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* refs/heads/tmp-66a37fc
Linux 4.4.168
selftests: Move networking/timestamping from Documentation
rocker: fix rocker_tlv_put_* functions for KASAN
staging: speakup: Replace strncpy with memcpy
matroxfb: fix size of memcpy
media: dvb-frontends: fix i2c access helpers for KASAN
proc: do not access cmdline nor environ from file-backed areas
proc: don't use FOLL_FORCE for reading cmdline and environment
mm: replace access_remote_vm() write parameter with gup_flags
mm: replace __access_remote_vm() write parameter with gup_flags
mm: replace get_user_pages() write/force parameters with gup_flags
mm: replace get_vaddr_frames() write/force parameters with gup_flags
mm: replace get_user_pages_locked() write/force parameters with gup_flags
mm: replace get_user_pages_unlocked() write/force parameters with gup_flags
mm/nommu.c: Switch __get_user_pages_unlocked() to use __get_user_pages()
mm: remove write/force parameters from __get_user_pages_unlocked()
mm: remove write/force parameters from __get_user_pages_locked()
sr: pass down correctly sized SCSI sense buffer
swiotlb: clean up reporting
hugetlbfs: fix bug in pgoff overflow checking
hugetlbfs: check for pgoff value overflow
hugetlbfs: fix offset overflow in hugetlbfs mmap
mm/hugetlb.c: don't call region_abort if region_chg fails
posix-timers: Sanitize overrun handling
wil6210: missing length check in wmi_set_ie
bpf: Prevent memory disambiguation attack
bpf/verifier: Pass instruction index to check_mem_access() and check_xadd()
bpf/verifier: Add spi variable to check_stack_write()
bpf: support 8-byte metafield access
KVM: SVM: Implement VIRT_SPEC_CTRL support for SSBD
x86/speculation: Use synthetic bits for IBRS/IBPB/STIBP
x86/bugs, KVM: Extend speculation control for VIRT_SPEC_CTRL
KVM: SVM: Move spec control call after restore of GS
x86/KVM/VMX: Expose SPEC_CTRL Bit(2) to the guest
x86/bugs, KVM: Support the combination of guest and host IBRS
x86/uaccess: Use __uaccess_begin_nospec() and uaccess_try_nospec
x86/usercopy: Replace open coded stac/clac with __uaccess_{begin, end}
x86: Introduce __uaccess_begin_nospec() and uaccess_try_nospec
x86: fix SMAP in 32-bit environments
x86: reorganize SMAP handling in user space accesses
KVM/x86: Remove indirect MSR op calls from SPEC_CTRL
KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL
KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL
KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES
KVM/x86: Add IBPB support
KVM: VMX: make MSR bitmaps per-VCPU
KVM: VMX: introduce alloc_loaded_vmcs
KVM: nVMX: Eliminate vmcs02 pool
KVM: nVMX: mark vmcs12 pages dirty on L2 exit
KVM: nVMX: fix msr bitmaps to prevent L2 from accessing L0 x2APIC
ALSA: pcm: remove SNDRV_PCM_IOCTL1_INFO internal command
pstore: Convert console write to use ->write_buf
ocfs2: fix potential use after free
debugobjects: avoid recursive calls with kmemleak
hfsplus: do not free node before using
hfs: do not free node before using
ocfs2: fix deadlock caused by ocfs2_defrag_extent()
fscache, cachefiles: remove redundant variable 'cache'
fscache: fix race between enablement and dropping of object
xen: xlate_mmu: add missing header to fix 'W=1' warning
drm/ast: fixed reading monitor EDID not stable issue
net: hisilicon: remove unexpected free_netdev
ixgbe: recognize 1000BaseLX SFP modules as 1Gbps
net: thunderx: fix NULL pointer dereference in nic_remove
KVM: x86: fix empty-body warnings
USB: omap_udc: fix USB gadget functionality on Palm Tungsten E
USB: omap_udc: fix omap_udc_start() on 15xx machines
USB: omap_udc: fix crashes on probe error and module removal
USB: omap_udc: use devm_request_irq()
bpf: fix check of allowed specifiers in bpf_trace_printk
exportfs: do not read dentry after free
ASoC: omap-dmic: Add pm_qos handling to avoid overruns with CPU_IDLE
ASoC: omap-mcpdm: Add pm_qos handling to avoid under/overruns with CPU_IDLE
Btrfs: send, fix infinite loop due to directory rename dependencies
hwmon: (w83795) temp4_type has writable permission
ASoC: dapm: Recalculate audio map forcely when card instantiated
hwmon: (ina2xx) Fix current value calculation
s390/cpum_cf: Reject request for sampling in event initialization
sysv: return 'err' instead of 0 in __sysv_write_inode
ARM: OMAP1: ams-delta: Fix possible use of uninitialized field
ARM: OMAP2+: prm44xx: Fix section annotation on omap44xx_prm_enable_io_wakeup
neighbour: Avoid writing before skb->head in neigh_hh_output()
tun: forbid iface creation with rtnl ops
tcp: fix NULL ref in tail loss probe
rtnetlink: ndo_dflt_fdb_dump() only work for ARPHRD_ETHER devices
net: Prevent invalid access to skb->prev in __qdisc_drop_all
net: phy: don't allow __set_phy_supported to add unsupported modes
net: 8139cp: fix a BUG triggered by changing mtu with network traffic
ipv6: Check available headroom in ip6_xmit() even without options
ANDROID: uid_sys_stats: Copy task_struct comm field to bigger buffer
Conflicts:
arch/x86/include/asm/uaccess_32.h
sound/core/pcm_native.c
Change-Id: I1d20594091279ae84c58669dd8ad5fa5e31989ab
[fixed compilation issue in kgsl.c]
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.168
ipv6: Check available headroom in ip6_xmit() even without options
net: 8139cp: fix a BUG triggered by changing mtu with network traffic
net: phy: don't allow __set_phy_supported to add unsupported modes
net: Prevent invalid access to skb->prev in __qdisc_drop_all
rtnetlink: ndo_dflt_fdb_dump() only work for ARPHRD_ETHER devices
tcp: fix NULL ref in tail loss probe
tun: forbid iface creation with rtnl ops
neighbour: Avoid writing before skb->head in neigh_hh_output()
ARM: OMAP2+: prm44xx: Fix section annotation on omap44xx_prm_enable_io_wakeup
ARM: OMAP1: ams-delta: Fix possible use of uninitialized field
sysv: return 'err' instead of 0 in __sysv_write_inode
s390/cpum_cf: Reject request for sampling in event initialization
hwmon: (ina2xx) Fix current value calculation
ASoC: dapm: Recalculate audio map forcely when card instantiated
hwmon: (w83795) temp4_type has writable permission
Btrfs: send, fix infinite loop due to directory rename dependencies
ASoC: omap-mcpdm: Add pm_qos handling to avoid under/overruns with CPU_IDLE
ASoC: omap-dmic: Add pm_qos handling to avoid overruns with CPU_IDLE
exportfs: do not read dentry after free
bpf: fix check of allowed specifiers in bpf_trace_printk
USB: omap_udc: use devm_request_irq()
USB: omap_udc: fix crashes on probe error and module removal
USB: omap_udc: fix omap_udc_start() on 15xx machines
USB: omap_udc: fix USB gadget functionality on Palm Tungsten E
KVM: x86: fix empty-body warnings
net: thunderx: fix NULL pointer dereference in nic_remove
ixgbe: recognize 1000BaseLX SFP modules as 1Gbps
net: hisilicon: remove unexpected free_netdev
drm/ast: fixed reading monitor EDID not stable issue
xen: xlate_mmu: add missing header to fix 'W=1' warning
fscache: fix race between enablement and dropping of object
fscache, cachefiles: remove redundant variable 'cache'
ocfs2: fix deadlock caused by ocfs2_defrag_extent()
hfs: do not free node before using
hfsplus: do not free node before using
debugobjects: avoid recursive calls with kmemleak
ocfs2: fix potential use after free
pstore: Convert console write to use ->write_buf
ALSA: pcm: remove SNDRV_PCM_IOCTL1_INFO internal command
KVM: nVMX: fix msr bitmaps to prevent L2 from accessing L0 x2APIC
KVM: nVMX: mark vmcs12 pages dirty on L2 exit
KVM: nVMX: Eliminate vmcs02 pool
KVM: VMX: introduce alloc_loaded_vmcs
KVM: VMX: make MSR bitmaps per-VCPU
KVM/x86: Add IBPB support
KVM/VMX: Emulate MSR_IA32_ARCH_CAPABILITIES
KVM/VMX: Allow direct access to MSR_IA32_SPEC_CTRL
KVM/SVM: Allow direct access to MSR_IA32_SPEC_CTRL
KVM/x86: Remove indirect MSR op calls from SPEC_CTRL
x86: reorganize SMAP handling in user space accesses
x86: fix SMAP in 32-bit environments
x86: Introduce __uaccess_begin_nospec() and uaccess_try_nospec
x86/usercopy: Replace open coded stac/clac with __uaccess_{begin, end}
x86/uaccess: Use __uaccess_begin_nospec() and uaccess_try_nospec
x86/bugs, KVM: Support the combination of guest and host IBRS
x86/KVM/VMX: Expose SPEC_CTRL Bit(2) to the guest
KVM: SVM: Move spec control call after restore of GS
x86/bugs, KVM: Extend speculation control for VIRT_SPEC_CTRL
x86/speculation: Use synthetic bits for IBRS/IBPB/STIBP
KVM: SVM: Implement VIRT_SPEC_CTRL support for SSBD
bpf: support 8-byte metafield access
bpf/verifier: Add spi variable to check_stack_write()
bpf/verifier: Pass instruction index to check_mem_access() and check_xadd()
bpf: Prevent memory disambiguation attack
wil6210: missing length check in wmi_set_ie
posix-timers: Sanitize overrun handling
mm/hugetlb.c: don't call region_abort if region_chg fails
hugetlbfs: fix offset overflow in hugetlbfs mmap
hugetlbfs: check for pgoff value overflow
hugetlbfs: fix bug in pgoff overflow checking
swiotlb: clean up reporting
sr: pass down correctly sized SCSI sense buffer
mm: remove write/force parameters from __get_user_pages_locked()
mm: remove write/force parameters from __get_user_pages_unlocked()
mm/nommu.c: Switch __get_user_pages_unlocked() to use __get_user_pages()
mm: replace get_user_pages_unlocked() write/force parameters with gup_flags
mm: replace get_user_pages_locked() write/force parameters with gup_flags
mm: replace get_vaddr_frames() write/force parameters with gup_flags
mm: replace get_user_pages() write/force parameters with gup_flags
mm: replace __access_remote_vm() write parameter with gup_flags
mm: replace access_remote_vm() write parameter with gup_flags
proc: don't use FOLL_FORCE for reading cmdline and environment
proc: do not access cmdline nor environ from file-backed areas
media: dvb-frontends: fix i2c access helpers for KASAN
matroxfb: fix size of memcpy
staging: speakup: Replace strncpy with memcpy
rocker: fix rocker_tlv_put_* functions for KASAN
selftests: Move networking/timestamping from Documentation
Linux 4.4.168
Change-Id: I71a633f645fada4b473abcff660a9ada3103592b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit c164154f66f0c9b02673f07aa4f044f1d9c70274 upstream.
This removes the 'write' and 'force' use from get_user_pages_unlocked()
and replaces them with 'gup_flags' to make the use of FOLL_FORCE
explicit in callers as use of this flag can result in surprising
behaviour (and hence bugs) within the mm subsystem.
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[bwh: Backported to 4.4:
- Also update calls from process_vm_rw_single_vec() and async_pf_execute()
- Adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-3f51ea2
Linux 4.4.133
x86/kexec: Avoid double free_page() upon do_kexec_load() failure
hfsplus: stop workqueue when fill_super() failed
cfg80211: limit wiphy names to 128 bytes
gpio: rcar: Add Runtime PM handling for interrupts
time: Fix CLOCK_MONOTONIC_RAW sub-nanosecond accounting
dmaengine: ensure dmaengine helpers check valid callback
scsi: zfcp: fix infinite iteration on ERP ready list
scsi: sg: allocate with __GFP_ZERO in sg_build_indirect()
scsi: libsas: defer ata device eh commands to libata
s390: use expoline thunks in the BPF JIT
s390: extend expoline to BC instructions
s390: move spectre sysfs attribute code
s390/kernel: use expoline for indirect branches
s390/lib: use expoline for indirect branches
s390: move expoline assembler macros to a header
s390: add assembler macros for CPU alternatives
ext2: fix a block leak
tcp: purge write queue in tcp_connect_init()
sock_diag: fix use-after-free read in __sk_free
packet: in packet_snd start writing at link layer allocation
net: test tailroom before appending to linear skb
btrfs: fix reading stale metadata blocks after degraded raid1 mounts
btrfs: fix crash when trying to resume balance without the resume flag
Btrfs: fix xattr loss after power failure
ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions
ARM: 8770/1: kprobes: Prohibit probing on optimized_callback
ARM: 8769/1: kprobes: Fix to use get_kprobe_ctlblk after irq-disabed
tick/broadcast: Use for_each_cpu() specially on UP kernels
ARM: 8771/1: kprobes: Prohibit kprobes on do_undefinstr
efi: Avoid potential crashes, fix the 'struct efi_pci_io_protocol_32' definition for mixed mode
s390: remove indirect branch from do_softirq_own_stack
s390/qdio: don't release memory in qdio_setup_irq()
s390/cpum_sf: ensure sample frequency of perf event attributes is non-zero
s390/qdio: fix access to uninitialized qdio_q fields
mm: don't allow deferred pages with NEED_PER_CPU_KM
powerpc/powernv: Fix NVRAM sleep in invalid context when crashing
procfs: fix pthread cross-thread naming if !PR_DUMPABLE
proc read mm's {arg,env}_{start,end} with mmap semaphore taken.
tracing/x86/xen: Remove zero data size trace events trace_xen_mmu_flush_tlb{_all}
cpufreq: intel_pstate: Enable HWP by default
signals: avoid unnecessary taking of sighand->siglock
mm: filemap: avoid unnecessary calls to lock_page when waiting for IO to complete during a read
mm: filemap: remove redundant code in do_read_cache_page
proc: meminfo: estimate available memory more conservatively
vmscan: do not force-scan file lru if its absolute size is small
powerpc: Don't preempt_disable() in show_cpuinfo()
cpuidle: coupled: remove unused define cpuidle_coupled_lock
powerpc/powernv: remove FW_FEATURE_OPALv3 and just use FW_FEATURE_OPAL
powerpc/powernv: Remove OPALv2 firmware define and references
powerpc/powernv: panic() on OPAL < V3
spi: pxa2xx: Allow 64-bit DMA
ALSA: control: fix a redundant-copy issue
ALSA: hda: Add Lenovo C50 All in one to the power_save blacklist
ALSA: usb: mixer: volume quirk for CM102-A+/102S+
usbip: usbip_host: fix bad unlock balance during stub_probe()
usbip: usbip_host: fix NULL-ptr deref and use-after-free errors
usbip: usbip_host: run rebind from exit when module is removed
usbip: usbip_host: delete device from busid_table after rebind
usbip: usbip_host: refine probe and disconnect debug msgs to be useful
kernel/exit.c: avoid undefined behaviour when calling wait4()
futex: futex_wake_op, fix sign_extend32 sign bits
pipe: cap initial pipe capacity according to pipe-max-size limit
l2tp: revert "l2tp: fix missing print session offset info"
Revert "ARM: dts: imx6qdl-wandboard: Fix audio channel swap"
lockd: lost rollback of set_grace_period() in lockd_down_net()
xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM)
futex: Remove duplicated code and fix undefined behaviour
futex: Remove unnecessary warning from get_futex_key
arm64: Add work around for Arm Cortex-A55 Erratum 1024718
arm64: introduce mov_q macro to move a constant into a 64-bit register
audit: move calcs after alloc and check when logging set loginuid
ALSA: timer: Call notifier in the same spinlock
sctp: delay the authentication for the duplicated cookie-echo chunk
sctp: fix the issue that the cookie-ack with auth can't get processed
tcp: ignore Fast Open on repair mode
bonding: do not allow rlb updates to invalid mac
tg3: Fix vunmap() BUG_ON() triggered from tg3_free_consistent().
sctp: use the old asoc when making the cookie-ack chunk in dupcook_d
sctp: handle two v4 addrs comparison in sctp_inet6_cmp_addr
r8169: fix powering up RTL8168h
qmi_wwan: do not steal interfaces from class drivers
openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found
net: support compat 64-bit time in {s,g}etsockopt
net_sched: fq: take care of throttled flows before reuse
net/mlx4_en: Verify coalescing parameters are in range
net: ethernet: sun: niu set correct packet size in skb
llc: better deal with too small mtu
ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg
dccp: fix tasklet usage
bridge: check iface upper dev when setting master via ioctl
8139too: Use disable_irq_nosync() in rtl8139_poll_controller()
BACKPORT, FROMLIST: fscrypt: add Speck128/256 support
cgroup: Disable IRQs while holding css_set_lock
Revert "cgroup: Disable IRQs while holding css_set_lock"
cgroup: Disable IRQs while holding css_set_lock
ANDROID: proc: fix undefined behavior in proc_uid_base_readdir
x86: vdso: Fix leaky vdso linker with CC=clang.
ANDROID: build: cuttlefish: Upgrade clang to newer version.
ANDROID: build: cuttlefish: Upgrade clang to newer version.
ANDROID: build: cuttlefish: Fix path to clang.
UPSTREAM: dm bufio: avoid sleeping while holding the dm_bufio lock
ANDROID: sdcardfs: Don't d_drop in d_revalidate
Conflicts:
arch/arm64/include/asm/cputype.h
fs/ext4/crypto.c
fs/ext4/ext4.h
kernel/cgroup.c
mm/vmscan.c
Change-Id: Ic10c5722b6439af1cf423fd949c493f786764d7e
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.133
8139too: Use disable_irq_nosync() in rtl8139_poll_controller()
bridge: check iface upper dev when setting master via ioctl
dccp: fix tasklet usage
ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg
llc: better deal with too small mtu
net: ethernet: sun: niu set correct packet size in skb
net/mlx4_en: Verify coalescing parameters are in range
net_sched: fq: take care of throttled flows before reuse
net: support compat 64-bit time in {s,g}etsockopt
openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found
qmi_wwan: do not steal interfaces from class drivers
r8169: fix powering up RTL8168h
sctp: handle two v4 addrs comparison in sctp_inet6_cmp_addr
sctp: use the old asoc when making the cookie-ack chunk in dupcook_d
tg3: Fix vunmap() BUG_ON() triggered from tg3_free_consistent().
bonding: do not allow rlb updates to invalid mac
tcp: ignore Fast Open on repair mode
sctp: fix the issue that the cookie-ack with auth can't get processed
sctp: delay the authentication for the duplicated cookie-echo chunk
ALSA: timer: Call notifier in the same spinlock
audit: move calcs after alloc and check when logging set loginuid
arm64: introduce mov_q macro to move a constant into a 64-bit register
arm64: Add work around for Arm Cortex-A55 Erratum 1024718
futex: Remove unnecessary warning from get_futex_key
futex: Remove duplicated code and fix undefined behaviour
xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM)
lockd: lost rollback of set_grace_period() in lockd_down_net()
Revert "ARM: dts: imx6qdl-wandboard: Fix audio channel swap"
l2tp: revert "l2tp: fix missing print session offset info"
pipe: cap initial pipe capacity according to pipe-max-size limit
futex: futex_wake_op, fix sign_extend32 sign bits
kernel/exit.c: avoid undefined behaviour when calling wait4()
usbip: usbip_host: refine probe and disconnect debug msgs to be useful
usbip: usbip_host: delete device from busid_table after rebind
usbip: usbip_host: run rebind from exit when module is removed
usbip: usbip_host: fix NULL-ptr deref and use-after-free errors
usbip: usbip_host: fix bad unlock balance during stub_probe()
ALSA: usb: mixer: volume quirk for CM102-A+/102S+
ALSA: hda: Add Lenovo C50 All in one to the power_save blacklist
ALSA: control: fix a redundant-copy issue
spi: pxa2xx: Allow 64-bit DMA
powerpc/powernv: panic() on OPAL < V3
powerpc/powernv: Remove OPALv2 firmware define and references
powerpc/powernv: remove FW_FEATURE_OPALv3 and just use FW_FEATURE_OPAL
cpuidle: coupled: remove unused define cpuidle_coupled_lock
powerpc: Don't preempt_disable() in show_cpuinfo()
vmscan: do not force-scan file lru if its absolute size is small
proc: meminfo: estimate available memory more conservatively
mm: filemap: remove redundant code in do_read_cache_page
mm: filemap: avoid unnecessary calls to lock_page when waiting for IO to complete during a read
signals: avoid unnecessary taking of sighand->siglock
cpufreq: intel_pstate: Enable HWP by default
tracing/x86/xen: Remove zero data size trace events trace_xen_mmu_flush_tlb{_all}
proc read mm's {arg,env}_{start,end} with mmap semaphore taken.
procfs: fix pthread cross-thread naming if !PR_DUMPABLE
powerpc/powernv: Fix NVRAM sleep in invalid context when crashing
mm: don't allow deferred pages with NEED_PER_CPU_KM
s390/qdio: fix access to uninitialized qdio_q fields
s390/cpum_sf: ensure sample frequency of perf event attributes is non-zero
s390/qdio: don't release memory in qdio_setup_irq()
s390: remove indirect branch from do_softirq_own_stack
efi: Avoid potential crashes, fix the 'struct efi_pci_io_protocol_32' definition for mixed mode
ARM: 8771/1: kprobes: Prohibit kprobes on do_undefinstr
tick/broadcast: Use for_each_cpu() specially on UP kernels
ARM: 8769/1: kprobes: Fix to use get_kprobe_ctlblk after irq-disabed
ARM: 8770/1: kprobes: Prohibit probing on optimized_callback
ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions
Btrfs: fix xattr loss after power failure
btrfs: fix crash when trying to resume balance without the resume flag
btrfs: fix reading stale metadata blocks after degraded raid1 mounts
net: test tailroom before appending to linear skb
packet: in packet_snd start writing at link layer allocation
sock_diag: fix use-after-free read in __sk_free
tcp: purge write queue in tcp_connect_init()
ext2: fix a block leak
s390: add assembler macros for CPU alternatives
s390: move expoline assembler macros to a header
s390/lib: use expoline for indirect branches
s390/kernel: use expoline for indirect branches
s390: move spectre sysfs attribute code
s390: extend expoline to BC instructions
s390: use expoline thunks in the BPF JIT
scsi: libsas: defer ata device eh commands to libata
scsi: sg: allocate with __GFP_ZERO in sg_build_indirect()
scsi: zfcp: fix infinite iteration on ERP ready list
dmaengine: ensure dmaengine helpers check valid callback
time: Fix CLOCK_MONOTONIC_RAW sub-nanosecond accounting
gpio: rcar: Add Runtime PM handling for interrupts
cfg80211: limit wiphy names to 128 bytes
hfsplus: stop workqueue when fill_super() failed
x86/kexec: Avoid double free_page() upon do_kexec_load() failure
Linux 4.4.133
Change-Id: I0554b12889bc91add2a444da95f18d59c6fb9cdb
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit a3b609ef9f8b1dbfe97034ccad6cd3fe71fbe7ab upstream.
Only functions doing more than one read are modified. Consumeres
happened to deal with possibly changing data, but it does not seem like
a good thing to rely on.
Signed-off-by: Mateusz Guzik <mguzik@redhat.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jarod Wilson <jarod@redhat.com>
Cc: Jan Stancek <jstancek@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Anshuman Khandual <anshuman.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-5f7f76a
Linux 4.4.118
net: dst_cache_per_cpu_dst_set() can be static
crypto: s5p-sss - Fix kernel Oops in AES-ECB mode
KVM: nVMX: invvpid handling improvements
KVM: VMX: clean up declaration of VPID/EPT invalidation types
kvm: nVMX: Fix kernel panics induced by illegal INVEPT/INVVPID types
KVM: nVMX: vmx_complete_nested_posted_interrupt() can't fail
KVM: nVMX: kmap() can't fail
x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL
x86/spectre: Simplify spectre_v2 command line parsing
x86/retpoline: Avoid retpolines for built-in __init functions
x86/kvm: Update spectre-v1 mitigation
x86/paravirt: Remove 'noreplace-paravirt' cmdline option
x86/spectre: Fix spelling mistake: "vunerable"-> "vulnerable"
x86/spectre: Report get_user mitigation for spectre_v1
nl80211: Sanitize array index in parse_txq_params
vfs, fdtable: Prevent bounds-check bypass via speculative execution
x86/syscall: Sanitize syscall table de-references under speculation
x86/get_user: Use pointer masking to limit speculation
x86: Introduce barrier_nospec
x86: Implement array_index_mask_nospec
array_index_nospec: Sanitize speculative array de-references
Documentation: Document array_index_nospec
x86/spectre: Check CONFIG_RETPOLINE in command line parser
x86/cpu/bugs: Make retpoline module warning conditional
x86/bugs: Drop one "mitigation" from dmesg
x86/nospec: Fix header guards names
module/retpoline: Warn about missing retpoline in module
KVM: VMX: Make indirect call speculation safe
KVM: x86: Make indirect calls in emulator speculation safe
x86/retpoline: Remove the esp/rsp thunk
KVM: async_pf: Fix #DF due to inject "Page not Present" and "Page Ready" exceptions simultaneously
kasan: rework Kconfig settings
drm/gma500: remove helper function
x86/microcode/AMD: Change load_microcode_amd()'s param to bool to fix preemptibility bug
genksyms: Fix segfault with invalid declarations
dell-wmi, dell-laptop: depends DMI
netlink: fix nla_put_{u8,u16,u32} for KASAN
ASoC: Intel: Kconfig: fix build when ACPI is not enabled
ARM: tegra: select USB_ULPI from EHCI rather than platform
ncr5380: shut up gcc indentation warning
usb: phy: msm add regulator dependency
idle: i7300: add PCI dependency
binfmt_elf: compat: avoid unused function warning
isdn: sc: work around type mismatch warning
power: bq27xxx_battery: mark some symbols __maybe_unused
Revert "power: bq27xxx_battery: Remove unneeded dependency in Kconfig"
ncpfs: fix unused variable warning
gpio: xgene: mark PM functions as __maybe_unused
net: hp100: remove unnecessary #ifdefs
dmaengine: zx: fix build warning
perf/x86: Shut up false-positive -Wmaybe-uninitialized warning
wireless: cw1200: use __maybe_unused to hide pm functions_
cw1200: fix bogus maybe-uninitialized warning
v4l: remove MEDIA_TUNER dependency for VIDEO_TUNER
hdpvr: hide unused variable
drm/gma500: Sanity-check pipe index
serial: 8250_mid: fix broken DMA dependency
ASoC: rockchip: use __maybe_unused to hide st_irq_syscfg_resume
ISDN: eicon: reduce stack size of sig_ind function
em28xx: only use mt9v011 if camera support is enabled
go7007: add MEDIA_CAMERA_SUPPORT dependency
KVM: add X86_LOCAL_APIC dependency
Input: tca8418_keypad - hide gcc-4.9 -Wmaybe-uninitialized warning
drm/nouveau: hide gcc-4.9 -Wmaybe-uninitialized
tc358743: fix register i2c_rd/wr functions
staging: unisys: visorinput depends on INPUT
i2c: remove __init from i2c_register_board_info()
b2c2: flexcop: avoid unused function warnings
infiniband: cxgb4: use %pR format string for printing resources
iio: adc: axp288: remove redundant duplicate const on axp288_adc_channels
ASoC: mediatek: add i2c dependency
genirq/msi: Add stubs for get_cached_msi_msg/pci_write_msi_msg
tty: cyclades: cyz_interrupt is only used for PCI
drm/vmwgfx: use *_32_bits() macros
tlan: avoid unused label with PCI=n
tc1100-wmi: fix build warning when CONFIG_PM not enabled
ipv4: ipconfig: avoid unused ic_proto_used symbol
netfilter: ipvs: avoid unused variable warnings
x86/platform/olpc: Fix resume handler build warning
staging: wilc1000: fix kbuild test robot error
rtlwifi: fix gcc-6 indentation warning
USB: cdc_subset: only build when one driver is enabled
hwrng: exynos - use __maybe_unused to hide pm functions
fbdev: sm712fb: avoid unused function warnings
Drivers: hv: vmbus: fix build warning
modsign: hide openssl output in silent builds
fbdev: s6e8ax0: avoid unused function warnings
mtd: cfi: enforce valid geometry configuration
mtd: sh_flctl: pass FIFO as physical address
amd-xgbe: Fix unused suspend handlers build warning
fbdev: auo_k190x: avoid unused function warnings
driver-core: use 'dev' argument in dev_dbg_ratelimited stub
target/user: Fix cast from pointer to phys_addr_t
tty: hvc_xen: hide xen_console_remove when unused
usb: musb/ux500: remove duplicate check for dma_is_compatible
pwc: hide unused label
SCSI: initio: remove duplicate module device table
scsi: mvumi: use __maybe_unused to hide pm functions
video: Use bool instead int pointer for get_opt_bool() argument
fbdev: sis: enforce selection of at least one backend
staging: ste_rmi4: avoid unused function warnings
video: fbdev: sis: remove unused variable
scsi: fdomain: drop fdomain_pci_tbl when built-in
mptfusion: hide unused seq_mpt_print_ioc_summary function
mtd: maps: add __init attribute
mtd: ichxrom: maybe-uninitialized with gcc-4.9
md: avoid warning for 32-bit sector_t
profile: hide unused functions when !CONFIG_PROC_FS
dpt_i2o: fix build warning
drivers/net: fix eisa_driver probe section mismatch
scsi: sim710: fix build warning
x86/boot: Avoid warning for zero-filling .bss
thermal: spear: use __maybe_unused for PM functions
ssb: mark ssb_bus_register as __maybe_unused
reiserfs: avoid a -Wmaybe-uninitialized warning
ALSA: hda/ca0132 - fix possible NULL pointer use
arm64: Kconfig: select COMPAT_BINFMT_ELF only when BINFMT_ELF is set
scsi: advansys: fix uninitialized data access
x86/platform: Add PCI dependency for PUNIT_ATOM_DEBUG
x86: add MULTIUSER dependency for KVM
thermal: fix INTEL_SOC_DTS_IOSF_CORE dependencies
x86/build: Silence the build with "make -s"
tools build: Add tools tree support for 'make -s'
x86/fpu/math-emu: Fix possible uninitialized variable use
arm64: define BUG() instruction without CONFIG_BUG
x86/ras/inject: Make it depend on X86_LOCAL_APIC=y
scsi: advansys: fix build warning for PCI=n
video: fbdev: via: remove possibly unused variables
platform/x86: intel_mid_thermal: Fix suspend handlers unused warning
gpio: intel-mid: Fix build warning when !CONFIG_PM
vmxnet3: prevent building with 64K pages
isdn: icn: remove a #warning
virtio_balloon: prevent uninitialized variable use
hippi: Fix a Fix a possible sleep-in-atomic bug in rr_close
xen: XEN_ACPI_PROCESSOR is Dom0-only
x86/mm/kmmio: Fix mmiotrace for page unaligned addresses
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
dmaengine: jz4740: disable/unprepare clk if probe fails
drm/armada: fix leak of crtc structure
xfrm: Fix stack-out-of-bounds with misconfigured transport mode policies.
spi: sun4i: disable clocks in the remove function
ASoC: rockchip: disable clock on error
clk: fix a panic error caused by accessing NULL pointer
dmaengine: at_hdmac: fix potential NULL pointer dereference in atc_prep_dma_interleaved
dmaengine: ioat: Fix error handling path
509: fix printing uninitialized stack memory when OID is empty
btrfs: Fix possible off-by-one in btrfs_search_path_in_tree
net_sched: red: Avoid illegal values
net_sched: red: Avoid devision by zero
gianfar: fix a flooded alignment reports because of padding issue.
s390/dasd: prevent prefix I/O error
powerpc/perf: Fix oops when grouping different pmu events
ipvlan: Add the skb->mark as flow4's member to lookup route
scripts/kernel-doc: Don't fail with status != 0 if error encountered with -none
RDMA/cma: Make sure that PSN is not over max allowed
pinctrl: sunxi: Fix A80 interrupt pin bank
media: s5k6aa: describe some function parameters
perf bench numa: Fixup discontiguous/sparse numa nodes
perf top: Fix window dimensions change handling
ARM: dts: am4372: Correct the interrupts_properties of McASP
ARM: dts: Fix omap4 hang with GPS connected to USB by using wakeupgen
ARM: AM33xx: PRM: Remove am33xx_pwrdm_read_prev_pwrst function
ARM: OMAP2+: Fix SRAM virt to phys translation for save_secure_ram_context
usb: build drivers/usb/common/ when USB_SUPPORT is set
usbip: keep usbip_device sockfd state in sync with tcp_socket
staging: iio: adc: ad7192: fix external frequency setting
binder: check for binder_thread allocation failure in binder_poll()
staging: android: ashmem: Fix a race condition in pin ioctls
dn_getsockoptdecnet: move nf_{get/set}sockopt outside sock lock
Make DST_CACHE a silent config option
arm64: dts: add #cooling-cells to CPU nodes
video: fbdev/mmp: add MODULE_LICENSE
ASoC: ux500: add MODULE_LICENSE tag
net: avoid skb_warn_bad_offload on IS_ERR
netfilter: xt_RATEEST: acquire xt_rateest_mutex for hash insert
netfilter: on sockopt() acquire sock lock only in the required scope
netfilter: ipt_CLUSTERIP: fix out-of-bounds accesses in clusterip_tg_check()
netfilter: x_tables: avoid out-of-bounds reads in xt_request_find_{match|target}
netfilter: x_tables: fix int overflow in xt_alloc_table_info()
KVM: x86: fix escape of guest dr6 to the host
crypto: x86/twofish-3way - Fix %rbp usage
selinux: skip bounded transition processing if the policy isn't loaded
selinux: ensure the context is NUL terminated in security_context_to_sid_core()
Provide a function to create a NUL-terminated string from unterminated data
drm: Require __GFP_NOFAIL for the legacy drm_modeset_lock_all
blktrace: fix unlocked registration of tracepoints
xfrm: check id proto in validate_tmpl()
xfrm: Fix stack-out-of-bounds read on socket policy lookup.
mm,vmscan: Make unregister_shrinker() no-op if register_shrinker() failed.
cfg80211: check dev_set_name() return value
net: replace dst_cache ip6_tunnel implementation with the generic one
net: add dst_cache support
ANDROID: sdcardfs: Hold i_mutex for i_size_write
BACKPORT, FROMGIT: crypto: speck - add test vectors for Speck64-XTS
BACKPORT, FROMGIT: crypto: speck - add test vectors for Speck128-XTS
BACKPORT, FROMGIT: crypto: arm/speck - add NEON-accelerated implementation of Speck-XTS
FROMGIT: crypto: speck - export common helpers
BACKPORT, FROMGIT: crypto: speck - add support for the Speck block cipher
UPSTREAM: ANDROID: binder: synchronize_rcu() when using POLLFREE.
f2fs: updates on v4.16-rc1
Conflicts:
net/Kconfig
net/core/Makefile
Change-Id: I659b0444812b04252f1f1fba8bc62410ce42b061
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.118
net: add dst_cache support
net: replace dst_cache ip6_tunnel implementation with the generic one
cfg80211: check dev_set_name() return value
mm,vmscan: Make unregister_shrinker() no-op if register_shrinker() failed.
xfrm: Fix stack-out-of-bounds read on socket policy lookup.
xfrm: check id proto in validate_tmpl()
blktrace: fix unlocked registration of tracepoints
drm: Require __GFP_NOFAIL for the legacy drm_modeset_lock_all
Provide a function to create a NUL-terminated string from unterminated data
selinux: ensure the context is NUL terminated in security_context_to_sid_core()
selinux: skip bounded transition processing if the policy isn't loaded
crypto: x86/twofish-3way - Fix %rbp usage
KVM: x86: fix escape of guest dr6 to the host
netfilter: x_tables: fix int overflow in xt_alloc_table_info()
netfilter: x_tables: avoid out-of-bounds reads in xt_request_find_{match|target}
netfilter: ipt_CLUSTERIP: fix out-of-bounds accesses in clusterip_tg_check()
netfilter: on sockopt() acquire sock lock only in the required scope
netfilter: xt_RATEEST: acquire xt_rateest_mutex for hash insert
net: avoid skb_warn_bad_offload on IS_ERR
ASoC: ux500: add MODULE_LICENSE tag
video: fbdev/mmp: add MODULE_LICENSE
arm64: dts: add #cooling-cells to CPU nodes
Make DST_CACHE a silent config option
dn_getsockoptdecnet: move nf_{get/set}sockopt outside sock lock
staging: android: ashmem: Fix a race condition in pin ioctls
binder: check for binder_thread allocation failure in binder_poll()
staging: iio: adc: ad7192: fix external frequency setting
usbip: keep usbip_device sockfd state in sync with tcp_socket
usb: build drivers/usb/common/ when USB_SUPPORT is set
ARM: OMAP2+: Fix SRAM virt to phys translation for save_secure_ram_context
ARM: AM33xx: PRM: Remove am33xx_pwrdm_read_prev_pwrst function
ARM: dts: Fix omap4 hang with GPS connected to USB by using wakeupgen
ARM: dts: am4372: Correct the interrupts_properties of McASP
perf top: Fix window dimensions change handling
perf bench numa: Fixup discontiguous/sparse numa nodes
media: s5k6aa: describe some function parameters
pinctrl: sunxi: Fix A80 interrupt pin bank
RDMA/cma: Make sure that PSN is not over max allowed
scripts/kernel-doc: Don't fail with status != 0 if error encountered with -none
ipvlan: Add the skb->mark as flow4's member to lookup route
powerpc/perf: Fix oops when grouping different pmu events
s390/dasd: prevent prefix I/O error
gianfar: fix a flooded alignment reports because of padding issue.
net_sched: red: Avoid devision by zero
net_sched: red: Avoid illegal values
btrfs: Fix possible off-by-one in btrfs_search_path_in_tree
509: fix printing uninitialized stack memory when OID is empty
dmaengine: ioat: Fix error handling path
dmaengine: at_hdmac: fix potential NULL pointer dereference in atc_prep_dma_interleaved
clk: fix a panic error caused by accessing NULL pointer
ASoC: rockchip: disable clock on error
spi: sun4i: disable clocks in the remove function
xfrm: Fix stack-out-of-bounds with misconfigured transport mode policies.
drm/armada: fix leak of crtc structure
dmaengine: jz4740: disable/unprepare clk if probe fails
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
x86/mm/kmmio: Fix mmiotrace for page unaligned addresses
xen: XEN_ACPI_PROCESSOR is Dom0-only
hippi: Fix a Fix a possible sleep-in-atomic bug in rr_close
virtio_balloon: prevent uninitialized variable use
isdn: icn: remove a #warning
vmxnet3: prevent building with 64K pages
gpio: intel-mid: Fix build warning when !CONFIG_PM
platform/x86: intel_mid_thermal: Fix suspend handlers unused warning
video: fbdev: via: remove possibly unused variables
scsi: advansys: fix build warning for PCI=n
x86/ras/inject: Make it depend on X86_LOCAL_APIC=y
arm64: define BUG() instruction without CONFIG_BUG
x86/fpu/math-emu: Fix possible uninitialized variable use
tools build: Add tools tree support for 'make -s'
x86/build: Silence the build with "make -s"
thermal: fix INTEL_SOC_DTS_IOSF_CORE dependencies
x86: add MULTIUSER dependency for KVM
x86/platform: Add PCI dependency for PUNIT_ATOM_DEBUG
scsi: advansys: fix uninitialized data access
arm64: Kconfig: select COMPAT_BINFMT_ELF only when BINFMT_ELF is set
ALSA: hda/ca0132 - fix possible NULL pointer use
reiserfs: avoid a -Wmaybe-uninitialized warning
ssb: mark ssb_bus_register as __maybe_unused
thermal: spear: use __maybe_unused for PM functions
x86/boot: Avoid warning for zero-filling .bss
scsi: sim710: fix build warning
drivers/net: fix eisa_driver probe section mismatch
dpt_i2o: fix build warning
profile: hide unused functions when !CONFIG_PROC_FS
md: avoid warning for 32-bit sector_t
mtd: ichxrom: maybe-uninitialized with gcc-4.9
mtd: maps: add __init attribute
mptfusion: hide unused seq_mpt_print_ioc_summary function
scsi: fdomain: drop fdomain_pci_tbl when built-in
video: fbdev: sis: remove unused variable
staging: ste_rmi4: avoid unused function warnings
fbdev: sis: enforce selection of at least one backend
video: Use bool instead int pointer for get_opt_bool() argument
scsi: mvumi: use __maybe_unused to hide pm functions
SCSI: initio: remove duplicate module device table
pwc: hide unused label
usb: musb/ux500: remove duplicate check for dma_is_compatible
tty: hvc_xen: hide xen_console_remove when unused
target/user: Fix cast from pointer to phys_addr_t
driver-core: use 'dev' argument in dev_dbg_ratelimited stub
fbdev: auo_k190x: avoid unused function warnings
amd-xgbe: Fix unused suspend handlers build warning
mtd: sh_flctl: pass FIFO as physical address
mtd: cfi: enforce valid geometry configuration
fbdev: s6e8ax0: avoid unused function warnings
modsign: hide openssl output in silent builds
Drivers: hv: vmbus: fix build warning
fbdev: sm712fb: avoid unused function warnings
hwrng: exynos - use __maybe_unused to hide pm functions
USB: cdc_subset: only build when one driver is enabled
rtlwifi: fix gcc-6 indentation warning
staging: wilc1000: fix kbuild test robot error
x86/platform/olpc: Fix resume handler build warning
netfilter: ipvs: avoid unused variable warnings
ipv4: ipconfig: avoid unused ic_proto_used symbol
tc1100-wmi: fix build warning when CONFIG_PM not enabled
tlan: avoid unused label with PCI=n
drm/vmwgfx: use *_32_bits() macros
tty: cyclades: cyz_interrupt is only used for PCI
genirq/msi: Add stubs for get_cached_msi_msg/pci_write_msi_msg
ASoC: mediatek: add i2c dependency
iio: adc: axp288: remove redundant duplicate const on axp288_adc_channels
infiniband: cxgb4: use %pR format string for printing resources
b2c2: flexcop: avoid unused function warnings
i2c: remove __init from i2c_register_board_info()
staging: unisys: visorinput depends on INPUT
tc358743: fix register i2c_rd/wr functions
drm/nouveau: hide gcc-4.9 -Wmaybe-uninitialized
Input: tca8418_keypad - hide gcc-4.9 -Wmaybe-uninitialized warning
KVM: add X86_LOCAL_APIC dependency
go7007: add MEDIA_CAMERA_SUPPORT dependency
em28xx: only use mt9v011 if camera support is enabled
ISDN: eicon: reduce stack size of sig_ind function
ASoC: rockchip: use __maybe_unused to hide st_irq_syscfg_resume
serial: 8250_mid: fix broken DMA dependency
drm/gma500: Sanity-check pipe index
hdpvr: hide unused variable
v4l: remove MEDIA_TUNER dependency for VIDEO_TUNER
cw1200: fix bogus maybe-uninitialized warning
wireless: cw1200: use __maybe_unused to hide pm functions_
perf/x86: Shut up false-positive -Wmaybe-uninitialized warning
dmaengine: zx: fix build warning
net: hp100: remove unnecessary #ifdefs
gpio: xgene: mark PM functions as __maybe_unused
ncpfs: fix unused variable warning
Revert "power: bq27xxx_battery: Remove unneeded dependency in Kconfig"
power: bq27xxx_battery: mark some symbols __maybe_unused
isdn: sc: work around type mismatch warning
binfmt_elf: compat: avoid unused function warning
idle: i7300: add PCI dependency
usb: phy: msm add regulator dependency
ncr5380: shut up gcc indentation warning
ARM: tegra: select USB_ULPI from EHCI rather than platform
ASoC: Intel: Kconfig: fix build when ACPI is not enabled
netlink: fix nla_put_{u8,u16,u32} for KASAN
dell-wmi, dell-laptop: depends DMI
genksyms: Fix segfault with invalid declarations
x86/microcode/AMD: Change load_microcode_amd()'s param to bool to fix preemptibility bug
drm/gma500: remove helper function
kasan: rework Kconfig settings
KVM: async_pf: Fix #DF due to inject "Page not Present" and "Page Ready" exceptions simultaneously
x86/retpoline: Remove the esp/rsp thunk
KVM: x86: Make indirect calls in emulator speculation safe
KVM: VMX: Make indirect call speculation safe
module/retpoline: Warn about missing retpoline in module
x86/nospec: Fix header guards names
x86/bugs: Drop one "mitigation" from dmesg
x86/cpu/bugs: Make retpoline module warning conditional
x86/spectre: Check CONFIG_RETPOLINE in command line parser
Documentation: Document array_index_nospec
array_index_nospec: Sanitize speculative array de-references
x86: Implement array_index_mask_nospec
x86: Introduce barrier_nospec
x86/get_user: Use pointer masking to limit speculation
x86/syscall: Sanitize syscall table de-references under speculation
vfs, fdtable: Prevent bounds-check bypass via speculative execution
nl80211: Sanitize array index in parse_txq_params
x86/spectre: Report get_user mitigation for spectre_v1
x86/spectre: Fix spelling mistake: "vunerable"-> "vulnerable"
x86/paravirt: Remove 'noreplace-paravirt' cmdline option
x86/kvm: Update spectre-v1 mitigation
x86/retpoline: Avoid retpolines for built-in __init functions
x86/spectre: Simplify spectre_v2 command line parsing
x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL
KVM: nVMX: kmap() can't fail
KVM: nVMX: vmx_complete_nested_posted_interrupt() can't fail
kvm: nVMX: Fix kernel panics induced by illegal INVEPT/INVVPID types
KVM: VMX: clean up declaration of VPID/EPT invalidation types
KVM: nVMX: invvpid handling improvements
crypto: s5p-sss - Fix kernel Oops in AES-ECB mode
net: dst_cache_per_cpu_dst_set() can be static
Linux 4.4.118
Change-Id: I01c76e1c15a611e13a1e98092bc5c01cdb5b6adb
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit f35157417215ec138c920320c746fdb3e04ef1d5 upstream.
Provide a function, kmemdup_nul(), that will create a NUL-terminated string
from an unterminated character array where the length is known in advance.
This is better than kstrndup() in situations where we already know the
string length as the strnlen() in kstrndup() is superfluous.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This is cherry-picked from upstrea-f2fs-stable-linux-4.4.y.
Changes include:
commit c7fd9e2b4a6876 ("f2fs: hurry up to issue discard after io interruption")
commit 603dde39653d6d ("f2fs: fix to show correct discard_granularity in sysfs")
...
commit 565f0225f95f15 ("f2fs: factor out discard command info into discard_cmd_control")
commit c4cc29d19eaf01 ("f2fs: remove batched discard in f2fs_trim_fs")
Change-Id: Icd8a85ac0c19a8aa25cd2591a12b4e9b85bdf1c5
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
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We have allowed migration for only LRU pages until now and it was enough
to make high-order pages. But recently, embedded system(e.g., webOS,
android) uses lots of non-movable pages(e.g., zram, GPU memory) so we
have seen several reports about troubles of small high-order allocation.
For fixing the problem, there were several efforts (e,g,. enhance
compaction algorithm, SLUB fallback to 0-order page, reserved memory,
vmalloc and so on) but if there are lots of non-movable pages in system,
their solutions are void in the long run.
So, this patch is to support facility to change non-movable pages with
movable. For the feature, this patch introduces functions related to
migration to address_space_operations as well as some page flags.
If a driver want to make own pages movable, it should define three
functions which are function pointers of struct
address_space_operations.
1. bool (*isolate_page) (struct page *page, isolate_mode_t mode);
What VM expects on isolate_page function of driver is to return *true*
if driver isolates page successfully. On returing true, VM marks the
page as PG_isolated so concurrent isolation in several CPUs skip the
page for isolation. If a driver cannot isolate the page, it should
return *false*.
Once page is successfully isolated, VM uses page.lru fields so driver
shouldn't expect to preserve values in that fields.
2. int (*migratepage) (struct address_space *mapping,
struct page *newpage, struct page *oldpage, enum migrate_mode);
After isolation, VM calls migratepage of driver with isolated page. The
function of migratepage is to move content of the old page to new page
and set up fields of struct page newpage. Keep in mind that you should
indicate to the VM the oldpage is no longer movable via
__ClearPageMovable() under page_lock if you migrated the oldpage
successfully and returns 0. If driver cannot migrate the page at the
moment, driver can return -EAGAIN. On -EAGAIN, VM will retry page
migration in a short time because VM interprets -EAGAIN as "temporal
migration failure". On returning any error except -EAGAIN, VM will give
up the page migration without retrying in this time.
Driver shouldn't touch page.lru field VM using in the functions.
3. void (*putback_page)(struct page *);
If migration fails on isolated page, VM should return the isolated page
to the driver so VM calls driver's putback_page with migration failed
page. In this function, driver should put the isolated page back to the
own data structure.
4. non-lru movable page flags
There are two page flags for supporting non-lru movable page.
* PG_movable
Driver should use the below function to make page movable under
page_lock.
void __SetPageMovable(struct page *page, struct address_space *mapping)
It needs argument of address_space for registering migration family
functions which will be called by VM. Exactly speaking, PG_movable is
not a real flag of struct page. Rather than, VM reuses page->mapping's
lower bits to represent it.
#define PAGE_MAPPING_MOVABLE 0x2
page->mapping = page->mapping | PAGE_MAPPING_MOVABLE;
so driver shouldn't access page->mapping directly. Instead, driver
should use page_mapping which mask off the low two bits of page->mapping
so it can get right struct address_space.
For testing of non-lru movable page, VM supports __PageMovable function.
However, it doesn't guarantee to identify non-lru movable page because
page->mapping field is unified with other variables in struct page. As
well, if driver releases the page after isolation by VM, page->mapping
doesn't have stable value although it has PAGE_MAPPING_MOVABLE (Look at
__ClearPageMovable). But __PageMovable is cheap to catch whether page
is LRU or non-lru movable once the page has been isolated. Because LRU
pages never can have PAGE_MAPPING_MOVABLE in page->mapping. It is also
good for just peeking to test non-lru movable pages before more
expensive checking with lock_page in pfn scanning to select victim.
For guaranteeing non-lru movable page, VM provides PageMovable function.
Unlike __PageMovable, PageMovable functions validates page->mapping and
mapping->a_ops->isolate_page under lock_page. The lock_page prevents
sudden destroying of page->mapping.
Driver using __SetPageMovable should clear the flag via
__ClearMovablePage under page_lock before the releasing the page.
* PG_isolated
To prevent concurrent isolation among several CPUs, VM marks isolated
page as PG_isolated under lock_page. So if a CPU encounters PG_isolated
non-lru movable page, it can skip it. Driver doesn't need to manipulate
the flag because VM will set/clear it automatically. Keep in mind that
if driver sees PG_isolated page, it means the page have been isolated by
VM so it shouldn't touch page.lru field. PG_isolated is alias with
PG_reclaim flag so driver shouldn't use the flag for own purpose.
[opensource.ganesh@gmail.com: mm/compaction: remove local variable is_lru]
Link: http://lkml.kernel.org/r/20160618014841.GA7422@leo-test
Link: http://lkml.kernel.org/r/1464736881-24886-3-git-send-email-minchan@kernel.org
Signed-off-by: Gioh Kim <gi-oh.kim@profitbricks.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: John Einar Reitan <john.reitan@foss.arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Git-commit: bda807d4445414e8e77da704f116bb0880fe0c76
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Change-Id: I03380d927fed84c7464bd5f7c4405bef6b265b69
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
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[ Upstream commit 65376df582174ffcec9e6471bf5b0dd79ba05e4a ]
Commit b76437579d13 ("procfs: mark thread stack correctly in
proc/<pid>/maps") added [stack:TID] annotation to /proc/<pid>/maps.
Finding the task of a stack VMA requires walking the entire thread list,
turning this into quadratic behavior: a thousand threads means a
thousand stacks, so the rendering of /proc/<pid>/maps needs to look at a
million combinations.
The cost is not in proportion to the usefulness as described in the
patch.
Drop the [stack:TID] annotation to make /proc/<pid>/maps (and
/proc/<pid>/numa_maps) usable again for higher thread counts.
The [stack] annotation inside /proc/<pid>/task/<tid>/maps is retained, as
identifying the stack VMA there is an O(1) operation.
Siddesh said:
"The end users needed a way to identify thread stacks programmatically and
there wasn't a way to do that. I'm afraid I no longer remember (or have
access to the resources that would aid my memory since I changed
employers) the details of their requirement. However, I did do this on my
own time because I thought it was an interesting project for me and nobody
really gave any feedback then as to its utility, so as far as I am
concerned you could roll back the main thread maps information since the
information is available in the thread-specific files"
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Siddhesh Poyarekar <siddhesh.poyarekar@gmail.com>
Cc: Shaohua Li <shli@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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linux/mm.h provides offset_in_page() macro. Let's use already predefined
macro instead of (addr & ~PAGE_MASK).
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Most-used page->mapping helper -- page_mapping() -- has already uninlined.
Let's uninline also page_rmapping() and page_anon_vma(). It saves us
depending on configuration around 400 bytes in text:
text data bss dec hex filename
660318 99254 410000 1169572 11d8a4 mm/built-in.o-before
659854 99254 410000 1169108 11d6d4 mm/built-in.o
I also tried to make code a bit more clean.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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kstrdup() is often used to duplicate strings where neither source neither
destination will be ever modified. In such case we can just reuse the
source instead of duplicating it. The problem is that we must be sure
that the source is non-modifiable and its life-time is long enough.
I suspect the good candidates for such strings are strings located in
kernel .rodata section, they cannot be modifed because the section is
read-only and their life-time is equal to kernel life-time.
This small patchset proposes alternative version of kstrdup -
kstrdup_const, which returns source string if it is located in .rodata
otherwise it fallbacks to kstrdup. To verify if the source is in
.rodata function checks if the address is between sentinels
__start_rodata, __end_rodata. I guess it should work with all
architectures.
The main patch is accompanied by four patches constifying kstrdup for
cases where situtation described above happens frequently.
I have tested the patchset on mobile platform (exynos4210-trats) and it
saves 3272 string allocations. Since minimal allocation is 32 or 64
bytes depending on Kconfig options the patchset saves respectively about
100KB or 200KB of memory.
Stats from tested platform show that the main offender is sysfs:
By caller:
2260 __kernfs_new_node
631 clk_register+0xc8/0x1b8
318 clk_register+0x34/0x1b8
51 kmem_cache_create
12 alloc_vfsmnt
By string (with count >= 5):
883 power
876 subsystem
135 parameters
132 device
61 iommu_group
...
This patch (of 5):
Add an alternative version of kstrdup which returns pointer to constant
char array. The function checks if input string is in persistent and
read-only memory section, if yes it returns the input string, otherwise it
fallbacks to kstrdup.
kstrdup_const is accompanied by kfree_const performing conditional memory
deallocation of the string.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Greg KH <greg@kroah.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This allows the get_user_pages_fast slow path to release the mmap_sem
before blocking.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andres Lagar-Cavilla <andreslc@google.com>
Cc: Peter Feiner <pfeiner@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- Rename vm_is_stack() to task_of_stack() and change it to return
"struct task_struct *" rather than the global (and thus wrong in
general) pid_t.
- Add the new pid_of_stack() helper which calls task_of_stack() and
uses the right namespace to report the correct pid_t.
Unfortunately we need to define this helper twice, in task_mmu.c
and in task_nommu.c. perhaps it makes sense to add fs/proc/util.c
and move at least pid_of_stack/task_of_stack there to avoid the
code duplication.
- Change show_map_vma() and show_numa_map() to use the new helper.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Aleksei hit the soft lockup during reading /proc/PID/smaps. David
investigated the problem and suggested the right fix.
while_each_thread() is racy and should die, this patch updates
vm_is_stack().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Aleksei Besogonov <alex.besogonov@gmail.com>
Tested-by: Aleksei Besogonov <alex.besogonov@gmail.com>
Suggested-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Functions krealloc(), __krealloc(), kzfree() belongs to slab API, so
should be placed in slab_common.c
Also move slab allocator's tracepoints defenitions to slab_common.c No
functional changes here.
Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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too many places open-code it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Pull audit updates from Eric Paris.
* git://git.infradead.org/users/eparis/audit: (28 commits)
AUDIT: make audit_is_compat depend on CONFIG_AUDIT_COMPAT_GENERIC
audit: renumber AUDIT_FEATURE_CHANGE into the 1300 range
audit: do not cast audit_rule_data pointers pointlesly
AUDIT: Allow login in non-init namespaces
audit: define audit_is_compat in kernel internal header
kernel: Use RCU_INIT_POINTER(x, NULL) in audit.c
sched: declare pid_alive as inline
audit: use uapi/linux/audit.h for AUDIT_ARCH declarations
syscall_get_arch: remove useless function arguments
audit: remove stray newline from audit_log_execve_info() audit_panic() call
audit: remove stray newlines from audit_log_lost messages
audit: include subject in login records
audit: remove superfluous new- prefix in AUDIT_LOGIN messages
audit: allow user processes to log from another PID namespace
audit: anchor all pid references in the initial pid namespace
audit: convert PPIDs to the inital PID namespace.
pid: get pid_t ppid of task in init_pid_ns
audit: rename the misleading audit_get_context() to audit_take_context()
audit: Add generic compat syscall support
audit: Add CONFIG_HAVE_ARCH_AUDITSYSCALL
...
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introduce get_cmdline() for retreiving the value of a processes
proc/self/cmdline value.
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: William Roberts <wroberts@tresys.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
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To increase compiler portability there is <linux/compiler.h> which
provides convenience macros for various gcc constructs. Eg: __weak for
__attribute__((weak)). I've replaced all instances of gcc attributes with
the right macro in the memory management (/mm) subsystem.
[akpm@linux-foundation.org: while-we're-there consistency tweaks]
Signed-off-by: Gideon Israel Dsouza <gidisrael@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Some applications that run on HPC clusters are designed around the
availability of RAM and the overcommit ratio is fine tuned to get the
maximum usage of memory without swapping. With growing memory, the
1%-of-all-RAM grain provided by overcommit_ratio has become too coarse
for these workload (on a 2TB machine it represents no less than 20GB).
This patch adds the new overcommit_kbytes sysctl variable that allow a
much finer grain.
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix nommu build]
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit 8456a648cf44 ("slab: use struct page for slab management") causes
a crash in the LVM2 testsuite on PA-RISC (the crashing test is
fsadm.sh). The testsuite doesn't crash on 3.12, crashes on 3.13-rc1 and
later.
Bad Address (null pointer deref?): Code=15 regs=000000413edd89a0 (Addr=000006202224647d)
CPU: 3 PID: 24008 Comm: loop0 Not tainted 3.13.0-rc6 #5
task: 00000001bf3c0048 ti: 000000413edd8000 task.ti: 000000413edd8000
YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00001000000001101111100100001110 Not tainted
r00-03 000000ff0806f90e 00000000405c8de0 000000004013e6c0 000000413edd83f0
r04-07 00000000405a95e0 0000000000000200 00000001414735f0 00000001bf349e40
r08-11 0000000010fe3d10 0000000000000001 00000040829c7778 000000413efd9000
r12-15 0000000000000000 000000004060d800 0000000010fe3000 0000000010fe3000
r16-19 000000413edd82a0 00000041078ddbc0 0000000000000010 0000000000000001
r20-23 0008f3d0d83a8000 0000000000000000 00000040829c7778 0000000000000080
r24-27 00000001bf349e40 00000001bf349e40 202d66202224640d 00000000405a95e0
r28-31 202d662022246465 000000413edd88f0 000000413edd89a0 0000000000000001
sr00-03 000000000532c000 0000000000000000 0000000000000000 000000000532c000
sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000
IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000401fe42c 00000000401fe430
IIR: 539c0030 ISR: 00000000202d6000 IOR: 000006202224647d
CPU: 3 CR30: 000000413edd8000 CR31: 0000000000000000
ORIG_R28: 00000000405a95e0
IAOQ[0]: vma_interval_tree_iter_first+0x14/0x48
IAOQ[1]: vma_interval_tree_iter_first+0x18/0x48
RP(r2): flush_dcache_page+0x128/0x388
Backtrace:
flush_dcache_page+0x128/0x388
lo_splice_actor+0x90/0x148 [loop]
splice_from_pipe_feed+0xc0/0x1d0
__splice_from_pipe+0xac/0xc0
lo_direct_splice_actor+0x1c/0x70 [loop]
splice_direct_to_actor+0xec/0x228
lo_receive+0xe4/0x298 [loop]
loop_thread+0x478/0x640 [loop]
kthread+0x134/0x168
end_fault_vector+0x20/0x28
xfs_setsize_buftarg+0x0/0x90 [xfs]
Kernel panic - not syncing: Bad Address (null pointer deref?)
Commit 8456a648cf44 changes the page structure so that the slab
subsystem reuses the page->mapping field.
The crash happens in the following way:
* XFS allocates some memory from slab and issues a bio to read data
into it.
* the bio is sent to the loopback device.
* lo_receive creates an actor and calls splice_direct_to_actor.
* lo_splice_actor copies data to the target page.
* lo_splice_actor calls flush_dcache_page because the page may be
mapped by userspace. In that case we need to flush the kernel cache.
* flush_dcache_page asks for the list of userspace mappings, however
that page->mapping field is reused by the slab subsystem for a
different purpose. This causes the crash.
Note that other architectures without coherent caches (sparc, arm, mips)
also call page_mapping from flush_dcache_page, so they may crash in the
same way.
This patch fixes this bug by testing if the page is a slab page in
page_mapping and returning NULL if it is.
The patch also fixes VM_BUG_ON(PageSlab(page)) that could happen in
earlier kernels in the same scenario on architectures without cache
coherence when CONFIG_DEBUG_VM is enabled - so it should be backported
to stable kernels.
In the old kernels, the function page_mapping is placed in
include/linux/mm.h, so you should modify the patch accordingly when
backporting it.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: John David Anglin <dave.anglin@bell.net>]
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Christoph Lameter <cl@linux.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Reviewed-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The same calculation is currently done in three differents places.
Factor that code so future changes has to be made at only one place.
[akpm@linux-foundation.org: uninline vm_commit_limit()]
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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PageSwapCache() is always false when !CONFIG_SWAP, so compiler
properly discard related code. Therefore, we don't need #ifdef explicitly.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Since all architectures have been converted to use vm_unmapped_area(),
there is no remaining use for the free_area_cache.
Signed-off-by: Michel Lespinasse <walken@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When I use several fast SSD to do swap, swapper_space.tree_lock is
heavily contended. This makes each swap partition have one
address_space to reduce the lock contention. There is an array of
address_space for swap. The swap entry type is the index to the array.
In my test with 3 SSD, this increases the swapout throughput 20%.
[akpm@linux-foundation.org: revert unneeded change to __add_to_swap_cache]
Signed-off-by: Shaohua Li <shli@fusionio.com>
Cc: Hugh Dickins <hughd@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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According to akpm, this saves 1/2k text and makes things simple for the
next patch.
Numbers from Minchan:
add/remove: 1/0 grow/shrink: 6/22 up/down: 92/-516 (-424)
function old new delta
page_mapping - 48 +48
do_task_stat 2292 2308 +16
page_remove_rmap 240 248 +8
load_elf_binary 4500 4508 +8
update_queue 532 536 +4
scsi_probe_and_add_lun 2892 2896 +4
lookup_fast 644 648 +4
vcs_read 1040 1036 -4
__ip_route_output_key 1904 1900 -4
ip_route_input_noref 2508 2500 -8
shmem_file_aio_read 784 772 -12
__isolate_lru_page 272 256 -16
shmem_replace_page 708 688 -20
mark_buffer_dirty 228 208 -20
__set_page_dirty_buffers 240 220 -20
__remove_mapping 276 256 -20
update_mmu_cache 500 476 -24
set_page_dirty_balance 92 68 -24
set_page_dirty 172 148 -24
page_evictable 88 64 -24
page_cache_pipe_buf_steal 248 224 -24
clear_page_dirty_for_io 340 316 -24
test_set_page_writeback 400 372 -28
test_clear_page_writeback 516 488 -28
invalidate_inode_page 156 128 -28
page_mkclean 432 400 -32
flush_dcache_page 360 328 -32
__set_page_dirty_nobuffers 324 280 -44
shrink_page_list 2412 2356 -56
Signed-off-by: Shaohua Li <shli@fusionio.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Hugh Dickins <hughd@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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do_mmap_pgoff() rounds up the desired size to the next PAGE_SIZE
multiple, however there was no equivalent code in mm_populate(), which
caused issues.
This could be fixed by introduced the same rounding in mm_populate(),
however I think it's preferable to make do_mmap_pgoff() return populate
as a size rather than as a boolean, so we don't have to duplicate the
size rounding logic in mm_populate().
Signed-off-by: Michel Lespinasse <walken@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
Tested-by: Andy Lutomirski <luto@amacapital.net>
Cc: Greg Ungerer <gregungerer@westnet.com.au>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When creating new mappings using the MAP_POPULATE / MAP_LOCKED flags (or
with MCL_FUTURE in effect), we want to populate the pages within the
newly created vmas. This may take a while as we may have to read pages
from disk, so ideally we want to do this outside of the write-locked
mmap_sem region.
This change introduces mm_populate(), which is used to defer populating
such mappings until after the mmap_sem write lock has been released.
This is implemented as a generalization of the former do_mlock_pages(),
which accomplished the same task but was using during mlock() /
mlockall().
Signed-off-by: Michel Lespinasse <walken@google.com>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Rik van Riel <riel@redhat.com>
Tested-by: Andy Lutomirski <luto@amacapital.net>
Cc: Greg Ungerer <gregungerer@westnet.com.au>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Sync up with Linus' tree to be able to apply Cesar's patch
against newer version of the code.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Without this patch we can get (many) kmem trace events
with call site at krealloc().
This happens because krealloc is calling __krealloc,
which performs the allocation through kmalloc_track_caller.
Since neither krealloc nor __krealloc are marked inline explicitly,
the caller can be traced as being krealloc, which clearly is not
the intended behavior.
This patch allows to get the real caller of krealloc, by creating
an always inlined function __do_krealloc, thus tracing the
call site accurately.
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Glauber Costa <glommer@parallels.com>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
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It should say "@new_size" and not "@size". Correct that.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Cc: trivial@kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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take it to mm/util.c, convert vm_mmap() to use of that one and
take it to mm/util.c as well, convert both sys_mmap_pgoff() to
use of vm_mmap_pgoff()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Stack for a new thread is mapped by userspace code and passed via
sys_clone. This memory is currently seen as anonymous in
/proc/<pid>/maps, which makes it difficult to ascertain which mappings
are being used for thread stacks. This patch uses the individual task
stack pointers to determine which vmas are actually thread stacks.
For a multithreaded program like the following:
#include <pthread.h>
void *thread_main(void *foo)
{
while(1);
}
int main()
{
pthread_t t;
pthread_create(&t, NULL, thread_main, NULL);
pthread_join(t, NULL);
}
proc/PID/maps looks like the following:
00400000-00401000 r-xp 00000000 fd:0a 3671804 /home/siddhesh/a.out
00600000-00601000 rw-p 00000000 fd:0a 3671804 /home/siddhesh/a.out
019ef000-01a10000 rw-p 00000000 00:00 0 [heap]
7f8a44491000-7f8a44492000 ---p 00000000 00:00 0
7f8a44492000-7f8a44c92000 rw-p 00000000 00:00 0
7f8a44c92000-7f8a44e3d000 r-xp 00000000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a44e3d000-7f8a4503d000 ---p 001ab000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a4503d000-7f8a45041000 r--p 001ab000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a45041000-7f8a45043000 rw-p 001af000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a45043000-7f8a45048000 rw-p 00000000 00:00 0
7f8a45048000-7f8a4505f000 r-xp 00000000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a4505f000-7f8a4525e000 ---p 00017000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a4525e000-7f8a4525f000 r--p 00016000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a4525f000-7f8a45260000 rw-p 00017000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a45260000-7f8a45264000 rw-p 00000000 00:00 0
7f8a45264000-7f8a45286000 r-xp 00000000 fd:00 2097348 /lib64/ld-2.14.90.so
7f8a45457000-7f8a4545a000 rw-p 00000000 00:00 0
7f8a45484000-7f8a45485000 rw-p 00000000 00:00 0
7f8a45485000-7f8a45486000 r--p 00021000 fd:00 2097348 /lib64/ld-2.14.90.so
7f8a45486000-7f8a45487000 rw-p 00022000 fd:00 2097348 /lib64/ld-2.14.90.so
7f8a45487000-7f8a45488000 rw-p 00000000 00:00 0
7fff6273b000-7fff6275c000 rw-p 00000000 00:00 0 [stack]
7fff627ff000-7fff62800000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
Here, one could guess that 7f8a44492000-7f8a44c92000 is a stack since
the earlier vma that has no permissions (7f8a44e3d000-7f8a4503d000) but
that is not always a reliable way to find out which vma is a thread
stack. Also, /proc/PID/maps and /proc/PID/task/TID/maps has the same
content.
With this patch in place, /proc/PID/task/TID/maps are treated as 'maps
as the task would see it' and hence, only the vma that that task uses as
stack is marked as [stack]. All other 'stack' vmas are marked as
anonymous memory. /proc/PID/maps acts as a thread group level view,
where all thread stack vmas are marked as [stack:TID] where TID is the
process ID of the task that uses that vma as stack, while the process
stack is marked as [stack].
So /proc/PID/maps will look like this:
00400000-00401000 r-xp 00000000 fd:0a 3671804 /home/siddhesh/a.out
00600000-00601000 rw-p 00000000 fd:0a 3671804 /home/siddhesh/a.out
019ef000-01a10000 rw-p 00000000 00:00 0 [heap]
7f8a44491000-7f8a44492000 ---p 00000000 00:00 0
7f8a44492000-7f8a44c92000 rw-p 00000000 00:00 0 [stack:1442]
7f8a44c92000-7f8a44e3d000 r-xp 00000000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a44e3d000-7f8a4503d000 ---p 001ab000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a4503d000-7f8a45041000 r--p 001ab000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a45041000-7f8a45043000 rw-p 001af000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a45043000-7f8a45048000 rw-p 00000000 00:00 0
7f8a45048000-7f8a4505f000 r-xp 00000000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a4505f000-7f8a4525e000 ---p 00017000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a4525e000-7f8a4525f000 r--p 00016000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a4525f000-7f8a45260000 rw-p 00017000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a45260000-7f8a45264000 rw-p 00000000 00:00 0
7f8a45264000-7f8a45286000 r-xp 00000000 fd:00 2097348 /lib64/ld-2.14.90.so
7f8a45457000-7f8a4545a000 rw-p 00000000 00:00 0
7f8a45484000-7f8a45485000 rw-p 00000000 00:00 0
7f8a45485000-7f8a45486000 r--p 00021000 fd:00 2097348 /lib64/ld-2.14.90.so
7f8a45486000-7f8a45487000 rw-p 00022000 fd:00 2097348 /lib64/ld-2.14.90.so
7f8a45487000-7f8a45488000 rw-p 00000000 00:00 0
7fff6273b000-7fff6275c000 rw-p 00000000 00:00 0 [stack]
7fff627ff000-7fff62800000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
Thus marking all vmas that are used as stacks by the threads in the
thread group along with the process stack. The task level maps will
however like this:
00400000-00401000 r-xp 00000000 fd:0a 3671804 /home/siddhesh/a.out
00600000-00601000 rw-p 00000000 fd:0a 3671804 /home/siddhesh/a.out
019ef000-01a10000 rw-p 00000000 00:00 0 [heap]
7f8a44491000-7f8a44492000 ---p 00000000 00:00 0
7f8a44492000-7f8a44c92000 rw-p 00000000 00:00 0 [stack]
7f8a44c92000-7f8a44e3d000 r-xp 00000000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a44e3d000-7f8a4503d000 ---p 001ab000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a4503d000-7f8a45041000 r--p 001ab000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a45041000-7f8a45043000 rw-p 001af000 fd:00 2097482 /lib64/libc-2.14.90.so
7f8a45043000-7f8a45048000 rw-p 00000000 00:00 0
7f8a45048000-7f8a4505f000 r-xp 00000000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a4505f000-7f8a4525e000 ---p 00017000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a4525e000-7f8a4525f000 r--p 00016000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a4525f000-7f8a45260000 rw-p 00017000 fd:00 2099938 /lib64/libpthread-2.14.90.so
7f8a45260000-7f8a45264000 rw-p 00000000 00:00 0
7f8a45264000-7f8a45286000 r-xp 00000000 fd:00 2097348 /lib64/ld-2.14.90.so
7f8a45457000-7f8a4545a000 rw-p 00000000 00:00 0
7f8a45484000-7f8a45485000 rw-p 00000000 00:00 0
7f8a45485000-7f8a45486000 r--p 00021000 fd:00 2097348 /lib64/ld-2.14.90.so
7f8a45486000-7f8a45487000 rw-p 00022000 fd:00 2097348 /lib64/ld-2.14.90.so
7f8a45487000-7f8a45488000 rw-p 00000000 00:00 0
7fff6273b000-7fff6275c000 rw-p 00000000 00:00 0
7fff627ff000-7fff62800000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
where only the vma that is being used as a stack by *that* task is
marked as [stack].
Analogous changes have been made to /proc/PID/smaps,
/proc/PID/numa_maps, /proc/PID/task/TID/smaps and
/proc/PID/task/TID/numa_maps. Relevant snippets from smaps and
numa_maps:
[siddhesh@localhost ~ ]$ pgrep a.out
1441
[siddhesh@localhost ~ ]$ cat /proc/1441/smaps | grep "\[stack"
7f8a44492000-7f8a44c92000 rw-p 00000000 00:00 0 [stack:1442]
7fff6273b000-7fff6275c000 rw-p 00000000 00:00 0 [stack]
[siddhesh@localhost ~ ]$ cat /proc/1441/task/1442/smaps | grep "\[stack"
7f8a44492000-7f8a44c92000 rw-p 00000000 00:00 0 [stack]
[siddhesh@localhost ~ ]$ cat /proc/1441/task/1441/smaps | grep "\[stack"
7fff6273b000-7fff6275c000 rw-p 00000000 00:00 0 [stack]
[siddhesh@localhost ~ ]$ cat /proc/1441/numa_maps | grep "stack"
7f8a44492000 default stack:1442 anon=2 dirty=2 N0=2
7fff6273a000 default stack anon=3 dirty=3 N0=3
[siddhesh@localhost ~ ]$ cat /proc/1441/task/1442/numa_maps | grep "stack"
7f8a44492000 default stack anon=2 dirty=2 N0=2
[siddhesh@localhost ~ ]$ cat /proc/1441/task/1441/numa_maps | grep "stack"
7fff6273a000 default stack anon=3 dirty=3 N0=3
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix build]
Signed-off-by: Siddhesh Poyarekar <siddhesh.poyarekar@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jamie Lokier <jamie@shareable.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The files changed within are only using the EXPORT_SYMBOL
macro variants. They are not using core modular infrastructure
and hence don't need module.h but only the export.h header.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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When I was reading nommu code, I found that it handles the vma list/tree
in an unusual way. IIUC, because there can be more than one
identical/overrapped vmas in the list/tree, it sorts the tree more
strictly and does a linear search on the tree. But it doesn't applied to
the list (i.e. the list could be constructed in a different order than
the tree so that we can't use the list when finding the first vma in that
order).
Since inserting/sorting a vma in the tree and link is done at the same
time, we can easily construct both of them in the same order. And linear
searching on the tree could be more costly than doing it on the list, it
can be converted to use the list.
Also, after the commit 297c5eee3724 ("mm: make the vma list be doubly
linked") made the list be doubly linked, there were a couple of code need
to be fixed to construct the list properly.
Patch 1/6 is a preparation. It maintains the list sorted same as the tree
and construct doubly-linked list properly. Patch 2/6 is a simple
optimization for the vma deletion. Patch 3/6 and 4/6 convert tree
traversal to list traversal and the rest are simple fixes and cleanups.
This patch:
@vma added into @mm should be sorted by start addr, end addr and VMA
struct addr in that order because we may get identical VMAs in the @mm.
However this was true only for the rbtree, not for the list.
This patch fixes this by remembering 'rb_prev' during the tree traversal
like find_vma_prepare() does and linking the @vma via __vma_link_list().
After this patch, we can iterate the whole VMAs in correct order simply by
using @mm->mmap list.
[akpm@linux-foundation.org: avoid duplicating __vma_link_list()]
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
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This is a nasty and error prone API. It is no longer used, remove it.
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
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This function is used by KVM to pin process's page in the atomic context.
Define the 'weak' function to avoid other architecture not support it
Acked-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Use memdup_user when user data is immediately copied into the
allocated region.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression from,to,size,flag;
position p;
identifier l1,l2;
@@
- to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+ to = memdup_user(from,size);
if (
- to==NULL
+ IS_ERR(to)
|| ...) {
<+... when != goto l1;
- -ENOMEM
+ PTR_ERR(to)
...+>
}
- if (copy_from_user(to, from, size) != 0) {
- <+... when != goto l2;
- -EFAULT
- ...+>
- }
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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As suggested by Linus, introduce a kern_ptr_validate() helper that does some
sanity checks to make sure a pointer is a valid kernel pointer. This is a
preparational step for fixing SLUB kmem_ptr_validate().
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Nick Piggin <npiggin@suse.de>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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get_unmapped_area() is unnecessary for NOMMU as no-one calls it.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Move sys_mmap_pgoff() from mm/util.c to mm/mmap.c and mm/nommu.c,
where we'd expect to find such code: especially now that it contains
the MAP_HUGETLB handling. Revert mm/util.c to how it was in 2.6.32.
This patch just ignores MAP_HUGETLB in the nommu case, as in 2.6.32,
whereas 2.6.33-rc2 reported -ENOSYS. Perhaps validate_mmap_request()
should reject it with -EINVAL? Add that later if necessary.
Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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New helper - sys_mmap_pgoff(); switch syscalls to using it.
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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'slub/fixes' into for-linus
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As suggested by Alan Cox, document the fact that kzfree() can zero out a great
deal more memory than the what the user requested from kmalloc().
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
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