usb_simple_msg_async(struct kvaser_usb_net_priv *priv, if (err) { netdev_err(netdev, "Error transmitting URB\n"); usb_unanchor_urb(urb); + kfree(buf); usb_free_urb(urb); return err; } @@ -1321,6 +1322,8 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb) case 0: break; case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return; default: @@ -1329,7 +1332,7 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb) goto resubmit_urb; } - while (pos <= urb->actual_length - MSG_HEADER_LEN) { + while (pos <= (int)(urb->actual_length - MSG_HEADER_LEN)) { msg = urb->transfer_buffer + pos; /* The Kvaser firmware can only read and write messages that @@ -1348,7 +1351,8 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb) } if (pos + msg->len > urb->actual_length) { - dev_err(dev->udev->dev.parent, "Format error\n"); + dev_err_ratelimited(dev->udev->dev.parent, + "Format error\n"); break; } @@ -1767,6 +1771,7 @@ static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb, spin_unlock_irqrestore(&priv->tx_contexts_lock, flags); usb_unanchor_urb(urb); + kfree(buf); stats->tx_dropped++; diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c index 449b2a47f9a8..522286cc0f9c 100644 --- a/drivers/net/can/usb/usb_8dev.c +++ b/drivers/net/can/usb/usb_8dev.c @@ -524,6 +524,8 @@ static void usb_8dev_read_bulk_callback(struct urb *urb) break; case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return; diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index 1c8123816745..abb3ff6498dc 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -13646,7 +13646,7 @@ static int bnx2x_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb) if (!netif_running(bp->dev)) { DP(BNX2X_MSG_PTP, "PTP adjfreq called while the interface is down\n"); - return -EFAULT; + return -ENETDOWN; } if (ppb < 0) { @@ -13705,6 +13705,12 @@ static int bnx2x_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) { struct bnx2x *bp = container_of(ptp, struct bnx2x, ptp_clock_info); + if (!netif_running(bp->dev)) { + DP(BNX2X_MSG_PTP, + "PTP adjtime called while the interface is down\n"); + return -ENETDOWN; + } + DP(BNX2X_MSG_PTP, "PTP adjtime called, delta = %llx\n", delta); timecounter_adjtime(&bp->timecounter, delta); @@ -13717,6 +13723,12 @@ static int bnx2x_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) struct bnx2x *bp = container_of(ptp, struct bnx2x, ptp_clock_info); u64 ns; + if (!netif_running(bp->dev)) { + DP(BNX2X_MSG_PTP, + "PTP gettime called while the interface is down\n"); + return -ENETDOWN; + } + ns = timecounter_read(&bp->timecounter); DP(BNX2X_MSG_PTP, "PTP gettime called, ns = %llu\n", ns); @@ -13732,6 +13744,12 @@ static int bnx2x_ptp_settime(struct ptp_clock_info *ptp, struct bnx2x *bp = container_of(ptp, struct bnx2x, ptp_clock_info); u64 ns; + if (!netif_running(bp->dev)) { + DP(BNX2X_MSG_PTP, + "PTP settime called while the interface is down\n"); + return -ENETDOWN; + } + ns = timespec64_to_ns(ts); DP(BNX2X_MSG_PTP, "PTP settime called, ns = %llu\n", ns); diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c index 9d027348cd09..5780830f78ad 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c @@ -434,7 +434,9 @@ static int bnx2x_vf_mac_vlan_config(struct bnx2x *bp, /* Add/Remove the filter */ rc = bnx2x_config_vlan_mac(bp, &ramrod); - if (rc && rc != -EEXIST) { + if (rc == -EEXIST) + return 0; + if (rc) { BNX2X_ERR("Failed to %s %s\n", filter->add ? "add" : "delete", (filter->type == BNX2X_VF_FILTER_VLAN_MAC) ? @@ -444,6 +446,8 @@ static int bnx2x_vf_mac_vlan_config(struct bnx2x *bp, return rc; } + filter->applied = true; + return 0; } @@ -471,6 +475,8 @@ int bnx2x_vf_mac_vlan_config_list(struct bnx2x *bp, struct bnx2x_virtf *vf, BNX2X_ERR("Managed only %d/%d filters - rolling back\n", i, filters->count + 1); while (--i >= 0) { + if (!filters->filters[i].applied) + continue; filters->filters[i].add = !filters->filters[i].add; bnx2x_vf_mac_vlan_config(bp, vf, qid, &filters->filters[i], diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h index 670a581ffabc..6f6f13dc2be3 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h @@ -114,6 +114,7 @@ struct bnx2x_vf_mac_vlan_filter { (BNX2X_VF_FILTER_MAC | BNX2X_VF_FILTER_VLAN) /*shortcut*/ bool add; + bool applied; u8 *mac; u16 vid; }; diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c index 1374e5394a79..a12a4236b143 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c @@ -868,7 +868,7 @@ int bnx2x_vfpf_set_mcast(struct net_device *dev) struct bnx2x *bp = netdev_priv(dev); struct vfpf_set_q_filters_tlv *req = &bp->vf2pf_mbox->req.set_q_filters; struct pfvf_general_resp_tlv *resp = &bp->vf2pf_mbox->resp.general_resp; - int rc, i = 0; + int rc = 0, i = 0; struct netdev_hw_addr *ha; if (bp->state != BNX2X_STATE_OPEN) { @@ -883,6 +883,15 @@ int bnx2x_vfpf_set_mcast(struct net_device *dev) /* Get Rx mode requested */ DP(NETIF_MSG_IFUP, "dev->flags = %x\n", dev->flags); + /* We support PFVF_MAX_MULTICAST_PER_VF mcast addresses tops */ + if (netdev_mc_count(dev) > PFVF_MAX_MULTICAST_PER_VF) { + DP(NETIF_MSG_IFUP, + "VF supports not more than %d multicast MAC addresses\n", + PFVF_MAX_MULTICAST_PER_VF); + rc = -EINVAL; + goto out; + } + netdev_for_each_mc_addr(ha, dev) { DP(NETIF_MSG_IFUP, "Adding mcast MAC: %pM\n", bnx2x_mc_addr(ha)); @@ -890,16 +899,6 @@ int bnx2x_vfpf_set_mcast(struct net_device *dev) i++; } - /* We support four PFVF_MAX_MULTICAST_PER_VF mcast - * addresses tops - */ - if (i >= PFVF_MAX_MULTICAST_PER_VF) { - DP(NETIF_MSG_IFUP, - "VF supports not more than %d multicast MAC addresses\n", - PFVF_MAX_MULTICAST_PER_VF); - return -EINVAL; - } - req->n_multicast = i; req->flags |= VFPF_SET_Q_FILTERS_MULTICAST_CHANGED; req->vf_qid = 0; @@ -924,7 +923,7 @@ int bnx2x_vfpf_set_mcast(struct net_device *dev) out: bnx2x_vfpf_finalize(bp, &req->first_tlv); - return 0; + return rc; } /* request pf to add a vlan for the vf */ diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c index 8c48bb2a94ea..af827faec7fe 100644 --- a/drivers/net/ipvlan/ipvlan_core.c +++ b/drivers/net/ipvlan/ipvlan_core.c @@ -388,7 +388,7 @@ static int ipvlan_process_v6_outbound(struct sk_buff *skb) struct dst_entry *dst; int err, ret = NET_XMIT_DROP; struct flowi6 fl6 = { - .flowi6_iif = dev->ifindex, + .flowi6_oif = dev->ifindex, .daddr = ip6h->daddr, .saddr = ip6h->saddr, .flowi6_flags = FLOWI_FLAG_ANYSRC, diff --git a/drivers/net/phy/spi_ks8995.c b/drivers/net/phy/spi_ks8995.c index c72c42206850..21d22f86134e 100644 --- a/drivers/net/phy/spi_ks8995.c +++ b/drivers/net/phy/spi_ks8995.c @@ -310,6 +310,7 @@ static int ks8995_probe(struct spi_device *spi) if (err) return err; + sysfs_attr_init(&ks->regs_attr.attr); err = sysfs_create_bin_file(&spi->dev.kobj, &ks->regs_attr); if (err) { dev_err(&spi->dev, "unable to create sysfs file, err=%d\n", diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index 2a996a68fc2b..f877fbc7d7af 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -2885,6 +2885,7 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info) { struct hwsim_new_radio_params param = { 0 }; const char *hwname = NULL; + int ret; param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG]; param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE]; @@ -2924,7 +2925,9 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info) param.regd = hwsim_world_regdom_custom[idx]; } - return mac80211_hwsim_new_radio(info, ¶m); + ret = mac80211_hwsim_new_radio(info, ¶m); + kfree(hwname); + return ret; } static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info) diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index d278362448ca..fc8f9b446556 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -7887,11 +7887,17 @@ lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; spin_unlock_irq(shost->host_lock); - if (vport->port_type == LPFC_PHYSICAL_PORT - && !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) - lpfc_issue_init_vfi(vport); - else + if (mb->mbxStatus == MBX_NOT_FINISHED) + break; + if ((vport->port_type == LPFC_PHYSICAL_PORT) && + !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG)) { + if (phba->sli_rev == LPFC_SLI_REV4) + lpfc_issue_init_vfi(vport); + else + lpfc_initial_flogi(vport); + } else { lpfc_initial_fdisc(vport); + } break; } } else { diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 6df2841cb7f9..5e4e1ba96f10 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -379,8 +379,6 @@ MODULE_PARM_DESC(vcpus_per_sub_channel, "Ratio of VCPUs to subchannels"); */ static int storvsc_timeout = 180; -static int msft_blist_flags = BLIST_TRY_VPD_PAGES; - static void storvsc_on_channel_callback(void *context); @@ -1241,6 +1239,22 @@ static int storvsc_do_io(struct hv_device *device, return ret; } +static int storvsc_device_alloc(struct scsi_device *sdevice) +{ + /* + * Set blist flag to permit the reading of the VPD pages even when + * the target may claim SPC-2 compliance. MSFT targets currently + * claim SPC-2 compliance while they implement post SPC-2 features. + * With this flag we can correctly handle WRITE_SAME_16 issues. + * + * Hypervisor reports SCSI_UNKNOWN type for DVD ROM device but + * still supports REPORT LUN. + */ + sdevice->sdev_bflags = BLIST_REPORTLUN2 | BLIST_TRY_VPD_PAGES; + + return 0; +} + static int storvsc_device_configure(struct scsi_device *sdevice) { @@ -1256,14 +1270,6 @@ static int storvsc_device_configure(struct scsi_device *sdevice) sdevice->no_write_same = 1; /* - * Add blist flags to permit the reading of the VPD pages even when - * the target may claim SPC-2 compliance. MSFT targets currently - * claim SPC-2 compliance while they implement post SPC-2 features. - * With this patch we can correctly handle WRITE_SAME_16 issues. - */ - sdevice->sdev_bflags |= msft_blist_flags; - - /* * If the host is WIN8 or WIN8 R2, claim conformance to SPC-3 * if the device is a MSFT virtual device. If the host is * WIN10 or newer, allow write_same. @@ -1529,6 +1535,7 @@ static struct scsi_host_template scsi_driver = { .eh_host_reset_handler = storvsc_host_reset_handler, .proc_name = "storvsc_host", .eh_timed_out = storvsc_eh_timed_out, + .slave_alloc = storvsc_device_alloc, .slave_configure = storvsc_device_configure, .cmd_per_lun = 255, .this_id = -1, diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index fec1ef2b1748..1f4a1f02a2cd 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -315,7 +315,6 @@ config SPI_FSL_SPI config SPI_FSL_DSPI tristate "Freescale DSPI controller" select REGMAP_MMIO - depends on HAS_DMA depends on SOC_VF610 || SOC_LS1021A || ARCH_LAYERSCAPE || COMPILE_TEST help This enables support for the Freescale DSPI controller in master diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index d9fb5d411d1d..1a2af68ca93d 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -313,6 +313,7 @@ static ssize_t gadget_dev_desc_UDC_store(struct config_item *item, ret = unregister_gadget(gi); if (ret) goto err; + kfree(name); } else { if (gi->udc_name) { ret = -EBUSY; diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index a1e43d6f7ebb..7d7197e2cfc4 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -924,7 +924,7 @@ retry: } if (io_data->aio) { - req = usb_ep_alloc_request(ep->ep, GFP_KERNEL); + req = usb_ep_alloc_request(ep->ep, GFP_ATOMIC); if (unlikely(!req)) goto error_lock; diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index b6df47aa25af..81f3c9cb333c 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -1837,8 +1837,10 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) spin_lock_irq (&dev->lock); value = -EINVAL; - if (dev->buf) + if (dev->buf) { + kfree(kbuf); goto fail; + } dev->buf = kbuf; /* full or low speed config */ diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 7062bb0975a5..462e183609b6 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -323,6 +323,8 @@ int register_virtio_device(struct virtio_device *dev) /* device_register() causes the bus infrastructure to look for a * matching driver. */ err = device_register(&dev->dev); + if (err) + ida_simple_remove(&virtio_index_ida, dev->index); out: if (err) add_status(dev, VIRTIO_CONFIG_S_FAILED); diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c index 4b0eff6da674..83a8a33a0d73 100644 --- a/fs/afs/cmservice.c +++ b/fs/afs/cmservice.c @@ -115,6 +115,9 @@ bool afs_cm_incoming_call(struct afs_call *call) case CBProbe: call->type = &afs_SRXCBProbe; return true; + case CBProbeUuid: + call->type = &afs_SRXCBProbeUuid; + return true; case CBTellMeAboutYourself: call->type = &afs_SRXCBTellMeAboutYourself; return true; diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 44e09483d2cd..c690a1c0c4e5 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -2051,7 +2051,7 @@ out: if (new_inode != NULL) nfs_drop_nlink(new_inode); d_move(old_dentry, new_dentry); - nfs_set_verifier(new_dentry, + nfs_set_verifier(old_dentry, nfs_save_change_attribute(new_dir)); } else if (error == -ENOENT) nfs_dentry_handle_enoent(old_dentry); diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h index b58fd667f87b..598f8c7d719f 100644 --- a/include/asm-generic/sections.h +++ b/include/asm-generic/sections.h @@ -24,6 +24,8 @@ * __kprobes_text_start, __kprobes_text_end * __entry_text_start, __entry_text_end * __ctors_start, __ctors_end + * __irqentry_text_start, __irqentry_text_end + * __softirqentry_text_start, __softirqentry_text_end */ extern char _text[], _stext[], _etext[]; extern char _data[], _sdata[], _edata[]; @@ -35,6 +37,8 @@ extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[]; extern char __kprobes_text_start[], __kprobes_text_end[]; extern char __entry_text_start[], __entry_text_end[]; extern char __start_rodata[], __end_rodata[]; +extern char __irqentry_text_start[], __irqentry_text_end[]; +extern char __softirqentry_text_start[], __softirqentry_text_end[]; /* Start and end of .ctors section - used for constructor calls. */ extern char __ctors_start[], __ctors_end[]; diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 36c7bacaf7f1..02ca5c20d245 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -464,15 +464,17 @@ *(.entry.text) \ VMLINUX_SYMBOL(__entry_text_end) = .; -#ifdef CONFIG_FUNCTION_GRAPH_TRACER #define IRQENTRY_TEXT \ ALIGN_FUNCTION(); \ VMLINUX_SYMBOL(__irqentry_text_start) = .; \ *(.irqentry.text) \ VMLINUX_SYMBOL(__irqentry_text_end) = .; -#else -#define IRQENTRY_TEXT -#endif + +#define SOFTIRQENTRY_TEXT \ + ALIGN_FUNCTION(); \ + VMLINUX_SYMBOL(__softirqentry_text_start) = .; \ + *(.softirqentry.text) \ + VMLINUX_SYMBOL(__softirqentry_text_end) = .; /* Section used for early init (in .S files) */ #define HEAD_TEXT *(.head.text) diff --git a/include/drm/drmP.h b/include/drm/drmP.h index a31976c860f6..a5d506b93daf 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -158,6 +158,26 @@ void drm_err(const char *format, ...); /** \name Macros to make printk easier */ /*@{*/ +#define _DRM_PRINTK(once, level, fmt, ...) \ + do { \ + printk##once(KERN_##level "[" DRM_NAME "] " fmt, \ + ##__VA_ARGS__); \ + } while (0) + +#define DRM_INFO(fmt, ...) \ + _DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__) +#define DRM_NOTE(fmt, ...) \ + _DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__) +#define DRM_WARN(fmt, ...) \ + _DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__) + +#define DRM_INFO_ONCE(fmt, ...) \ + _DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__) +#define DRM_NOTE_ONCE(fmt, ...) \ + _DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__) +#define DRM_WARN_ONCE(fmt, ...) \ + _DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__) + /** * Error output. * @@ -183,12 +203,6 @@ void drm_err(const char *format, ...); drm_err(fmt, ##__VA_ARGS__); \ }) -#define DRM_INFO(fmt, ...) \ - printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) - -#define DRM_INFO_ONCE(fmt, ...) \ - printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__) - /** * Debug output. * diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index ed94cea9eaff..312a4ef093e3 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -781,16 +781,6 @@ ftrace_push_return_trace(unsigned long ret, unsigned long func, int *depth, */ #define __notrace_funcgraph notrace -/* - * We want to which function is an entrypoint of a hardirq. - * That will help us to put a signal on output. - */ -#define __irq_entry __attribute__((__section__(".irqentry.text"))) - -/* Limits of hardirq entrypoints */ -extern char __irqentry_text_start[]; -extern char __irqentry_text_end[]; - #define FTRACE_NOTRACE_DEPTH 65536 #define FTRACE_RETFUNC_DEPTH 50 #define FTRACE_RETSTACK_ALLOC_SIZE 32 @@ -827,7 +817,6 @@ static inline void unpause_graph_tracing(void) #else /* !CONFIG_FUNCTION_GRAPH_TRACER */ #define __notrace_funcgraph -#define __irq_entry #define INIT_FTRACE_GRAPH static inline void ftrace_graph_init_task(struct task_struct *t) { } diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h index 7ff168d06967..46156ff5b01d 100644 --- a/include/linux/genalloc.h +++ b/include/linux/genalloc.h @@ -31,6 +31,7 @@ #define __GENALLOC_H__ #include <linux/spinlock_types.h> +#include <linux/atomic.h> struct device; struct device_node; @@ -68,7 +69,7 @@ struct gen_pool { */ struct gen_pool_chunk { struct list_head next_chunk; /* next chunk in pool */ - atomic_t avail; + atomic_long_t avail; phys_addr_t phys_addr; /* physical starting address of memory chunk */ unsigned long start_addr; /* start address of memory chunk */ unsigned long end_addr; /* end address of memory chunk (inclusive) */ diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index b3b1af8a8f8c..aa4933365485 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -18,6 +18,7 @@ #include <linux/atomic.h> #include <asm/ptrace.h> #include <asm/irq.h> +#include <asm/sections.h> /* * These correspond to the IORESOURCE_IRQ_* defines in @@ -679,4 +680,11 @@ extern int early_irq_init(void); extern int arch_probe_nr_irqs(void); extern int arch_early_irq_init(void); +/* + * We want to know which function is an entrypoint of a hardirq or a softirq. + */ +#define __irq_entry __attribute__((__section__(".irqentry.text"))) +#define __softirq_entry \ + __attribute__((__section__(".softirqentry.text"))) + #endif diff --git a/include/linux/kasan-checks.h b/include/linux/kasan-checks.h new file mode 100644 index 000000000000..b7f8aced7870 --- /dev/null +++ b/include/linux/kasan-checks.h @@ -0,0 +1,12 @@ +#ifndef _LINUX_KASAN_CHECKS_H +#define _LINUX_KASAN_CHECKS_H + +#ifdef CONFIG_KASAN +void kasan_check_read(const void *p, unsigned int size); +void kasan_check_write(const void *p, unsigned int size); +#else +static inline void kasan_check_read(const void *p, unsigned int size) { } +static inline void kasan_check_write(const void *p, unsigned int size) { } +#endif + +#endif diff --git a/include/linux/kasan.h b/include/linux/kasan.h index 0fdc798e3ff7..b37afd197eed 100644 --- a/include/linux/kasan.h +++ b/include/linux/kasan.h @@ -30,45 +30,60 @@ static inline void *kasan_mem_to_shadow(const void *addr) } /* Enable reporting bugs after kasan_disable_current() */ -static inline void kasan_enable_current(void) -{ - current->kasan_depth++; -} +extern void kasan_enable_current(void); /* Disable reporting bugs for current task */ -static inline void kasan_disable_current(void) -{ - current->kasan_depth--; -} +extern void kasan_disable_current(void); void kasan_unpoison_shadow(const void *address, size_t size); void kasan_unpoison_task_stack(struct task_struct *task); +void kasan_unpoison_stack_above_sp_to(const void *watermark); void kasan_alloc_pages(struct page *page, unsigned int order); void kasan_free_pages(struct page *page, unsigned int order); +void kasan_cache_create(struct kmem_cache *cache, size_t *size, + unsigned long *flags); +void kasan_cache_shrink(struct kmem_cache *cache); +void kasan_cache_shutdown(struct kmem_cache *cache); + void kasan_poison_slab(struct page *page); void kasan_unpoison_object_data(struct kmem_cache *cache, void *object); void kasan_poison_object_data(struct kmem_cache *cache, void *object); +void kasan_init_slab_obj(struct kmem_cache *cache, const void *object); -void kasan_kmalloc_large(const void *ptr, size_t size); +void kasan_kmalloc_large(const void *ptr, size_t size, gfp_t flags); void kasan_kfree_large(const void *ptr); -void kasan_kfree(void *ptr); -void kasan_kmalloc(struct kmem_cache *s, const void *object, size_t size); -void kasan_krealloc(const void *object, size_t new_size); +void kasan_poison_kfree(void *ptr); +void kasan_kmalloc(struct kmem_cache *s, const void *object, size_t size, + gfp_t flags); +void kasan_krealloc(const void *object, size_t new_size, gfp_t flags); + +void kasan_slab_alloc(struct kmem_cache *s, void *object, gfp_t flags); +bool kasan_slab_free(struct kmem_cache *s, void *object); -void kasan_slab_alloc(struct kmem_cache *s, void *object); -void kasan_slab_free(struct kmem_cache *s, void *object); +struct kasan_cache { + int alloc_meta_offset; + int free_meta_offset; +}; int kasan_module_alloc(void *addr, size_t size); void kasan_free_shadow(const struct vm_struct *vm); +size_t ksize(const void *); +static inline void kasan_unpoison_slab(const void *ptr) { ksize(ptr); } +size_t kasan_metadata_size(struct kmem_cache *cache); + +bool kasan_save_enable_multi_shot(void); +void kasan_restore_multi_shot(bool enabled); + #else /* CONFIG_KASAN */ static inline void kasan_unpoison_shadow(const void *address, size_t size) {} static inline void kasan_unpoison_task_stack(struct task_struct *task) {} +static inline void kasan_unpoison_stack_above_sp_to(const void *watermark) {} static inline void kasan_enable_current(void) {} static inline void kasan_disable_current(void) {} @@ -76,25 +91,41 @@ static inline void kasan_disable_current(void) {} static inline void kasan_alloc_pages(struct page *page, unsigned int order) {} static inline void kasan_free_pages(struct page *page, unsigned int order) {} +static inline void kasan_cache_create(struct kmem_cache *cache, + size_t *size, + unsigned long *flags) {} +static inline void kasan_cache_shrink(struct kmem_cache *cache) {} +static inline void kasan_cache_shutdown(struct kmem_cache *cache) {} + static inline void kasan_poison_slab(struct page *page) {} static inline void kasan_unpoison_object_data(struct kmem_cache *cache, void *object) {} static inline void kasan_poison_object_data(struct kmem_cache *cache, void *object) {} +static inline void kasan_init_slab_obj(struct kmem_cache *cache, + const void *object) {} -static inline void kasan_kmalloc_large(void *ptr, size_t size) {} +static inline void kasan_kmalloc_large(void *ptr, size_t size, gfp_t flags) {} static inline void kasan_kfree_large(const void *ptr) {} -static inline void kasan_kfree(void *ptr) {} +static inline void kasan_poison_kfree(void *ptr) {} static inline void kasan_kmalloc(struct kmem_cache *s, const void *object, - size_t size) {} -static inline void kasan_krealloc(const void *object, size_t new_size) {} + size_t size, gfp_t flags) {} +static inline void kasan_krealloc(const void *object, size_t new_size, + gfp_t flags) {} -static inline void kasan_slab_alloc(struct kmem_cache *s, void *object) {} -static inline void kasan_slab_free(struct kmem_cache *s, void *object) {} +static inline void kasan_slab_alloc(struct kmem_cache *s, void *object, + gfp_t flags) {} +static inline bool kasan_slab_free(struct kmem_cache *s, void *object) +{ + return false; +} static inline int kasan_module_alloc(void *addr, size_t size) { return 0; } static inline void kasan_free_shadow(const struct vm_struct *vm) {} +static inline void kasan_unpoison_slab(const void *ptr) { } +static inline size_t kasan_metadata_size(struct kmem_cache *cache) { return 0; } + #endif /* CONFIG_KASAN */ #endif /* LINUX_KASAN_H */ diff --git a/include/linux/mm.h b/include/linux/mm.h index b4a5021fbbfa..9d83f5212ea6 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2176,14 +2176,18 @@ kernel_map_pages(struct page *page, int numpages, int enable) } #ifdef CONFIG_HIBERNATION extern bool kernel_page_present(struct page *page); -#endif /* CONFIG_HIBERNATION */ -#else +#endif /* CONFIG_HIBERNATION */ +#else /* CONFIG_DEBUG_PAGEALLOC */ static inline void kernel_map_pages(struct page *page, int numpages, int enable) {} #ifdef CONFIG_HIBERNATION static inline bool kernel_page_present(struct page *page) { return true; } -#endif /* CONFIG_HIBERNATION */ -#endif +#endif /* CONFIG_HIBERNATION */ +static inline bool debug_pagealloc_enabled(void) +{ + return false; +} +#endif /* CONFIG_DEBUG_PAGEALLOC */ #ifdef __HAVE_ARCH_GATE_AREA extern struct vm_area_struct *get_gate_vma(struct mm_struct *mm); diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h index a1a210d59961..38c5eb21883e 100644 --- a/include/linux/mmu_notifier.h +++ b/include/linux/mmu_notifier.h @@ -381,18 +381,6 @@ static inline void mmu_notifier_mm_destroy(struct mm_struct *mm) ___pmd; \ }) -#define pmdp_huge_get_and_clear_notify(__mm, __haddr, __pmd) \ -({ \ - unsigned long ___haddr = __haddr & HPAGE_PMD_MASK; \ - pmd_t ___pmd; \ - \ - ___pmd = pmdp_huge_get_and_clear(__mm, __haddr, __pmd); \ - mmu_notifier_invalidate_range(__mm, ___haddr, \ - ___haddr + HPAGE_PMD_SIZE); \ - \ - ___pmd; \ -}) - /* * set_pte_at_notify() sets the pte _after_ running the notifier. * This is safe to start by updating the secondary MMUs, because the primary MMU @@ -475,7 +463,6 @@ static inline void mmu_notifier_mm_destroy(struct mm_struct *mm) #define pmdp_clear_young_notify pmdp_test_and_clear_young #define ptep_clear_flush_notify ptep_clear_flush #define pmdp_huge_clear_flush_notify pmdp_huge_clear_flush -#define pmdp_huge_get_and_clear_notify pmdp_huge_get_and_clear #define set_pte_at_notify set_pte_at #endif /* CONFIG_MMU_NOTIFIER */ diff --git a/include/linux/omap-gpmc.h b/include/linux/omap-gpmc.h index 7dee00143afd..c201e31e9d7e 100644 --- a/include/linux/omap-gpmc.h +++ b/include/linux/omap-gpmc.h @@ -191,10 +191,11 @@ static inline int gpmc_nand_init(struct omap_nand_platform_data *d, #endif #if IS_ENABLED(CONFIG_MTD_ONENAND_OMAP2) -extern void gpmc_onenand_init(struct omap_onenand_platform_data *d); +extern int gpmc_onenand_init(struct omap_onenand_platform_data *d); #else #define board_onenand_data NULL -static inline void gpmc_onenand_init(struct omap_onenand_platform_data *d) +static inline int gpmc_onenand_init(struct omap_onenand_platform_data *d) { + return 0; } #endif diff --git a/include/linux/slab.h b/include/linux/slab.h index b4e739f04ee6..16dc1e4a91f3 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -87,6 +87,12 @@ # define SLAB_FAILSLAB 0x00000000UL #endif +#ifdef CONFIG_KASAN +#define SLAB_KASAN 0x08000000UL +#else +#define SLAB_KASAN 0x00000000UL +#endif + /* The following flags affect the page allocator grouping pages by mobility */ #define SLAB_RECLAIM_ACCOUNT 0x00020000UL /* Objects are reclaimable */ #define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT /* Objects are short-lived */ @@ -368,7 +374,7 @@ static __always_inline void *kmem_cache_alloc_trace(struct kmem_cache *s, { void *ret = kmem_cache_alloc(s, flags); - kasan_kmalloc(s, ret, size); + kasan_kmalloc(s, ret, size, flags); return ret; } @@ -379,7 +385,7 @@ kmem_cache_alloc_node_trace(struct kmem_cache *s, { void *ret = kmem_cache_alloc_node(s, gfpflags, node); - kasan_kmalloc(s, ret, size); + kasan_kmalloc(s, ret, size, gfpflags); return ret; } #endif /* CONFIG_TRACING */ diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h index 33d049066c3d..bf16ba9f6fdb 100644 --- a/include/linux/slab_def.h +++ b/include/linux/slab_def.h @@ -60,6 +60,9 @@ struct kmem_cache { atomic_t allocmiss; atomic_t freehit; atomic_t freemiss; +#ifdef CONFIG_DEBUG_SLAB_LEAK + atomic_t store_user_clean; +#endif /* * If debugging is enabled, then the allocator can add additional @@ -72,8 +75,23 @@ struct kmem_cache { #ifdef CONFIG_MEMCG_KMEM struct memcg_cache_params memcg_params; #endif +#ifdef CONFIG_KASAN + struct kasan_cache kasan_info; +#endif struct kmem_cache_node *node[MAX_NUMNODES]; }; +static inline void *nearest_obj(struct kmem_cache *cache, struct page *page, + void *x) +{ + void *object = x - (x - page->s_mem) % cache->size; + void *last_object = page->s_mem + (cache->num - 1) * cache->size; + + if (unlikely(object > last_object)) + return last_object; + else + return object; +} + #endif /* _LINUX_SLAB_DEF_H */ diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index f4e857e920cd..fd720e3dd1b8 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -99,6 +99,11 @@ struct kmem_cache { */ int remote_node_defrag_ratio; #endif + +#ifdef CONFIG_KASAN + struct kasan_cache kasan_info; +#endif + struct kmem_cache_node *node[MAX_NUMNODES]; }; @@ -130,4 +135,15 @@ static inline void *virt_to_obj(struct kmem_cache *s, void object_err(struct kmem_cache *s, struct page *page, u8 *object, char *reason); +static inline void *nearest_obj(struct kmem_cache *cache, struct page *page, + void *x) { + void *object = x - (x - page_address(page)) % cache->size; + void *last_object = page_address(page) + + (page->objects - 1) * cache->size; + if (unlikely(object > last_object)) + return last_object; + else + return object; +} + #endif /* _LINUX_SLUB_DEF_H */ diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index c6f0f0d0e17e..00a1f330f93a 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -116,6 +116,12 @@ struct attribute_group { .show = _name##_show, \ } +#define __ATTR_RO_MODE(_name, _mode) { \ + .attr = { .name = __stringify(_name), \ + .mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \ + .show = _name##_show, \ +} + #define __ATTR_WO(_name) { \ .attr = { .name = __stringify(_name), .mode = S_IWUSR }, \ .store = _name##_store, \ diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index dae99d7d2bc0..706a7017885c 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -165,11 +165,11 @@ struct expander_device { struct sata_device { unsigned int class; - struct smp_resp rps_resp; /* report_phy_sata_resp */ u8 port_no; /* port number, if this is a PM (Port) */ struct ata_port *ap; struct ata_host ata_host; + struct smp_resp rps_resp ____cacheline_aligned; /* report_phy_sata_resp */ u8 fis[ATA_RESP_FIS_SIZE]; }; diff --git a/kernel/audit.c b/kernel/audit.c index 34f690b9213a..e228b88dfd23 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -80,13 +80,13 @@ static int audit_initialized; #define AUDIT_OFF 0 #define AUDIT_ON 1 #define AUDIT_LOCKED 2 -u32 audit_enabled; -u32 audit_ever_enabled; +u32 audit_enabled = AUDIT_OFF; +u32 audit_ever_enabled = !!AUDIT_OFF; EXPORT_SYMBOL_GPL(audit_enabled); /* Default state when kernel boots without any parameters. */ -static u32 audit_default; +static u32 audit_default = AUDIT_OFF; /* If auditing cannot proceed, audit_failure selects what happens. */ static u32 audit_failure = AUDIT_FAIL_PRINTK; @@ -1185,8 +1185,6 @@ static int __init audit_init(void) skb_queue_head_init(&audit_skb_queue); skb_queue_head_init(&audit_skb_hold_queue); audit_initialized = AUDIT_INITIALIZED; - audit_enabled = audit_default; - audit_ever_enabled |= !!audit_default; audit_log(NULL, GFP_KERNEL, AUDIT_KERNEL, "initialized"); @@ -1203,6 +1201,8 @@ static int __init audit_enable(char *str) audit_default = !!simple_strtol(str, NULL, 0); if (!audit_default) audit_initialized = AUDIT_DISABLED; + audit_enabled = audit_default; + audit_ever_enabled = !!audit_enabled; pr_info("%s\n", audit_default ? "enabled (after initialization)" : "disabled (until reboot)"); diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c index 0b891286a150..3990c1f73e45 100644 --- a/kernel/debug/kdb/kdb_io.c +++ b/kernel/debug/kdb/kdb_io.c @@ -357,7 +357,7 @@ poll_again: } kdb_printf("\n"); for (i = 0; i < count; i++) { - if (kallsyms_symbol_next(p_tmp, i) < 0) + if (WARN_ON(!kallsyms_symbol_next(p_tmp, i))) break; kdb_printf("%s ", p_tmp); *(p_tmp + len) = '\0'; diff --git a/kernel/jump_label.c b/kernel/jump_label.c index 453ec4232852..e863b2339174 100644 --- a/kernel/jump_label.c +++ b/kernel/jump_label.c @@ -553,7 +553,7 @@ static __init int jump_label_test(void) return 0; } -late_initcall(jump_label_test); +early_initcall(jump_label_test); #endif /* STATIC_KEYS_SELFTEST */ #endif /* HAVE_JUMP_LABEL */ diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c index d3765f0cb699..6c84b4d28914 100644 --- a/kernel/sched/cpufreq_schedutil.c +++ b/kernel/sched/cpufreq_schedutil.c @@ -130,8 +130,11 @@ static void sugov_update_commit(struct sugov_policy *sg_policy, u64 time, { struct cpufreq_policy *policy = sg_policy->policy; - if (sugov_up_down_rate_limit(sg_policy, time, next_freq)) + if (sugov_up_down_rate_limit(sg_policy, time, next_freq)) { + /* Reset cached freq as next_freq isn't changed */ + sg_policy->cached_raw_freq = 0; return; + } if (sg_policy->next_freq == next_freq) return; @@ -317,8 +320,12 @@ static void sugov_update_single(struct update_util_data *hook, u64 time, * Do not reduce the frequency if the CPU has not been idle * recently, as the reduction is likely to be premature then. */ - if (busy && next_f < sg_policy->next_freq) + if (busy && next_f < sg_policy->next_freq) { next_f = sg_policy->next_freq; + + /* Reset cached freq as next_freq has changed */ + sg_policy->cached_raw_freq = 0; + } } sugov_update_commit(sg_policy, time, next_f); } diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index e515311aa93c..5867512e4e8d 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -7747,7 +7747,8 @@ static int select_energy_cpu_brute(struct task_struct *p, int prev_cpu, int sync #ifdef CONFIG_SCHED_WALT - if (!walt_disabled && sysctl_sched_use_walt_cpu_util) + if (!walt_disabled && sysctl_sched_use_walt_cpu_util && + p->state == TASK_WAKING) delta = task_util(p); #endif /* Not enough spare capacity on previous cpu */ diff --git a/kernel/softirq.c b/kernel/softirq.c index 9029227e5f57..615ba59dbc10 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -236,7 +236,7 @@ static inline void lockdep_softirq_end(bool in_hardirq) { } #define long_softirq_pending() (local_softirq_pending() & LONG_SOFTIRQ_MASK) #define defer_for_rt() (long_softirq_pending() && cpupri_check_rt()) -asmlinkage __visible void __do_softirq(void) +asmlinkage __visible void __softirq_entry __do_softirq(void) { unsigned long end = jiffies + MAX_SOFTIRQ_TIME; unsigned long old_flags = current->flags; diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c index 96c75b0e9831..a804ee1b3ec6 100644 --- a/kernel/trace/trace_functions_graph.c +++ b/kernel/trace/trace_functions_graph.c @@ -8,6 +8,7 @@ */ #include <linux/uaccess.h> #include <linux/ftrace.h> +#include <linux/interrupt.h> #include <linux/slab.h> #include <linux/fs.h> diff --git a/kernel/workqueue.c b/kernel/workqueue.c index e56ba414839c..a719a4ad2e74 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -1493,6 +1493,7 @@ static void __queue_delayed_work(int cpu, struct workqueue_struct *wq, struct timer_list *timer = &dwork->timer; struct work_struct *work = &dwork->work; + WARN_ON_ONCE(!wq); WARN_ON_ONCE(timer->function != delayed_work_timer_fn || timer->data != (unsigned long)dwork); WARN_ON_ONCE(timer_pending(timer)); diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index e6ba5447672f..0e6dc4f85f51 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -5,8 +5,9 @@ if HAVE_ARCH_KASAN config KASAN bool "KASan: runtime memory debugger" - depends on SLUB_DEBUG + depends on SLUB || (SLAB && !DEBUG_SLAB) select CONSTRUCTORS + select STACKDEPOT help Enables kernel address sanitizer - runtime memory debugger, designed to find out-of-bounds accesses and use-after-free bugs. @@ -18,6 +19,8 @@ config KASAN For better error detection enable CONFIG_STACKTRACE. See KASAN_SANITIZE_ALL for selectively compiling files and directories with this compiler feature enabled. + Currently CONFIG_KASAN doesn't work with CONFIG_DEBUG_SLAB + (the resulting kernel does not boot). choice prompt "Instrumentation type" diff --git a/lib/Makefile b/lib/Makefile index 8df8a9cc3e0b..4a9e36ccb5e2 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -166,6 +166,7 @@ obj-$(CONFIG_SG_SPLIT) += sg_split.o obj-$(CONFIG_STMP_DEVICE) += stmp_device.o obj-$(CONFIG_STACKDEPOT) += stackdepot.o +KASAN_SANITIZE_stackdepot.o := n libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \ fdt_empty_tree.o diff --git a/lib/asn1_decoder.c b/lib/asn1_decoder.c index 4fa2e54b3f59..76d110301251 100644 --- a/lib/asn1_decoder.c +++ b/lib/asn1_decoder.c @@ -312,42 +312,47 @@ next_op: /* Decide how to handle the operation */ switch (op) { - case ASN1_OP_MATCH_ANY_ACT: - case ASN1_OP_MATCH_ANY_ACT_OR_SKIP: - case ASN1_OP_COND_MATCH_ANY_ACT: - case ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP: - ret = actions[machine[pc + 1]](context, hdr, tag, data + dp, len); - if (ret < 0) - return ret; - goto skip_data; - - case ASN1_OP_MATCH_ACT: - case ASN1_OP_MATCH_ACT_OR_SKIP: - case ASN1_OP_COND_MATCH_ACT_OR_SKIP: - ret = actions[machine[pc + 2]](context, hdr, tag, data + dp, len); - if (ret < 0) - return ret; - goto skip_data; - case ASN1_OP_MATCH: case ASN1_OP_MATCH_OR_SKIP: + case ASN1_OP_MATCH_ACT: + case ASN1_OP_MATCH_ACT_OR_SKIP: case ASN1_OP_MATCH_ANY: case ASN1_OP_MATCH_ANY_OR_SKIP: + case ASN1_OP_MATCH_ANY_ACT: + case ASN1_OP_MATCH_ANY_ACT_OR_SKIP: case ASN1_OP_COND_MATCH_OR_SKIP: + case ASN1_OP_COND_MATCH_ACT_OR_SKIP: case ASN1_OP_COND_MATCH_ANY: case ASN1_OP_COND_MATCH_ANY_OR_SKIP: - skip_data: + case ASN1_OP_COND_MATCH_ANY_ACT: + case ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP: + if (!(flags & FLAG_CONS)) { if (flags & FLAG_INDEFINITE_LENGTH) { + size_t tmp = dp; + ret = asn1_find_indefinite_length( - data, datalen, &dp, &len, &errmsg); + data, datalen, &tmp, &len, &errmsg); if (ret < 0) goto error; - } else { - dp += len; } pr_debug("- LEAF: %zu\n", len); } + + if (op & ASN1_OP_MATCH__ACT) { + unsigned char act; + + if (op & ASN1_OP_MATCH__ANY) + act = machine[pc + 1]; + else + act = machine[pc + 2]; + ret = actions[act](context, hdr, tag, data + dp, len); + if (ret < 0) + return ret; + } + + if (!(flags & FLAG_CONS)) + dp += len; pc += asn1_op_lengths[op]; goto next_op; @@ -433,6 +438,8 @@ next_op: else act = machine[pc + 1]; ret = actions[act](context, hdr, 0, data + tdp, len); + if (ret < 0) + return ret; } pc += asn1_op_lengths[op]; goto next_op; diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index e3952e9c8ec0..c6368ae93fe6 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -353,6 +353,10 @@ static int ddebug_parse_query(char *words[], int nwords, if (parse_lineno(last, &query->last_lineno) < 0) return -EINVAL; + /* special case for last lineno not specified */ + if (query->last_lineno == 0) + query->last_lineno = UINT_MAX; + if (query->last_lineno < query->first_lineno) { pr_err("last-line:%d < 1st-line:%d\n", query->last_lineno, diff --git a/lib/genalloc.c b/lib/genalloc.c index 27aa9c629d13..e4303fb2a7b2 100644 --- a/lib/genalloc.c +++ b/lib/genalloc.c @@ -194,7 +194,7 @@ int gen_pool_add_virt(struct gen_pool *pool, unsigned long virt, phys_addr_t phy chunk->phys_addr = phys; chunk->start_addr = virt; chunk->end_addr = virt + size - 1; - atomic_set(&chunk->avail, size); + atomic_long_set(&chunk->avail, size); spin_lock(&pool->lock); list_add_rcu(&chunk->next_chunk, &pool->chunks); @@ -285,7 +285,7 @@ unsigned long gen_pool_alloc(struct gen_pool *pool, size_t size) nbits = (size + (1UL << order) - 1) >> order; rcu_read_lock(); list_for_each_entry_rcu(chunk, &pool->chunks, next_chunk) { - if (size > atomic_read(&chunk->avail)) + if (size > atomic_long_read(&chunk->avail)) continue; start_bit = 0; @@ -305,7 +305,7 @@ retry: addr = chunk->start_addr + ((unsigned long)start_bit << order); size = nbits << order; - atomic_sub(size, &chunk->avail); + atomic_long_sub(size, &chunk->avail); break; } rcu_read_unlock(); @@ -371,7 +371,7 @@ void gen_pool_free(struct gen_pool *pool, unsigned long addr, size_t size) remain = bitmap_clear_ll(chunk->bits, start_bit, nbits); BUG_ON(remain); size = nbits << order; - atomic_add(size, &chunk->avail); + atomic_long_add(size, &chunk->avail); rcu_read_unlock(); return; } @@ -445,7 +445,7 @@ size_t gen_pool_avail(struct gen_pool *pool) rcu_read_lock(); list_for_each_entry_rcu(chunk, &pool->chunks, next_chunk) - avail += atomic_read(&chunk->avail); + avail += atomic_long_read(&chunk->avail); rcu_read_unlock(); return avail; } diff --git a/lib/stackdepot.c b/lib/stackdepot.c index 076eb03e316b..c95589b6170c 100644 --- a/lib/stackdepot.c +++ b/lib/stackdepot.c @@ -50,7 +50,7 @@ STACK_ALLOC_ALIGN) #define STACK_ALLOC_INDEX_BITS (DEPOT_STACK_BITS - \ STACK_ALLOC_NULL_PROTECTION_BITS - STACK_ALLOC_OFFSET_BITS) -#define STACK_ALLOC_SLABS_CAP 1024 +#define STACK_ALLOC_SLABS_CAP 8192 #define STACK_ALLOC_MAX_SLABS \ (((1LL << (STACK_ALLOC_INDEX_BITS)) < STACK_ALLOC_SLABS_CAP) ? \ (1LL << (STACK_ALLOC_INDEX_BITS)) : STACK_ALLOC_SLABS_CAP) @@ -192,6 +192,7 @@ void depot_fetch_stack(depot_stack_handle_t handle, struct stack_trace *trace) trace->entries = stack->entries; trace->skip = 0; } +EXPORT_SYMBOL_GPL(depot_fetch_stack); /** * depot_save_stack - save stack in a stack depot. @@ -283,3 +284,4 @@ exit: fast_exit: return retval; } +EXPORT_SYMBOL_GPL(depot_save_stack); diff --git a/lib/test_kasan.c b/lib/test_kasan.c index c32f3b0048dc..0e70ecc12fe2 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -12,10 +12,19 @@ #define pr_fmt(fmt) "kasan test: %s " fmt, __func__ #include <linux/kernel.h> +#include <linux/mman.h> +#include <linux/mm.h> #include <linux/printk.h> #include <linux/slab.h> #include <linux/string.h> +#include <linux/uaccess.h> #include <linux/module.h> +#include <linux/kasan.h> + +/* + * Note: test functions are marked noinline so that their names appear in + * reports. + */ static noinline void __init kmalloc_oob_right(void) { @@ -65,11 +74,34 @@ static noinline void __init kmalloc_node_oob_right(void) kfree(ptr); } -static noinline void __init kmalloc_large_oob_right(void) +#ifdef CONFIG_SLUB +static noinline void __init kmalloc_pagealloc_oob_right(void) { char *ptr; size_t size = KMALLOC_MAX_CACHE_SIZE + 10; + /* Allocate a chunk that does not fit into a SLUB cache to trigger + * the page allocator fallback. + */ + pr_info("kmalloc pagealloc allocation: out-of-bounds to right\n"); + ptr = kmalloc(size, GFP_KERNEL); + if (!ptr) { + pr_err("Allocation failed\n"); + return; + } + + ptr[size] = 0; + kfree(ptr); +} +#endif + +static noinline void __init kmalloc_large_oob_right(void) +{ + char *ptr; + size_t size = KMALLOC_MAX_CACHE_SIZE - 256; + /* Allocate a chunk that is large enough, but still fits into a slab + * and does not trigger the page allocator fallback in SLUB. + */ pr_info("kmalloc large allocation: out-of-bounds to right\n"); ptr = kmalloc(size, GFP_KERNEL); if (!ptr) { @@ -271,6 +303,8 @@ static noinline void __init kmalloc_uaf2(void) } ptr1[40] = 'x'; + if (ptr1 == ptr2) + pr_err("Could not detect use-after-free: ptr1 == ptr2\n"); kfree(ptr2); } @@ -319,11 +353,107 @@ static noinline void __init kasan_stack_oob(void) *(volatile char *)p; } +static noinline void __init ksize_unpoisons_memory(void) +{ + char *ptr; + size_t size = 123, real_size = size; + + pr_info("ksize() unpoisons the whole allocated chunk\n"); + ptr = kmalloc(size, GFP_KERNEL); + if (!ptr) { + pr_err("Allocation failed\n"); + return; + } + real_size = ksize(ptr); + /* This access doesn't trigger an error. */ + ptr[size] = 'x'; + /* This one does. */ + ptr[real_size] = 'y'; + kfree(ptr); +} + +static noinline void __init copy_user_test(void) +{ + char *kmem; + char __user *usermem; + size_t size = 10; + int unused; + + kmem = kmalloc(size, GFP_KERNEL); + if (!kmem) + return; + + usermem = (char __user *)vm_mmap(NULL, 0, PAGE_SIZE, + PROT_READ | PROT_WRITE | PROT_EXEC, + MAP_ANONYMOUS | MAP_PRIVATE, 0); + if (IS_ERR(usermem)) { + pr_err("Failed to allocate user memory\n"); + kfree(kmem); + return; + } + + pr_info("out-of-bounds in copy_from_user()\n"); + unused = copy_from_user(kmem, usermem, size + 1); + + pr_info("out-of-bounds in copy_to_user()\n"); + unused = copy_to_user(usermem, kmem, size + 1); + + pr_info("out-of-bounds in __copy_from_user()\n"); + unused = __copy_from_user(kmem, usermem, size + 1); + + pr_info("out-of-bounds in __copy_to_user()\n"); + unused = __copy_to_user(usermem, kmem, size + 1); + + pr_info("out-of-bounds in __copy_from_user_inatomic()\n"); + unused = __copy_from_user_inatomic(kmem, usermem, size + 1); + + pr_info("out-of-bounds in __copy_to_user_inatomic()\n"); + unused = __copy_to_user_inatomic(usermem, kmem, size + 1); + + pr_info("out-of-bounds in strncpy_from_user()\n"); + unused = strncpy_from_user(kmem, usermem, size + 1); + + vm_munmap((unsigned long)usermem, PAGE_SIZE); + kfree(kmem); +} + +static noinline void __init use_after_scope_test(void) +{ + volatile char *volatile p; + + pr_info("use-after-scope on int\n"); + { + int local = 0; + + p = (char *)&local; + } + p[0] = 1; + p[3] = 1; + + pr_info("use-after-scope on array\n"); + { + char local[1024] = {0}; + + p = local; + } + p[0] = 1; + p[1023] = 1; +} + static int __init kmalloc_tests_init(void) { + /* + * Temporarily enable multi-shot mode. Otherwise, we'd only get a + * report for the first case. + */ + bool multishot = kasan_save_enable_multi_shot(); + kmalloc_oob_right(); kmalloc_oob_left(); kmalloc_node_oob_right(); +#ifdef CONFIG_SLUB + kmalloc_pagealloc_oob_right(); +#endif kmalloc_large_oob_right(); kmalloc_oob_krealloc_more(); kmalloc_oob_krealloc_less(); @@ -339,6 +469,12 @@ static int __init kmalloc_tests_init(void) kmem_cache_oob(); kasan_stack_oob(); kasan_global_oob(); + ksize_unpoisons_memory(); + copy_user_test(); + use_after_scope_test(); + + kasan_restore_multi_shot(multishot); + return -EAGAIN; } diff --git a/mm/Makefile b/mm/Makefile index 130d06ac56e0..25965e6594cc 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -3,6 +3,7 @@ # KASAN_SANITIZE_slab_common.o := n +KASAN_SANITIZE_slab.o := n KASAN_SANITIZE_slub.o := n # Since __builtin_frame_address does work as used, disable the warning. diff --git a/mm/dmapool.c b/mm/dmapool.c index 57312b5d6e12..2821500e8123 100644 --- a/mm/dmapool.c +++ b/mm/dmapool.c @@ -452,13 +452,11 @@ void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t dma) } spin_unlock_irqrestore(&pool->lock, flags); if (pool->dev) - dev_err(pool->dev, "dma_pool_free %s, dma %Lx " - "already free\n", pool->name, - (unsigned long long)dma); + dev_err(pool->dev, "dma_pool_free %s, dma %Lx already free\n", + pool->name, (unsigned long long)dma); else - printk(KERN_ERR "dma_pool_free %s, dma %Lx " - "already free\n", pool->name, - (unsigned long long)dma); + printk(KERN_ERR "dma_pool_free %s, dma %Lx already free\n", + pool->name, (unsigned long long)dma); return; } } diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 8f3769ec8575..d64d48ca789c 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -135,8 +135,7 @@ static void set_recommended_min_free_kbytes(void) if (recommended_min > min_free_kbytes) { if (user_min_free_kbytes >= 0) - pr_info("raising min_free_kbytes from %d to %lu " - "to help transparent hugepage allocations\n", + pr_info("raising min_free_kbytes from %d to %lu to help transparent hugepage allocations\n", min_free_kbytes, recommended_min); min_free_kbytes = recommended_min; @@ -1566,35 +1565,69 @@ int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, { struct mm_struct *mm = vma->vm_mm; spinlock_t *ptl; + pmd_t entry; + bool preserve_write; + int ret = 0; - if (__pmd_trans_huge_lock(pmd, vma, &ptl) == 1) { - pmd_t entry; - bool preserve_write = prot_numa && pmd_write(*pmd); - ret = 1; + if (__pmd_trans_huge_lock(pmd, vma, &ptl) != 1) + return 0; - /* - * Avoid trapping faults against the zero page. The read-only - * data is likely to be read-cached on the local CPU and - * local/remote hits to the zero page are not interesting. - */ - if (prot_numa && is_huge_zero_pmd(*pmd)) { - spin_unlock(ptl); - return ret; - } + preserve_write = prot_numa && pmd_write(*pmd); + ret = 1; - if (!prot_numa || !pmd_protnone(*pmd)) { - entry = pmdp_huge_get_and_clear_notify(mm, addr, pmd); - entry = pmd_modify(entry, newprot); - if (preserve_write) - entry = pmd_mkwrite(entry); - ret = HPAGE_PMD_NR; - set_pmd_at(mm, addr, pmd, entry); - BUG_ON(!preserve_write && pmd_write(entry)); - } - spin_unlock(ptl); - } + /* + * Avoid trapping faults against the zero page. The read-only + * data is likely to be read-cached on the local CPU and + * local/remote hits to the zero page are not interesting. + */ + if (prot_numa && is_huge_zero_pmd(*pmd)) + goto unlock; + if (prot_numa && pmd_protnone(*pmd)) + goto unlock; + + /* + * In case prot_numa, we are under down_read(mmap_sem). It's critical + * to not clear pmd intermittently to avoid race with MADV_DONTNEED + * which is also under down_read(mmap_sem): + * + * CPU0: CPU1: + * change_huge_pmd(prot_numa=1) + * pmdp_huge_get_and_clear_notify() + * madvise_dontneed() + * zap_pmd_range() + * pmd_trans_huge(*pmd) == 0 (without ptl) + * // skip the pmd + * set_pmd_at(); + * // pmd is re-established + * + * The race makes MADV_DONTNEED miss the huge pmd and don't clear it + * which may break userspace. + * + * pmdp_invalidate() is required to make sure we don't miss + * dirty/young flags set by hardware. + */ + entry = *pmd; + pmdp_invalidate(vma, addr, pmd); + + /* + * Recover dirty/young flags. It relies on pmdp_invalidate to not + * corrupt them. + */ + if (pmd_dirty(*pmd)) + entry = pmd_mkdirty(entry); + if (pmd_young(*pmd)) + entry = pmd_mkyoung(entry); + + entry = pmd_modify(entry, newprot); + if (preserve_write) + entry = pmd_mkwrite(entry); + ret = HPAGE_PMD_NR; + set_pmd_at(mm, addr, pmd, entry); + BUG_ON(!preserve_write && pmd_write(entry)); +unlock: + spin_unlock(ptl); return ret; } diff --git a/mm/kasan/Makefile b/mm/kasan/Makefile index a61460d9f5b0..f4eadbc8dcb9 100644 --- a/mm/kasan/Makefile +++ b/mm/kasan/Makefile @@ -6,4 +6,4 @@ CFLAGS_REMOVE_kasan.o = -pg # see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63533 CFLAGS_kasan.o := $(call cc-option, -fno-conserve-stack -fno-stack-protector) -obj-y := kasan.o report.o kasan_init.o +obj-y := kasan.o report.o kasan_init.o quarantine.o diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c index 1ad20ade8c91..cfdbe1ce9ef8 100644 --- a/mm/kasan/kasan.c +++ b/mm/kasan/kasan.c @@ -17,7 +17,9 @@ #define DISABLE_BRANCH_PROFILING #include <linux/export.h> +#include <linux/interrupt.h> #include <linux/init.h> +#include <linux/kasan.h> #include <linux/kernel.h> #include <linux/kmemleak.h> #include <linux/linkage.h> @@ -32,11 +34,21 @@ #include <linux/string.h> #include <linux/types.h> #include <linux/vmalloc.h> -#include <linux/kasan.h> +#include <linux/bug.h> #include "kasan.h" #include "../slab.h" +void kasan_enable_current(void) +{ + current->kasan_depth++; +} + +void kasan_disable_current(void) +{ + current->kasan_depth--; +} + /* * Poisons the shadow memory for 'size' bytes starting from 'addr'. * Memory addresses should be aligned to KASAN_SHADOW_SCALE_SIZE. @@ -61,7 +73,7 @@ void kasan_unpoison_shadow(const void *address, size_t size) } } -static void __kasan_unpoison_stack(struct task_struct *task, void *sp) +static void __kasan_unpoison_stack(struct task_struct *task, const void *sp) { void *base = task_stack_page(task); size_t size = sp - base; @@ -76,9 +88,31 @@ void kasan_unpoison_task_stack(struct task_struct *task) } /* Unpoison the stack for the current task beyond a watermark sp value. */ -asmlinkage void kasan_unpoison_remaining_stack(void *sp) +asmlinkage void kasan_unpoison_task_stack_below(const void *watermark) { - __kasan_unpoison_stack(current, sp); + /* + * Calculate the task stack base address. Avoid using 'current' + * because this function is called by early resume code which hasn't + * yet set up the percpu register (%gs). + */ + void *base = (void *)((unsigned long)watermark & ~(THREAD_SIZE - 1)); + + kasan_unpoison_shadow(base, watermark - base); +} + +/* + * Clear all poison for the region between the current SP and a provided + * watermark value, as is sometimes required prior to hand-crafted asm function + * returns in the middle of functions. + */ +void kasan_unpoison_stack_above_sp_to(const void *watermark) +{ + const void *sp = __builtin_frame_address(0); + size_t size = watermark - sp; + + if (WARN_ON(sp > watermark)) + return; + kasan_unpoison_shadow(sp, size); } /* @@ -272,32 +306,48 @@ static __always_inline bool memory_is_poisoned(unsigned long addr, size_t size) return memory_is_poisoned_n(addr, size); } - -static __always_inline void check_memory_region(unsigned long addr, - size_t size, bool write) +static __always_inline void check_memory_region_inline(unsigned long addr, + size_t size, bool write, + unsigned long ret_ip) { if (unlikely(size == 0)) return; if (unlikely((void *)addr < kasan_shadow_to_mem((void *)KASAN_SHADOW_START))) { - kasan_report(addr, size, write, _RET_IP_); + kasan_report(addr, size, write, ret_ip); return; } if (likely(!memory_is_poisoned(addr, size))) return; - kasan_report(addr, size, write, _RET_IP_); + kasan_report(addr, size, write, ret_ip); +} + +static void check_memory_region(unsigned long addr, + size_t size, bool write, + unsigned long ret_ip) +{ + check_memory_region_inline(addr, size, write, ret_ip); +} + +void kasan_check_read(const void *p, unsigned int size) +{ + check_memory_region((unsigned long)p, size, false, _RET_IP_); } +EXPORT_SYMBOL(kasan_check_read); -void __asan_loadN(unsigned long addr, size_t size); -void __asan_storeN(unsigned long addr, size_t size); +void kasan_check_write(const void *p, unsigned int size) +{ + check_memory_region((unsigned long)p, size, true, _RET_IP_); +} +EXPORT_SYMBOL(kasan_check_write); #undef memset void *memset(void *addr, int c, size_t len) { - __asan_storeN((unsigned long)addr, len); + check_memory_region((unsigned long)addr, len, true, _RET_IP_); return __memset(addr, c, len); } @@ -305,8 +355,8 @@ void *memset(void *addr, int c, size_t len) #undef memmove void *memmove(void *dest, const void *src, size_t len) { - __asan_loadN((unsigned long)src, len); - __asan_storeN((unsigned long)dest, len); + check_memory_region((unsigned long)src, len, false, _RET_IP_); + check_memory_region((unsigned long)dest, len, true, _RET_IP_); return __memmove(dest, src, len); } @@ -314,8 +364,8 @@ void *memmove(void *dest, const void *src, size_t len) #undef memcpy void *memcpy(void *dest, const void *src, size_t len) { - __asan_loadN((unsigned long)src, len); - __asan_storeN((unsigned long)dest, len); + check_memory_region((unsigned long)src, len, false, _RET_IP_); + check_memory_region((unsigned long)dest, len, true, _RET_IP_); return __memcpy(dest, src, len); } @@ -334,6 +384,80 @@ void kasan_free_pages(struct page *page, unsigned int order) KASAN_FREE_PAGE); } +/* + * Adaptive redzone policy taken from the userspace AddressSanitizer runtime. + * For larger allocations larger redzones are used. + */ +static size_t optimal_redzone(size_t object_size) +{ + int rz = + object_size <= 64 - 16 ? 16 : + object_size <= 128 - 32 ? 32 : + object_size <= 512 - 64 ? 64 : + object_size <= 4096 - 128 ? 128 : + object_size <= (1 << 14) - 256 ? 256 : + object_size <= (1 << 15) - 512 ? 512 : + object_size <= (1 << 16) - 1024 ? 1024 : 2048; + return rz; +} + +void kasan_cache_create(struct kmem_cache *cache, size_t *size, + unsigned long *flags) +{ + int redzone_adjust; + int orig_size = *size; + + /* Add alloc meta. */ + cache->kasan_info.alloc_meta_offset = *size; + *size += sizeof(struct kasan_alloc_meta); + + /* Add free meta. */ + if (cache->flags & SLAB_DESTROY_BY_RCU || cache->ctor || + cache->object_size < sizeof(struct kasan_free_meta)) { + cache->kasan_info.free_meta_offset = *size; + *size += sizeof(struct kasan_free_meta); + } + redzone_adjust = optimal_redzone(cache->object_size) - + (*size - cache->object_size); + + if (redzone_adjust > 0) + *size += redzone_adjust; + + *size = min(KMALLOC_MAX_SIZE, max(*size, cache->object_size + + optimal_redzone(cache->object_size))); + + /* + * If the metadata doesn't fit, don't enable KASAN at all. + */ + if (*size <= cache->kasan_info.alloc_meta_offset || + *size <= cache->kasan_info.free_meta_offset) { + cache->kasan_info.alloc_meta_offset = 0; + cache->kasan_info.free_meta_offset = 0; + *size = orig_size; + return; + } + + *flags |= SLAB_KASAN; +} + +void kasan_cache_shrink(struct kmem_cache *cache) +{ + quarantine_remove_cache(cache); +} + +void kasan_cache_shutdown(struct kmem_cache *cache) +{ + quarantine_remove_cache(cache); +} + +size_t kasan_metadata_size(struct kmem_cache *cache) +{ + return (cache->kasan_info.alloc_meta_offset ? + sizeof(struct kasan_alloc_meta) : 0) + + (cache->kasan_info.free_meta_offset ? + sizeof(struct kasan_free_meta) : 0); +} + void kasan_poison_slab(struct page *page) { kasan_poison_shadow(page_address(page), @@ -353,12 +477,84 @@ void kasan_poison_object_data(struct kmem_cache *cache, void *object) KASAN_KMALLOC_REDZONE); } -void kasan_slab_alloc(struct kmem_cache *cache, void *object) +static inline int in_irqentry_text(unsigned long ptr) +{ + return (ptr >= (unsigned long)&__irqentry_text_start && + ptr < (unsigned long)&__irqentry_text_end) || + (ptr >= (unsigned long)&__softirqentry_text_start && + ptr < (unsigned long)&__softirqentry_text_end); +} + +static inline void filter_irq_stacks(struct stack_trace *trace) +{ + int i; + + if (!trace->nr_entries) + return; + for (i = 0; i < trace->nr_entries; i++) + if (in_irqentry_text(trace->entries[i])) { + /* Include the irqentry function into the stack. */ + trace->nr_entries = i + 1; + break; + } +} + +static inline depot_stack_handle_t save_stack(gfp_t flags) +{ + unsigned long entries[KASAN_STACK_DEPTH]; + struct stack_trace trace = { + .nr_entries = 0, + .entries = entries, + .max_entries = KASAN_STACK_DEPTH, + .skip = 0 + }; + + save_stack_trace(&trace); + filter_irq_stacks(&trace); + if (trace.nr_entries != 0 && + trace.entries[trace.nr_entries-1] == ULONG_MAX) + trace.nr_entries--; + + return depot_save_stack(&trace, flags); +} + +static inline void set_track(struct kasan_track *track, gfp_t flags) +{ + track->pid = current->pid; + track->stack = save_stack(flags); +} + +struct kasan_alloc_meta *get_alloc_info(struct kmem_cache *cache, + const void *object) +{ + BUILD_BUG_ON(sizeof(struct kasan_alloc_meta) > 32); + return (void *)object + cache->kasan_info.alloc_meta_offset; +} + +struct kasan_free_meta *get_free_info(struct kmem_cache *cache, + const void *object) +{ + BUILD_BUG_ON(sizeof(struct kasan_free_meta) > 32); + return (void *)object + cache->kasan_info.free_meta_offset; +} + +void kasan_init_slab_obj(struct kmem_cache *cache, const void *object) +{ + struct kasan_alloc_meta *alloc_info; + + if (!(cache->flags & SLAB_KASAN)) + return; + + alloc_info = get_alloc_info(cache, object); + __memset(alloc_info, 0, sizeof(*alloc_info)); +} + +void kasan_slab_alloc(struct kmem_cache *cache, void *object, gfp_t flags) { - kasan_kmalloc(cache, object, cache->object_size); + kasan_kmalloc(cache, object, cache->object_size, flags); } -void kasan_slab_free(struct kmem_cache *cache, void *object) +static void kasan_poison_slab_free(struct kmem_cache *cache, void *object) { unsigned long size = cache->object_size; unsigned long rounded_up_size = round_up(size, KASAN_SHADOW_SCALE_SIZE); @@ -370,11 +566,40 @@ void kasan_slab_free(struct kmem_cache *cache, void *object) kasan_poison_shadow(object, rounded_up_size, KASAN_KMALLOC_FREE); } -void kasan_kmalloc(struct kmem_cache *cache, const void *object, size_t size) +bool kasan_slab_free(struct kmem_cache *cache, void *object) +{ + s8 shadow_byte; + + /* RCU slabs could be legally used after free within the RCU period */ + if (unlikely(cache->flags & SLAB_DESTROY_BY_RCU)) + return false; + + shadow_byte = READ_ONCE(*(s8 *)kasan_mem_to_shadow(object)); + if (shadow_byte < 0 || shadow_byte >= KASAN_SHADOW_SCALE_SIZE) { + kasan_report_double_free(cache, object, + __builtin_return_address(1)); + return true; + } + + kasan_poison_slab_free(cache, object); + + if (unlikely(!(cache->flags & SLAB_KASAN))) + return false; + + set_track(&get_alloc_info(cache, object)->free_track, GFP_NOWAIT); + quarantine_put(get_free_info(cache, object), cache); + return true; +} + +void kasan_kmalloc(struct kmem_cache *cache, const void *object, size_t size, + gfp_t flags) { unsigned long redzone_start; unsigned long redzone_end; + if (gfpflags_allow_blocking(flags)) + quarantine_reduce(); + if (unlikely(object == NULL)) return; @@ -386,15 +611,21 @@ void kasan_kmalloc(struct kmem_cache *cache, const void *object, size_t size) kasan_unpoison_shadow(object, size); kasan_poison_shadow((void *)redzone_start, redzone_end - redzone_start, KASAN_KMALLOC_REDZONE); + + if (cache->flags & SLAB_KASAN) + set_track(&get_alloc_info(cache, object)->alloc_track, flags); } EXPORT_SYMBOL(kasan_kmalloc); -void kasan_kmalloc_large(const void *ptr, size_t size) +void kasan_kmalloc_large(const void *ptr, size_t size, gfp_t flags) { struct page *page; unsigned long redzone_start; unsigned long redzone_end; + if (gfpflags_allow_blocking(flags)) + quarantine_reduce(); + if (unlikely(ptr == NULL)) return; @@ -408,7 +639,7 @@ void kasan_kmalloc_large(const void *ptr, size_t size) KASAN_PAGE_REDZONE); } -void kasan_krealloc(const void *object, size_t size) +void kasan_krealloc(const void *object, size_t size, gfp_t flags) { struct page *page; @@ -418,12 +649,12 @@ void kasan_krealloc(const void *object, size_t size) page = virt_to_head_page(object); if (unlikely(!PageSlab(page))) - kasan_kmalloc_large(object, size); + kasan_kmalloc_large(object, size, flags); else - kasan_kmalloc(page->slab_cache, object, size); + kasan_kmalloc(page->slab_cache, object, size, flags); } -void kasan_kfree(void *ptr) +void kasan_poison_kfree(void *ptr) { struct page *page; @@ -433,7 +664,7 @@ void kasan_kfree(void *ptr) kasan_poison_shadow(ptr, PAGE_SIZE << compound_order(page), KASAN_FREE_PAGE); else - kasan_slab_free(page->slab_cache, ptr); + kasan_poison_slab_free(page->slab_cache, ptr); } void kasan_kfree_large(const void *ptr) @@ -503,22 +734,22 @@ void __asan_unregister_globals(struct kasan_global *globals, size_t size) } EXPORT_SYMBOL(__asan_unregister_globals); -#define DEFINE_ASAN_LOAD_STORE(size) \ - void __asan_load##size(unsigned long addr) \ - { \ - check_memory_region(addr, size, false); \ - } \ - EXPORT_SYMBOL(__asan_load##size); \ - __alias(__asan_load##size) \ - void __asan_load##size##_noabort(unsigned long); \ - EXPORT_SYMBOL(__asan_load##size##_noabort); \ - void __asan_store##size(unsigned long addr) \ - { \ - check_memory_region(addr, size, true); \ - } \ - EXPORT_SYMBOL(__asan_store##size); \ - __alias(__asan_store##size) \ - void __asan_store##size##_noabort(unsigned long); \ +#define DEFINE_ASAN_LOAD_STORE(size) \ + void __asan_load##size(unsigned long addr) \ + { \ + check_memory_region_inline(addr, size, false, _RET_IP_);\ + } \ + EXPORT_SYMBOL(__asan_load##size); \ + __alias(__asan_load##size) \ + void __asan_load##size##_noabort(unsigned long); \ + EXPORT_SYMBOL(__asan_load##size##_noabort); \ + void __asan_store##size(unsigned long addr) \ + { \ + check_memory_region_inline(addr, size, true, _RET_IP_); \ + } \ + EXPORT_SYMBOL(__asan_store##size); \ + __alias(__asan_store##size) \ + void __asan_store##size##_noabort(unsigned long); \ EXPORT_SYMBOL(__asan_store##size##_noabort) DEFINE_ASAN_LOAD_STORE(1); @@ -529,7 +760,7 @@ DEFINE_ASAN_LOAD_STORE(16); void __asan_loadN(unsigned long addr, size_t size) { - check_memory_region(addr, size, false); + check_memory_region(addr, size, false, _RET_IP_); } EXPORT_SYMBOL(__asan_loadN); @@ -539,7 +770,7 @@ EXPORT_SYMBOL(__asan_loadN_noabort); void __asan_storeN(unsigned long addr, size_t size) { - check_memory_region(addr, size, true); + check_memory_region(addr, size, true, _RET_IP_); } EXPORT_SYMBOL(__asan_storeN); @@ -551,6 +782,25 @@ EXPORT_SYMBOL(__asan_storeN_noabort); void __asan_handle_no_return(void) {} EXPORT_SYMBOL(__asan_handle_no_return); +/* Emitted by compiler to poison large objects when they go out of scope. */ +void __asan_poison_stack_memory(const void *addr, size_t size) +{ + /* + * Addr is KASAN_SHADOW_SCALE_SIZE-aligned and the object is surrounded + * by redzones, so we simply round up size to simplify logic. + */ + kasan_poison_shadow(addr, round_up(size, KASAN_SHADOW_SCALE_SIZE), + KASAN_USE_AFTER_SCOPE); +} +EXPORT_SYMBOL(__asan_poison_stack_memory); + +/* Emitted by compiler to unpoison large objects when they go into scope. */ +void __asan_unpoison_stack_memory(const void *addr, size_t size) +{ + kasan_unpoison_shadow(addr, size); +} +EXPORT_SYMBOL(__asan_unpoison_stack_memory); + #ifdef CONFIG_MEMORY_HOTPLUG static int kasan_mem_notifier(struct notifier_block *nb, unsigned long action, void *data) @@ -560,8 +810,8 @@ static int kasan_mem_notifier(struct notifier_block *nb, static int __init kasan_memhotplug_init(void) { - pr_err("WARNING: KASAN doesn't support memory hot-add\n"); - pr_err("Memory hot-add will be disabled\n"); + pr_info("WARNING: KASAN doesn't support memory hot-add\n"); + pr_info("Memory hot-add will be disabled\n"); hotplug_memory_notifier(kasan_mem_notifier, 0); diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 37ff0ab6a8ff..1229298cce64 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -2,6 +2,7 @@ #define __MM_KASAN_KASAN_H #include <linux/kasan.h> +#include <linux/stackdepot.h> #define KASAN_SHADOW_SCALE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) #define KASAN_SHADOW_MASK (KASAN_SHADOW_SCALE_SIZE - 1) @@ -20,6 +21,7 @@ #define KASAN_STACK_MID 0xF2 #define KASAN_STACK_RIGHT 0xF3 #define KASAN_STACK_PARTIAL 0xF4 +#define KASAN_USE_AFTER_SCOPE 0xF8 /* Don't break randconfig/all*config builds */ #ifndef KASAN_ABI_VERSION @@ -57,18 +59,57 @@ struct kasan_global { #endif }; +/** + * Structures to keep alloc and free tracks * + */ + +#define KASAN_STACK_DEPTH 64 + +struct kasan_track { + u32 pid; + depot_stack_handle_t stack; +}; + +struct kasan_alloc_meta { + struct kasan_track alloc_track; + struct kasan_track free_track; +}; + +struct qlist_node { + struct qlist_node *next; +}; +struct kasan_free_meta { + /* This field is used while the object is in the quarantine. + * Otherwise it might be used for the allocator freelist. + */ + struct qlist_node quarantine_link; +}; + +struct kasan_alloc_meta *get_alloc_info(struct kmem_cache *cache, + const void *object); +struct kasan_free_meta *get_free_info(struct kmem_cache *cache, + const void *object); + static inline const void *kasan_shadow_to_mem(const void *shadow_addr) { return (void *)(((unsigned long)shadow_addr - KASAN_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT); } -static inline bool kasan_report_enabled(void) -{ - return !current->kasan_depth; -} - void kasan_report(unsigned long addr, size_t size, bool is_write, unsigned long ip); +void kasan_report_double_free(struct kmem_cache *cache, void *object, + void *ip); + +#if defined(CONFIG_SLAB) || defined(CONFIG_SLUB) +void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache); +void quarantine_reduce(void); +void quarantine_remove_cache(struct kmem_cache *cache); +#else +static inline void quarantine_put(struct kasan_free_meta *info, + struct kmem_cache *cache) { } +static inline void quarantine_reduce(void) { } +static inline void quarantine_remove_cache(struct kmem_cache *cache) { } +#endif #endif diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c new file mode 100644 index 000000000000..3a8ddf8baf7d --- /dev/null +++ b/mm/kasan/quarantine.c @@ -0,0 +1,328 @@ +/* + * KASAN quarantine. + * + * Author: Alexander Potapenko <glider@google.com> + * Copyright (C) 2016 Google, Inc. + * + * Based on code by Dmitry Chernenkov. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + */ + +#include <linux/gfp.h> +#include <linux/hash.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/percpu.h> +#include <linux/printk.h> +#include <linux/shrinker.h> +#include <linux/slab.h> +#include <linux/srcu.h> +#include <linux/string.h> +#include <linux/types.h> + +#include "../slab.h" +#include "kasan.h" + +/* Data structure and operations for quarantine queues. */ + +/* + * Each queue is a signle-linked list, which also stores the total size of + * objects inside of it. + */ +struct qlist_head { + struct qlist_node *head; + struct qlist_node *tail; + size_t bytes; +}; + +#define QLIST_INIT { NULL, NULL, 0 } + +static bool qlist_empty(struct qlist_head *q) +{ + return !q->head; +} + +static void qlist_init(struct qlist_head *q) +{ + q->head = q->tail = NULL; + q->bytes = 0; +} + +static void qlist_put(struct qlist_head *q, struct qlist_node *qlink, + size_t size) +{ + if (unlikely(qlist_empty(q))) + q->head = qlink; + else + q->tail->next = qlink; + q->tail = qlink; + qlink->next = NULL; + q->bytes += size; +} + +static void qlist_move_all(struct qlist_head *from, struct qlist_head *to) +{ + if (unlikely(qlist_empty(from))) + return; + + if (qlist_empty(to)) { + *to = *from; + qlist_init(from); + return; + } + + to->tail->next = from->head; + to->tail = from->tail; + to->bytes += from->bytes; + + qlist_init(from); +} + +#define QUARANTINE_PERCPU_SIZE (1 << 20) +#define QUARANTINE_BATCHES \ + (1024 > 4 * CONFIG_NR_CPUS ? 1024 : 4 * CONFIG_NR_CPUS) + +/* + * The object quarantine consists of per-cpu queues and a global queue, + * guarded by quarantine_lock. + */ +static DEFINE_PER_CPU(struct qlist_head, cpu_quarantine); + +/* Round-robin FIFO array of batches. */ +static struct qlist_head global_quarantine[QUARANTINE_BATCHES]; +static int quarantine_head; +static int quarantine_tail; +/* Total size of all objects in global_quarantine across all batches. */ +static unsigned long quarantine_size; +static DEFINE_SPINLOCK(quarantine_lock); +DEFINE_STATIC_SRCU(remove_cache_srcu); + +/* Maximum size of the global queue. */ +static unsigned long quarantine_max_size; + +/* + * Target size of a batch in global_quarantine. + * Usually equal to QUARANTINE_PERCPU_SIZE unless we have too much RAM. + */ +static unsigned long quarantine_batch_size; + +/* + * The fraction of physical memory the quarantine is allowed to occupy. + * Quarantine doesn't support memory shrinker with SLAB allocator, so we keep + * the ratio low to avoid OOM. + */ +#define QUARANTINE_FRACTION 32 + +static struct kmem_cache *qlink_to_cache(struct qlist_node *qlink) +{ + return virt_to_head_page(qlink)->slab_cache; +} + +static void *qlink_to_object(struct qlist_node *qlink, struct kmem_cache *cache) +{ + struct kasan_free_meta *free_info = + container_of(qlink, struct kasan_free_meta, + quarantine_link); + + return ((void *)free_info) - cache->kasan_info.free_meta_offset; +} + +static void qlink_free(struct qlist_node *qlink, struct kmem_cache *cache) +{ + void *object = qlink_to_object(qlink, cache); + unsigned long flags; + + if (IS_ENABLED(CONFIG_SLAB)) + local_irq_save(flags); + + ___cache_free(cache, object, _THIS_IP_); + + if (IS_ENABLED(CONFIG_SLAB)) + local_irq_restore(flags); +} + +static void qlist_free_all(struct qlist_head *q, struct kmem_cache *cache) +{ + struct qlist_node *qlink; + + if (unlikely(qlist_empty(q))) + return; + + qlink = q->head; + while (qlink) { + struct kmem_cache *obj_cache = + cache ? cache : qlink_to_cache(qlink); + struct qlist_node *next = qlink->next; + + qlink_free(qlink, obj_cache); + qlink = next; + } + qlist_init(q); +} + +void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache) +{ + unsigned long flags; + struct qlist_head *q; + struct qlist_head temp = QLIST_INIT; + + /* + * Note: irq must be disabled until after we move the batch to the + * global quarantine. Otherwise quarantine_remove_cache() can miss + * some objects belonging to the cache if they are in our local temp + * list. quarantine_remove_cache() executes on_each_cpu() at the + * beginning which ensures that it either sees the objects in per-cpu + * lists or in the global quarantine. + */ + local_irq_save(flags); + + q = this_cpu_ptr(&cpu_quarantine); + qlist_put(q, &info->quarantine_link, cache->size); + if (unlikely(q->bytes > QUARANTINE_PERCPU_SIZE)) { + qlist_move_all(q, &temp); + + spin_lock(&quarantine_lock); + WRITE_ONCE(quarantine_size, quarantine_size + temp.bytes); + qlist_move_all(&temp, &global_quarantine[quarantine_tail]); + if (global_quarantine[quarantine_tail].bytes >= + READ_ONCE(quarantine_batch_size)) { + int new_tail; + + new_tail = quarantine_tail + 1; + if (new_tail == QUARANTINE_BATCHES) + new_tail = 0; + if (new_tail != quarantine_head) + quarantine_tail = new_tail; + } + spin_unlock(&quarantine_lock); + } + + local_irq_restore(flags); +} + +void quarantine_reduce(void) +{ + size_t total_size, new_quarantine_size, percpu_quarantines; + unsigned long flags; + int srcu_idx; + struct qlist_head to_free = QLIST_INIT; + + if (likely(READ_ONCE(quarantine_size) <= + READ_ONCE(quarantine_max_size))) + return; + + /* + * srcu critical section ensures that quarantine_remove_cache() + * will not miss objects belonging to the cache while they are in our + * local to_free list. srcu is chosen because (1) it gives us private + * grace period domain that does not interfere with anything else, + * and (2) it allows synchronize_srcu() to return without waiting + * if there are no pending read critical sections (which is the + * expected case). + */ + srcu_idx = srcu_read_lock(&remove_cache_srcu); + spin_lock_irqsave(&quarantine_lock, flags); + + /* + * Update quarantine size in case of hotplug. Allocate a fraction of + * the installed memory to quarantine minus per-cpu queue limits. + */ + total_size = (READ_ONCE(totalram_pages) << PAGE_SHIFT) / + QUARANTINE_FRACTION; + percpu_quarantines = QUARANTINE_PERCPU_SIZE * num_online_cpus(); + new_quarantine_size = (total_size < percpu_quarantines) ? + 0 : total_size - percpu_quarantines; + WRITE_ONCE(quarantine_max_size, new_quarantine_size); + /* Aim at consuming at most 1/2 of slots in quarantine. */ + WRITE_ONCE(quarantine_batch_size, max((size_t)QUARANTINE_PERCPU_SIZE, + 2 * total_size / QUARANTINE_BATCHES)); + + if (likely(quarantine_size > quarantine_max_size)) { + qlist_move_all(&global_quarantine[quarantine_head], &to_free); + WRITE_ONCE(quarantine_size, quarantine_size - to_free.bytes); + quarantine_head++; + if (quarantine_head == QUARANTINE_BATCHES) + quarantine_head = 0; + } + + spin_unlock_irqrestore(&quarantine_lock, flags); + + qlist_free_all(&to_free, NULL); + srcu_read_unlock(&remove_cache_srcu, srcu_idx); +} + +static void qlist_move_cache(struct qlist_head *from, + struct qlist_head *to, + struct kmem_cache *cache) +{ + struct qlist_node *curr; + + if (unlikely(qlist_empty(from))) + return; + + curr = from->head; + qlist_init(from); + while (curr) { + struct qlist_node *next = curr->next; + struct kmem_cache *obj_cache = qlink_to_cache(curr); + + if (obj_cache == cache) + qlist_put(to, curr, obj_cache->size); + else + qlist_put(from, curr, obj_cache->size); + + curr = next; + } +} + +static void per_cpu_remove_cache(void *arg) +{ + struct kmem_cache *cache = arg; + struct qlist_head to_free = QLIST_INIT; + struct qlist_head *q; + + q = this_cpu_ptr(&cpu_quarantine); + qlist_move_cache(q, &to_free, cache); + qlist_free_all(&to_free, cache); +} + +/* Free all quarantined objects belonging to cache. */ +void quarantine_remove_cache(struct kmem_cache *cache) +{ + unsigned long flags, i; + struct qlist_head to_free = QLIST_INIT; + + /* + * Must be careful to not miss any objects that are being moved from + * per-cpu list to the global quarantine in quarantine_put(), + * nor objects being freed in quarantine_reduce(). on_each_cpu() + * achieves the first goal, while synchronize_srcu() achieves the + * second. + */ + on_each_cpu(per_cpu_remove_cache, cache, 1); + + spin_lock_irqsave(&quarantine_lock, flags); + for (i = 0; i < QUARANTINE_BATCHES; i++) { + if (qlist_empty(&global_quarantine[i])) + continue; + qlist_move_cache(&global_quarantine[i], &to_free, cache); + /* Scanning whole quarantine can take a while. */ + spin_unlock_irqrestore(&quarantine_lock, flags); + cond_resched(); + spin_lock_irqsave(&quarantine_lock, flags); + } + spin_unlock_irqrestore(&quarantine_lock, flags); + + qlist_free_all(&to_free, cache); + + synchronize_srcu(&remove_cache_srcu); +} diff --git a/mm/kasan/report.c b/mm/kasan/report.c index b4e31f78ae69..04bb1d3eb9ec 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -13,12 +13,15 @@ * */ +#include <linux/bitops.h> #include <linux/ftrace.h> +#include <linux/init.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/printk.h> #include <linux/sched.h> #include <linux/slab.h> +#include <linux/stackdepot.h> #include <linux/stacktrace.h> #include <linux/string.h> #include <linux/types.h> @@ -48,7 +51,13 @@ static const void *find_first_bad_addr(const void *addr, size_t size) return first_bad_addr; } -static void print_error_description(struct kasan_access_info *info) +static bool addr_has_shadow(struct kasan_access_info *info) +{ + return (info->access_addr >= + kasan_shadow_to_mem((void *)KASAN_SHADOW_START)); +} + +static const char *get_shadow_bug_type(struct kasan_access_info *info) { const char *bug_type = "unknown-crash"; u8 *shadow_addr; @@ -90,14 +99,44 @@ static void print_error_description(struct kasan_access_info *info) case KASAN_KMALLOC_FREE: bug_type = "use-after-free"; break; + case KASAN_USE_AFTER_SCOPE: + bug_type = "use-after-scope"; + break; } - pr_err("BUG: KASAN: %s in %pS at addr %p\n", - bug_type, (void *)info->ip, - info->access_addr); - pr_err("%s of size %zu by task %s/%d\n", - info->is_write ? "Write" : "Read", - info->access_size, current->comm, task_pid_nr(current)); + return bug_type; +} + +static const char *get_wild_bug_type(struct kasan_access_info *info) +{ + const char *bug_type = "unknown-crash"; + + if ((unsigned long)info->access_addr < PAGE_SIZE) + bug_type = "null-ptr-deref"; + else if ((unsigned long)info->access_addr < TASK_SIZE) + bug_type = "user-memory-access"; + else + bug_type = "wild-memory-access"; + + return bug_type; +} + +static const char *get_bug_type(struct kasan_access_info *info) +{ + if (addr_has_shadow(info)) + return get_shadow_bug_type(info); + return get_wild_bug_type(info); +} + +static void print_error_description(struct kasan_access_info *info) +{ + const char *bug_type = get_bug_type(info); + + pr_err("BUG: KASAN: %s in %pS\n", + bug_type, (void *)info->ip); + pr_err("%s of size %zu at addr %p by task %s/%d\n", + info->is_write ? "Write" : "Read", info->access_size, + info->access_addr, current->comm, task_pid_nr(current)); } static inline bool kernel_or_module_addr(const void *addr) @@ -116,39 +155,119 @@ static inline bool init_task_stack_addr(const void *addr) sizeof(init_thread_union.stack)); } -static void print_address_description(struct kasan_access_info *info) +static DEFINE_SPINLOCK(report_lock); + +static void kasan_start_report(unsigned long *flags) +{ + /* + * Make sure we don't end up in loop. + */ + kasan_disable_current(); + spin_lock_irqsave(&report_lock, *flags); + pr_err("==================================================================\n"); +} + +static void kasan_end_report(unsigned long *flags) +{ + pr_err("==================================================================\n"); + add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); + spin_unlock_irqrestore(&report_lock, *flags); + if (panic_on_warn) + panic("panic_on_warn set ...\n"); + kasan_enable_current(); +} + +static void print_track(struct kasan_track *track, const char *prefix) { - const void *addr = info->access_addr; + pr_err("%s by task %u:\n", prefix, track->pid); + if (track->stack) { + struct stack_trace trace; + depot_fetch_stack(track->stack, &trace); + print_stack_trace(&trace, 0); + } else { + pr_err("(stack is not available)\n"); + } +} + +static struct page *addr_to_page(const void *addr) +{ if ((addr >= (void *)PAGE_OFFSET) && - (addr < high_memory)) { - struct page *page = virt_to_head_page(addr); + (addr < high_memory)) + return virt_to_head_page(addr); + return NULL; +} - if (PageSlab(page)) { - void *object; - struct kmem_cache *cache = page->slab_cache; - void *last_object; +static void describe_object_addr(struct kmem_cache *cache, void *object, + const void *addr) +{ + unsigned long access_addr = (unsigned long)addr; + unsigned long object_addr = (unsigned long)object; + const char *rel_type; + int rel_bytes; - object = virt_to_obj(cache, page_address(page), addr); - last_object = page_address(page) + - page->objects * cache->size; + pr_err("The buggy address belongs to the object at %p\n" + " which belongs to the cache %s of size %d\n", + object, cache->name, cache->object_size); - if (unlikely(object > last_object)) - object = last_object; /* we hit into padding */ + if (!addr) + return; - object_err(cache, page, object, - "kasan: bad access detected"); - return; - } - dump_page(page, "kasan: bad access detected"); + if (access_addr < object_addr) { + rel_type = "to the left"; + rel_bytes = object_addr - access_addr; + } else if (access_addr >= object_addr + cache->object_size) { + rel_type = "to the right"; + rel_bytes = access_addr - (object_addr + cache->object_size); + } else { + rel_type = "inside"; + rel_bytes = access_addr - object_addr; } - if (kernel_or_module_addr(addr)) { - if (!init_task_stack_addr(addr)) - pr_err("Address belongs to variable %pS\n", addr); + pr_err("The buggy address is located %d bytes %s of\n" + " %d-byte region [%p, %p)\n", + rel_bytes, rel_type, cache->object_size, (void *)object_addr, + (void *)(object_addr + cache->object_size)); +} + +static void describe_object(struct kmem_cache *cache, void *object, + const void *addr) +{ + struct kasan_alloc_meta *alloc_info = get_alloc_info(cache, object); + + if (cache->flags & SLAB_KASAN) { + print_track(&alloc_info->alloc_track, "Allocated"); + pr_err("\n"); + print_track(&alloc_info->free_track, "Freed"); + pr_err("\n"); } + describe_object_addr(cache, object, addr); +} + +static void print_address_description(void *addr) +{ + struct page *page = addr_to_page(addr); + dump_stack(); + pr_err("\n"); + + if (page && PageSlab(page)) { + struct kmem_cache *cache = page->slab_cache; + void *object = nearest_obj(cache, page, addr); + + describe_object(cache, object, addr); + } + + if (kernel_or_module_addr(addr) && !init_task_stack_addr(addr)) { + pr_err("The buggy address belongs to the variable:\n"); + pr_err(" %pS\n", addr); + } + + if (page) { + pr_err("The buggy address belongs to the page:\n"); + dump_page(page, "kasan: bad access detected"); + } } static bool row_is_guilty(const void *row, const void *guilty) @@ -203,45 +322,72 @@ static void print_shadow_for_address(const void *addr) } } -static DEFINE_SPINLOCK(report_lock); +void kasan_report_double_free(struct kmem_cache *cache, void *object, + void *ip) +{ + unsigned long flags; + + kasan_start_report(&flags); + pr_err("BUG: KASAN: double-free or invalid-free in %pS\n", ip); + pr_err("\n"); + print_address_description(object); + pr_err("\n"); + print_shadow_for_address(object); + kasan_end_report(&flags); +} static void kasan_report_error(struct kasan_access_info *info) { unsigned long flags; - const char *bug_type; - /* - * Make sure we don't end up in loop. - */ - kasan_disable_current(); - spin_lock_irqsave(&report_lock, flags); - pr_err("=================================" - "=================================\n"); - if (info->access_addr < - kasan_shadow_to_mem((void *)KASAN_SHADOW_START)) { - if ((unsigned long)info->access_addr < PAGE_SIZE) - bug_type = "null-ptr-deref"; - else if ((unsigned long)info->access_addr < TASK_SIZE) - bug_type = "user-memory-access"; - else - bug_type = "wild-memory-access"; - pr_err("BUG: KASAN: %s on address %p\n", - bug_type, info->access_addr); - pr_err("%s of size %zu by task %s/%d\n", - info->is_write ? "Write" : "Read", - info->access_size, current->comm, - task_pid_nr(current)); + kasan_start_report(&flags); + + print_error_description(info); + pr_err("\n"); + + if (!addr_has_shadow(info)) { dump_stack(); } else { - print_error_description(info); - print_address_description(info); + print_address_description((void *)info->access_addr); + pr_err("\n"); print_shadow_for_address(info->first_bad_addr); } - pr_err("=================================" - "=================================\n"); - add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE); - spin_unlock_irqrestore(&report_lock, flags); - kasan_enable_current(); + + kasan_end_report(&flags); +} + +static unsigned long kasan_flags; + +#define KASAN_BIT_REPORTED 0 +#define KASAN_BIT_MULTI_SHOT 1 + +bool kasan_save_enable_multi_shot(void) +{ + return test_and_set_bit(KASAN_BIT_MULTI_SHOT, &kasan_flags); +} +EXPORT_SYMBOL_GPL(kasan_save_enable_multi_shot); + +void kasan_restore_multi_shot(bool enabled) +{ + if (!enabled) + clear_bit(KASAN_BIT_MULTI_SHOT, &kasan_flags); +} +EXPORT_SYMBOL_GPL(kasan_restore_multi_shot); + +static int __init kasan_set_multi_shot(char *str) +{ + set_bit(KASAN_BIT_MULTI_SHOT, &kasan_flags); + return 1; +} +__setup("kasan_multi_shot", kasan_set_multi_shot); + +static inline bool kasan_report_enabled(void) +{ + if (current->kasan_depth) + return false; + if (test_bit(KASAN_BIT_MULTI_SHOT, &kasan_flags)) + return true; + return !test_and_set_bit(KASAN_BIT_REPORTED, &kasan_flags); } void kasan_report(unsigned long addr, size_t size, diff --git a/mm/kmemcheck.c b/mm/kmemcheck.c index cab58bb592d8..e6347772bbda 100644 --- a/mm/kmemcheck.c +++ b/mm/kmemcheck.c @@ -20,8 +20,7 @@ void kmemcheck_alloc_shadow(struct page *page, int order, gfp_t flags, int node) shadow = alloc_pages_node(node, flags | __GFP_NOTRACK, order); if (!shadow) { if (printk_ratelimit()) - printk(KERN_ERR "kmemcheck: failed to allocate " - "shadow bitmap\n"); + printk(KERN_ERR "kmemcheck: failed to allocate shadow bitmap\n"); return; } diff --git a/mm/kmemleak.c b/mm/kmemleak.c index e5979e423bc2..a59afd00a006 100644 --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -607,8 +607,7 @@ static struct kmemleak_object *create_object(unsigned long ptr, size_t size, else if (parent->pointer + parent->size <= ptr) link = &parent->rb_node.rb_right; else { - kmemleak_stop("Cannot insert 0x%lx into the object " - "search tree (overlaps existing)\n", + kmemleak_stop("Cannot insert 0x%lx into the object search tree (overlaps existing)\n", ptr); /* * No need for parent->lock here since "parent" cannot @@ -681,8 +680,8 @@ static void delete_object_part(unsigned long ptr, size_t size) object = find_and_remove_object(ptr, 1); if (!object) { #ifdef DEBUG - kmemleak_warn("Partially freeing unknown object at 0x%08lx " - "(size %zu)\n", ptr, size); + kmemleak_warn("Partially freeing unknown object at 0x%08lx (size %zu)\n", + ptr, size); #endif return; } @@ -728,8 +727,8 @@ static void paint_ptr(unsigned long ptr, int color) object = find_and_get_object(ptr, 0); if (!object) { - kmemleak_warn("Trying to color unknown object " - "at 0x%08lx as %s\n", ptr, + kmemleak_warn("Trying to color unknown object at 0x%08lx as %s\n", + ptr, (color == KMEMLEAK_GREY) ? "Grey" : (color == KMEMLEAK_BLACK) ? "Black" : "Unknown"); return; @@ -1474,8 +1473,8 @@ static void kmemleak_scan(void) if (new_leaks) { kmemleak_found_leaks = true; - pr_info("%d new suspected memory leaks (see " - "/sys/kernel/debug/kmemleak)\n", new_leaks); + pr_info("%d new suspected memory leaks (see /sys/kernel/debug/kmemleak)\n", + new_leaks); } } @@ -1806,8 +1805,7 @@ static void kmemleak_do_cleanup(struct work_struct *work) if (!kmemleak_found_leaks) __kmemleak_do_cleanup(); else - pr_info("Kmemleak disabled without freeing internal data. " - "Reclaim the memory with \"echo clear > /sys/kernel/debug/kmemleak\"\n"); + pr_info("Kmemleak disabled without freeing internal data. Reclaim the memory with \"echo clear > /sys/kernel/debug/kmemleak\".\n"); } static DECLARE_WORK(cleanup_work, kmemleak_do_cleanup); diff --git a/mm/memblock.c b/mm/memblock.c index fb63a9cc00fd..e39ef2fe5c17 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -245,8 +245,7 @@ phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t size, * so we use WARN_ONCE() here to see the stack trace if * fail happens. */ - WARN_ONCE(1, "memblock: bottom-up allocation failed, " - "memory hotunplug may be affected\n"); + WARN_ONCE(1, "memblock: bottom-up allocation failed, memory hotunplug may be affected\n"); } return __memblock_find_range_top_down(start, end, size, align, nid, diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 81957b076d66..2e80a7bedef3 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1935,8 +1935,7 @@ static int check_memblock_offlined_cb(struct memory_block *mem, void *arg) beginpa = PFN_PHYS(section_nr_to_pfn(mem->start_section_nr)); endpa = PFN_PHYS(section_nr_to_pfn(mem->end_section_nr + 1))-1; - pr_warn("removing memory fails, because memory " - "[%pa-%pa] is onlined\n", + pr_warn("removing memory fails, because memory [%pa-%pa] is onlined\n", &beginpa, &endpa); } diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 177668a9c267..62e4af5b287f 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2514,9 +2514,7 @@ static void __init check_numabalancing_enable(void) set_numabalancing_state(numabalancing_override == 1); if (num_online_nodes() > 1 && !numabalancing_override) { - pr_info("%s automatic NUMA balancing. " - "Configure with numa_balancing= or the " - "kernel.numa_balancing sysctl", + pr_info("%s automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl\n", numabalancing_default ? "Enabling" : "Disabling"); set_numabalancing_state(numabalancing_default); } diff --git a/mm/mempool.c b/mm/mempool.c index 7924f4f58a6d..5ba6c8b3b814 100644 --- a/mm/mempool.c +++ b/mm/mempool.c @@ -104,20 +104,16 @@ static inline void poison_element(mempool_t *pool, void *element) static void kasan_poison_element(mempool_t *pool, void *element) { - if (pool->alloc == mempool_alloc_slab) - kasan_slab_free(pool->pool_data, element); - if (pool->alloc == mempool_kmalloc) - kasan_kfree(element); + if (pool->alloc == mempool_alloc_slab || pool->alloc == mempool_kmalloc) + kasan_poison_kfree(element); if (pool->alloc == mempool_alloc_pages) kasan_free_pages(element, (unsigned long)pool->pool_data); } -static void kasan_unpoison_element(mempool_t *pool, void *element) +static void kasan_unpoison_element(mempool_t *pool, void *element, gfp_t flags) { - if (pool->alloc == mempool_alloc_slab) - kasan_slab_alloc(pool->pool_data, element); - if (pool->alloc == mempool_kmalloc) - kasan_krealloc(element, (size_t)pool->pool_data); + if (pool->alloc == mempool_alloc_slab || pool->alloc == mempool_kmalloc) + kasan_unpoison_slab(element); if (pool->alloc == mempool_alloc_pages) kasan_alloc_pages(element, (unsigned long)pool->pool_data); } @@ -130,12 +126,12 @@ static void add_element(mempool_t *pool, void *element) pool->elements[pool->curr_nr++] = element; } -static void *remove_element(mempool_t *pool) +static void *remove_element(mempool_t *pool, gfp_t flags) { void *element = pool->elements[--pool->curr_nr]; BUG_ON(pool->curr_nr < 0); - kasan_unpoison_element(pool, element); + kasan_unpoison_element(pool, element, flags); check_element(pool, element); return element; } @@ -154,7 +150,7 @@ void mempool_destroy(mempool_t *pool) return; while (pool->curr_nr) { - void *element = remove_element(pool); + void *element = remove_element(pool, GFP_KERNEL); pool->free(element, pool->pool_data); } kfree(pool->elements); @@ -250,7 +246,7 @@ int mempool_resize(mempool_t *pool, int new_min_nr) spin_lock_irqsave(&pool->lock, flags); if (new_min_nr <= pool->min_nr) { while (new_min_nr < pool->curr_nr) { - element = remove_element(pool); + element = remove_element(pool, GFP_KERNEL); spin_unlock_irqrestore(&pool->lock, flags); pool->free(element, pool->pool_data); spin_lock_irqsave(&pool->lock, flags); @@ -336,7 +332,7 @@ repeat_alloc: spin_lock_irqsave(&pool->lock, flags); if (likely(pool->curr_nr)) { - element = remove_element(pool); + element = remove_element(pool, gfp_temp); spin_unlock_irqrestore(&pool->lock, flags); /* paired with rmb in mempool_free(), read comment there */ smp_wmb(); diff --git a/mm/mmap.c b/mm/mmap.c index 16743bf76a88..2d5b7b08e535 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2711,8 +2711,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, unsigned long ret = -EINVAL; struct file *file; - pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. " - "See Documentation/vm/remap_file_pages.txt.\n", + pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt.\n", current->comm, current->pid); if (prot) diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 90515f4d9786..67237b7cb177 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -386,8 +386,7 @@ void dump_tasks(struct mem_cgroup *memcg, const nodemask_t *nodemask) static void dump_header(struct oom_control *oc, struct task_struct *p, struct mem_cgroup *memcg) { - pr_warning("%s invoked oom-killer: gfp_mask=0x%x, order=%d, " - "oom_score_adj=%hd\n", + pr_warning("%s invoked oom-killer: gfp_mask=0x%x, order=%d, oom_score_adj=%hd\n", current->comm, oc->gfp_mask, oc->order, current->signal->oom_score_adj); cpuset_print_current_mems_allowed(); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 2ea77b967709..496bcba7d367 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -4070,8 +4070,7 @@ static int __parse_numa_zonelist_order(char *s) user_zonelist_order = ZONELIST_ORDER_ZONE; } else { printk(KERN_WARNING - "Ignoring invalid numa_zonelist_order value: " - "%s\n", s); + "Ignoring invalid numa_zonelist_order value: %s\n", s); return -EINVAL; } return 0; @@ -4536,12 +4535,11 @@ void __ref build_all_zonelists(pg_data_t *pgdat, struct zone *zone) else page_group_by_mobility_disabled = 0; - pr_info("Built %i zonelists in %s order, mobility grouping %s. " - "Total pages: %ld\n", - nr_online_nodes, - zonelist_order_name[current_zonelist_order], - page_group_by_mobility_disabled ? "off" : "on", - vm_total_pages); + pr_info("Built %i zonelists in %s order, mobility grouping %s. Total pages: %ld\n", + nr_online_nodes, + zonelist_order_name[current_zonelist_order], + page_group_by_mobility_disabled ? "off" : "on", + vm_total_pages); #ifdef CONFIG_NUMA pr_info("Policy zone: %s\n", zone_names[policy_zone]); #endif @@ -6015,22 +6013,21 @@ void __init mem_init_print_info(const char *str) #undef adj_init_size - pr_info("Memory: %luK/%luK available " - "(%luK kernel code, %luK rwdata, %luK rodata, " - "%luK init, %luK bss, %luK reserved, %luK cma-reserved" + pr_info("Memory: %luK/%luK available (%luK kernel code, %luK rwdata, %luK rodata, %luK init, %luK bss, %luK reserved, %luK cma-reserved" #ifdef CONFIG_HIGHMEM - ", %luK highmem" + ", %luK highmem" #endif - "%s%s)\n", - nr_free_pages() << (PAGE_SHIFT-10), physpages << (PAGE_SHIFT-10), - codesize >> 10, datasize >> 10, rosize >> 10, - (init_data_size + init_code_size) >> 10, bss_size >> 10, - (physpages - totalram_pages - totalcma_pages) << (PAGE_SHIFT-10), - totalcma_pages << (PAGE_SHIFT-10), + "%s%s)\n", + nr_free_pages() << (PAGE_SHIFT - 10), + physpages << (PAGE_SHIFT - 10), + codesize >> 10, datasize >> 10, rosize >> 10, + (init_data_size + init_code_size) >> 10, bss_size >> 10, + (physpages - totalram_pages - totalcma_pages) << (PAGE_SHIFT - 10), + totalcma_pages << (PAGE_SHIFT - 10), #ifdef CONFIG_HIGHMEM - totalhigh_pages << (PAGE_SHIFT-10), + totalhigh_pages << (PAGE_SHIFT - 10), #endif - str ? ", " : "", str ? str : ""); + str ? ", " : "", str ? str : ""); } /** diff --git a/mm/percpu.c b/mm/percpu.c index ef6353f0adbd..d9f91253953e 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -889,8 +889,8 @@ static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved, size = ALIGN(size, 2); if (unlikely(!size || size > PCPU_MIN_UNIT_SIZE || align > PAGE_SIZE)) { - WARN(true, "illegal size (%zu) or align (%zu) for " - "percpu allocation\n", size, align); + WARN(true, "illegal size (%zu) or align (%zu) for percpu allocation\n", + size, align); return NULL; } diff --git a/mm/slab.c b/mm/slab.c index 24a615d42d74..8fc762c178bd 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -390,36 +390,26 @@ static void **dbg_userword(struct kmem_cache *cachep, void *objp) #endif -#define OBJECT_FREE (0) -#define OBJECT_ACTIVE (1) - #ifdef CONFIG_DEBUG_SLAB_LEAK -static void set_obj_status(struct page *page, int idx, int val) +static inline bool is_store_user_clean(struct kmem_cache *cachep) { - int freelist_size; - char *status; - struct kmem_cache *cachep = page->slab_cache; - - freelist_size = cachep->num * sizeof(freelist_idx_t); - status = (char *)page->freelist + freelist_size; - status[idx] = val; + return atomic_read(&cachep->store_user_clean) == 1; } -static inline unsigned int get_obj_status(struct page *page, int idx) +static inline void set_store_user_clean(struct kmem_cache *cachep) { - int freelist_size; - char *status; - struct kmem_cache *cachep = page->slab_cache; - - freelist_size = cachep->num * sizeof(freelist_idx_t); - status = (char *)page->freelist + freelist_size; + atomic_set(&cachep->store_user_clean, 1); +} - return status[idx]; +static inline void set_store_user_dirty(struct kmem_cache *cachep) +{ + if (is_store_user_clean(cachep)) + atomic_set(&cachep->store_user_clean, 0); } #else -static inline void set_obj_status(struct page *page, int idx, int val) {} +static inline void set_store_user_dirty(struct kmem_cache *cachep) {} #endif @@ -480,9 +470,6 @@ static size_t calculate_freelist_size(int nr_objs, size_t align) size_t freelist_size; freelist_size = nr_objs * sizeof(freelist_idx_t); - if (IS_ENABLED(CONFIG_DEBUG_SLAB_LEAK)) - freelist_size += nr_objs * sizeof(char); - if (align) freelist_size = ALIGN(freelist_size, align); @@ -495,10 +482,7 @@ static int calculate_nr_objs(size_t slab_size, size_t buffer_size, int nr_objs; size_t remained_size; size_t freelist_size; - int extra_space = 0; - if (IS_ENABLED(CONFIG_DEBUG_SLAB_LEAK)) - extra_space = sizeof(char); /* * Ignore padding for the initial guess. The padding * is at most @align-1 bytes, and @buffer_size is at @@ -507,7 +491,7 @@ static int calculate_nr_objs(size_t slab_size, size_t buffer_size, * into the memory allocation when taking the padding * into account. */ - nr_objs = slab_size / (buffer_size + idx_size + extra_space); + nr_objs = slab_size / (buffer_size + idx_size); /* * This calculated number will be either the right @@ -1670,6 +1654,14 @@ static void kmem_rcu_free(struct rcu_head *head) } #if DEBUG +static bool is_debug_pagealloc_cache(struct kmem_cache *cachep) +{ + if (debug_pagealloc_enabled() && OFF_SLAB(cachep) && + (cachep->size % PAGE_SIZE) == 0) + return true; + + return false; +} #ifdef CONFIG_DEBUG_PAGEALLOC static void store_stackinfo(struct kmem_cache *cachep, unsigned long *addr, @@ -1703,6 +1695,23 @@ static void store_stackinfo(struct kmem_cache *cachep, unsigned long *addr, } *addr++ = 0x87654321; } + +static void slab_kernel_map(struct kmem_cache *cachep, void *objp, + int map, unsigned long caller) +{ + if (!is_debug_pagealloc_cache(cachep)) + return; + + if (caller) + store_stackinfo(cachep, objp, caller); + + kernel_map_pages(virt_to_page(objp), cachep->size / PAGE_SIZE, map); +} + +#else +static inline void slab_kernel_map(struct kmem_cache *cachep, void *objp, + int map, unsigned long caller) {} + #endif static void poison_obj(struct kmem_cache *cachep, void *addr, unsigned char val) @@ -1733,11 +1742,9 @@ static void dump_line(char *data, int offset, int limit) if (bad_count == 1) { error ^= POISON_FREE; if (!(error & (error - 1))) { - printk(KERN_ERR "Single bit error detected. Probably " - "bad RAM.\n"); + printk(KERN_ERR "Single bit error detected. Probably bad RAM.\n"); #ifdef CONFIG_X86 - printk(KERN_ERR "Run memtest86+ or a similar memory " - "test tool.\n"); + printk(KERN_ERR "Run memtest86+ or a similar memory test tool.\n"); #else printk(KERN_ERR "Run a memory test tool.\n"); #endif @@ -1781,6 +1788,9 @@ static void check_poison_obj(struct kmem_cache *cachep, void *objp) int size, i; int lines = 0; + if (is_debug_pagealloc_cache(cachep)) + return; + realobj = (char *)objp + obj_offset(cachep); size = cachep->object_size; @@ -1846,24 +1856,14 @@ static void slab_destroy_debugcheck(struct kmem_cache *cachep, void *objp = index_to_obj(cachep, page, i); if (cachep->flags & SLAB_POISON) { -#ifdef CONFIG_DEBUG_PAGEALLOC - if (cachep->size % PAGE_SIZE == 0 && - OFF_SLAB(cachep)) - kernel_map_pages(virt_to_page(objp), - cachep->size / PAGE_SIZE, 1); - else - check_poison_obj(cachep, objp); -#else check_poison_obj(cachep, objp); -#endif + slab_kernel_map(cachep, objp, 1, 0); } if (cachep->flags & SLAB_RED_ZONE) { if (*dbg_redzone1(cachep, objp) != RED_INACTIVE) - slab_error(cachep, "start of a freed object " - "was overwritten"); + slab_error(cachep, "start of a freed object was overwritten"); if (*dbg_redzone2(cachep, objp) != RED_INACTIVE) - slab_error(cachep, "end of a freed object " - "was overwritten"); + slab_error(cachep, "end of a freed object was overwritten"); } } } @@ -1945,16 +1945,13 @@ static size_t calculate_slab_order(struct kmem_cache *cachep, break; if (flags & CFLGS_OFF_SLAB) { - size_t freelist_size_per_obj = sizeof(freelist_idx_t); /* * Max number of objs-per-slab for caches which * use off-slab slabs. Needed to avoid a possible * looping condition in cache_grow(). */ - if (IS_ENABLED(CONFIG_DEBUG_SLAB_LEAK)) - freelist_size_per_obj += sizeof(char); offslab_limit = size; - offslab_limit /= freelist_size_per_obj; + offslab_limit /= sizeof(freelist_idx_t); if (num > offslab_limit) break; @@ -2179,7 +2176,19 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) else size += BYTES_PER_WORD; } -#if FORCED_DEBUG && defined(CONFIG_DEBUG_PAGEALLOC) +#endif + + kasan_cache_create(cachep, &size, &flags); + + size = ALIGN(size, cachep->align); + /* + * We should restrict the number of objects in a slab to implement + * byte sized index. Refer comment on SLAB_OBJ_MIN_SIZE definition. + */ + if (FREELIST_BYTE_INDEX && size < SLAB_OBJ_MIN_SIZE) + size = ALIGN(SLAB_OBJ_MIN_SIZE, cachep->align); + +#if DEBUG /* * To activate debug pagealloc, off-slab management is necessary * requirement. In early phase of initialization, small sized slab @@ -2187,14 +2196,14 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) * to check size >= 256. It guarantees that all necessary small * sized slab is initialized in current slab initialization sequence. */ - if (!slab_early_init && size >= kmalloc_size(INDEX_NODE) && + if (debug_pagealloc_enabled() && (flags & SLAB_POISON) && + !slab_early_init && size >= kmalloc_size(INDEX_NODE) && size >= 256 && cachep->object_size > cache_line_size() && - ALIGN(size, cachep->align) < PAGE_SIZE) { - cachep->obj_offset += PAGE_SIZE - ALIGN(size, cachep->align); + size < PAGE_SIZE) { + cachep->obj_offset += PAGE_SIZE - size; size = PAGE_SIZE; } #endif -#endif /* * Determine if the slab management is 'on' or 'off' slab. @@ -2203,20 +2212,13 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) * SLAB_NOLEAKTRACE to avoid recursive calls into kmemleak) */ if (size >= OFF_SLAB_MIN_SIZE && !slab_early_init && - !(flags & SLAB_NOLEAKTRACE)) + !(flags & SLAB_NOLEAKTRACE)) { /* * Size is large, assume best to place the slab management obj * off-slab (should allow better packing of objs). */ flags |= CFLGS_OFF_SLAB; - - size = ALIGN(size, cachep->align); - /* - * We should restrict the number of objects in a slab to implement - * byte sized index. Refer comment on SLAB_OBJ_MIN_SIZE definition. - */ - if (FREELIST_BYTE_INDEX && size < SLAB_OBJ_MIN_SIZE) - size = ALIGN(SLAB_OBJ_MIN_SIZE, cachep->align); + } left_over = calculate_slab_order(cachep, size, cachep->align, flags); @@ -2237,15 +2239,6 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) if (flags & CFLGS_OFF_SLAB) { /* really off slab. No need for manual alignment */ freelist_size = calculate_freelist_size(cachep->num, 0); - -#ifdef CONFIG_PAGE_POISONING - /* If we're going to use the generic kernel_map_pages() - * poisoning, then it's going to smash the contents of - * the redzone and userword anyhow, so switch them off. - */ - if (size % PAGE_SIZE == 0 && flags & SLAB_POISON) - flags &= ~(SLAB_RED_ZONE | SLAB_STORE_USER); -#endif } cachep->colour_off = cache_line_size(); @@ -2261,7 +2254,19 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) cachep->size = size; cachep->reciprocal_buffer_size = reciprocal_value(size); - if (flags & CFLGS_OFF_SLAB) { +#if DEBUG + /* + * If we're going to use the generic kernel_map_pages() + * poisoning, then it's going to smash the contents of + * the redzone and userword anyhow, so switch them off. + */ + if (IS_ENABLED(CONFIG_PAGE_POISONING) && + (cachep->flags & SLAB_POISON) && + is_debug_pagealloc_cache(cachep)) + cachep->flags &= ~(SLAB_RED_ZONE | SLAB_STORE_USER); +#endif + + if (OFF_SLAB(cachep)) { cachep->freelist_cache = kmalloc_slab(freelist_size, 0u); /* * This is a possibility for one of the kmalloc_{dma,}_caches. @@ -2480,17 +2485,14 @@ static inline void set_free_obj(struct page *page, ((freelist_idx_t *)(page->freelist))[idx] = val; } -static void cache_init_objs(struct kmem_cache *cachep, - struct page *page) +static void cache_init_objs_debug(struct kmem_cache *cachep, struct page *page) { +#if DEBUG int i; for (i = 0; i < cachep->num; i++) { void *objp = index_to_obj(cachep, page, i); -#if DEBUG - /* need to poison the objs? */ - if (cachep->flags & SLAB_POISON) - poison_obj(cachep, objp, POISON_FREE); + kasan_init_slab_obj(cachep, objp); if (cachep->flags & SLAB_STORE_USER) *dbg_userword(cachep, objp) = NULL; @@ -2503,26 +2505,46 @@ static void cache_init_objs(struct kmem_cache *cachep, * cache which they are a constructor for. Otherwise, deadlock. * They must also be threaded. */ - if (cachep->ctor && !(cachep->flags & SLAB_POISON)) + if (cachep->ctor && !(cachep->flags & SLAB_POISON)) { + kasan_unpoison_object_data(cachep, + objp + obj_offset(cachep)); cachep->ctor(objp + obj_offset(cachep)); + kasan_poison_object_data( + cachep, objp + obj_offset(cachep)); + } if (cachep->flags & SLAB_RED_ZONE) { if (*dbg_redzone2(cachep, objp) != RED_INACTIVE) - slab_error(cachep, "constructor overwrote the" - " end of an object"); + slab_error(cachep, "constructor overwrote the end of an object"); if (*dbg_redzone1(cachep, objp) != RED_INACTIVE) - slab_error(cachep, "constructor overwrote the" - " start of an object"); + slab_error(cachep, "constructor overwrote the start of an object"); } - if ((cachep->size % PAGE_SIZE) == 0 && - OFF_SLAB(cachep) && cachep->flags & SLAB_POISON) - kernel_map_pages(virt_to_page(objp), - cachep->size / PAGE_SIZE, 0); -#else - if (cachep->ctor) - cachep->ctor(objp); + /* need to poison the objs? */ + if (cachep->flags & SLAB_POISON) { + poison_obj(cachep, objp, POISON_FREE); + slab_kernel_map(cachep, objp, 0, 0); + } + } #endif - set_obj_status(page, i, OBJECT_FREE); +} + +static void cache_init_objs(struct kmem_cache *cachep, + struct page *page) +{ + int i; + void *objp; + + cache_init_objs_debug(cachep, page); + + for (i = 0; i < cachep->num; i++) { + /* constructor could break poison info */ + if (DEBUG == 0 && cachep->ctor) { + objp = index_to_obj(cachep, page, i); + kasan_unpoison_object_data(cachep, objp); + cachep->ctor(objp); + kasan_poison_object_data(cachep, objp); + } + set_free_obj(page, i, i); } } @@ -2548,6 +2570,11 @@ static void *slab_get_obj(struct kmem_cache *cachep, struct page *page, WARN_ON(page_to_nid(virt_to_page(objp)) != nodeid); #endif +#if DEBUG + if (cachep->flags & SLAB_STORE_USER) + set_store_user_dirty(cachep); +#endif + return objp; } @@ -2564,8 +2591,8 @@ static void slab_put_obj(struct kmem_cache *cachep, struct page *page, /* Verify double free bug */ for (i = page->active; i < cachep->num; i++) { if (get_free_obj(page, i) == objnr) { - printk(KERN_ERR "slab: double free detected in cache " - "'%s', objp %p\n", cachep->name, objp); + printk(KERN_ERR "slab: double free detected in cache '%s', objp %p\n", + cachep->name, objp); BUG(); } } @@ -2650,6 +2677,7 @@ static int cache_grow(struct kmem_cache *cachep, slab_map_pages(cachep, page, freelist); + kasan_poison_slab(page); cache_init_objs(cachep, page); if (gfpflags_allow_blocking(local_flags)) @@ -2726,27 +2754,19 @@ static void *cache_free_debugcheck(struct kmem_cache *cachep, void *objp, *dbg_redzone1(cachep, objp) = RED_INACTIVE; *dbg_redzone2(cachep, objp) = RED_INACTIVE; } - if (cachep->flags & SLAB_STORE_USER) + if (cachep->flags & SLAB_STORE_USER) { + set_store_user_dirty(cachep); *dbg_userword(cachep, objp) = (void *)caller; + } objnr = obj_to_index(cachep, page, objp); BUG_ON(objnr >= cachep->num); BUG_ON(objp != index_to_obj(cachep, page, objnr)); - set_obj_status(page, objnr, OBJECT_FREE); if (cachep->flags & SLAB_POISON) { -#ifdef CONFIG_DEBUG_PAGEALLOC - if ((cachep->size % PAGE_SIZE)==0 && OFF_SLAB(cachep)) { - store_stackinfo(cachep, objp, caller); - kernel_map_pages(virt_to_page(objp), - cachep->size / PAGE_SIZE, 0); - } else { - poison_obj(cachep, objp, POISON_FREE); - } -#else poison_obj(cachep, objp, POISON_FREE); -#endif + slab_kernel_map(cachep, objp, 0, caller); } return objp; } @@ -2868,20 +2888,11 @@ static inline void cache_alloc_debugcheck_before(struct kmem_cache *cachep, static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep, gfp_t flags, void *objp, unsigned long caller) { - struct page *page; - if (!objp) return objp; if (cachep->flags & SLAB_POISON) { -#ifdef CONFIG_DEBUG_PAGEALLOC - if ((cachep->size % PAGE_SIZE) == 0 && OFF_SLAB(cachep)) - kernel_map_pages(virt_to_page(objp), - cachep->size / PAGE_SIZE, 1); - else - check_poison_obj(cachep, objp); -#else check_poison_obj(cachep, objp); -#endif + slab_kernel_map(cachep, objp, 1, 0); poison_obj(cachep, objp, POISON_INUSE); } if (cachep->flags & SLAB_STORE_USER) @@ -2890,8 +2901,7 @@ static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep, if (cachep->flags & SLAB_RED_ZONE) { if (*dbg_redzone1(cachep, objp) != RED_INACTIVE || *dbg_redzone2(cachep, objp) != RED_INACTIVE) { - slab_error(cachep, "double free, or memory outside" - " object was overwritten"); + slab_error(cachep, "double free, or memory outside object was overwritten"); printk(KERN_ERR "%p: redzone 1:0x%llx, redzone 2:0x%llx\n", objp, *dbg_redzone1(cachep, objp), @@ -2901,8 +2911,6 @@ static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep, *dbg_redzone2(cachep, objp) = RED_ACTIVE; } - page = virt_to_head_page(objp); - set_obj_status(page, obj_to_index(cachep, page, objp), OBJECT_ACTIVE); objp += obj_offset(cachep); if (cachep->ctor && cachep->flags & SLAB_POISON) cachep->ctor(objp); @@ -3366,6 +3374,16 @@ free_done: static inline void __cache_free(struct kmem_cache *cachep, void *objp, unsigned long caller) { + /* Put the object into the quarantine, don't touch it for now. */ + if (kasan_slab_free(cachep, objp)) + return; + + ___cache_free(cachep, objp, caller); +} + +void ___cache_free(struct kmem_cache *cachep, void *objp, + unsigned long caller) +{ struct array_cache *ac = cpu_cache_get(cachep); check_irq_off(); @@ -3406,6 +3424,7 @@ void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags) { void *ret = slab_alloc(cachep, flags, _RET_IP_); + kasan_slab_alloc(cachep, ret, flags); trace_kmem_cache_alloc(_RET_IP_, ret, cachep->object_size, cachep->size, flags); @@ -3434,6 +3453,7 @@ kmem_cache_alloc_trace(struct kmem_cache *cachep, gfp_t flags, size_t size) ret = slab_alloc(cachep, flags, _RET_IP_); + kasan_kmalloc(cachep, ret, size, flags); trace_kmalloc(_RET_IP_, ret, size, cachep->size, flags); return ret; @@ -3457,6 +3477,7 @@ void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid) { void *ret = slab_alloc_node(cachep, flags, nodeid, _RET_IP_); + kasan_slab_alloc(cachep, ret, flags); trace_kmem_cache_alloc_node(_RET_IP_, ret, cachep->object_size, cachep->size, flags, nodeid); @@ -3475,6 +3496,7 @@ void *kmem_cache_alloc_node_trace(struct kmem_cache *cachep, ret = slab_alloc_node(cachep, flags, nodeid, _RET_IP_); + kasan_kmalloc(cachep, ret, size, flags); trace_kmalloc_node(_RET_IP_, ret, size, cachep->size, flags, nodeid); @@ -3487,11 +3509,15 @@ static __always_inline void * __do_kmalloc_node(size_t size, gfp_t flags, int node, unsigned long caller) { struct kmem_cache *cachep; + void *ret; cachep = kmalloc_slab(size, flags); if (unlikely(ZERO_OR_NULL_PTR(cachep))) return cachep; - return kmem_cache_alloc_node_trace(cachep, flags, node, size); + ret = kmem_cache_alloc_node_trace(cachep, flags, node, size); + kasan_kmalloc(cachep, ret, size, flags); + + return ret; } void *__kmalloc_node(size_t size, gfp_t flags, int node) @@ -3525,6 +3551,7 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags, return cachep; ret = slab_alloc(cachep, flags, caller); + kasan_kmalloc(cachep, ret, size, flags); trace_kmalloc(caller, ret, size, cachep->size, flags); @@ -3998,8 +4025,7 @@ void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *cachep) unsigned long node_frees = cachep->node_frees; unsigned long overflows = cachep->node_overflow; - seq_printf(m, " : globalstat %7lu %6lu %5lu %4lu " - "%4lu %4lu %4lu %4lu %4lu", + seq_printf(m, " : globalstat %7lu %6lu %5lu %4lu %4lu %4lu %4lu %4lu %4lu", allocs, high, grown, reaped, errors, max_freeable, node_allocs, node_frees, overflows); @@ -4104,15 +4130,34 @@ static void handle_slab(unsigned long *n, struct kmem_cache *c, struct page *page) { void *p; - int i; + int i, j; + unsigned long v; if (n[0] == n[1]) return; for (i = 0, p = page->s_mem; i < c->num; i++, p += c->size) { - if (get_obj_status(page, i) != OBJECT_ACTIVE) + bool active = true; + + for (j = page->active; j < c->num; j++) { + if (get_free_obj(page, j) == i) { + active = false; + break; + } + } + + if (!active) + continue; + + /* + * probe_kernel_read() is used for DEBUG_PAGEALLOC. page table + * mapping is established when actual object allocation and + * we could mistakenly access the unmapped object in the cpu + * cache. + */ + if (probe_kernel_read(&v, dbg_userword(c, p), sizeof(v))) continue; - if (!add_caller(n, (unsigned long)*dbg_userword(c, p))) + if (!add_caller(n, v)) return; } } @@ -4148,21 +4193,31 @@ static int leaks_show(struct seq_file *m, void *p) if (!(cachep->flags & SLAB_RED_ZONE)) return 0; - /* OK, we can do it */ + /* + * Set store_user_clean and start to grab stored user information + * for all objects on this cache. If some alloc/free requests comes + * during the processing, information would be wrong so restart + * whole processing. + */ + do { + set_store_user_clean(cachep); + drain_cpu_caches(cachep); - x[1] = 0; + x[1] = 0; - for_each_kmem_cache_node(cachep, node, n) { + for_each_kmem_cache_node(cachep, node, n) { - check_irq_on(); - spin_lock_irq(&n->list_lock); + check_irq_on(); + spin_lock_irq(&n->list_lock); + + list_for_each_entry(page, &n->slabs_full, lru) + handle_slab(x, cachep, page); + list_for_each_entry(page, &n->slabs_partial, lru) + handle_slab(x, cachep, page); + spin_unlock_irq(&n->list_lock); + } + } while (!is_store_user_clean(cachep)); - list_for_each_entry(page, &n->slabs_full, lru) - handle_slab(x, cachep, page); - list_for_each_entry(page, &n->slabs_partial, lru) - handle_slab(x, cachep, page); - spin_unlock_irq(&n->list_lock); - } name = cachep->name; if (x[0] == x[1]) { /* Increase the buffer size */ @@ -4272,10 +4327,18 @@ const char *__check_heap_object(const void *ptr, unsigned long n, */ size_t ksize(const void *objp) { + size_t size; + BUG_ON(!objp); if (unlikely(objp == ZERO_SIZE_PTR)) return 0; - return virt_to_cache(objp)->object_size; + size = virt_to_cache(objp)->object_size; + /* We assume that ksize callers could use the whole allocated area, + * so we need to unpoison this area. + */ + kasan_krealloc(objp, size, GFP_NOWAIT); + + return size; } EXPORT_SYMBOL(ksize); diff --git a/mm/slab.h b/mm/slab.h index 7b6087197997..66118e967e04 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -371,4 +371,6 @@ void *slab_next(struct seq_file *m, void *p, loff_t *pos); void slab_stop(struct seq_file *m, void *p); int memcg_slab_show(struct seq_file *m, void *p); +void ___cache_free(struct kmem_cache *cache, void *x, unsigned long addr); + #endif /* MM_SLAB_H */ diff --git a/mm/slab_common.c b/mm/slab_common.c index 01e7246de8df..1577d113fac5 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -35,7 +35,7 @@ struct kmem_cache *kmem_cache; */ #define SLAB_NEVER_MERGE (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ SLAB_TRACE | SLAB_DESTROY_BY_RCU | SLAB_NOLEAKTRACE | \ - SLAB_FAILSLAB) + SLAB_FAILSLAB | SLAB_KASAN) #define SLAB_MERGE_SAME (SLAB_RECLAIM_ACCOUNT | SLAB_CACHE_DMA | SLAB_NOTRACK) @@ -453,6 +453,9 @@ EXPORT_SYMBOL(kmem_cache_create); static int shutdown_cache(struct kmem_cache *s, struct list_head *release, bool *need_rcu_barrier) { + /* free asan quarantined objects */ + kasan_cache_shutdown(s); + if (__kmem_cache_shutdown(s) != 0) return -EBUSY; @@ -723,8 +726,8 @@ void kmem_cache_destroy(struct kmem_cache *s) err = shutdown_cache(s, &release, &need_rcu_barrier); if (err) { - pr_err("kmem_cache_destroy %s: " - "Slab cache still has objects\n", s->name); + pr_err("kmem_cache_destroy %s: Slab cache still has objects\n", + s->name); dump_stack(); } out_unlock: @@ -750,6 +753,7 @@ int kmem_cache_shrink(struct kmem_cache *cachep) get_online_cpus(); get_online_mems(); + kasan_cache_shrink(cachep); ret = __kmem_cache_shrink(cachep, false); put_online_mems(); put_online_cpus(); @@ -1010,7 +1014,7 @@ void *kmalloc_order(size_t size, gfp_t flags, unsigned int order) page = alloc_kmem_pages(flags, order); ret = page ? page_address(page) : NULL; kmemleak_alloc(ret, size, 1, flags); - kasan_kmalloc_large(ret, size); + kasan_kmalloc_large(ret, size, flags); return ret; } EXPORT_SYMBOL(kmalloc_order); @@ -1044,13 +1048,11 @@ static void print_slabinfo_header(struct seq_file *m) #else seq_puts(m, "slabinfo - version: 2.1\n"); #endif - seq_puts(m, "# name <active_objs> <num_objs> <objsize> " - "<objperslab> <pagesperslab>"); + seq_puts(m, "# name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab>"); seq_puts(m, " : tunables <limit> <batchcount> <sharedfactor>"); seq_puts(m, " : slabdata <active_slabs> <num_slabs> <sharedavail>"); #ifdef CONFIG_DEBUG_SLAB - seq_puts(m, " : globalstat <listallocs> <maxobjs> <grown> <reaped> " - "<error> <maxfreeable> <nodeallocs> <remotefrees> <alienoverflow>"); + seq_puts(m, " : globalstat <listallocs> <maxobjs> <grown> <reaped> <error> <maxfreeable> <nodeallocs> <remotefrees> <alienoverflow>"); seq_puts(m, " : cpustat <allochit> <allocmiss> <freehit> <freemiss>"); #endif seq_putc(m, '\n'); @@ -1191,7 +1193,7 @@ static __always_inline void *__do_krealloc(const void *p, size_t new_size, ks = ksize(p); if (ks >= new_size) { - kasan_krealloc((void *)p, new_size); + kasan_krealloc((void *)p, new_size, flags); return (void *)p; } diff --git a/mm/slub.c b/mm/slub.c index a5f6c6d107e9..fd3a044aaa4a 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -287,6 +287,9 @@ static inline size_t slab_ksize(const struct kmem_cache *s) return s->object_size; #endif + if (s->flags & SLAB_KASAN) + return s->object_size; + /* * If we have the need to store the freelist pointer * back there or track user information then we can @@ -469,8 +472,6 @@ static inline void *restore_red_left(struct kmem_cache *s, void *p) */ #if defined(CONFIG_SLUB_DEBUG_ON) static int slub_debug = DEBUG_DEFAULT_FLAGS; -#elif defined(CONFIG_KASAN) -static int slub_debug = SLAB_STORE_USER; #else static int slub_debug; #endif @@ -675,6 +676,8 @@ static void print_trailer(struct kmem_cache *s, struct page *page, u8 *p) if (s->flags & SLAB_STORE_USER) off += 2 * sizeof(struct track); + off += kasan_metadata_size(s); + if (off != size_from_object(s)) /* Beginning of the filler is the free pointer */ print_section("Padding ", p + off, size_from_object(s) - off); @@ -814,6 +817,8 @@ static int check_pad_bytes(struct kmem_cache *s, struct page *page, u8 *p) /* We also have user information there */ off += 2 * sizeof(struct track); + off += kasan_metadata_size(s); + if (size_from_object(s) == off) return 1; @@ -977,14 +982,14 @@ static int on_freelist(struct kmem_cache *s, struct page *page, void *search) max_objects = MAX_OBJS_PER_PAGE; if (page->objects != max_objects) { - slab_err(s, page, "Wrong number of objects. Found %d but " - "should be %d", page->objects, max_objects); + slab_err(s, page, "Wrong number of objects. Found %d but should be %d", + page->objects, max_objects); page->objects = max_objects; slab_fix(s, "Number of objects adjusted."); } if (page->inuse != page->objects - nr) { - slab_err(s, page, "Wrong object count. Counter is %d but " - "counted were %d", page->inuse, page->objects - nr); + slab_err(s, page, "Wrong object count. Counter is %d but counted were %d", + page->inuse, page->objects - nr); page->inuse = page->objects - nr; slab_fix(s, "Object count adjusted."); } @@ -1148,8 +1153,8 @@ next_object: if (unlikely(s != page->slab_cache)) { if (!PageSlab(page)) { - slab_err(s, page, "Attempt to free object(0x%p) " - "outside of slab", object); + slab_err(s, page, "Attempt to free object(0x%p) outside of slab", + object); } else if (!page->slab_cache) { pr_err("SLUB <none>: no slab for object 0x%p.\n", object); @@ -1319,7 +1324,7 @@ static inline void dec_slabs_node(struct kmem_cache *s, int node, static inline void kmalloc_large_node_hook(void *ptr, size_t size, gfp_t flags) { kmemleak_alloc(ptr, size, 1, flags); - kasan_kmalloc_large(ptr, size); + kasan_kmalloc_large(ptr, size, flags); } static inline void kfree_hook(const void *x) @@ -1353,13 +1358,15 @@ static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags, kmemcheck_slab_alloc(s, flags, object, slab_ksize(s)); kmemleak_alloc_recursive(object, s->object_size, 1, s->flags, flags); - kasan_slab_alloc(s, object); + kasan_slab_alloc(s, object, flags); } memcg_kmem_put_cache(s); } -static inline void slab_free_hook(struct kmem_cache *s, void *x) +static inline void *slab_free_hook(struct kmem_cache *s, void *x) { + void *freeptr; + kmemleak_free_recursive(x, s->flags); /* @@ -1380,7 +1387,13 @@ static inline void slab_free_hook(struct kmem_cache *s, void *x) if (!(s->flags & SLAB_DEBUG_OBJECTS)) debug_check_no_obj_freed(x, s->object_size); + freeptr = get_freepointer(s, x); + /* + * kasan_slab_free() may put x into memory quarantine, delaying its + * reuse. In this case the object's freelist pointer is changed. + */ kasan_slab_free(s, x); + return freeptr; } static inline void slab_free_freelist_hook(struct kmem_cache *s, @@ -1398,11 +1411,11 @@ static inline void slab_free_freelist_hook(struct kmem_cache *s, void *object = head; void *tail_obj = tail ? : head; + void *freeptr; do { - slab_free_hook(s, object); - } while ((object != tail_obj) && - (object = get_freepointer(s, object))); + freeptr = slab_free_hook(s, object); + } while ((object != tail_obj) && (object = freeptr)); #endif } @@ -1410,6 +1423,7 @@ static void setup_object(struct kmem_cache *s, struct page *page, void *object) { setup_object_debug(s, page, object); + kasan_init_slab_obj(s, object); if (unlikely(s->ctor)) { kasan_unpoison_object_data(s, object); s->ctor(object); @@ -2638,7 +2652,7 @@ void *kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size) { void *ret = slab_alloc(s, gfpflags, _RET_IP_); trace_kmalloc(_RET_IP_, ret, size, s->size, gfpflags); - kasan_kmalloc(s, ret, size); + kasan_kmalloc(s, ret, size, gfpflags); return ret; } EXPORT_SYMBOL(kmem_cache_alloc_trace); @@ -2666,7 +2680,7 @@ void *kmem_cache_alloc_node_trace(struct kmem_cache *s, trace_kmalloc_node(_RET_IP_, ret, size, s->size, gfpflags, node); - kasan_kmalloc(s, ret, size); + kasan_kmalloc(s, ret, size, gfpflags); return ret; } EXPORT_SYMBOL(kmem_cache_alloc_node_trace); @@ -2811,16 +2825,13 @@ slab_empty: * same page) possible by specifying head and tail ptr, plus objects * count (cnt). Bulk free indicated by tail pointer being set. */ -static __always_inline void slab_free(struct kmem_cache *s, struct page *page, - void *head, void *tail, int cnt, - unsigned long addr) +static __always_inline void do_slab_free(struct kmem_cache *s, + struct page *page, void *head, void *tail, + int cnt, unsigned long addr) { void *tail_obj = tail ? : head; struct kmem_cache_cpu *c; unsigned long tid; - - slab_free_freelist_hook(s, head, tail); - redo: /* * Determine the currently cpus per cpu slab. @@ -2854,6 +2865,27 @@ redo: } +static __always_inline void slab_free(struct kmem_cache *s, struct page *page, + void *head, void *tail, int cnt, + unsigned long addr) +{ + slab_free_freelist_hook(s, head, tail); + /* + * slab_free_freelist_hook() could have put the items into quarantine. + * If so, no need to free them. + */ + if (s->flags & SLAB_KASAN && !(s->flags & SLAB_DESTROY_BY_RCU)) + return; + do_slab_free(s, page, head, tail, cnt, addr); +} + +#ifdef CONFIG_KASAN +void ___cache_free(struct kmem_cache *cache, void *x, unsigned long addr) +{ + do_slab_free(cache, virt_to_head_page(x), x, NULL, 1, addr); +} +#endif + void kmem_cache_free(struct kmem_cache *s, void *x) { s = cache_from_obj(s, x); @@ -3210,7 +3242,8 @@ static void early_kmem_cache_node_alloc(int node) init_object(kmem_cache_node, n, SLUB_RED_ACTIVE); init_tracking(kmem_cache_node, n); #endif - kasan_kmalloc(kmem_cache_node, n, sizeof(struct kmem_cache_node)); + kasan_kmalloc(kmem_cache_node, n, sizeof(struct kmem_cache_node), + GFP_KERNEL); init_kmem_cache_node(n); inc_slabs_node(kmem_cache_node, node, page->objects); @@ -3273,7 +3306,7 @@ static void set_min_partial(struct kmem_cache *s, unsigned long min) static int calculate_sizes(struct kmem_cache *s, int forced_order) { unsigned long flags = s->flags; - unsigned long size = s->object_size; + size_t size = s->object_size; int order; /* @@ -3332,7 +3365,10 @@ static int calculate_sizes(struct kmem_cache *s, int forced_order) * the object. */ size += 2 * sizeof(struct track); +#endif + kasan_cache_create(s, &size, &s->flags); +#ifdef CONFIG_SLUB_DEBUG if (flags & SLAB_RED_ZONE) { /* * Add some empty padding so that we can catch @@ -3461,10 +3497,9 @@ static int kmem_cache_open(struct kmem_cache *s, unsigned long flags) free_kmem_cache_nodes(s); error: if (flags & SLAB_PANIC) - panic("Cannot create slab %s size=%lu realsize=%u " - "order=%u offset=%u flags=%lx\n", - s->name, (unsigned long)s->size, s->size, - oo_order(s->oo), s->offset, flags); + panic("Cannot create slab %s size=%lu realsize=%u order=%u offset=%u flags=%lx\n", + s->name, (unsigned long)s->size, s->size, + oo_order(s->oo), s->offset, flags); return -EINVAL; } @@ -3588,7 +3623,7 @@ void *__kmalloc(size_t size, gfp_t flags) trace_kmalloc(_RET_IP_, ret, size, s->size, flags); - kasan_kmalloc(s, ret, size); + kasan_kmalloc(s, ret, size, flags); return ret; } @@ -3633,7 +3668,7 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node) trace_kmalloc_node(_RET_IP_, ret, size, s->size, flags, node); - kasan_kmalloc(s, ret, size); + kasan_kmalloc(s, ret, size, flags); return ret; } @@ -3702,7 +3737,7 @@ size_t ksize(const void *object) size_t size = __ksize(object); /* We assume that ksize callers could use whole allocated area, so we need unpoison this area. */ - kasan_krealloc(object, size); + kasan_krealloc(object, size, GFP_NOWAIT); return size; } EXPORT_SYMBOL(ksize); diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c index 4cba9c2783a1..c22065e02084 100644 --- a/mm/sparse-vmemmap.c +++ b/mm/sparse-vmemmap.c @@ -94,8 +94,8 @@ void __meminit vmemmap_verify(pte_t *pte, int node, int actual_node = early_pfn_to_nid(pfn); if (node_distance(actual_node, node) > LOCAL_DISTANCE) - printk(KERN_WARNING "[%lx-%lx] potential offnode " - "page_structs\n", start, end - 1); + printk(KERN_WARNING "[%lx-%lx] potential offnode page_structs\n", + start, end - 1); } pte_t * __meminit vmemmap_pte_populate(pmd_t *pmd, unsigned long addr, int node) @@ -220,8 +220,8 @@ void __init sparse_mem_maps_populate_node(struct page **map_map, if (map_map[pnum]) continue; ms = __nr_to_section(pnum); - printk(KERN_ERR "%s: sparsemem memory map backing failed " - "some memory will not be available.\n", __func__); + printk(KERN_ERR "%s: sparsemem memory map backing failed some memory will not be available.\n", + __func__); ms->section_mem_map = 0; } diff --git a/mm/sparse.c b/mm/sparse.c index d1b48b691ac8..1b7543a775a4 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -428,8 +428,8 @@ void __init sparse_mem_maps_populate_node(struct page **map_map, if (map_map[pnum]) continue; ms = __nr_to_section(pnum); - printk(KERN_ERR "%s: sparsemem memory map backing failed " - "some memory will not be available.\n", __func__); + printk(KERN_ERR "%s: sparsemem memory map backing failed some memory will not be available.\n", + __func__); ms->section_mem_map = 0; } } @@ -456,8 +456,8 @@ static struct page __init *sparse_early_mem_map_alloc(unsigned long pnum) if (map) return map; - printk(KERN_ERR "%s: sparsemem memory map backing failed " - "some memory will not be available.\n", __func__); + printk(KERN_ERR "%s: sparsemem memory map backing failed some memory will not be available.\n", + __func__); ms->section_mem_map = 0; return NULL; } diff --git a/mm/swapfile.c b/mm/swapfile.c index 45656508512b..fca04a53cf78 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -2590,8 +2590,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) } enable_swap_info(p, prio, swap_map, cluster_info, frontswap_map); - pr_info("Adding %uk swap on %s. " - "Priority:%d extents:%d across:%lluk %s%s%s%s%s\n", + pr_info("Adding %uk swap on %s. Priority:%d extents:%d across:%lluk %s%s%s%s%s\n", p->pages<<(PAGE_SHIFT-10), name->name, p->prio, nr_extents, (unsigned long long)span<<(PAGE_SHIFT-10), (p->flags & SWP_SOLIDSTATE) ? "SS" : "", diff --git a/mm/vmalloc.c b/mm/vmalloc.c index b24be2a7f456..32e83c8bd087 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -522,8 +522,8 @@ overflow: goto retry; } if (printk_ratelimit()) - pr_warn("vmap allocation for size %lu failed: " - "use vmalloc=<size> to increase size.\n", size); + pr_warn("vmap allocation for size %lu failed: use vmalloc=<size> to increase size\n", + size); kfree(va); return ERR_PTR(-EBUSY); } diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 461ca926fd39..6a20195a3a2a 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -158,6 +158,10 @@ static unsigned int ipv4_conntrack_local(void *priv, if (skb->len < sizeof(struct iphdr) || ip_hdrlen(skb) < sizeof(struct iphdr)) return NF_ACCEPT; + + if (ip_is_fragment(ip_hdr(skb))) /* IP_NODEFRAG setsockopt set */ + return NF_ACCEPT; + return nf_conntrack_in(state->net, PF_INET, state->hook, skb); } diff --git a/net/ipv4/netfilter/nf_nat_l3proto_ipv4.c b/net/ipv4/netfilter/nf_nat_l3proto_ipv4.c index 5075b7ecd26d..98a56077f604 100644 --- a/net/ipv4/netfilter/nf_nat_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_nat_l3proto_ipv4.c @@ -268,11 +268,6 @@ nf_nat_ipv4_fn(void *priv, struct sk_buff *skb, /* maniptype == SRC for postrouting. */ enum nf_nat_manip_type maniptype = HOOK2MANIP(state->hook); - /* We never see fragments: conntrack defrags on pre-routing - * and local-out, and nf_nat_out protects post-routing. - */ - NF_CT_ASSERT(!ip_is_fragment(ip_hdr(skb))); - ct = nf_ct_get(skb, &ctinfo); /* Can't track? It's not due to stress, or conntrack would * have dropped it. Hence it's the user's responsibilty to diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 5bdc0caa7f4c..e1a5e582ec48 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -627,9 +627,12 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw, struct fnhe_hash_bucket *hash; struct fib_nh_exception *fnhe; struct rtable *rt; + u32 genid, hval; unsigned int i; int depth; - u32 hval = fnhe_hashfun(daddr); + + genid = fnhe_genid(dev_net(nh->nh_dev)); + hval = fnhe_hashfun(daddr); spin_lock_bh(&fnhe_lock); @@ -652,12 +655,13 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw, } if (fnhe) { + if (fnhe->fnhe_genid != genid) + fnhe->fnhe_genid = genid; if (gw) fnhe->fnhe_gw = gw; - if (pmtu) { + if (pmtu) fnhe->fnhe_pmtu = pmtu; - fnhe->fnhe_expires = max(1UL, expires); - } + fnhe->fnhe_expires = max(1UL, expires); /* Update all cached dsts too */ rt = rcu_dereference(fnhe->fnhe_rth_input); if (rt) @@ -676,7 +680,7 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw, fnhe->fnhe_next = hash->chain; rcu_assign_pointer(hash->chain, fnhe); } - fnhe->fnhe_genid = fnhe_genid(dev_net(nh->nh_dev)); + fnhe->fnhe_genid = genid; fnhe->fnhe_daddr = daddr; fnhe->fnhe_gw = gw; fnhe->fnhe_pmtu = pmtu; diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 1604163c2850..7ad3f4a52b67 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -910,12 +910,12 @@ static int __init inet6_init(void) err = register_pernet_subsys(&inet6_net_ops); if (err) goto register_pernet_fail; - err = icmpv6_init(); - if (err) - goto icmp_fail; err = ip6_mr_init(); if (err) goto ipmr_fail; + err = icmpv6_init(); + if (err) + goto icmp_fail; err = ndisc_init(); if (err) goto ndisc_fail; @@ -1033,10 +1033,10 @@ igmp_fail: ndisc_cleanup(); ndisc_fail: ip6_mr_cleanup(); -ipmr_fail: - icmpv6_cleanup(); icmp_fail: unregister_pernet_subsys(&inet6_net_ops); +ipmr_fail: + icmpv6_cleanup(); register_pernet_fail: sock_unregister(PF_INET6); rtnl_unregister_all(PF_INET6); diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c index 1831fb108ad1..06db53f82f6e 100644 --- a/net/ipv6/ip6_vti.c +++ b/net/ipv6/ip6_vti.c @@ -474,11 +474,15 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl) if (!skb->ignore_df && skb->len > mtu) { skb_dst(skb)->ops->update_pmtu(dst, NULL, skb, mtu); - if (skb->protocol == htons(ETH_P_IPV6)) + if (skb->protocol == htons(ETH_P_IPV6)) { + if (mtu < IPV6_MIN_MTU) + mtu = IPV6_MIN_MTU; + icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); - else + } else { icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu)); + } return -EMSGSIZE; } diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 184f0fe35dc6..b7ea5eaa4fd1 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -1093,6 +1093,7 @@ static void ipip6_tunnel_update(struct ip_tunnel *t, struct ip_tunnel_parm *p) ipip6_tunnel_link(sitn, t); t->parms.iph.ttl = p->iph.ttl; t->parms.iph.tos = p->iph.tos; + t->parms.iph.frag_off = p->iph.frag_off; if (t->parms.link != p->link) { t->parms.link = p->link; ipip6_tunnel_bind_dev(t->dev); diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 1584f89c456a..92ca3e106c2b 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -1665,7 +1665,6 @@ static int fanout_add(struct sock *sk, u16 id, u16 type_flags) atomic_long_set(&rollover->num, 0); atomic_long_set(&rollover->num_huge, 0); atomic_long_set(&rollover->num_failed, 0); - po->rollover = rollover; } match = NULL; @@ -1710,6 +1709,8 @@ static int fanout_add(struct sock *sk, u16 id, u16 type_flags) if (atomic_read(&match->sk_ref) < PACKET_FANOUT_MAX) { __dev_remove_pack(&po->prot_hook); po->fanout = match; + po->rollover = rollover; + rollover = NULL; atomic_inc(&match->sk_ref); __fanout_link(sk, po); err = 0; @@ -1723,10 +1724,7 @@ static int fanout_add(struct sock *sk, u16 id, u16 type_flags) } out: - if (err && rollover) { - kfree_rcu(rollover, rcu); - po->rollover = NULL; - } + kfree(rollover); mutex_unlock(&fanout_mutex); return err; } @@ -1750,11 +1748,6 @@ static struct packet_fanout *fanout_release(struct sock *sk) list_del(&f->list); else f = NULL; - - if (po->rollover) { - kfree_rcu(po->rollover, rcu); - po->rollover = NULL; - } } mutex_unlock(&fanout_mutex); @@ -2914,6 +2907,7 @@ static int packet_release(struct socket *sock) synchronize_net(); if (f) { + kfree(po->rollover); fanout_release_data(f); kfree(f); } @@ -2982,6 +2976,10 @@ static int packet_do_bind(struct sock *sk, const char *name, int ifindex, if (need_rehook) { if (po->running) { rcu_read_unlock(); + /* prevents packet_notifier() from calling + * register_prot_hook() + */ + po->num = 0; __unregister_prot_hook(sk, true); rcu_read_lock(); dev_curr = po->prot_hook.dev; @@ -2990,6 +2988,7 @@ static int packet_do_bind(struct sock *sk, const char *name, int ifindex, dev->ifindex); } + BUG_ON(po->running); po->num = proto; po->prot_hook.type = proto; @@ -3771,7 +3770,6 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, void *data = &val; union tpacket_stats_u st; struct tpacket_rollover_stats rstats; - struct packet_rollover *rollover; if (level != SOL_PACKET) return -ENOPROTOOPT; @@ -3850,18 +3848,13 @@ static int packet_getsockopt(struct socket *sock, int level, int optname, 0); break; case PACKET_ROLLOVER_STATS: - rcu_read_lock(); - rollover = rcu_dereference(po->rollover); - if (rollover) { - rstats.tp_all = atomic_long_read(&rollover->num); - rstats.tp_huge = atomic_long_read(&rollover->num_huge); - rstats.tp_failed = atomic_long_read(&rollover->num_failed); - data = &rstats; - lv = sizeof(rstats); - } - rcu_read_unlock(); - if (!rollover) + if (!po->rollover) return -EINVAL; + rstats.tp_all = atomic_long_read(&po->rollover->num); + rstats.tp_huge = atomic_long_read(&po->rollover->num_huge); + rstats.tp_failed = atomic_long_read(&po->rollover->num_failed); + data = &rstats; + lv = sizeof(rstats); break; case PACKET_TX_HAS_OFF: val = po->tp_tx_has_off; diff --git a/net/packet/internal.h b/net/packet/internal.h index 9ee46314b7d7..d55bfc34d6b3 100644 --- a/net/packet/internal.h +++ b/net/packet/internal.h @@ -92,7 +92,6 @@ struct packet_fanout { struct packet_rollover { int sock; - struct rcu_head rcu; atomic_long_t num; atomic_long_t num_huge; atomic_long_t num_failed; diff --git a/net/rds/rdma.c b/net/rds/rdma.c index 8d3a851a3476..bdf151c6307d 100644 --- a/net/rds/rdma.c +++ b/net/rds/rdma.c @@ -184,7 +184,7 @@ static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args, long i; int ret; - if (rs->rs_bound_addr == 0) { + if (rs->rs_bound_addr == 0 || !rs->rs_transport) { ret = -ENOTCONN; /* XXX not a great errno */ goto out; } diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 7f0f689b8d2b..61189c576963 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -82,8 +82,8 @@ /* Forward declarations for internal helper functions. */ static int sctp_writeable(struct sock *sk); static void sctp_wfree(struct sk_buff *skb); -static int sctp_wait_for_sndbuf(struct sctp_association *, long *timeo_p, - size_t msg_len); +static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p, + size_t msg_len, struct sock **orig_sk); static int sctp_wait_for_packet(struct sock *sk, int *err, long *timeo_p); static int sctp_wait_for_connect(struct sctp_association *, long *timeo_p); static int sctp_wait_for_accept(struct sock *sk, long timeo); @@ -1953,9 +1953,16 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len) timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT); if (!sctp_wspace(asoc)) { - err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len); - if (err) + /* sk can be changed by peel off when waiting for buf. */ + err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len, &sk); + if (err) { + if (err == -ESRCH) { + /* asoc is already dead. */ + new_asoc = NULL; + err = -EPIPE; + } goto out_free; + } } /* If an address is passed with the sendto/sendmsg call, it is used @@ -4460,12 +4467,6 @@ int sctp_do_peeloff(struct sock *sk, sctp_assoc_t id, struct socket **sockp) if (!asoc) return -EINVAL; - /* If there is a thread waiting on more sndbuf space for - * sending on this asoc, it cannot be peeled. - */ - if (waitqueue_active(&asoc->wait)) - return -EBUSY; - /* An association cannot be branched off from an already peeled-off * socket, nor is this supported for tcp style sockets. */ @@ -6975,7 +6976,7 @@ void sctp_sock_rfree(struct sk_buff *skb) /* Helper function to wait for space in the sndbuf. */ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p, - size_t msg_len) + size_t msg_len, struct sock **orig_sk) { struct sock *sk = asoc->base.sk; int err = 0; @@ -6992,10 +6993,11 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p, for (;;) { prepare_to_wait_exclusive(&asoc->wait, &wait, TASK_INTERRUPTIBLE); + if (asoc->base.dead) + goto do_dead; if (!*timeo_p) goto do_nonblock; - if (sk->sk_err || asoc->state >= SCTP_STATE_SHUTDOWN_PENDING || - asoc->base.dead) + if (sk->sk_err || asoc->state >= SCTP_STATE_SHUTDOWN_PENDING) goto do_error; if (signal_pending(current)) goto do_interrupted; @@ -7008,11 +7010,17 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p, release_sock(sk); current_timeo = schedule_timeout(current_timeo); lock_sock(sk); + if (sk != asoc->base.sk) { + release_sock(sk); + sk = asoc->base.sk; + lock_sock(sk); + } *timeo_p = current_timeo; } out: + *orig_sk = sk; finish_wait(&asoc->wait, &wait); /* Release the association's refcnt. */ @@ -7020,6 +7028,10 @@ out: return err; +do_dead: + err = -ESRCH; + goto out; + do_error: err = -EPIPE; goto out; diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 73ad57a59989..1cb35c753dcd 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -273,10 +273,9 @@ static inline void rpc_task_set_debuginfo(struct rpc_task *task) static void rpc_set_active(struct rpc_task *task) { - trace_rpc_task_begin(task->tk_client, task, NULL); - rpc_task_set_debuginfo(task); set_bit(RPC_TASK_ACTIVE, &task->tk_runstate); + trace_rpc_task_begin(task->tk_client, task, NULL); } /* diff --git a/net/tipc/server.c b/net/tipc/server.c index c416e5184a3f..f351863076c2 100644 --- a/net/tipc/server.c +++ b/net/tipc/server.c @@ -311,6 +311,7 @@ static int tipc_accept_from_sock(struct tipc_conn *con) newcon->usr_data = s->tipc_conn_new(newcon->conid); if (!newcon->usr_data) { sock_release(newsock); + conn_put(newcon); return -ENOMEM; } diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 5b3e5f54c79e..54ea796518dc 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -1361,6 +1361,7 @@ static struct xfrm_policy *clone_policy(const struct xfrm_policy *old, int dir) newp->xfrm_nr = old->xfrm_nr; newp->index = old->index; newp->type = old->type; + newp->family = old->family; memcpy(newp->xfrm_vec, old->xfrm_vec, newp->xfrm_nr*sizeof(struct xfrm_tmpl)); write_lock_bh(&net->xfrm.xfrm_policy_lock); diff --git a/scripts/module-common.lds b/scripts/module-common.lds index 73a2c7da0e55..53234e85192a 100644 --- a/scripts/module-common.lds +++ b/scripts/module-common.lds @@ -19,4 +19,6 @@ SECTIONS { . = ALIGN(8); .init_array 0 : { *(SORT(.init_array.*)) *(.init_array) } + + __jump_table 0 : ALIGN(8) { KEEP(*(__jump_table)) } } diff --git a/scripts/package/Makefile b/scripts/package/Makefile index 493e226356ca..52917fb8e0c5 100644 --- a/scripts/package/Makefile +++ b/scripts/package/Makefile @@ -39,10 +39,9 @@ if test "$(objtree)" != "$(srctree)"; then \ false; \ fi ; \ $(srctree)/scripts/setlocalversion --save-scmversion; \ -ln -sf $(srctree) $(2); \ tar -cz $(RCS_TAR_IGNORE) -f $(2).tar.gz \ - $(addprefix $(2)/,$(TAR_CONTENT) $(3)); \ -rm -f $(2) $(objtree)/.scmversion + --transform 's:^:$(2)/:S' $(TAR_CONTENT) $(3); \ +rm -f $(objtree)/.scmversion # rpm-pkg # --------------------------------------------------------------------------- diff --git a/sound/core/pcm.c b/sound/core/pcm.c index a2c2f06060df..ab73cec0f365 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -149,7 +149,9 @@ static int snd_pcm_control_ioctl(struct snd_card *card, err = -ENXIO; goto _error; } + mutex_lock(&pcm->open_mutex); err = snd_pcm_info_user(substream, info); + mutex_unlock(&pcm->open_mutex); _error: mutex_unlock(®ister_mutex); return err; diff --git a/sound/core/seq/seq_timer.c b/sound/core/seq/seq_timer.c index 293104926098..3be67560ead5 100644 --- a/sound/core/seq/seq_timer.c +++ b/sound/core/seq/seq_timer.c @@ -355,7 +355,7 @@ static int initialize_timer(struct snd_seq_timer *tmr) unsigned long freq; t = tmr->timeri->timer; - if (snd_BUG_ON(!t)) + if (!t) return -EINVAL; freq = tmr->preferred_resolution; diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 9d864648c901..0c771e72e62f 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -215,6 +215,11 @@ static int snd_usb_copy_string_desc(struct mixer_build *state, int index, char *buf, int maxlen) { int len = usb_string(state->chip->dev, index, buf, maxlen - 1); + + if (len < 0) + return 0; + + buf[len] = 0; return len; } @@ -2365,13 +2370,14 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, if (len) ; else if (nameid) - snd_usb_copy_string_desc(state, nameid, kctl->id.name, + len = snd_usb_copy_string_desc(state, nameid, kctl->id.name, sizeof(kctl->id.name)); - else { + else len = get_term_name(state, &state->oterm, kctl->id.name, sizeof(kctl->id.name), 0); - if (!len) - strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); + + if (!len) { + strlcpy(kctl->id.name, "USB", sizeof(kctl->id.name)); if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) append_ctl_name(kctl, " Clock Source"); diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index bc7adb84e679..60a94b3e532e 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -193,11 +193,14 @@ static void kvp_update_mem_state(int pool) for (;;) { readp = &record[records_read]; records_read += fread(readp, sizeof(struct kvp_record), - ENTRIES_PER_BLOCK * num_blocks, - filep); + ENTRIES_PER_BLOCK * num_blocks - records_read, + filep); if (ferror(filep)) { - syslog(LOG_ERR, "Failed to read file, pool: %d", pool); + syslog(LOG_ERR, + "Failed to read file, pool: %d; error: %d %s", + pool, errno, strerror(errno)); + kvp_release_lock(pool); exit(EXIT_FAILURE); } @@ -210,6 +213,7 @@ static void kvp_update_mem_state(int pool) if (record == NULL) { syslog(LOG_ERR, "malloc failed"); + kvp_release_lock(pool); exit(EXIT_FAILURE); } continue; @@ -224,15 +228,11 @@ static void kvp_update_mem_state(int pool) fclose(filep); kvp_release_lock(pool); } + static int kvp_file_init(void) { int fd; - FILE *filep; - size_t records_read; char *fname; - struct kvp_record *record; - struct kvp_record *readp; - int num_blocks; int i; int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; @@ -246,61 +246,19 @@ static int kvp_file_init(void) for (i = 0; i < KVP_POOL_COUNT; i++) { fname = kvp_file_info[i].fname; - records_read = 0; - num_blocks = 1; sprintf(fname, "%s/.kvp_pool_%d", KVP_CONFIG_LOC, i); fd = open(fname, O_RDWR | O_CREAT | O_CLOEXEC, 0644 /* rw-r--r-- */); if (fd == -1) return 1; - - filep = fopen(fname, "re"); - if (!filep) { - close(fd); - return 1; - } - - record = malloc(alloc_unit * num_blocks); - if (record == NULL) { - fclose(filep); - close(fd); - return 1; - } - for (;;) { - readp = &record[records_read]; - records_read += fread(readp, sizeof(struct kvp_record), - ENTRIES_PER_BLOCK, - filep); - - if (ferror(filep)) { - syslog(LOG_ERR, "Failed to read file, pool: %d", - i); - exit(EXIT_FAILURE); - } - - if (!feof(filep)) { - /* - * We have more data to read. - */ - num_blocks++; - record = realloc(record, alloc_unit * - num_blocks); - if (record == NULL) { - fclose(filep); - close(fd); - return 1; - } - continue; - } - break; - } kvp_file_info[i].fd = fd; - kvp_file_info[i].num_blocks = num_blocks; - kvp_file_info[i].records = record; - kvp_file_info[i].num_records = records_read; - fclose(filep); - + kvp_file_info[i].num_blocks = 1; + kvp_file_info[i].records = malloc(alloc_unit); + if (kvp_file_info[i].records == NULL) + return 1; + kvp_file_info[i].num_records = 0; + kvp_update_mem_state(i); } return 0; diff --git a/tools/testing/selftests/powerpc/harness.c b/tools/testing/selftests/powerpc/harness.c index f7997affd143..f45cee80c58b 100644 --- a/tools/testing/selftests/powerpc/harness.c +++ b/tools/testing/selftests/powerpc/harness.c @@ -109,9 +109,11 @@ int test_harness(int (test_function)(void), char *name) rc = run_test(test_function, name); - if (rc == MAGIC_SKIP_RETURN_VALUE) + if (rc == MAGIC_SKIP_RETURN_VALUE) { test_skip(name); - else + /* so that skipped test is not marked as failed */ + rc = 0; + } else test_finish(name, rc); return rc; |