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Changes in 4.4.144
KVM/Eventfd: Avoid crash when assign and deassign specific eventfd in parallel.
x86/MCE: Remove min interval polling limitation
fat: fix memory allocation failure handling of match_strdup()
ALSA: rawmidi: Change resized buffers atomically
ARC: Fix CONFIG_SWAP
ARC: mm: allow mprotect to make stack mappings executable
mm: memcg: fix use after free in mem_cgroup_iter()
ipv4: Return EINVAL when ping_group_range sysctl doesn't map to user ns
ipv6: fix useless rol32 call on hash
lib/rhashtable: consider param->min_size when setting initial table size
net/ipv4: Set oif in fib_compute_spec_dst
net: phy: fix flag masking in __set_phy_supported
ptp: fix missing break in switch
tg3: Add higher cpu clock for 5762.
net: Don't copy pfmemalloc flag in __copy_skb_header()
skbuff: Unconditionally copy pfmemalloc in __skb_clone()
xhci: Fix perceived dead host due to runtime suspend race with event handler
x86/paravirt: Make native_save_fl() extern inline
x86/cpufeatures: Add CPUID_7_EDX CPUID leaf
x86/cpufeatures: Add Intel feature bits for Speculation Control
x86/cpufeatures: Add AMD feature bits for Speculation Control
x86/msr: Add definitions for new speculation control MSRs
x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown
x86/cpufeature: Blacklist SPEC_CTRL/PRED_CMD on early Spectre v2 microcodes
x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support
x86/cpufeatures: Clean up Spectre v2 related CPUID flags
x86/cpuid: Fix up "virtual" IBRS/IBPB/STIBP feature bits on Intel
x86/pti: Mark constant arrays as __initconst
x86/asm/entry/32: Simplify pushes of zeroed pt_regs->REGs
x86/entry/64/compat: Clear registers for compat syscalls, to reduce speculation attack surface
x86/speculation: Update Speculation Control microcode blacklist
x86/speculation: Correct Speculation Control microcode blacklist again
x86/speculation: Clean up various Spectre related details
x86/speculation: Fix up array_index_nospec_mask() asm constraint
x86/speculation: Add <asm/msr-index.h> dependency
x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend
x86/mm: Factor out LDT init from context init
x86/mm: Give each mm TLB flush generation a unique ID
x86/speculation: Use Indirect Branch Prediction Barrier in context switch
x86/spectre_v2: Don't check microcode versions when running under hypervisors
x86/speculation: Use IBRS if available before calling into firmware
x86/speculation: Move firmware_restrict_branch_speculation_*() from C to CPP
x86/speculation: Remove Skylake C2 from Speculation Control microcode blacklist
selftest/seccomp: Fix the flag name SECCOMP_FILTER_FLAG_TSYNC
selftest/seccomp: Fix the seccomp(2) signature
xen: set cpu capabilities from xen_start_kernel()
x86/amd: don't set X86_BUG_SYSRET_SS_ATTRS when running under Xen
x86/nospec: Simplify alternative_msr_write()
x86/bugs: Concentrate bug detection into a separate function
x86/bugs: Concentrate bug reporting into a separate function
x86/bugs: Read SPEC_CTRL MSR during boot and re-use reserved bits
x86/bugs, KVM: Support the combination of guest and host IBRS
x86/cpu: Rename Merrifield2 to Moorefield
x86/cpu/intel: Add Knights Mill to Intel family
x86/bugs: Expose /sys/../spec_store_bypass
x86/cpufeatures: Add X86_FEATURE_RDS
x86/bugs: Provide boot parameters for the spec_store_bypass_disable mitigation
x86/bugs/intel: Set proper CPU features and setup RDS
x86/bugs: Whitelist allowed SPEC_CTRL MSR values
x86/bugs/AMD: Add support to disable RDS on Fam[15, 16, 17]h if requested
x86/speculation: Create spec-ctrl.h to avoid include hell
prctl: Add speculation control prctls
x86/process: Optimize TIF checks in __switch_to_xtra()
x86/process: Correct and optimize TIF_BLOCKSTEP switch
x86/process: Optimize TIF_NOTSC switch
x86/process: Allow runtime control of Speculative Store Bypass
x86/speculation: Add prctl for Speculative Store Bypass mitigation
nospec: Allow getting/setting on non-current task
proc: Provide details on speculation flaw mitigations
seccomp: Enable speculation flaw mitigations
prctl: Add force disable speculation
seccomp: Use PR_SPEC_FORCE_DISABLE
seccomp: Add filter flag to opt-out of SSB mitigation
seccomp: Move speculation migitation control to arch code
x86/speculation: Make "seccomp" the default mode for Speculative Store Bypass
x86/bugs: Rename _RDS to _SSBD
proc: Use underscores for SSBD in 'status'
Documentation/spec_ctrl: Do some minor cleanups
x86/bugs: Fix __ssb_select_mitigation() return type
x86/bugs: Make cpu_show_common() static
x86/bugs: Fix the parameters alignment and missing void
x86/cpu: Make alternative_msr_write work for 32-bit code
x86/speculation: Use synthetic bits for IBRS/IBPB/STIBP
x86/cpufeatures: Disentangle MSR_SPEC_CTRL enumeration from IBRS
x86/cpufeatures: Disentangle SSBD enumeration
x86/cpu/AMD: Fix erratum 1076 (CPB bit)
x86/cpufeatures: Add FEATURE_ZEN
x86/speculation: Handle HT correctly on AMD
x86/bugs, KVM: Extend speculation control for VIRT_SPEC_CTRL
x86/speculation: Add virtualized speculative store bypass disable support
x86/speculation: Rework speculative_store_bypass_update()
x86/bugs: Unify x86_spec_ctrl_{set_guest, restore_host}
x86/bugs: Expose x86_spec_ctrl_base directly
x86/bugs: Remove x86_spec_ctrl_set()
x86/bugs: Rework spec_ctrl base and mask logic
x86/speculation, KVM: Implement support for VIRT_SPEC_CTRL/LS_CFG
x86/bugs: Rename SSBD_NO to SSB_NO
x86/xen: Add call of speculative_store_bypass_ht_init() to PV paths
x86/cpu: Re-apply forced caps every time CPU caps are re-read
block: do not use interruptible wait anywhere
clk: tegra: Fix PLL_U post divider and initial rate on Tegra30
ubi: Introduce vol_ignored()
ubi: Rework Fastmap attach base code
ubi: Be more paranoid while seaching for the most recent Fastmap
ubi: Fix races around ubi_refill_pools()
ubi: Fix Fastmap's update_vol()
ubi: fastmap: Erase outdated anchor PEBs during attach
Linux 4.4.144
Change-Id: I548db9c2be75c4d70add49f6e8238534f55289a7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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Changes in 4.4.143
compiler, clang: suppress warning for unused static inline functions
compiler, clang: properly override 'inline' for clang
compiler, clang: always inline when CONFIG_OPTIMIZE_INLINING is disabled
compiler-gcc.h: Add __attribute__((gnu_inline)) to all inline declarations
x86/asm: Add _ASM_ARG* constants for argument registers to <asm/asm.h>
Revert "sit: reload iphdr in ipip6_rcv"
ocfs2: subsystem.su_mutex is required while accessing the item->ci_parent
bcm63xx_enet: correct clock usage
bcm63xx_enet: do not write to random DMA channel on BCM6345
crypto: crypto4xx - remove bad list_del
crypto: crypto4xx - fix crypto4xx_build_pdr, crypto4xx_build_sdr leak
atm: zatm: Fix potential Spectre v1
net: dccp: avoid crash in ccid3_hc_rx_send_feedback()
net: dccp: switch rx_tstamp_last_feedback to monotonic clock
net/mlx5: Fix incorrect raw command length parsing
net: sungem: fix rx checksum support
qed: Limit msix vectors in kdump kernel to the minimum required count.
r8152: napi hangup fix after disconnect
tcp: fix Fast Open key endianness
tcp: prevent bogus FRTO undos with non-SACK flows
vhost_net: validate sock before trying to put its fd
net_sched: blackhole: tell upper qdisc about dropped packets
net/mlx5: Fix command interface race in polling mode
net: cxgb3_main: fix potential Spectre v1
rtlwifi: rtl8821ae: fix firmware is not ready to run
MIPS: Call dump_stack() from show_regs()
MIPS: Use async IPIs for arch_trigger_cpumask_backtrace()
netfilter: ebtables: reject non-bridge targets
KEYS: DNS: fix parsing multiple options
rds: avoid unenecessary cong_update in loop transport
net/nfc: Avoid stalls when nfc_alloc_send_skb() returned NULL.
Linux 4.4.143
Change-Id: I752820c81a2d7071a9093c049fb0b6db95b1f0a1
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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* refs/heads/tmp-a749771
Linux 4.4.194
net_sched: let qdisc_put() accept NULL pointer
ARC: export "abort" for modules
media: technisat-usb2: break out of loop at end of buffer
floppy: fix usercopy direction
keys: Fix missing null pointer check in request_key_auth_describe()
dmaengine: ti: omap-dma: Add cleanup in omap_dma_probe()
net: seeq: Fix the function used to release some memory in an error handling path
tools/power turbostat: fix buffer overrun
sky2: Disable MSI on yet another ASUS boards (P6Xxxx)
cifs: Use kzfree() to zero out the password
cifs: set domainName when a domain-key is used in multiuser
NFSv2: Fix write regression
NFSv2: Fix eof handling
netfilter: nf_conntrack_ftp: Fix debug output
x86/apic: Fix arch_dynirq_lower_bound() bug for DT enabled machines
r8152: Set memory to all 0xFFs on failed reg reads
ARM: 8874/1: mm: only adjust sections of valid mm structures
Kconfig: Fix the reference to the IDT77105 Phy driver in the description of ATM_NICSTAR_USE_IDT77105
NFS: Fix initialisation of I/O result struct in nfs_pgio_rpcsetup
NFSv4: Fix return values for nfs4_file_open()
s390/bpf: use 32-bit index for tail calls
ARM: OMAP2+: Fix omap4 errata warning on other SoCs
s390/bpf: fix lcgr instruction encoding
mwifiex: Fix three heap overflow at parsing element in cfg80211_ap_settings
tty/serial: atmel: reschedule TX after RX was started
serial: sprd: correct the wrong sequence of arguments
KVM: coalesced_mmio: add bounds checking
xen-netfront: do not assume sk_buff_head list is empty in error handling
x86/boot: Add missing bootparam that breaks boot on some platforms
media: tm6000: double free if usb disconnect while streaming
USB: usbcore: Fix slab-out-of-bounds bug during device reset
ARC: configs: Remove CONFIG_INITRAMFS_SOURCE from defconfigs
MIPS: netlogic: xlr: Remove erroneous check in nlm_fmn_send()
x86/build: Add -Wnoaddress-of-packed-member to REALMODE_CFLAGS, to silence GCC9 build warning
crypto: talitos - check data blocksize in ablkcipher.
crypto: talitos - check AES key size
driver core: Fix use-after-free and double free on glue directory
clk: rockchip: Don't yell about bad mmc phases when getting
MIPS: VDSO: Use same -m%-float cflag as the kernel proper
MIPS: VDSO: Prevent use of smp_processor_id()
KVM: nVMX: handle page fault in vmread
KVM: x86: work around leak of uninitialized stack contents
KVM: s390: Do not leak kernel stack data in the KVM_S390_INTERRUPT ioctl
genirq: Prevent NULL pointer dereference in resend_irqs()
Btrfs: fix assertion failure during fsync and use of stale transaction
Revert "MIPS: SiByte: Enable swiotlb for SWARM, LittleSur and BigSur"
tun: fix use-after-free when register netdev failed
tipc: add NULL pointer check before calling kfree_rcu
tcp: fix tcp_ecn_withdraw_cwr() to clear TCP_ECN_QUEUE_CWR
sctp: use transport pf_retrans in sctp_do_8_2_transport_strike
sctp: Fix the link time qualifier of 'sctp_ctrlsock_exit()'
sch_hhf: ensure quantum and hhf_non_hh_weight are non-zero
net: Fix null de-reference of device refcount
isdn/capi: check message length in capi_write()
ipv6: Fix the link time qualifier of 'ping_v6_proc_exit_net()'
cdc_ether: fix rndis support for Mediatek based smartphones
bridge/mdb: remove wrong use of NLM_F_MULTI
Change-Id: I950778c771159febb721a4ebc2656c57ef40ad83
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.194
bridge/mdb: remove wrong use of NLM_F_MULTI
cdc_ether: fix rndis support for Mediatek based smartphones
ipv6: Fix the link time qualifier of 'ping_v6_proc_exit_net()'
isdn/capi: check message length in capi_write()
net: Fix null de-reference of device refcount
sch_hhf: ensure quantum and hhf_non_hh_weight are non-zero
sctp: Fix the link time qualifier of 'sctp_ctrlsock_exit()'
sctp: use transport pf_retrans in sctp_do_8_2_transport_strike
tcp: fix tcp_ecn_withdraw_cwr() to clear TCP_ECN_QUEUE_CWR
tipc: add NULL pointer check before calling kfree_rcu
tun: fix use-after-free when register netdev failed
Revert "MIPS: SiByte: Enable swiotlb for SWARM, LittleSur and BigSur"
Btrfs: fix assertion failure during fsync and use of stale transaction
genirq: Prevent NULL pointer dereference in resend_irqs()
KVM: s390: Do not leak kernel stack data in the KVM_S390_INTERRUPT ioctl
KVM: x86: work around leak of uninitialized stack contents
KVM: nVMX: handle page fault in vmread
MIPS: VDSO: Prevent use of smp_processor_id()
MIPS: VDSO: Use same -m%-float cflag as the kernel proper
clk: rockchip: Don't yell about bad mmc phases when getting
driver core: Fix use-after-free and double free on glue directory
crypto: talitos - check AES key size
crypto: talitos - check data blocksize in ablkcipher.
x86/build: Add -Wnoaddress-of-packed-member to REALMODE_CFLAGS, to silence GCC9 build warning
MIPS: netlogic: xlr: Remove erroneous check in nlm_fmn_send()
ARC: configs: Remove CONFIG_INITRAMFS_SOURCE from defconfigs
USB: usbcore: Fix slab-out-of-bounds bug during device reset
media: tm6000: double free if usb disconnect while streaming
x86/boot: Add missing bootparam that breaks boot on some platforms
xen-netfront: do not assume sk_buff_head list is empty in error handling
KVM: coalesced_mmio: add bounds checking
serial: sprd: correct the wrong sequence of arguments
tty/serial: atmel: reschedule TX after RX was started
mwifiex: Fix three heap overflow at parsing element in cfg80211_ap_settings
s390/bpf: fix lcgr instruction encoding
ARM: OMAP2+: Fix omap4 errata warning on other SoCs
s390/bpf: use 32-bit index for tail calls
NFSv4: Fix return values for nfs4_file_open()
NFS: Fix initialisation of I/O result struct in nfs_pgio_rpcsetup
Kconfig: Fix the reference to the IDT77105 Phy driver in the description of ATM_NICSTAR_USE_IDT77105
ARM: 8874/1: mm: only adjust sections of valid mm structures
r8152: Set memory to all 0xFFs on failed reg reads
x86/apic: Fix arch_dynirq_lower_bound() bug for DT enabled machines
netfilter: nf_conntrack_ftp: Fix debug output
NFSv2: Fix eof handling
NFSv2: Fix write regression
cifs: set domainName when a domain-key is used in multiuser
cifs: Use kzfree() to zero out the password
sky2: Disable MSI on yet another ASUS boards (P6Xxxx)
tools/power turbostat: fix buffer overrun
net: seeq: Fix the function used to release some memory in an error handling path
dmaengine: ti: omap-dma: Add cleanup in omap_dma_probe()
keys: Fix missing null pointer check in request_key_auth_describe()
floppy: fix usercopy direction
media: technisat-usb2: break out of loop at end of buffer
ARC: export "abort" for modules
net_sched: let qdisc_put() accept NULL pointer
Linux 4.4.194
Change-Id: Ia27dd36133c3294c756d2376357572325afcd6fb
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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Change
a90118c445cc x86/boot: Save fields explicitly, zero out everything else
modified the way boot parameters were saved on x86. When this was
backported, e820_table didn't exists, and that change was dropped.
Unfortunately, e820_table did exist, it was just named e820_map
in this kernel version.
This was breaking booting on a Supermicro Super Server/A2SDi-2C-HLN4F
with a Denverton CPU. Adding e820_map to the saved boot params table
fixes the issue.
Cc: <stable@vger.kernel.org> # 4.9.x, 4.4.x
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-6da3fbc
Linux 4.4.191
x86/ptrace: fix up botched merge of spectrev1 fix
mac80211: fix possible sta leak
Revert "cfg80211: fix processing world regdomain when non modular"
VMCI: Release resource if the work is already queued
stm class: Fix a double free of stm_source_device
mmc: core: Fix init of SD cards reporting an invalid VDD range
mmc: sdhci-of-at91: add quirk for broken HS200
uprobes/x86: Fix detection of 32-bit user mode
ptrace,x86: Make user_64bit_mode() available to 32-bit builds
USB: storage: ums-realtek: Whitelist auto-delink support
USB: storage: ums-realtek: Update module parameter description for auto_delink_en
usb: host: ohci: fix a race condition between shutdown and irq
USB: cdc-wdm: fix race between write and disconnect due to flag abuse
usb-storage: Add new JMS567 revision to unusual_devs
x86/apic: Include the LDR when clearing out APIC registers
x86/apic: Do not initialize LDR and DFR for bigsmp
KVM: x86: Don't update RIP or do single-step on faulting emulation
ALSA: seq: Fix potential concurrent access to the deleted pool
tcp: make sure EPOLLOUT wont be missed
ALSA: usb-audio: Fix an OOB bug in parse_audio_mixer_unit
ALSA: usb-audio: Fix a stack buffer overflow bug in check_input_term
tcp: fix tcp_rtx_queue_tail in case of empty retransmit queue
watchdog: bcm2835_wdt: Fix module autoload
tools: hv: fix KVP and VSS daemons exit code
usb: host: fotg2: restart hcd after port reset
usb: gadget: composite: Clear "suspended" on reset/disconnect
dmaengine: ste_dma40: fix unneeded variable warning
scsi: ufs: Fix NULL pointer dereference in ufshcd_config_vreg_hpm()
x86/CPU/AMD: Clear RDRAND CPUID bit on AMD family 15h/16h
x86/pm: Introduce quirk framework to save/restore extra MSR registers around suspend/resume
Revert "perf test 6: Fix missing kvm module load for s390"
netfilter: conntrack: Use consistent ct id hash calculation
netfilter: ctnetlink: don't use conntrack/expect object addresses as id
inet: switch IP ID generator to siphash
siphash: implement HalfSipHash1-3 for hash tables
siphash: add cryptographically secure PRF
vhost: scsi: add weight support
vhost_net: fix possible infinite loop
vhost: introduce vhost_exceeds_weight()
vhost_net: introduce vhost_exceeds_weight()
vhost_net: use packet weight for rx handler, too
vhost-net: set packet weight of tx polling to 2 * vq size
net: arc_emac: fix koops caused by sk_buff free
GFS2: don't set rgrp gl_object until it's inserted into rgrp tree
cgroup: Disable IRQs while holding css_set_lock
dm table: fix invalid memory accesses with too high sector number
dm space map metadata: fix missing store of apply_bops() return value
dm btree: fix order of block initialization in btree_split_beneath
x86/boot: Fix boot regression caused by bootparam sanitizing
x86/boot: Save fields explicitly, zero out everything else
x86/apic: Handle missing global clockevent gracefully
x86/retpoline: Don't clobber RFLAGS during CALL_NOSPEC on i386
userfaultfd_release: always remove uffd flags and clear vm_userfaultfd_ctx
Revert "dm bufio: fix deadlock with loop device"
HID: wacom: correct misreported EKR ring values
selftests: kvm: Adding config fragments
libata: add SG safety checks in SFF pio transfers
net: hisilicon: Fix dma_map_single failed on arm64
net: hisilicon: fix hip04-xmit never return TX_BUSY
net: hisilicon: make hip04_tx_reclaim non-reentrant
net: cxgb3_main: Fix a resource leak in a error path in 'init_one()'
NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim()
can: peak_usb: force the string buffer NULL-terminated
can: sja1000: force the string buffer NULL-terminated
perf bench numa: Fix cpu0 binding
isdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack
isdn: mISDN: hfcsusb: Fix possible null-pointer dereferences in start_isoc_chain()
net: usb: qmi_wwan: Add the BroadMobi BM818 card
ASoC: ti: davinci-mcasp: Correct slot_width posed constraint
st_nci_hci_connectivity_event_received: null check the allocation
st21nfca_connectivity_event_received: null check the allocation
can: dev: call netif_carrier_off() in register_candev()
bonding: Force slave speed check after link state recovery for 802.3ad
netfilter: ebtables: fix a memory leak bug in compat
MIPS: kernel: only use i8253 clocksource with periodic clockevent
HID: Add 044f:b320 ThrustMaster, Inc. 2 in 1 DT
ANDROID: sched: Disallow WALT with CFS bandwidth control
ANDROID: fiq_debugger: remove
ANDROID: Add a tracepoint for mapping inode to full path
Conflicts:
drivers/scsi/ufs/ufshcd.c
drivers/staging/android/fiq_debugger/fiq_debugger.c
sound/usb/mixer.c
Change-Id: I95d42e2ce37dd5d32e1737f701976079c43b7501
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.191
HID: Add 044f:b320 ThrustMaster, Inc. 2 in 1 DT
MIPS: kernel: only use i8253 clocksource with periodic clockevent
netfilter: ebtables: fix a memory leak bug in compat
bonding: Force slave speed check after link state recovery for 802.3ad
can: dev: call netif_carrier_off() in register_candev()
st21nfca_connectivity_event_received: null check the allocation
st_nci_hci_connectivity_event_received: null check the allocation
ASoC: ti: davinci-mcasp: Correct slot_width posed constraint
net: usb: qmi_wwan: Add the BroadMobi BM818 card
isdn: mISDN: hfcsusb: Fix possible null-pointer dereferences in start_isoc_chain()
isdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack
perf bench numa: Fix cpu0 binding
can: sja1000: force the string buffer NULL-terminated
can: peak_usb: force the string buffer NULL-terminated
NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim()
net: cxgb3_main: Fix a resource leak in a error path in 'init_one()'
net: hisilicon: make hip04_tx_reclaim non-reentrant
net: hisilicon: fix hip04-xmit never return TX_BUSY
net: hisilicon: Fix dma_map_single failed on arm64
libata: add SG safety checks in SFF pio transfers
selftests: kvm: Adding config fragments
HID: wacom: correct misreported EKR ring values
Revert "dm bufio: fix deadlock with loop device"
userfaultfd_release: always remove uffd flags and clear vm_userfaultfd_ctx
x86/retpoline: Don't clobber RFLAGS during CALL_NOSPEC on i386
x86/apic: Handle missing global clockevent gracefully
x86/boot: Save fields explicitly, zero out everything else
x86/boot: Fix boot regression caused by bootparam sanitizing
dm btree: fix order of block initialization in btree_split_beneath
dm space map metadata: fix missing store of apply_bops() return value
dm table: fix invalid memory accesses with too high sector number
cgroup: Disable IRQs while holding css_set_lock
GFS2: don't set rgrp gl_object until it's inserted into rgrp tree
net: arc_emac: fix koops caused by sk_buff free
vhost-net: set packet weight of tx polling to 2 * vq size
vhost_net: use packet weight for rx handler, too
vhost_net: introduce vhost_exceeds_weight()
vhost: introduce vhost_exceeds_weight()
vhost_net: fix possible infinite loop
vhost: scsi: add weight support
siphash: add cryptographically secure PRF
siphash: implement HalfSipHash1-3 for hash tables
inet: switch IP ID generator to siphash
netfilter: ctnetlink: don't use conntrack/expect object addresses as id
netfilter: conntrack: Use consistent ct id hash calculation
Revert "perf test 6: Fix missing kvm module load for s390"
x86/pm: Introduce quirk framework to save/restore extra MSR registers around suspend/resume
x86/CPU/AMD: Clear RDRAND CPUID bit on AMD family 15h/16h
scsi: ufs: Fix NULL pointer dereference in ufshcd_config_vreg_hpm()
dmaengine: ste_dma40: fix unneeded variable warning
usb: gadget: composite: Clear "suspended" on reset/disconnect
usb: host: fotg2: restart hcd after port reset
tools: hv: fix KVP and VSS daemons exit code
watchdog: bcm2835_wdt: Fix module autoload
tcp: fix tcp_rtx_queue_tail in case of empty retransmit queue
ALSA: usb-audio: Fix a stack buffer overflow bug in check_input_term
ALSA: usb-audio: Fix an OOB bug in parse_audio_mixer_unit
tcp: make sure EPOLLOUT wont be missed
ALSA: seq: Fix potential concurrent access to the deleted pool
KVM: x86: Don't update RIP or do single-step on faulting emulation
x86/apic: Do not initialize LDR and DFR for bigsmp
x86/apic: Include the LDR when clearing out APIC registers
usb-storage: Add new JMS567 revision to unusual_devs
USB: cdc-wdm: fix race between write and disconnect due to flag abuse
usb: host: ohci: fix a race condition between shutdown and irq
USB: storage: ums-realtek: Update module parameter description for auto_delink_en
USB: storage: ums-realtek: Whitelist auto-delink support
ptrace,x86: Make user_64bit_mode() available to 32-bit builds
uprobes/x86: Fix detection of 32-bit user mode
mmc: sdhci-of-at91: add quirk for broken HS200
mmc: core: Fix init of SD cards reporting an invalid VDD range
stm class: Fix a double free of stm_source_device
VMCI: Release resource if the work is already queued
Revert "cfg80211: fix processing world regdomain when non modular"
mac80211: fix possible sta leak
x86/ptrace: fix up botched merge of spectrev1 fix
Linux 4.4.191
Change-Id: I9c9b3ec748ba2977b818fd569d1788ed5da295b2
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit e27c310af5c05cf876d9cad006928076c27f54d4 ]
In its current form, user_64bit_mode() can only be used when CONFIG_X86_64
is selected. This implies that code built with CONFIG_X86_64=n cannot use
it. If a piece of code needs to be built for both CONFIG_X86_64=y and
CONFIG_X86_64=n and wants to use this function, it needs to wrap it in
an #ifdef/#endif; potentially, in multiple places.
This can be easily avoided with a single #ifdef/#endif pair within
user_64bit_mode() itself.
Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: ricardo.neri@intel.com
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: Qiaowei Ren <qiaowei.ren@intel.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Chen Yucong <slaoub@gmail.com>
Cc: Adam Buchbinder <adam.buchbinder@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Garnier <thgarnie@google.com>
Link: https://lkml.kernel.org/r/1509135945-13762-4-git-send-email-ricardo.neri-calderon@linux.intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit c49a0a80137c7ca7d6ced4c812c9e07a949f6f24 ]
There have been reports of RDRAND issues after resuming from suspend on
some AMD family 15h and family 16h systems. This issue stems from a BIOS
not performing the proper steps during resume to ensure RDRAND continues
to function properly.
RDRAND support is indicated by CPUID Fn00000001_ECX[30]. This bit can be
reset by clearing MSR C001_1004[62]. Any software that checks for RDRAND
support using CPUID, including the kernel, will believe that RDRAND is
not supported.
Update the CPU initialization to clear the RDRAND CPUID bit for any family
15h and 16h processor that supports RDRAND. If it is known that the family
15h or family 16h system does not have an RDRAND resume issue or that the
system will not be placed in suspend, the "rdrand=force" kernel parameter
can be used to stop the clearing of the RDRAND CPUID bit.
Additionally, update the suspend and resume path to save and restore the
MSR C001_1004 value to ensure that the RDRAND CPUID setting remains in
place after resuming from suspend.
Note, that clearing the RDRAND CPUID bit does not prevent a processor
that normally supports the RDRAND instruction from executing it. So any
code that determined the support based on family and model won't #UD.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Chen Yu <yu.c.chen@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: "linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>
Cc: "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: <stable@vger.kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "x86@kernel.org" <x86@kernel.org>
Link: https://lkml.kernel.org/r/7543af91666f491547bd86cebb1e17c66824ab9f.1566229943.git.thomas.lendacky@amd.com
[sl: adjust context in docs]
Signed-off-by: Sasha Levin <sashal@kernel.org>
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suspend/resume
[ Upstream commit 7a9c2dd08eadd5c6943115dbbec040c38d2e0822 ]
A bug was reported that on certain Broadwell platforms, after
resuming from S3, the CPU is running at an anomalously low
speed.
It turns out that the BIOS has modified the value of the
THERM_CONTROL register during S3, and changed it from 0 to 0x10,
thus enabled clock modulation(bit4), but with undefined CPU Duty
Cycle(bit1:3) - which causes the problem.
Here is a simple scenario to reproduce the issue:
1. Boot up the system
2. Get MSR 0x19a, it should be 0
3. Put the system into sleep, then wake it up
4. Get MSR 0x19a, it shows 0x10, while it should be 0
Although some BIOSen want to change the CPU Duty Cycle during
S3, in our case we don't want the BIOS to do any modification.
Fix this issue by introducing a more generic x86 framework to
save/restore specified MSR registers(THERM_CONTROL in this case)
for suspend/resume. This allows us to fix similar bugs in a much
simpler way in the future.
When the kernel wants to protect certain MSRs during suspending,
we simply add a quirk entry in msr_save_dmi_table, and customize
the MSR registers inside the quirk callback, for example:
u32 msr_id_need_to_save[] = {MSR_ID0, MSR_ID1, MSR_ID2...};
and the quirk mechanism ensures that, once resumed from suspend,
the MSRs indicated by these IDs will be restored to their
original, pre-suspend values.
Since both 64-bit and 32-bit kernels are affected, this patch
covers the common 64/32-bit suspend/resume code path. And
because the MSRs specified by the user might not be available or
readable in any situation, we use rdmsrl_safe() to safely save
these MSRs.
Reported-and-tested-by: Marcin Kaszewski <marcin.kaszewski@intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@suse.de
Cc: len.brown@intel.com
Cc: linux@horizon.com
Cc: luto@kernel.org
Cc: rjw@rjwysocki.net
Link: http://lkml.kernel.org/r/c9abdcbc173dd2f57e8990e304376f19287e92ba.1448382971.git.yu.c.chen@intel.com
[ More edits to the naming of data structures. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 7846f58fba964af7cb8cf77d4d13c33254725211 upstream.
commit a90118c445cc ("x86/boot: Save fields explicitly, zero out everything
else") had two errors:
* It preserved boot_params.acpi_rsdp_addr, and
* It failed to preserve boot_params.hdr
Therefore, zero out acpi_rsdp_addr, and preserve hdr.
Fixes: a90118c445cc ("x86/boot: Save fields explicitly, zero out everything else")
Reported-by: Neil MacLeod <neil@nmacleod.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Neil MacLeod <neil@nmacleod.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190821192513.20126-1-jhubbard@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit a90118c445cc7f07781de26a9684d4ec58bfcfd1 upstream.
Recent gcc compilers (gcc 9.1) generate warnings about an out of bounds
memset, if the memset goes accross several fields of a struct. This
generated a couple of warnings on x86_64 builds in sanitize_boot_params().
Fix this by explicitly saving the fields in struct boot_params
that are intended to be preserved, and zeroing all the rest.
[ tglx: Tagged for stable as it breaks the warning free build there as well ]
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Suggested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190731054627.5627-2-jhubbard@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit b63f20a778c88b6a04458ed6ffc69da953d3a109 upstream.
Use 'lea' instead of 'add' when adjusting %rsp in CALL_NOSPEC so as to
avoid clobbering flags.
KVM's emulator makes indirect calls into a jump table of sorts, where
the destination of the CALL_NOSPEC is a small blob of code that performs
fast emulation by executing the target instruction with fixed operands.
adcb_al_dl:
0x000339f8 <+0>: adc %dl,%al
0x000339fa <+2>: ret
A major motiviation for doing fast emulation is to leverage the CPU to
handle consumption and manipulation of arithmetic flags, i.e. RFLAGS is
both an input and output to the target of CALL_NOSPEC. Clobbering flags
results in all sorts of incorrect emulation, e.g. Jcc instructions often
take the wrong path. Sans the nops...
asm("push %[flags]; popf; " CALL_NOSPEC " ; pushf; pop %[flags]\n"
0x0003595a <+58>: mov 0xc0(%ebx),%eax
0x00035960 <+64>: mov 0x60(%ebx),%edx
0x00035963 <+67>: mov 0x90(%ebx),%ecx
0x00035969 <+73>: push %edi
0x0003596a <+74>: popf
0x0003596b <+75>: call *%esi
0x000359a0 <+128>: pushf
0x000359a1 <+129>: pop %edi
0x000359a2 <+130>: mov %eax,0xc0(%ebx)
0x000359b1 <+145>: mov %edx,0x60(%ebx)
ctxt->eflags = (ctxt->eflags & ~EFLAGS_MASK) | (flags & EFLAGS_MASK);
0x000359a8 <+136>: mov -0x10(%ebp),%eax
0x000359ab <+139>: and $0x8d5,%edi
0x000359b4 <+148>: and $0xfffff72a,%eax
0x000359b9 <+153>: or %eax,%edi
0x000359bd <+157>: mov %edi,0x4(%ebx)
For the most part this has gone unnoticed as emulation of guest code
that can trigger fast emulation is effectively limited to MMIO when
running on modern hardware, and MMIO is rarely, if ever, accessed by
instructions that affect or consume flags.
Breakage is almost instantaneous when running with unrestricted guest
disabled, in which case KVM must emulate all instructions when the guest
has invalid state, e.g. when the guest is in Big Real Mode during early
BIOS.
Fixes: 776b043848fd2 ("x86/retpoline: Add initial retpoline support")
Fixes: 1a29b5b7f347a ("KVM: x86: Make indirect calls in emulator speculation safe")
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190822211122.27579-1-sean.j.christopherson@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-ac7fbca
Linux 4.4.190
bonding: Add vlan tx offload to hw_enc_features
sctp: fix the transport error_count check
net/mlx5e: Only support tx/rx pause setting for port owner
xen/netback: Reset nr_frags before freeing skb
net/packet: fix race in tpacket_snd()
x86/boot: Disable the address-of-packed-member compiler warning
iommu/amd: Move iommu_init_pci() to .init section
x86/vdso: Remove direct HPET access through the vDSO
IB/mlx5: Make coding style more consistent
RDMA: Directly cast the sockaddr union to sockaddr
scsi: fcoe: Embed fc_rport_priv in fcoe_rport structure
asm-generic: default BUG_ON(x) to if(x)BUG()
Input: psmouse - fix build error of multiple definition
arm64: compat: Allow single-byte watchpoints on all addresses
include/linux/module.h: copy __init/__exit attrs to init/cleanup_module
Backport minimal compiler_attributes.h to support GCC 9
USB: serial: option: Add Motorola modem UARTs
USB: serial: option: add the BroadMobi BM818 card
USB: serial: option: Add support for ZTE MF871A
USB: serial: option: add D-Link DWM-222 device ID
usb: cdc-acm: make sure a refcount is taken early enough
USB: core: Fix races in character device registration and deregistraion
staging: comedi: dt3000: Fix rounding up of timer divisor
staging: comedi: dt3000: Fix signed integer overflow 'divider * base'
asm-generic: fix -Wtype-limits compiler warnings
ocfs2: remove set but not used variable 'last_hash'
IB/core: Add mitigation for Spectre V1
kbuild: modpost: handle KBUILD_EXTRA_SYMBOLS only for external modules
ata: libahci: do not complain in case of deferred probe
scsi: hpsa: correct scsi command status issue after reset
libata: zpodd: Fix small read overflow in zpodd_get_mech_type()
perf header: Fix use of unitialized value warning
perf header: Fix divide by zero error if f_header.attr_size==0
irqchip/irq-imx-gpcv2: Forward irq type to parent
xen/pciback: remove set but not used variable 'old_state'
net: usb: pegasus: fix improper read if get_registers() fail
Input: iforce - add sanity checks
Input: kbtab - sanity check for endpoint type
HID: hiddev: do cleanup in failure of opening a device
HID: hiddev: avoid opening a disconnected device
HID: holtek: test for sanity of intfdata
ALSA: hda - Fix a memory leak bug
mm/memcontrol.c: fix use after free in mem_cgroup_iter()
USB: gadget: f_midi: fixing a possible double-free in f_midi
usb: gadget: f_midi: fail if set_alt fails to allocate requests
sh: kernel: hw_breakpoint: Fix missing break in switch statement
scsi: mpt3sas: Use 63-bit DMA addressing on SAS35 HBA
mwifiex: fix 802.11n/WPA detection
smb3: send CAP_DFS capability during session setup
SMB3: Fix deadlock in validate negotiate hits reconnect
mac80211: don't WARN on short WMM parameters from AP
ALSA: firewire: fix a memory leak bug
hwmon: (nct7802) Fix wrong detection of in4 presence
can: peak_usb: pcan_usb_fd: Fix info-leaks to USB devices
can: peak_usb: pcan_usb_pro: Fix info-leaks to USB devices
perf/core: Fix creating kernel counters for PMUs that override event->cpu
tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop
scsi: ibmvfc: fix WARN_ON during event pool release
scsi: megaraid_sas: fix panic on loading firmware crashdump
ARM: davinci: fix sleep.S build error on ARMv4
perf probe: Avoid calling freeing routine multiple times for same pointer
ALSA: compress: Be more restrictive about when a drain is allowed
ALSA: compress: Prevent bypasses of set_params
ALSA: compress: Fix regression on compressed capture streams
s390/qdio: add sanity checks to the fast-requeue path
cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init()
hwmon: (nct6775) Fix register address and added missed tolerance for nct6106
mac80211: don't warn about CW params when not using them
iscsi_ibft: make ISCSI_IBFT dependson ACPI instead of ISCSI_IBFT_FIND
netfilter: nfnetlink: avoid deadlock due to synchronous request_module
can: peak_usb: fix potential double kfree_skb()
usb: yurex: Fix use-after-free in yurex_delete
perf db-export: Fix thread__exec_comm()
mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()
x86/mm: Sync also unmappings in vmalloc_sync_all()
x86/mm: Check for pfn instead of page in vmalloc_sync_one()
sound: fix a memory leak bug
usb: iowarrior: fix deadlock on disconnect
ANDROID: fix binder change in merge of 4.4.183
Conflicts:
sound/core/compress_offload.c
Change-Id: I30e498c36dc295fbfa0e1d455e31f192fd99479e
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.190
usb: iowarrior: fix deadlock on disconnect
sound: fix a memory leak bug
x86/mm: Check for pfn instead of page in vmalloc_sync_one()
x86/mm: Sync also unmappings in vmalloc_sync_all()
mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()
perf db-export: Fix thread__exec_comm()
usb: yurex: Fix use-after-free in yurex_delete
can: peak_usb: fix potential double kfree_skb()
netfilter: nfnetlink: avoid deadlock due to synchronous request_module
iscsi_ibft: make ISCSI_IBFT dependson ACPI instead of ISCSI_IBFT_FIND
mac80211: don't warn about CW params when not using them
hwmon: (nct6775) Fix register address and added missed tolerance for nct6106
cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init()
s390/qdio: add sanity checks to the fast-requeue path
ALSA: compress: Fix regression on compressed capture streams
ALSA: compress: Prevent bypasses of set_params
ALSA: compress: Be more restrictive about when a drain is allowed
perf probe: Avoid calling freeing routine multiple times for same pointer
ARM: davinci: fix sleep.S build error on ARMv4
scsi: megaraid_sas: fix panic on loading firmware crashdump
scsi: ibmvfc: fix WARN_ON during event pool release
tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop
perf/core: Fix creating kernel counters for PMUs that override event->cpu
can: peak_usb: pcan_usb_pro: Fix info-leaks to USB devices
can: peak_usb: pcan_usb_fd: Fix info-leaks to USB devices
hwmon: (nct7802) Fix wrong detection of in4 presence
ALSA: firewire: fix a memory leak bug
mac80211: don't WARN on short WMM parameters from AP
SMB3: Fix deadlock in validate negotiate hits reconnect
smb3: send CAP_DFS capability during session setup
mwifiex: fix 802.11n/WPA detection
scsi: mpt3sas: Use 63-bit DMA addressing on SAS35 HBA
sh: kernel: hw_breakpoint: Fix missing break in switch statement
usb: gadget: f_midi: fail if set_alt fails to allocate requests
USB: gadget: f_midi: fixing a possible double-free in f_midi
mm/memcontrol.c: fix use after free in mem_cgroup_iter()
ALSA: hda - Fix a memory leak bug
HID: holtek: test for sanity of intfdata
HID: hiddev: avoid opening a disconnected device
HID: hiddev: do cleanup in failure of opening a device
Input: kbtab - sanity check for endpoint type
Input: iforce - add sanity checks
net: usb: pegasus: fix improper read if get_registers() fail
xen/pciback: remove set but not used variable 'old_state'
irqchip/irq-imx-gpcv2: Forward irq type to parent
perf header: Fix divide by zero error if f_header.attr_size==0
perf header: Fix use of unitialized value warning
libata: zpodd: Fix small read overflow in zpodd_get_mech_type()
scsi: hpsa: correct scsi command status issue after reset
ata: libahci: do not complain in case of deferred probe
kbuild: modpost: handle KBUILD_EXTRA_SYMBOLS only for external modules
IB/core: Add mitigation for Spectre V1
ocfs2: remove set but not used variable 'last_hash'
asm-generic: fix -Wtype-limits compiler warnings
staging: comedi: dt3000: Fix signed integer overflow 'divider * base'
staging: comedi: dt3000: Fix rounding up of timer divisor
USB: core: Fix races in character device registration and deregistraion
usb: cdc-acm: make sure a refcount is taken early enough
USB: serial: option: add D-Link DWM-222 device ID
USB: serial: option: Add support for ZTE MF871A
USB: serial: option: add the BroadMobi BM818 card
USB: serial: option: Add Motorola modem UARTs
Backport minimal compiler_attributes.h to support GCC 9
include/linux/module.h: copy __init/__exit attrs to init/cleanup_module
arm64: compat: Allow single-byte watchpoints on all addresses
Input: psmouse - fix build error of multiple definition
asm-generic: default BUG_ON(x) to if(x)BUG()
scsi: fcoe: Embed fc_rport_priv in fcoe_rport structure
RDMA: Directly cast the sockaddr union to sockaddr
IB/mlx5: Make coding style more consistent
x86/vdso: Remove direct HPET access through the vDSO
iommu/amd: Move iommu_init_pci() to .init section
x86/boot: Disable the address-of-packed-member compiler warning
net/packet: fix race in tpacket_snd()
xen/netback: Reset nr_frags before freeing skb
net/mlx5e: Only support tx/rx pause setting for port owner
sctp: fix the transport error_count check
bonding: Add vlan tx offload to hw_enc_features
Linux 4.4.190
Change-Id: I2af7fee66e6ce77c41266cec8cfa7b7c4a78a05c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 1ed95e52d902035e39a715ff3a314a893a96e5b7 upstream.
Allowing user code to map the HPET is problematic. HPET
implementations are notoriously buggy, and there are probably many
machines on which even MMIO reads from bogus HPET addresses are
problematic.
We have a report that the Dell Precision M2800 with:
ACPI: HPET 0x00000000C8FE6238 000038 (v01 DELL CBX3 01072009 AMI. 00000005)
is either so slow when accessing the HPET or actually hangs in some
regard, causing soft lockups to be reported if users do unexpected
things to the HPET.
The vclock HPET code has also always been a questionable speedup.
Accessing an HPET is exceedingly slow (on the order of several
microseconds), so the added overhead in requiring a syscall to read
the HPET is a small fraction of the total code of accessing it.
To avoid future problems, let's just delete the code entirely.
In the long run, this could actually be a speedup. Waiman Long as a
patch to optimize the case where multiple CPUs contend for the HPET,
but that won't help unless all the accesses are mediated by the
kernel.
Reported-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Waiman Long <Waiman.Long@hpe.com>
Cc: Waiman Long <waiman.long@hpe.com>
Link: http://lkml.kernel.org/r/d2f90bba98db9905041cff294646d290d378f67a.1460074438.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-74c8219
Linux 4.4.189
x86/speculation/swapgs: Exclude ATOMs from speculation through SWAPGS
x86/entry/64: Use JMP instead of JMPQ
x86/speculation: Enable Spectre v1 swapgs mitigations
x86/speculation: Prepare entry code for Spectre v1 swapgs mitigations
x86/entry/64: Fix context tracking state warning when load_gs_index fails
x86: cpufeatures: Sort feature word 7
spi: bcm2835: Fix 3-wire mode if DMA is enabled
block: blk_init_allocated_queue() set q->fq as NULL in the fail case
compat_ioctl: pppoe: fix PPPOEIOCSFWD handling
bnx2x: Disable multi-cos feature.
net/mlx5: Use reversed order when unregister devices
net: sched: Fix a possible null-pointer dereference in dequeue_func()
tipc: compat: allow tipc commands without arguments
net: fix ifindex collision during namespace removal
net: bridge: delete local fdb on device init failure
atm: iphase: Fix Spectre v1 vulnerability
tcp: be more careful in tcp_fragment()
HID: Add quirk for HP X1200 PIXART OEM mouse
netfilter: nfnetlink_acct: validate NFACCT_QUOTA parameter
arm64: cpufeature: Fix feature comparison for CTR_EL0.{CWG,ERG}
arm64: cpufeature: Fix CTR_EL0 field definitions
UPSTREAM: net-ipv6-ndisc: add support for RFC7710 RA Captive Portal Identifier
Change-Id: I0bdf89783d0c83a3385d77f6b4c6f3d3b3fb0460
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.189
arm64: cpufeature: Fix CTR_EL0 field definitions
arm64: cpufeature: Fix feature comparison for CTR_EL0.{CWG,ERG}
netfilter: nfnetlink_acct: validate NFACCT_QUOTA parameter
HID: Add quirk for HP X1200 PIXART OEM mouse
tcp: be more careful in tcp_fragment()
atm: iphase: Fix Spectre v1 vulnerability
net: bridge: delete local fdb on device init failure
net: fix ifindex collision during namespace removal
tipc: compat: allow tipc commands without arguments
net: sched: Fix a possible null-pointer dereference in dequeue_func()
net/mlx5: Use reversed order when unregister devices
bnx2x: Disable multi-cos feature.
compat_ioctl: pppoe: fix PPPOEIOCSFWD handling
block: blk_init_allocated_queue() set q->fq as NULL in the fail case
spi: bcm2835: Fix 3-wire mode if DMA is enabled
x86: cpufeatures: Sort feature word 7
x86/entry/64: Fix context tracking state warning when load_gs_index fails
x86/speculation: Prepare entry code for Spectre v1 swapgs mitigations
x86/speculation: Enable Spectre v1 swapgs mitigations
x86/entry/64: Use JMP instead of JMPQ
x86/speculation/swapgs: Exclude ATOMs from speculation through SWAPGS
Linux 4.4.189
Change-Id: I3d4e7965c8f5547ab025236686ea0d60e0b6e1f4
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit f36cf386e3fec258a341d446915862eded3e13d8 upstream.
Intel provided the following information:
On all current Atom processors, instructions that use a segment register
value (e.g. a load or store) will not speculatively execute before the
last writer of that segment retires. Thus they will not use a
speculatively written segment value.
That means on ATOMs there is no speculation through SWAPGS, so the SWAPGS
entry paths can be excluded from the extra LFENCE if PTI is disabled.
Create a separate bug flag for the through SWAPGS speculation and mark all
out-of-order ATOMs and AMD/HYGON CPUs as not affected. The in-order ATOMs
are excluded from the whole mitigation mess anyway.
Reported-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Tyler Hicks <tyhicks@canonical.com>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
[bwh: Backported to 4.4:
- There's no whitelist entry (or any support) for Hygon CPUs
- Adjust context, indentation]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 18ec54fdd6d18d92025af097cd042a75cf0ea24c upstream.
Spectre v1 isn't only about array bounds checks. It can affect any
conditional checks. The kernel entry code interrupt, exception, and NMI
handlers all have conditional swapgs checks. Those may be problematic in
the context of Spectre v1, as kernel code can speculatively run with a user
GS.
For example:
if (coming from user space)
swapgs
mov %gs:<percpu_offset>, %reg
mov (%reg), %reg1
When coming from user space, the CPU can speculatively skip the swapgs, and
then do a speculative percpu load using the user GS value. So the user can
speculatively force a read of any kernel value. If a gadget exists which
uses the percpu value as an address in another load/store, then the
contents of the kernel value may become visible via an L1 side channel
attack.
A similar attack exists when coming from kernel space. The CPU can
speculatively do the swapgs, causing the user GS to get used for the rest
of the speculative window.
The mitigation is similar to a traditional Spectre v1 mitigation, except:
a) index masking isn't possible; because the index (percpu offset)
isn't user-controlled; and
b) an lfence is needed in both the "from user" swapgs path and the
"from kernel" non-swapgs path (because of the two attacks described
above).
The user entry swapgs paths already have SWITCH_TO_KERNEL_CR3, which has a
CR3 write when PTI is enabled. Since CR3 writes are serializing, the
lfences can be skipped in those cases.
On the other hand, the kernel entry swapgs paths don't depend on PTI.
To avoid unnecessary lfences for the user entry case, create two separate
features for alternative patching:
X86_FEATURE_FENCE_SWAPGS_USER
X86_FEATURE_FENCE_SWAPGS_KERNEL
Use these features in entry code to patch in lfences where needed.
The features aren't enabled yet, so there's no functional change.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
[bwh: Backported to 4.4:
- Assign the CPU feature bits from word 7
- Add FENCE_SWAPGS_KERNEL_ENTRY to NMI entry, since it does not
use paranoid_entry
- Include <asm/cpufeatures.h> in calling.h
- Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This will make it clearer which bits are allocated, in case we need to
assign more feature bits for later backports.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-886d085
Linux 4.4.188
xen/swiotlb: fix condition for calling xen_destroy_contiguous_region()
s390/dasd: fix endless loop after read unit address configuration
selinux: fix memory leak in policydb_init()
x86/kvm: Don't call kvm_spurious_fault() from .fixup
ipc/mqueue.c: only perform resource calculation if user valid
uapi linux/coda_psdev.h: move upc_req definition from uapi to kernel side headers
coda: fix build using bare-metal toolchain
coda: add error handling for fget
mm/cma.c: fail if fixed declaration can't be honored
x86: math-emu: Hide clang warnings for 16-bit overflow
x86/apic: Silence -Wtype-limits compiler warnings
be2net: Signal that the device cannot transmit during reconfiguration
ACPI: fix false-positive -Wuninitialized warning
scsi: zfcp: fix GCC compiler warning emitted with -Wmaybe-uninitialized
ceph: fix improper use of smp_mb__before_atomic()
btrfs: fix minimum number of chunk errors for DUP
fs/adfs: super: fix use-after-free bug
dmaengine: rcar-dmac: Reject zero-length slave DMA requests
MIPS: lantiq: Fix bitfield masking
kernel/module.c: Only return -EEXIST for modules that have finished loading
ARM: dts: rockchip: Mark that the rk3288 timer might stop in suspend
ARM: riscpc: fix DMA
Change-Id: I5117beda77a1297c46e7b105bd70d1d726dd6d2b
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.188
ARM: riscpc: fix DMA
ARM: dts: rockchip: Mark that the rk3288 timer might stop in suspend
kernel/module.c: Only return -EEXIST for modules that have finished loading
MIPS: lantiq: Fix bitfield masking
dmaengine: rcar-dmac: Reject zero-length slave DMA requests
fs/adfs: super: fix use-after-free bug
btrfs: fix minimum number of chunk errors for DUP
ceph: fix improper use of smp_mb__before_atomic()
scsi: zfcp: fix GCC compiler warning emitted with -Wmaybe-uninitialized
ACPI: fix false-positive -Wuninitialized warning
be2net: Signal that the device cannot transmit during reconfiguration
x86/apic: Silence -Wtype-limits compiler warnings
x86: math-emu: Hide clang warnings for 16-bit overflow
mm/cma.c: fail if fixed declaration can't be honored
coda: add error handling for fget
coda: fix build using bare-metal toolchain
uapi linux/coda_psdev.h: move upc_req definition from uapi to kernel side headers
ipc/mqueue.c: only perform resource calculation if user valid
x86/kvm: Don't call kvm_spurious_fault() from .fixup
selinux: fix memory leak in policydb_init()
s390/dasd: fix endless loop after read unit address configuration
xen/swiotlb: fix condition for calling xen_destroy_contiguous_region()
Linux 4.4.188
Change-Id: Id4d8157fe94d0c6be18731ff0612500394eafec2
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit 3901336ed9887b075531bffaeef7742ba614058b ]
After making a change to improve objtool's sibling call detection, it
started showing the following warning:
arch/x86/kvm/vmx/nested.o: warning: objtool: .fixup+0x15: sibling call from callable instruction with modified stack frame
The problem is the ____kvm_handle_fault_on_reboot() macro. It does a
fake call by pushing a fake RIP and doing a jump. That tricks the
unwinder into printing the function which triggered the exception,
rather than the .fixup code.
Instead of the hack to make it look like the original function made the
call, just change the macro so that the original function actually does
make the call. This allows removal of the hack, and also makes objtool
happy.
I triggered a vmx instruction exception and verified that the stack
trace is still sane:
kernel BUG at arch/x86/kvm/x86.c:358!
invalid opcode: 0000 [#1] SMP PTI
CPU: 28 PID: 4096 Comm: qemu-kvm Not tainted 5.2.0+ #16
Hardware name: Lenovo THINKSYSTEM SD530 -[7X2106Z000]-/-[7X2106Z000]-, BIOS -[TEE113Z-1.00]- 07/17/2017
RIP: 0010:kvm_spurious_fault+0x5/0x10
Code: 00 00 00 00 00 8b 44 24 10 89 d2 45 89 c9 48 89 44 24 10 8b 44 24 08 48 89 44 24 08 e9 d4 40 22 00 0f 1f 40 00 0f 1f 44 00 00 <0f> 0b 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 55 49 89 fd 41
RSP: 0018:ffffbf91c683bd00 EFLAGS: 00010246
RAX: 000061f040000000 RBX: ffff9e159c77bba0 RCX: ffff9e15a5c87000
RDX: 0000000665c87000 RSI: ffff9e15a5c87000 RDI: ffff9e159c77bba0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff9e15a5c87000
R10: 0000000000000000 R11: fffff8f2d99721c0 R12: ffff9e159c77bba0
R13: ffffbf91c671d960 R14: ffff9e159c778000 R15: 0000000000000000
FS: 00007fa341cbe700(0000) GS:ffff9e15b7400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdd38356804 CR3: 00000006759de003 CR4: 00000000007606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
loaded_vmcs_init+0x4f/0xe0
alloc_loaded_vmcs+0x38/0xd0
vmx_create_vcpu+0xf7/0x600
kvm_vm_ioctl+0x5e9/0x980
? __switch_to_asm+0x40/0x70
? __switch_to_asm+0x34/0x70
? __switch_to_asm+0x40/0x70
? __switch_to_asm+0x34/0x70
? free_one_page+0x13f/0x4e0
do_vfs_ioctl+0xa4/0x630
ksys_ioctl+0x60/0x90
__x64_sys_ioctl+0x16/0x20
do_syscall_64+0x55/0x1c0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fa349b1ee5b
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/64a9b64d127e87b6920a97afde8e96ea76f6524e.1563413318.git.jpoimboe@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit ec6335586953b0df32f83ef696002063090c7aef ]
There are many compiler warnings like this,
In file included from ./arch/x86/include/asm/smp.h:13,
from ./arch/x86/include/asm/mmzone_64.h:11,
from ./arch/x86/include/asm/mmzone.h:5,
from ./include/linux/mmzone.h:969,
from ./include/linux/gfp.h:6,
from ./include/linux/mm.h:10,
from arch/x86/kernel/apic/io_apic.c:34:
arch/x86/kernel/apic/io_apic.c: In function 'check_timer':
./arch/x86/include/asm/apic.h:37:11: warning: comparison of unsigned
expression >= 0 is always true [-Wtype-limits]
if ((v) <= apic_verbosity) \
^~
arch/x86/kernel/apic/io_apic.c:2160:2: note: in expansion of macro
'apic_printk'
apic_printk(APIC_QUIET, KERN_INFO "..TIMER: vector=0x%02X "
^~~~~~~~~~~
./arch/x86/include/asm/apic.h:37:11: warning: comparison of unsigned
expression >= 0 is always true [-Wtype-limits]
if ((v) <= apic_verbosity) \
^~
arch/x86/kernel/apic/io_apic.c:2207:4: note: in expansion of macro
'apic_printk'
apic_printk(APIC_QUIET, KERN_ERR "..MP-BIOS bug: "
^~~~~~~~~~~
APIC_QUIET is 0, so silence them by making apic_verbosity type int.
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/1562621805-24789-1-git-send-email-cai@lca.pw
Signed-off-by: Sasha Levin <sashal@kernel.org>
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* refs/heads/tmp-71cb827
Linux 4.4.180
powerpc/lib: fix book3s/32 boot failure due to code patching
powerpc/booke64: set RI in default MSR
drivers/virt/fsl_hypervisor.c: prevent integer overflow in ioctl
drivers/virt/fsl_hypervisor.c: dereferencing error pointers in ioctl
bonding: fix arp_validate toggling in active-backup mode
ipv4: Fix raw socket lookup for local traffic
vrf: sit mtu should not be updated when vrf netdev is the link
vlan: disable SIOCSHWTSTAMP in container
packet: Fix error path in packet_init
net: ucc_geth - fix Oops when changing number of buffers in the ring
bridge: Fix error path for kobject_init_and_add()
powerpc/64s: Include cpu header
USB: serial: fix unthrottle races
USB: serial: use variable for status
x86/bugs: Change L1TF mitigation string to match upstream
x86/speculation/mds: Fix documentation typo
Documentation: Correct the possible MDS sysfs values
x86/mds: Add MDSUM variant to the MDS documentation
x86/speculation/mds: Add 'mitigations=' support for MDS
x86/speculation: Support 'mitigations=' cmdline option
cpu/speculation: Add 'mitigations=' cmdline option
x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off
x86/speculation/mds: Fix comment
x86/speculation/mds: Add SMT warning message
x86/speculation: Move arch_smt_update() call to after mitigation decisions
x86/cpu/bugs: Use __initconst for 'const' init data
Documentation: Add MDS vulnerability documentation
Documentation: Move L1TF to separate directory
x86/speculation/mds: Add mitigation mode VMWERV
x86/speculation/mds: Add sysfs reporting for MDS
x86/speculation/l1tf: Document l1tf in sysfs
x86/speculation/mds: Add mitigation control for MDS
x86/speculation/mds: Conditionally clear CPU buffers on idle entry
x86/speculation/mds: Clear CPU buffers on exit to user
x86/speculation/mds: Add mds_clear_cpu_buffers()
x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests
x86/speculation/mds: Add BUG_MSBDS_ONLY
x86/speculation/mds: Add basic bug infrastructure for MDS
x86/speculation: Consolidate CPU whitelists
x86/msr-index: Cleanup bit defines
kvm: x86: Report STIBP on GET_SUPPORTED_CPUID
x86/speculation: Provide IBPB always command line options
x86/speculation: Add seccomp Spectre v2 user space protection mode
x86/speculation: Enable prctl mode for spectre_v2_user
x86/speculation: Add prctl() control for indirect branch speculation
x86/speculation: Prevent stale SPEC_CTRL msr content
x86/speculation: Prepare arch_smt_update() for PRCTL mode
x86/speculation: Split out TIF update
x86/speculation: Prepare for conditional IBPB in switch_mm()
x86/speculation: Avoid __switch_to_xtra() calls
x86/process: Consolidate and simplify switch_to_xtra() code
x86/speculation: Prepare for per task indirect branch speculation control
x86/speculation: Add command line control for indirect branch speculation
x86/speculation: Unify conditional spectre v2 print functions
x86/speculataion: Mark command line parser data __initdata
x86/speculation: Mark string arrays const correctly
x86/speculation: Reorder the spec_v2 code
x86/speculation: Rework SMT state change
sched: Add sched_smt_active()
x86/Kconfig: Select SCHED_SMT if SMP enabled
x86/speculation: Reorganize speculation control MSRs update
x86/speculation: Rename SSBD update functions
x86/speculation: Disable STIBP when enhanced IBRS is in use
x86/speculation: Move STIPB/IBPB string conditionals out of cpu_show_common()
x86/speculation: Remove unnecessary ret variable in cpu_show_common()
x86/speculation: Clean up spectre_v2_parse_cmdline()
x86/speculation: Update the TIF_SSBD comment
x86/speculation: Propagate information about RSB filling mitigation to sysfs
x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
x86/speculation: Apply IBPB more strictly to avoid cross-process data leak
x86/mm: Use WRITE_ONCE() when setting PTEs
KVM: x86: SVM: Call x86_spec_ctrl_set_guest/host() with interrupts disabled
x86/cpu: Sanitize FAM6_ATOM naming
x86/microcode: Update the new microcode revision unconditionally
x86/microcode: Make sure boot_cpu_data.microcode is up-to-date
x86/speculation: Remove SPECTRE_V2_IBRS in enum spectre_v2_mitigation
x86/bugs: Fix the AMD SSBD usage of the SPEC_CTRL MSR
locking/atomics, asm-generic: Move some macros from <linux/bitops.h> to a new <linux/bits.h> file
x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features
x86/bugs: Add AMD's SPEC_CTRL MSR usage
x86/bugs: Add AMD's variant of SSB_NO
x86/speculation: Simplify the CPU bug detection logic
x86/speculation: Support Enhanced IBRS on future CPUs
x86/cpufeatures: Hide AMD-specific speculation flags
x86/MCE: Save microcode revision in machine check records
x86/microcode/intel: Check microcode revision before updating sibling threads
bitops: avoid integer overflow in GENMASK(_ULL)
x86: stop exporting msr-index.h to userland
x86/microcode/intel: Add a helper which gives the microcode revision
locking/static_keys: Provide DECLARE and well as DEFINE macros
Don't jump to compute_result state from check_result state
x86/vdso: Pass --eh-frame-hdr to the linker
cw1200: fix missing unlock on error in cw1200_hw_scan()
gpu: ipu-v3: dp: fix CSC handling
selftests/net: correct the return value for run_netsocktests
s390: ctcm: fix ctcm_new_device error return code
ipvs: do not schedule icmp errors from tunnels
init: initialize jump labels before command line option parsing
tools lib traceevent: Fix missing equality check for strcmp
KVM: x86: avoid misreporting level-triggered irqs as edge-triggered in tracing
s390/3270: fix lockdep false positive on view->lock
s390/dasd: Fix capacity calculation for large volumes
libnvdimm/btt: Fix a kmemdup failure check
HID: input: add mapping for keyboard Brightness Up/Down/Toggle keys
HID: input: add mapping for Expose/Overview key
iio: adc: xilinx: fix potential use-after-free on remove
platform/x86: sony-laptop: Fix unintentional fall-through
netfilter: compat: initialize all fields in xt_init
timer/debug: Change /proc/timer_stats from 0644 to 0600
ASoC: Intel: avoid Oops if DMA setup fails
ipv6: fix a potential deadlock in do_ipv6_setsockopt()
UAS: fix alignment of scatter/gather segments
Bluetooth: Align minimum encryption key size for LE and BR/EDR connections
Bluetooth: hidp: fix buffer overflow
scsi: qla2xxx: Fix incorrect region-size setting in optrom SYSFS routines
usb: dwc3: Fix default lpm_nyet_threshold value
genirq: Prevent use-after-free and work list corruption
iommu/amd: Set exclusion range correctly
scsi: csiostor: fix missing data copy in csio_scsi_err_handler()
perf/x86/intel: Fix handling of wakeup_events for multi-entry PEBS
ASoC: tlv320aic32x4: Fix Common Pins
ASoC: cs4270: Set auto-increment bit for register writes
ASoC:soc-pcm:fix a codec fixup issue in TDM case
scsi: libsas: fix a race condition when smp task timeout
media: v4l2: i2c: ov7670: Fix PLL bypass register values
x86/mce: Improve error message when kernel cannot recover, p2
selinux: never allow relabeling on context mounts
Input: snvs_pwrkey - initialize necessary driver data before enabling IRQ
staging: iio: adt7316: fix the dac write calculation
staging: iio: adt7316: fix the dac read calculation
staging: iio: adt7316: allow adt751x to use internal vref for all dacs
usb: usbip: fix isoc packet num validation in get_pipe
ARM: iop: don't use using 64-bit DMA masks
ARM: orion: don't use using 64-bit DMA masks
xsysace: Fix error handling in ace_setup
hugetlbfs: fix memory leak for resv_map
net: hns: Fix WARNING when remove HNS driver with SMMU enabled
net: hns: Use NAPI_POLL_WEIGHT for hns driver
scsi: storvsc: Fix calculation of sub-channel count
vfio/pci: use correct format characters
rtc: da9063: set uie_unsupported when relevant
debugfs: fix use-after-free on symlink traversal
jffs2: fix use-after-free on symlink traversal
bonding: show full hw address in sysfs for slave entries
igb: Fix WARN_ONCE on runtime suspend
rtc: sh: Fix invalid alarm warning for non-enabled alarm
HID: debug: fix race condition with between rdesc_show() and device removal
USB: core: Fix bug caused by duplicate interface PM usage counter
USB: core: Fix unterminated string returned by usb_string()
USB: w1 ds2490: Fix bug caused by improper use of altsetting array
USB: yurex: Fix protection fault after device removal
packet: validate msg_namelen in send directly
bnxt_en: Improve multicast address setup logic.
ipv6: invert flowlabel sharing check in process and user mode
ipv6/flowlabel: wait rcu grace period before put_pid()
ipv4: ip_do_fragment: Preserve skb_iif during fragmentation
ALSA: line6: use dynamic buffers
vfio/type1: Limit DMA mappings per container
kconfig/[mn]conf: handle backspace (^H) key
libata: fix using DMA buffers on stack
scsi: zfcp: reduce flood of fcrscn1 trace records on multi-element RSCN
ceph: fix use-after-free on symlink traversal
usb: u132-hcd: fix resource leak
scsi: qla4xxx: fix a potential NULL pointer dereference
net: ethernet: ti: fix possible object reference leak
net: ibm: fix possible object reference leak
net: xilinx: fix possible object reference leak
net: ks8851: Set initial carrier state to down
net: ks8851: Delay requesting IRQ until opened
net: ks8851: Reassert reset pin if chip ID check fails
net: ks8851: Dequeue RX packets explicitly
ARM: dts: pfla02: increase phy reset duration
usb: gadget: net2272: Fix net2272_dequeue()
usb: gadget: net2280: Fix net2280_dequeue()
usb: gadget: net2280: Fix overrun of OUT messages
sc16is7xx: missing unregister/delete driver on error in sc16is7xx_init()
netfilter: bridge: set skb transport_header before entering NF_INET_PRE_ROUTING
qlcnic: Avoid potential NULL pointer dereference
usbnet: ipheth: fix potential null pointer dereference in ipheth_carrier_set
usbnet: ipheth: prevent TX queue timeouts when device not ready
Documentation: Add nospectre_v1 parameter
powerpc/fsl: Add FSL_PPC_BOOK3E as supported arch for nospectre_v2 boot arg
powerpc/fsl: Fixed warning: orphan section `__btb_flush_fixup'
powerpc/fsl: Sanitize the syscall table for NXP PowerPC 32 bit platforms
powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit)
powerpc/fsl: Emulate SPRN_BUCSR register
powerpc/fsl: Flush branch predictor when entering KVM
powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used
ipv4: set the tcp_min_rtt_wlen range from 0 to one day
net: stmmac: move stmmac_check_ether_addr() to driver probe
team: fix possible recursive locking when add slaves
ipv4: add sanity checks in ipv4_link_failure()
Revert "block/loop: Use global lock for ioctl() operation."
bpf: reject wrong sized filters earlier
tipc: check link name with right length in tipc_nl_compat_link_set
tipc: check bearer name with right length in tipc_nl_compat_bearer_enable
netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON
NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family.
fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
intel_th: gth: Fix an off-by-one in output unassigning
slip: make slhc_free() silently accept an error pointer
tipc: handle the err returned from cmd header function
powerpc/fsl: Fix the flush of branch predictor.
powerpc/security: Fix spectre_v2 reporting
powerpc/fsl: Update Spectre v2 reporting
powerpc/fsl: Flush the branch predictor at each kernel entry (64bit)
powerpc/fsl: Add nospectre_v2 command line argument
powerpc/fsl: Fix spectre_v2 mitigations reporting
powerpc/fsl: Add macro to flush the branch predictor
powerpc/fsl: Add infrastructure to fixup branch predictor flush
powerpc: Avoid code patching freed init sections
powerpc/powernv: Query firmware for count cache flush settings
powerpc/pseries: Query hypervisor for count cache flush settings
powerpc/64s: Add support for software count cache flush
powerpc/64s: Add new security feature flags for count cache flush
powerpc/asm: Add a patch_site macro & helpers for patching instructions
powerpc/fsl: Add barrier_nospec implementation for NXP PowerPC Book3E
powerpc/64: Make meltdown reporting Book3S 64 specific
powerpc/64: Call setup_barrier_nospec() from setup_arch()
powerpc/64: Add CONFIG_PPC_BARRIER_NOSPEC
powerpc/64: Make stf barrier PPC_BOOK3S_64 specific.
powerpc/64: Disable the speculation barrier from the command line
powerpc64s: Show ori31 availability in spectre_v1 sysfs file not v2
powerpc/64s: Enhance the information in cpu_show_spectre_v1()
powerpc: Use barrier_nospec in copy_from_user()
powerpc/64: Use barrier_nospec in syscall entry
powerpc/64s: Enable barrier_nospec based on firmware settings
powerpc/64s: Patch barrier_nospec in modules
powerpc/64s: Add support for ori barrier_nospec patching
powerpc/64s: Add barrier_nospec
powerpc/64s: Add support for a store forwarding barrier at kernel entry/exit
powerpc/64s: Fix section mismatch warnings from setup_rfi_flush()
powerpc/pseries: Restore default security feature flags on setup
powerpc: Move default security feature flags
powerpc/pseries: Fix clearing of security feature flags
powerpc/64s: Wire up cpu_show_spectre_v2()
powerpc/64s: Wire up cpu_show_spectre_v1()
powerpc/pseries: Use the security flags in pseries_setup_rfi_flush()
powerpc/powernv: Use the security flags in pnv_setup_rfi_flush()
powerpc/64s: Enhance the information in cpu_show_meltdown()
powerpc/64s: Move cpu_show_meltdown()
powerpc/powernv: Set or clear security feature flags
powerpc/pseries: Set or clear security feature flags
powerpc: Add security feature flags for Spectre/Meltdown
powerpc/rfi-flush: Call setup_rfi_flush() after LPM migration
powerpc/pseries: Add new H_GET_CPU_CHARACTERISTICS flags
powerpc/rfi-flush: Differentiate enabled and patched flush types
powerpc/rfi-flush: Always enable fallback flush on pseries
powerpc/rfi-flush: Make it possible to call setup_rfi_flush() again
powerpc/rfi-flush: Move the logic to avoid a redo into the debugfs code
powerpc/powernv: Support firmware disable of RFI flush
powerpc/pseries: Support firmware disable of RFI flush
powerpc/64s: Improve RFI L1-D cache flush fallback
powerpc/xmon: Add RFI flush related fields to paca dump
USB: Consolidate LPM checks to avoid enabling LPM twice
USB: Add new USB LPM helpers
sunrpc: don't mark uninitialised items as VALID.
nfsd: Don't release the callback slot unless it was actually held
ceph: fix ci->i_head_snapc leak
ceph: ensure d_name stability in ceph_dentry_hash()
sched/numa: Fix a possible divide-by-zero
trace: Fix preempt_enable_no_resched() abuse
MIPS: scall64-o32: Fix indirect syscall number load
cifs: do not attempt cifs operation on smb2+ rename error
KVM: fail KVM_SET_VCPU_EVENTS with invalid exception number
kbuild: simplify ld-option implementation
ANDROID: cuttlefish_defconfig: Disable DEVTMPFS
ANDROID: Move from clang r349610 to r353983c.
f2fs: fix to avoid accessing xattr across the boundary
f2fs: fix to avoid potential race on sbi->unusable_block_count access/update
f2fs: add tracepoint for f2fs_filemap_fault()
f2fs: introduce DATA_GENERIC_ENHANCE
f2fs: fix to handle error in f2fs_disable_checkpoint()
f2fs: remove redundant check in f2fs_file_write_iter()
f2fs: fix to be aware of readonly device in write_checkpoint()
f2fs: fix to skip recovery on readonly device
f2fs: fix to consider multiple device for readonly check
f2fs: relocate chksum_offset for large_nat_bitmap feature
f2fs: allow unfixed f2fs_checkpoint.checksum_offset
f2fs: Replace spaces with tab
f2fs: insert space before the open parenthesis '('
f2fs: allow address pointer number of dnode aligning to specified size
f2fs: introduce f2fs_read_single_page() for cleanup
f2fs: mark is_extension_exist() inline
f2fs: fix to set FI_UPDATE_WRITE correctly
f2fs: fix to avoid panic in f2fs_inplace_write_data()
f2fs: fix to do sanity check on valid block count of segment
f2fs: fix to do sanity check on valid node/block count
f2fs: fix to avoid panic in do_recover_data()
f2fs: fix to do sanity check on free nid
f2fs: fix to do checksum even if inode page is uptodate
f2fs: fix to avoid panic in f2fs_remove_inode_page()
f2fs: fix to clear dirty inode in error path of f2fs_iget()
f2fs: remove new blank line of f2fs kernel message
f2fs: fix wrong __is_meta_io() macro
f2fs: fix to avoid panic in dec_valid_node_count()
f2fs: fix to avoid panic in dec_valid_block_count()
f2fs: fix to use inline space only if inline_xattr is enable
f2fs: fix to retrieve inline xattr space
f2fs: fix error path of recovery
f2fs: fix to avoid deadloop in foreground GC
f2fs: data: fix warning Using plain integer as NULL pointer
f2fs: add tracepoint for f2fs_file_write_iter()
f2fs: add comment for conditional compilation statement
f2fs: fix potential recursive call when enabling data_flush
f2fs: improve discard handling with multi-device volumes
f2fs: Reduce zoned block device memory usage
f2fs: Fix use of number of devices
Sleepable function handle_lmk_event() is called in atomic context,
so ignored the commit "ANDROID: Communicates LMK events to userland
where they can be logged"
Conflicts:
arch/powerpc/include/asm/uaccess.h
kernel/cpu.c
kernel/irq/manage.c
kernel/time/timer_stats.c
net/ipv4/sysctl_net_ipv4.c
Change-Id: I3e5bd447057b44a28fc5000403198ae0fd644480
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.180
kbuild: simplify ld-option implementation
KVM: fail KVM_SET_VCPU_EVENTS with invalid exception number
cifs: do not attempt cifs operation on smb2+ rename error
MIPS: scall64-o32: Fix indirect syscall number load
trace: Fix preempt_enable_no_resched() abuse
sched/numa: Fix a possible divide-by-zero
ceph: ensure d_name stability in ceph_dentry_hash()
ceph: fix ci->i_head_snapc leak
nfsd: Don't release the callback slot unless it was actually held
sunrpc: don't mark uninitialised items as VALID.
USB: Add new USB LPM helpers
USB: Consolidate LPM checks to avoid enabling LPM twice
powerpc/xmon: Add RFI flush related fields to paca dump
powerpc/64s: Improve RFI L1-D cache flush fallback
powerpc/pseries: Support firmware disable of RFI flush
powerpc/powernv: Support firmware disable of RFI flush
powerpc/rfi-flush: Move the logic to avoid a redo into the debugfs code
powerpc/rfi-flush: Make it possible to call setup_rfi_flush() again
powerpc/rfi-flush: Always enable fallback flush on pseries
powerpc/rfi-flush: Differentiate enabled and patched flush types
powerpc/pseries: Add new H_GET_CPU_CHARACTERISTICS flags
powerpc/rfi-flush: Call setup_rfi_flush() after LPM migration
powerpc: Add security feature flags for Spectre/Meltdown
powerpc/pseries: Set or clear security feature flags
powerpc/powernv: Set or clear security feature flags
powerpc/64s: Move cpu_show_meltdown()
powerpc/64s: Enhance the information in cpu_show_meltdown()
powerpc/powernv: Use the security flags in pnv_setup_rfi_flush()
powerpc/pseries: Use the security flags in pseries_setup_rfi_flush()
powerpc/64s: Wire up cpu_show_spectre_v1()
powerpc/64s: Wire up cpu_show_spectre_v2()
powerpc/pseries: Fix clearing of security feature flags
powerpc: Move default security feature flags
powerpc/pseries: Restore default security feature flags on setup
powerpc/64s: Fix section mismatch warnings from setup_rfi_flush()
powerpc/64s: Add support for a store forwarding barrier at kernel entry/exit
powerpc/64s: Add barrier_nospec
powerpc/64s: Add support for ori barrier_nospec patching
powerpc/64s: Patch barrier_nospec in modules
powerpc/64s: Enable barrier_nospec based on firmware settings
powerpc/64: Use barrier_nospec in syscall entry
powerpc: Use barrier_nospec in copy_from_user()
powerpc/64s: Enhance the information in cpu_show_spectre_v1()
powerpc64s: Show ori31 availability in spectre_v1 sysfs file not v2
powerpc/64: Disable the speculation barrier from the command line
powerpc/64: Make stf barrier PPC_BOOK3S_64 specific.
powerpc/64: Add CONFIG_PPC_BARRIER_NOSPEC
powerpc/64: Call setup_barrier_nospec() from setup_arch()
powerpc/64: Make meltdown reporting Book3S 64 specific
powerpc/fsl: Add barrier_nospec implementation for NXP PowerPC Book3E
powerpc/asm: Add a patch_site macro & helpers for patching instructions
powerpc/64s: Add new security feature flags for count cache flush
powerpc/64s: Add support for software count cache flush
powerpc/pseries: Query hypervisor for count cache flush settings
powerpc/powernv: Query firmware for count cache flush settings
powerpc: Avoid code patching freed init sections
powerpc/fsl: Add infrastructure to fixup branch predictor flush
powerpc/fsl: Add macro to flush the branch predictor
powerpc/fsl: Fix spectre_v2 mitigations reporting
powerpc/fsl: Add nospectre_v2 command line argument
powerpc/fsl: Flush the branch predictor at each kernel entry (64bit)
powerpc/fsl: Update Spectre v2 reporting
powerpc/security: Fix spectre_v2 reporting
powerpc/fsl: Fix the flush of branch predictor.
tipc: handle the err returned from cmd header function
slip: make slhc_free() silently accept an error pointer
intel_th: gth: Fix an off-by-one in output unassigning
fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family.
netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON
tipc: check bearer name with right length in tipc_nl_compat_bearer_enable
tipc: check link name with right length in tipc_nl_compat_link_set
bpf: reject wrong sized filters earlier
Revert "block/loop: Use global lock for ioctl() operation."
ipv4: add sanity checks in ipv4_link_failure()
team: fix possible recursive locking when add slaves
net: stmmac: move stmmac_check_ether_addr() to driver probe
ipv4: set the tcp_min_rtt_wlen range from 0 to one day
powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used
powerpc/fsl: Flush branch predictor when entering KVM
powerpc/fsl: Emulate SPRN_BUCSR register
powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit)
powerpc/fsl: Sanitize the syscall table for NXP PowerPC 32 bit platforms
powerpc/fsl: Fixed warning: orphan section `__btb_flush_fixup'
powerpc/fsl: Add FSL_PPC_BOOK3E as supported arch for nospectre_v2 boot arg
Documentation: Add nospectre_v1 parameter
usbnet: ipheth: prevent TX queue timeouts when device not ready
usbnet: ipheth: fix potential null pointer dereference in ipheth_carrier_set
qlcnic: Avoid potential NULL pointer dereference
netfilter: bridge: set skb transport_header before entering NF_INET_PRE_ROUTING
sc16is7xx: missing unregister/delete driver on error in sc16is7xx_init()
usb: gadget: net2280: Fix overrun of OUT messages
usb: gadget: net2280: Fix net2280_dequeue()
usb: gadget: net2272: Fix net2272_dequeue()
ARM: dts: pfla02: increase phy reset duration
net: ks8851: Dequeue RX packets explicitly
net: ks8851: Reassert reset pin if chip ID check fails
net: ks8851: Delay requesting IRQ until opened
net: ks8851: Set initial carrier state to down
net: xilinx: fix possible object reference leak
net: ibm: fix possible object reference leak
net: ethernet: ti: fix possible object reference leak
scsi: qla4xxx: fix a potential NULL pointer dereference
usb: u132-hcd: fix resource leak
ceph: fix use-after-free on symlink traversal
scsi: zfcp: reduce flood of fcrscn1 trace records on multi-element RSCN
libata: fix using DMA buffers on stack
kconfig/[mn]conf: handle backspace (^H) key
vfio/type1: Limit DMA mappings per container
ALSA: line6: use dynamic buffers
ipv4: ip_do_fragment: Preserve skb_iif during fragmentation
ipv6/flowlabel: wait rcu grace period before put_pid()
ipv6: invert flowlabel sharing check in process and user mode
bnxt_en: Improve multicast address setup logic.
packet: validate msg_namelen in send directly
USB: yurex: Fix protection fault after device removal
USB: w1 ds2490: Fix bug caused by improper use of altsetting array
USB: core: Fix unterminated string returned by usb_string()
USB: core: Fix bug caused by duplicate interface PM usage counter
HID: debug: fix race condition with between rdesc_show() and device removal
rtc: sh: Fix invalid alarm warning for non-enabled alarm
igb: Fix WARN_ONCE on runtime suspend
bonding: show full hw address in sysfs for slave entries
jffs2: fix use-after-free on symlink traversal
debugfs: fix use-after-free on symlink traversal
rtc: da9063: set uie_unsupported when relevant
vfio/pci: use correct format characters
scsi: storvsc: Fix calculation of sub-channel count
net: hns: Use NAPI_POLL_WEIGHT for hns driver
net: hns: Fix WARNING when remove HNS driver with SMMU enabled
hugetlbfs: fix memory leak for resv_map
xsysace: Fix error handling in ace_setup
ARM: orion: don't use using 64-bit DMA masks
ARM: iop: don't use using 64-bit DMA masks
usb: usbip: fix isoc packet num validation in get_pipe
staging: iio: adt7316: allow adt751x to use internal vref for all dacs
staging: iio: adt7316: fix the dac read calculation
staging: iio: adt7316: fix the dac write calculation
Input: snvs_pwrkey - initialize necessary driver data before enabling IRQ
selinux: never allow relabeling on context mounts
x86/mce: Improve error message when kernel cannot recover, p2
media: v4l2: i2c: ov7670: Fix PLL bypass register values
scsi: libsas: fix a race condition when smp task timeout
ASoC:soc-pcm:fix a codec fixup issue in TDM case
ASoC: cs4270: Set auto-increment bit for register writes
ASoC: tlv320aic32x4: Fix Common Pins
perf/x86/intel: Fix handling of wakeup_events for multi-entry PEBS
scsi: csiostor: fix missing data copy in csio_scsi_err_handler()
iommu/amd: Set exclusion range correctly
genirq: Prevent use-after-free and work list corruption
usb: dwc3: Fix default lpm_nyet_threshold value
scsi: qla2xxx: Fix incorrect region-size setting in optrom SYSFS routines
Bluetooth: hidp: fix buffer overflow
Bluetooth: Align minimum encryption key size for LE and BR/EDR connections
UAS: fix alignment of scatter/gather segments
ipv6: fix a potential deadlock in do_ipv6_setsockopt()
ASoC: Intel: avoid Oops if DMA setup fails
timer/debug: Change /proc/timer_stats from 0644 to 0600
netfilter: compat: initialize all fields in xt_init
platform/x86: sony-laptop: Fix unintentional fall-through
iio: adc: xilinx: fix potential use-after-free on remove
HID: input: add mapping for Expose/Overview key
HID: input: add mapping for keyboard Brightness Up/Down/Toggle keys
libnvdimm/btt: Fix a kmemdup failure check
s390/dasd: Fix capacity calculation for large volumes
s390/3270: fix lockdep false positive on view->lock
KVM: x86: avoid misreporting level-triggered irqs as edge-triggered in tracing
tools lib traceevent: Fix missing equality check for strcmp
init: initialize jump labels before command line option parsing
ipvs: do not schedule icmp errors from tunnels
s390: ctcm: fix ctcm_new_device error return code
selftests/net: correct the return value for run_netsocktests
gpu: ipu-v3: dp: fix CSC handling
cw1200: fix missing unlock on error in cw1200_hw_scan()
x86/vdso: Pass --eh-frame-hdr to the linker
Don't jump to compute_result state from check_result state
locking/static_keys: Provide DECLARE and well as DEFINE macros
x86/microcode/intel: Add a helper which gives the microcode revision
x86: stop exporting msr-index.h to userland
bitops: avoid integer overflow in GENMASK(_ULL)
x86/microcode/intel: Check microcode revision before updating sibling threads
x86/MCE: Save microcode revision in machine check records
x86/cpufeatures: Hide AMD-specific speculation flags
x86/speculation: Support Enhanced IBRS on future CPUs
x86/speculation: Simplify the CPU bug detection logic
x86/bugs: Add AMD's variant of SSB_NO
x86/bugs: Add AMD's SPEC_CTRL MSR usage
x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features
locking/atomics, asm-generic: Move some macros from <linux/bitops.h> to a new <linux/bits.h> file
x86/bugs: Fix the AMD SSBD usage of the SPEC_CTRL MSR
x86/speculation: Remove SPECTRE_V2_IBRS in enum spectre_v2_mitigation
x86/microcode: Make sure boot_cpu_data.microcode is up-to-date
x86/microcode: Update the new microcode revision unconditionally
x86/cpu: Sanitize FAM6_ATOM naming
KVM: x86: SVM: Call x86_spec_ctrl_set_guest/host() with interrupts disabled
x86/mm: Use WRITE_ONCE() when setting PTEs
x86/speculation: Apply IBPB more strictly to avoid cross-process data leak
x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
x86/speculation: Propagate information about RSB filling mitigation to sysfs
x86/speculation: Update the TIF_SSBD comment
x86/speculation: Clean up spectre_v2_parse_cmdline()
x86/speculation: Remove unnecessary ret variable in cpu_show_common()
x86/speculation: Move STIPB/IBPB string conditionals out of cpu_show_common()
x86/speculation: Disable STIBP when enhanced IBRS is in use
x86/speculation: Rename SSBD update functions
x86/speculation: Reorganize speculation control MSRs update
x86/Kconfig: Select SCHED_SMT if SMP enabled
sched: Add sched_smt_active()
x86/speculation: Rework SMT state change
x86/speculation: Reorder the spec_v2 code
x86/speculation: Mark string arrays const correctly
x86/speculataion: Mark command line parser data __initdata
x86/speculation: Unify conditional spectre v2 print functions
x86/speculation: Add command line control for indirect branch speculation
x86/speculation: Prepare for per task indirect branch speculation control
x86/process: Consolidate and simplify switch_to_xtra() code
x86/speculation: Avoid __switch_to_xtra() calls
x86/speculation: Prepare for conditional IBPB in switch_mm()
x86/speculation: Split out TIF update
x86/speculation: Prepare arch_smt_update() for PRCTL mode
x86/speculation: Prevent stale SPEC_CTRL msr content
x86/speculation: Add prctl() control for indirect branch speculation
x86/speculation: Enable prctl mode for spectre_v2_user
x86/speculation: Add seccomp Spectre v2 user space protection mode
x86/speculation: Provide IBPB always command line options
kvm: x86: Report STIBP on GET_SUPPORTED_CPUID
x86/msr-index: Cleanup bit defines
x86/speculation: Consolidate CPU whitelists
x86/speculation/mds: Add basic bug infrastructure for MDS
x86/speculation/mds: Add BUG_MSBDS_ONLY
x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests
x86/speculation/mds: Add mds_clear_cpu_buffers()
x86/speculation/mds: Clear CPU buffers on exit to user
x86/speculation/mds: Conditionally clear CPU buffers on idle entry
x86/speculation/mds: Add mitigation control for MDS
x86/speculation/l1tf: Document l1tf in sysfs
x86/speculation/mds: Add sysfs reporting for MDS
x86/speculation/mds: Add mitigation mode VMWERV
Documentation: Move L1TF to separate directory
Documentation: Add MDS vulnerability documentation
x86/cpu/bugs: Use __initconst for 'const' init data
x86/speculation: Move arch_smt_update() call to after mitigation decisions
x86/speculation/mds: Add SMT warning message
x86/speculation/mds: Fix comment
x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off
cpu/speculation: Add 'mitigations=' cmdline option
x86/speculation: Support 'mitigations=' cmdline option
x86/speculation/mds: Add 'mitigations=' support for MDS
x86/mds: Add MDSUM variant to the MDS documentation
Documentation: Correct the possible MDS sysfs values
x86/speculation/mds: Fix documentation typo
x86/bugs: Change L1TF mitigation string to match upstream
USB: serial: use variable for status
USB: serial: fix unthrottle races
powerpc/64s: Include cpu header
bridge: Fix error path for kobject_init_and_add()
net: ucc_geth - fix Oops when changing number of buffers in the ring
packet: Fix error path in packet_init
vlan: disable SIOCSHWTSTAMP in container
vrf: sit mtu should not be updated when vrf netdev is the link
ipv4: Fix raw socket lookup for local traffic
bonding: fix arp_validate toggling in active-backup mode
drivers/virt/fsl_hypervisor.c: dereferencing error pointers in ioctl
drivers/virt/fsl_hypervisor.c: prevent integer overflow in ioctl
powerpc/booke64: set RI in default MSR
powerpc/lib: fix book3s/32 boot failure due to code patching
Linux 4.4.180
Change-Id: If2d2fdd451b55c002666b32022b269cec9545607
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 22dd8365088b6403630b82423cf906491859b65e upstream.
In virtualized environments it can happen that the host has the microcode
update which utilizes the VERW instruction to clear CPU buffers, but the
hypervisor is not yet updated to expose the X86_FEATURE_MD_CLEAR CPUID bit
to guests.
Introduce an internal mitigation mode VMWERV which enables the invocation
of the CPU buffer clearing even if X86_FEATURE_MD_CLEAR is not set. If the
system has no updated microcode this results in a pointless execution of
the VERW instruction wasting a few CPU cycles. If the microcode is updated,
but not exposed to a guest then the CPU buffers will be cleared.
That said: Virtual Machines Will Eventually Receive Vaccine
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Jon Masters <jcm@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit bc1241700acd82ec69fde98c5763ce51086269f8 upstream.
Now that the mitigations are in place, add a command line parameter to
control the mitigation, a mitigation selector function and a SMT update
mechanism.
This is the minimal straight forward initial implementation which just
provides an always on/off mode. The command line parameter is:
mds=[full|off]
This is consistent with the existing mitigations for other speculative
hardware vulnerabilities.
The idle invocation is dynamically updated according to the SMT state of
the system similar to the dynamic update of the STIBP mitigation. The idle
mitigation is limited to CPUs which are only affected by MSBDS and not any
other variant, because the other variants cannot be mitigated on SMT
enabled systems.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Jon Masters <jcm@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
[bwh: Backported to 4.4:
- Drop " __ro_after_init"
- Adjust filename, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 07f07f55a29cb705e221eda7894dd67ab81ef343 upstream.
Add a static key which controls the invocation of the CPU buffer clear
mechanism on idle entry. This is independent of other MDS mitigations
because the idle entry invocation to mitigate the potential leakage due to
store buffer repartitioning is only necessary on SMT systems.
Add the actual invocations to the different halt/mwait variants which
covers all usage sites. mwaitx is not patched as it's not available on
Intel CPUs.
The buffer clear is only invoked before entering the C-State to prevent
that stale data from the idling CPU is spilled to the Hyper-Thread sibling
after the Store buffer got repartitioned and all entries are available to
the non idle sibling.
When coming out of idle the store buffer is partitioned again so each
sibling has half of it available. Now CPU which returned from idle could be
speculatively exposed to contents of the sibling, but the buffers are
flushed either on exit to user space or on VMENTER.
When later on conditional buffer clearing is implemented on top of this,
then there is no action required either because before returning to user
space the context switch will set the condition flag which causes a flush
on the return to user path.
Note, that the buffer clearing on idle is only sensible on CPUs which are
solely affected by MSBDS and not any other variant of MDS because the other
MDS variants cannot be mitigated when SMT is enabled, so the buffer
clearing on idle would be a window dressing exercise.
This intentionally does not handle the case in the acpi/processor_idle
driver which uses the legacy IO port interface for C-State transitions for
two reasons:
- The acpi/processor_idle driver was replaced by the intel_idle driver
almost a decade ago. Anything Nehalem upwards supports it and defaults
to that new driver.
- The legacy IO port interface is likely to be used on older and therefore
unaffected CPUs or on systems which do not receive microcode updates
anymore, so there is no point in adding that.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Jon Masters <jcm@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 04dcbdb8057827b043b3c71aa397c4c63e67d086 upstream.
Add a static key which controls the invocation of the CPU buffer clear
mechanism on exit to user space and add the call into
prepare_exit_to_usermode() and do_nmi() right before actually returning.
Add documentation which kernel to user space transition this covers and
explain why some corner cases are not mitigated.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Jon Masters <jcm@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6a9e529272517755904b7afa639f6db59ddb793e upstream.
The Microarchitectural Data Sampling (MDS) vulernabilities are mitigated by
clearing the affected CPU buffers. The mechanism for clearing the buffers
uses the unused and obsolete VERW instruction in combination with a
microcode update which triggers a CPU buffer clear when VERW is executed.
Provide a inline function with the assembly magic. The argument of the VERW
instruction must be a memory operand as documented:
"MD_CLEAR enumerates that the memory-operand variant of VERW (for
example, VERW m16) has been extended to also overwrite buffers affected
by MDS. This buffer overwriting functionality is not guaranteed for the
register operand variant of VERW."
Documentation also recommends to use a writable data segment selector:
"The buffer overwriting occurs regardless of the result of the VERW
permission check, as well as when the selector is null or causes a
descriptor load segment violation. However, for lowest latency we
recommend using a selector that indicates a valid writable data
segment."
Add x86 specific documentation about MDS and the internal workings of the
mitigation.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Jon Masters <jcm@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
[bwh: Backported to 4.4: drop changes to doc index and configuration]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e261f209c3666e842fd645a1e31f001c3a26def9 upstream.
This bug bit is set on CPUs which are only affected by Microarchitectural
Store Buffer Data Sampling (MSBDS) and not by any other MDS variant.
This is important because the Store Buffers are partitioned between
Hyper-Threads so cross thread forwarding is not possible. But if a thread
enters or exits a sleep state the store buffer is repartitioned which can
expose data from one thread to the other. This transition can be mitigated.
That means that for CPUs which are only affected by MSBDS SMT can be
enabled, if the CPU is not affected by other SMT sensitive vulnerabilities,
e.g. L1TF. The XEON PHI variants fall into that category. Also the
Silvermont/Airmont ATOMs, but for them it's not really relevant as they do
not support SMT, but mark them for completeness sake.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Jon Masters <jcm@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
[bwh: Backported to 4.4: adjust context, indentation]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ed5194c2732c8084af9fd159c146ea92bf137128 upstream.
Microarchitectural Data Sampling (MDS), is a class of side channel attacks
on internal buffers in Intel CPUs. The variants are:
- Microarchitectural Store Buffer Data Sampling (MSBDS) (CVE-2018-12126)
- Microarchitectural Fill Buffer Data Sampling (MFBDS) (CVE-2018-12130)
- Microarchitectural Load Port Data Sampling (MLPDS) (CVE-2018-12127)
MSBDS leaks Store Buffer Entries which can be speculatively forwarded to a
dependent load (store-to-load forwarding) as an optimization. The forward
can also happen to a faulting or assisting load operation for a different
memory address, which can be exploited under certain conditions. Store
buffers are partitioned between Hyper-Threads so cross thread forwarding is
not possible. But if a thread enters or exits a sleep state the store
buffer is repartitioned which can expose data from one thread to the other.
MFBDS leaks Fill Buffer Entries. Fill buffers are used internally to manage
L1 miss situations and to hold data which is returned or sent in response
to a memory or I/O operation. Fill buffers can forward data to a load
operation and also write data to the cache. When the fill buffer is
deallocated it can retain the stale data of the preceding operations which
can then be forwarded to a faulting or assisting load operation, which can
be exploited under certain conditions. Fill buffers are shared between
Hyper-Threads so cross thread leakage is possible.
MLDPS leaks Load Port Data. Load ports are used to perform load operations
from memory or I/O. The received data is then forwarded to the register
file or a subsequent operation. In some implementations the Load Port can
contain stale data from a previous operation which can be forwarded to
faulting or assisting loads under certain conditions, which again can be
exploited eventually. Load ports are shared between Hyper-Threads so cross
thread leakage is possible.
All variants have the same mitigation for single CPU thread case (SMT off),
so the kernel can treat them as one MDS issue.
Add the basic infrastructure to detect if the current CPU is affected by
MDS.
[ tglx: Rewrote changelog ]
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Jon Masters <jcm@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
[bwh: Backported to 4.4: adjust context, indentation]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d8eabc37310a92df40d07c5a8afc53cebf996716 upstream.
Greg pointed out that speculation related bit defines are using (1 << N)
format instead of BIT(N). Aside of that (1 << N) is wrong as it should use
1UL at least.
Clean it up.
[ Josh Poimboeuf: Fix tools build ]
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Jon Masters <jcm@redhat.com>
Tested-by: Jon Masters <jcm@redhat.com>
[bwh: Backported to 4.4:
- Drop change to x86_energy_perf_policy, which doesn't use msr-index.h here
- Drop changes to flush MSRs which we haven't defined]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6b3e64c237c072797a9ec918654a60e3a46488e2 upstream.
If 'prctl' mode of user space protection from spectre v2 is selected
on the kernel command-line, STIBP and IBPB are applied on tasks which
restrict their indirect branch speculation via prctl.
SECCOMP enables the SSBD mitigation for sandboxed tasks already, so it
makes sense to prevent spectre v2 user space to user space attacks as
well.
The Intel mitigation guide documents how STIPB works:
Setting bit 1 (STIBP) of the IA32_SPEC_CTRL MSR on a logical processor
prevents the predicted targets of indirect branches on any logical
processor of that core from being controlled by software that executes
(or executed previously) on another logical processor of the same core.
Ergo setting STIBP protects the task itself from being attacked from a task
running on a different hyper-thread and protects the tasks running on
different hyper-threads from being attacked.
While the document suggests that the branch predictors are shielded between
the logical processors, the observed performance regressions suggest that
STIBP simply disables the branch predictor more or less completely. Of
course the document wording is vague, but the fact that there is also no
requirement for issuing IBPB when STIBP is used points clearly in that
direction. The kernel still issues IBPB even when STIBP is used until Intel
clarifies the whole mechanism.
IBPB is issued when the task switches out, so malicious sandbox code cannot
mistrain the branch predictor for the next user space task on the same
logical processor.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20181125185006.051663132@linutronix.de
[bwh: Backported to 4.4: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9137bb27e60e554dab694eafa4cca241fa3a694f upstream.
Add the PR_SPEC_INDIRECT_BRANCH option for the PR_GET_SPECULATION_CTRL and
PR_SET_SPECULATION_CTRL prctls to allow fine grained per task control of
indirect branch speculation via STIBP and IBPB.
Invocations:
Check indirect branch speculation status with
- prctl(PR_GET_SPECULATION_CTRL, PR_SPEC_INDIRECT_BRANCH, 0, 0, 0);
Enable indirect branch speculation with
- prctl(PR_SET_SPECULATION_CTRL, PR_SPEC_INDIRECT_BRANCH, PR_SPEC_ENABLE, 0, 0);
Disable indirect branch speculation with
- prctl(PR_SET_SPECULATION_CTRL, PR_SPEC_INDIRECT_BRANCH, PR_SPEC_DISABLE, 0, 0);
Force disable indirect branch speculation with
- prctl(PR_SET_SPECULATION_CTRL, PR_SPEC_INDIRECT_BRANCH, PR_SPEC_FORCE_DISABLE, 0, 0);
See Documentation/userspace-api/spec_ctrl.rst.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20181125185005.866780996@linutronix.de
[bwh: Backported to 4.4:
- Renumber the PFA flags
- Drop changes in tools/include/uapi/linux/prctl.h
- Adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit 6d991ba509ebcfcc908e009d1db51972a4f7a064 upstream.
The seccomp speculation control operates on all tasks of a process, but
only the current task of a process can update the MSR immediately. For the
other threads the update is deferred to the next context switch.
This creates the following situation with Process A and B:
Process A task 2 and Process B task 1 are pinned on CPU1. Process A task 2
does not have the speculation control TIF bit set. Process B task 1 has the
speculation control TIF bit set.
CPU0 CPU1
MSR bit is set
ProcB.T1 schedules out
ProcA.T2 schedules in
MSR bit is cleared
ProcA.T1
seccomp_update()
set TIF bit on ProcA.T2
ProcB.T1 schedules in
MSR is not updated <-- FAIL
This happens because the context switch code tries to avoid the MSR update
if the speculation control TIF bits of the incoming and the outgoing task
are the same. In the worst case ProcB.T1 and ProcA.T2 are the only tasks
scheduling back and forth on CPU1, which keeps the MSR stale forever.
In theory this could be remedied by IPIs, but chasing the remote task which
could be migrated is complex and full of races.
The straight forward solution is to avoid the asychronous update of the TIF
bit and defer it to the next context switch. The speculation control state
is stored in task_struct::atomic_flags by the prctl and seccomp updates
already.
Add a new TIF_SPEC_FORCE_UPDATE bit and set this after updating the
atomic_flags. Check the bit on context switch and force a synchronous
update of the speculation control if set. Use the same mechanism for
updating the current task.
Reported-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1811272247140.1875@nanos.tec.linutronix.de
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit 4c71a2b6fd7e42814aa68a6dec88abf3b42ea573 upstream.
The IBPB speculation barrier is issued from switch_mm() when the kernel
switches to a user space task with a different mm than the user space task
which ran last on the same CPU.
An additional optimization is to avoid IBPB when the incoming task can be
ptraced by the outgoing task. This optimization only works when switching
directly between two user space tasks. When switching from a kernel task to
a user space task the optimization fails because the previous task cannot
be accessed anymore. So for quite some scenarios the optimization is just
adding overhead.
The upcoming conditional IBPB support will issue IBPB only for user space
tasks which have the TIF_SPEC_IB bit set. This requires to handle the
following cases:
1) Switch from a user space task (potential attacker) which has
TIF_SPEC_IB set to a user space task (potential victim) which has
TIF_SPEC_IB not set.
2) Switch from a user space task (potential attacker) which has
TIF_SPEC_IB not set to a user space task (potential victim) which has
TIF_SPEC_IB set.
This needs to be optimized for the case where the IBPB can be avoided when
only kernel threads ran in between user space tasks which belong to the
same process.
The current check whether two tasks belong to the same context is using the
tasks context id. While correct, it's simpler to use the mm pointer because
it allows to mangle the TIF_SPEC_IB bit into it. The context id based
mechanism requires extra storage, which creates worse code.
When a task is scheduled out its TIF_SPEC_IB bit is mangled as bit 0 into
the per CPU storage which is used to track the last user space mm which was
running on a CPU. This bit can be used together with the TIF_SPEC_IB bit of
the incoming task to make the decision whether IBPB needs to be issued or
not to cover the two cases above.
As conditional IBPB is going to be the default, remove the dubious ptrace
check for the IBPB always case and simply issue IBPB always when the
process changes.
Move the storage to a different place in the struct as the original one
created a hole.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20181125185005.466447057@linutronix.de
[bwh: Backported to 4.4:
- Drop changes in initialize_tlbstate_and_flush()
- Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit 5635d99953f04b550738f6f4c1c532667c3fd872 upstream.
The TIF_SPEC_IB bit does not need to be evaluated in the decision to invoke
__switch_to_xtra() when:
- CONFIG_SMP is disabled
- The conditional STIPB mode is disabled
The TIF_SPEC_IB bit still controls IBPB in both cases so the TIF work mask
checks might invoke __switch_to_xtra() for nothing if TIF_SPEC_IB is the
only set bit in the work masks.
Optimize it out by masking the bit at compile time for CONFIG_SMP=n and at
run time when the static key controlling the conditional STIBP mode is
disabled.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20181125185005.374062201@linutronix.de
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit ff16701a29cba3aafa0bd1656d766813b2d0a811 upstream.
Move the conditional invocation of __switch_to_xtra() into an inline
function so the logic can be shared between 32 and 64 bit.
Remove the handthrough of the TSS pointer and retrieve the pointer directly
in the bitmap handling function. Use this_cpu_ptr() instead of the
per_cpu() indirection.
This is a preparatory change so integration of conditional indirect branch
speculation optimization happens only in one place.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20181125185005.280855518@linutronix.de
[bwh: Backported to 4.4:
- Use cpu_tss instead of cpu_tss_rw
- __switch_to() still uses the tss variable, so don't delete it
- Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit 5bfbe3ad5840d941b89bcac54b821ba14f50a0ba upstream.
To avoid the overhead of STIBP always on, it's necessary to allow per task
control of STIBP.
Add a new task flag TIF_SPEC_IB and evaluate it during context switch if
SMT is active and flag evaluation is enabled by the speculation control
code. Add the conditional evaluation to x86_virt_spec_ctrl() as well so the
guest/host switch works properly.
This has no effect because TIF_SPEC_IB cannot be set yet and the static key
which controls evaluation is off. Preparatory patch for adding the control
code.
[ tglx: Simplify the context switch logic and make the TIF evaluation
depend on SMP=y and on the static key controlling the conditional
update. Rename it to TIF_SPEC_IB because it controls both STIBP and
IBPB ]
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20181125185005.176917199@linutronix.de
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit fa1202ef224391b6f5b26cdd44cc50495e8fab54 upstream.
Add command line control for user space indirect branch speculation
mitigations. The new option is: spectre_v2_user=
The initial options are:
- on: Unconditionally enabled
- off: Unconditionally disabled
-auto: Kernel selects mitigation (default off for now)
When the spectre_v2= command line argument is either 'on' or 'off' this
implies that the application to application control follows that state even
if a contradicting spectre_v2_user= argument is supplied.
Originally-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20181125185005.082720373@linutronix.de
[bwh: Backported to 4.4:
- Don't use __ro_after_init or cpu_smt_control
- Adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit 26c4d75b234040c11728a8acb796b3a85ba7507c upstream.
During context switch, the SSBD bit in SPEC_CTRL MSR is updated according
to changes of the TIF_SSBD flag in the current and next running task.
Currently, only the bit controlling speculative store bypass disable in
SPEC_CTRL MSR is updated and the related update functions all have
"speculative_store" or "ssb" in their names.
For enhanced mitigation control other bits in SPEC_CTRL MSR need to be
updated as well, which makes the SSB names inadequate.
Rename the "speculative_store*" functions to a more generic name. No
functional change.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20181125185004.058866968@linutronix.de
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8eb729b77faf83ac4c1f363a9ad68d042415f24c upstream.
"Reduced Data Speculation" is an obsolete term. The correct new name is
"Speculative store bypass disable" - which is abbreviated into SSBD.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Casey Schaufler <casey.schaufler@intel.com>
Cc: Asit Mallick <asit.k.mallick@intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Waiman Long <longman9394@gmail.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Dave Stewart <david.c.stewart@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20181125185003.593893901@linutronix.de
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9bc4f28af75a91aea0ae383f50b0a430c4509303 upstream.
When page-table entries are set, the compiler might optimize their
assignment by using multiple instructions to set the PTE. This might
turn into a security hazard if the user somehow manages to use the
interim PTE. L1TF does not make our lives easier, making even an interim
non-present PTE a security hazard.
Using WRITE_ONCE() to set PTEs and friends should prevent this potential
security hazard.
I skimmed the differences in the binary with and without this patch. The
differences are (obviously) greater when CONFIG_PARAVIRT=n as more
code optimizations are possible. For better and worse, the impact on the
binary with this patch is pretty small. Skimming the code did not cause
anything to jump out as a security hazard, but it seems that at least
move_soft_dirty_pte() caused set_pte_at() to use multiple writes.
Signed-off-by: Nadav Amit <namit@vmware.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/20180902181451.80520-1-namit@vmware.com
[bwh: Backported to 4.4:
- Drop changes in pmdp_establish(), native_set_p4d(), pudp_set_access_flags()
- Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f2c4db1bd80720cd8cb2a5aa220d9bc9f374f04e upstream.
Going primarily by:
https://en.wikipedia.org/wiki/List_of_Intel_Atom_microprocessors
with additional information gleaned from other related pages; notably:
- Bonnell shrink was called Saltwell
- Moorefield is the Merriefield refresh which makes it Airmont
The general naming scheme is: FAM6_ATOM_UARCH_SOCTYPE
for i in `git grep -l FAM6_ATOM` ; do
sed -i -e 's/ATOM_PINEVIEW/ATOM_BONNELL/g' \
-e 's/ATOM_LINCROFT/ATOM_BONNELL_MID/' \
-e 's/ATOM_PENWELL/ATOM_SALTWELL_MID/g' \
-e 's/ATOM_CLOVERVIEW/ATOM_SALTWELL_TABLET/g' \
-e 's/ATOM_CEDARVIEW/ATOM_SALTWELL/g' \
-e 's/ATOM_SILVERMONT1/ATOM_SILVERMONT/g' \
-e 's/ATOM_SILVERMONT2/ATOM_SILVERMONT_X/g' \
-e 's/ATOM_MERRIFIELD/ATOM_SILVERMONT_MID/g' \
-e 's/ATOM_MOOREFIELD/ATOM_AIRMONT_MID/g' \
-e 's/ATOM_DENVERTON/ATOM_GOLDMONT_X/g' \
-e 's/ATOM_GEMINI_LAKE/ATOM_GOLDMONT_PLUS/g' ${i}
done
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: dave.hansen@linux.intel.com
Cc: len.brown@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[bwh: Backported to 4.4:
- Drop changes to CPU IDs that weren't already included
- Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d9f4426c73002957be5dd39936f44a09498f7560 upstream.
SPECTRE_V2_IBRS in enum spectre_v2_mitigation is never used. Remove it.
Signed-off-by: Jiang Biao <jiang.biao2@zte.com.cn>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: hpa@zytor.com
Cc: dwmw2@amazon.co.uk
Cc: konrad.wilk@oracle.com
Cc: bp@suse.de
Cc: zhong.weidong@zte.com.cn
Link: https://lkml.kernel.org/r/1531872194-39207-1-git-send-email-jiang.biao2@zte.com.cn
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6ac2f49edb1ef5446089c7c660017732886d62d6 upstream.
The AMD document outlining the SSBD handling
124441_AMD64_SpeculativeStoreBypassDisable_Whitepaper_final.pdf
mentions that if CPUID 8000_0008.EBX[24] is set we should be using
the SPEC_CTRL MSR (0x48) over the VIRT SPEC_CTRL MSR (0xC001_011f)
for speculative store bypass disable.
This in effect means we should clear the X86_FEATURE_VIRT_SSBD
flag so that we would prefer the SPEC_CTRL MSR.
See the document titled:
124441_AMD64_SpeculativeStoreBypassDisable_Whitepaper_final.pdf
A copy of this document is available at
https://bugzilla.kernel.org/show_bug.cgi?id=199889
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Cc: kvm@vger.kernel.org
Cc: KarimAllah Ahmed <karahmed@amazon.de>
Cc: andrew.cooper3@citrix.com
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lkml.kernel.org/r/20180601145921.9500-3-konrad.wilk@oracle.com
[bwh: Backported to 4.4:
- Update feature test in guest_cpuid_has_spec_ctrl() instead of
svm_{get,set}_msr()
- Adjust context, indentation]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit 24809860012e0130fbafe536709e08a22b3e959e upstream.
The AMD document outlining the SSBD handling
124441_AMD64_SpeculativeStoreBypassDisable_Whitepaper_final.pdf
mentions that the CPUID 8000_0008.EBX[26] will mean that the
speculative store bypass disable is no longer needed.
A copy of this document is available at:
https://bugzilla.kernel.org/show_bug.cgi?id=199889
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Cc: kvm@vger.kernel.org
Cc: andrew.cooper3@citrix.com
Cc: Andy Lutomirski <luto@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lkml.kernel.org/r/20180601145921.9500-2-konrad.wilk@oracle.com
[bwh: Backported to 4.4: adjust context, indentation]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
