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Merge 4.19.129 into android-4.19-stable
Changes in 4.19.129
ipv6: fix IPV6_ADDRFORM operation logic
net_failover: fixed rollback in net_failover_open()
bridge: Avoid infinite loop when suppressing NS messages with invalid options
vxlan: Avoid infinite loop when suppressing NS messages with invalid options
tun: correct header offsets in napi frags mode
selftests: bpf: fix use of undeclared RET_IF macro
make 'user_access_begin()' do 'access_ok()'
Fix 'acccess_ok()' on alpha and SH
arch/openrisc: Fix issues with access_ok()
x86: uaccess: Inhibit speculation past access_ok() in user_access_begin()
lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user()
btrfs: merge btrfs_find_device and find_device
btrfs: Detect unbalanced tree with empty leaf before crashing btree operations
crypto: talitos - fix ECB and CBC algs ivsize
Input: mms114 - fix handling of mms345l
ARM: 8977/1: ptrace: Fix mask for thumb breakpoint hook
sched/fair: Don't NUMA balance for kthreads
Input: synaptics - add a second working PNP_ID for Lenovo T470s
drivers/net/ibmvnic: Update VNIC protocol version reporting
powerpc/xive: Clear the page tables for the ESB IO mapping
ath9k_htc: Silence undersized packet warnings
RDMA/uverbs: Make the event_queue fds return POLLERR when disassociated
x86/cpu/amd: Make erratum #1054 a legacy erratum
perf probe: Accept the instance number of kretprobe event
mm: add kvfree_sensitive() for freeing sensitive data objects
aio: fix async fsync creds
btrfs: tree-checker: Check level for leaves and nodes
x86_64: Fix jiffies ODR violation
x86/PCI: Mark Intel C620 MROMs as having non-compliant BARs
x86/speculation: Prevent rogue cross-process SSBD shutdown
x86/reboot/quirks: Add MacBook6,1 reboot quirk
efi/efivars: Add missing kobject_put() in sysfs entry creation error path
ALSA: es1688: Add the missed snd_card_free()
ALSA: hda/realtek - add a pintbl quirk for several Lenovo machines
ALSA: usb-audio: Fix inconsistent card PM state after resume
ALSA: usb-audio: Add vendor, product and profile name for HP Thunderbolt Dock
ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()
ACPI: GED: add support for _Exx / _Lxx handler methods
ACPI: PM: Avoid using power resources if there are none for D0
cgroup, blkcg: Prepare some symbols for module and !CONFIG_CGROUP usages
nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
spi: dw: Fix controller unregister order
spi: bcm2835aux: Fix controller unregister order
spi: bcm-qspi: when tx/rx buffer is NULL set to 0
PM: runtime: clk: Fix clk_pm_runtime_get() error path
crypto: cavium/nitrox - Fix 'nitrox_get_first_device()' when ndevlist is fully iterated
ALSA: pcm: disallow linking stream to itself
x86/{mce,mm}: Unmap the entire page if the whole page is affected and poisoned
KVM: x86: Fix APIC page invalidation race
kvm: x86: Fix L1TF mitigation for shadow MMU
KVM: x86/mmu: Consolidate "is MMIO SPTE" code
KVM: x86: only do L1TF workaround on affected processors
x86/speculation: Change misspelled STIPB to STIBP
x86/speculation: Add support for STIBP always-on preferred mode
x86/speculation: Avoid force-disabling IBPB based on STIBP and enhanced IBRS.
x86/speculation: PR_SPEC_FORCE_DISABLE enforcement for indirect branches.
spi: No need to assign dummy value in spi_unregister_controller()
spi: Fix controller unregister order
spi: pxa2xx: Fix controller unregister order
spi: bcm2835: Fix controller unregister order
spi: pxa2xx: Balance runtime PM enable/disable on error
spi: pxa2xx: Fix runtime PM ref imbalance on probe error
crypto: virtio: Fix use-after-free in virtio_crypto_skcipher_finalize_req()
crypto: virtio: Fix src/dst scatterlist calculation in __virtio_crypto_skcipher_do_req()
crypto: virtio: Fix dest length calculation in __virtio_crypto_skcipher_do_req()
selftests/net: in rxtimestamp getopt_long needs terminating null entry
ovl: initialize error in ovl_copy_xattr
proc: Use new_inode not new_inode_pseudo
video: fbdev: w100fb: Fix a potential double free.
KVM: nSVM: fix condition for filtering async PF
KVM: nSVM: leave ASID aside in copy_vmcb_control_area
KVM: nVMX: Consult only the "basic" exit reason when routing nested exit
KVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data)
KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits
KVM: arm64: Make vcpu_cp1x() work on Big Endian hosts
scsi: megaraid_sas: TM command refire leads to controller firmware crash
ath9k: Fix use-after-free Read in ath9k_wmi_ctrl_rx
ath9k: Fix use-after-free Write in ath9k_htc_rx_msg
ath9x: Fix stack-out-of-bounds Write in ath9k_hif_usb_rx_cb
ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb
Smack: slab-out-of-bounds in vsscanf
drm/vkms: Hold gem object while still in-use
mm/slub: fix a memory leak in sysfs_slab_add()
fat: don't allow to mount if the FAT length == 0
perf: Add cond_resched() to task_function_call()
agp/intel: Reinforce the barrier after GTT updates
mmc: sdhci-msm: Clear tuning done flag while hs400 tuning
ARM: dts: at91: sama5d2_ptc_ek: fix sdmmc0 node description
mmc: sdio: Fix potential NULL pointer error in mmc_sdio_init_card()
xen/pvcalls-back: test for errors when calling backend_connect()
KVM: arm64: Synchronize sysreg state on injecting an AArch32 exception
ACPI: GED: use correct trigger type field in _Exx / _Lxx handling
drm: bridge: adv7511: Extend list of audio sample rates
crypto: ccp -- don't "select" CONFIG_DMADEVICES
media: si2157: Better check for running tuner in init
objtool: Ignore empty alternatives
spi: pxa2xx: Apply CS clk quirk to BXT
net: atlantic: make hw_get_regs optional
net: ena: fix error returning in ena_com_get_hash_function()
efi/libstub/x86: Work around LLVM ELF quirk build regression
arm64: cacheflush: Fix KGDB trap detection
spi: dw: Zero DMA Tx and Rx configurations on stack
arm64: insn: Fix two bugs in encoding 32-bit logical immediates
ixgbe: Fix XDP redirect on archs with PAGE_SIZE above 4K
MIPS: Loongson: Build ATI Radeon GPU driver as module
Bluetooth: Add SCO fallback for invalid LMP parameters error
kgdb: Disable WARN_CONSOLE_UNLOCKED for all kgdb
kgdb: Prevent infinite recursive entries to the debugger
spi: dw: Enable interrupts in accordance with DMA xfer mode
clocksource: dw_apb_timer: Make CPU-affiliation being optional
clocksource: dw_apb_timer_of: Fix missing clockevent timers
btrfs: do not ignore error from btrfs_next_leaf() when inserting checksums
ARM: 8978/1: mm: make act_mm() respect THREAD_SIZE
batman-adv: Revert "disable ethtool link speed detection when auto negotiation off"
mmc: meson-mx-sdio: trigger a soft reset after a timeout or CRC error
spi: dw: Fix Rx-only DMA transfers
x86/kvm/hyper-v: Explicitly align hcall param for kvm_hyperv_exit
net: vmxnet3: fix possible buffer overflow caused by bad DMA value in vmxnet3_get_rss()
staging: android: ion: use vmap instead of vm_map_ram
brcmfmac: fix wrong location to get firmware feature
tools api fs: Make xxx__mountpoint() more scalable
e1000: Distribute switch variables for initialization
dt-bindings: display: mediatek: control dpi pins mode to avoid leakage
audit: fix a net reference leak in audit_send_reply()
media: dvb: return -EREMOTEIO on i2c transfer failure.
media: platform: fcp: Set appropriate DMA parameters
MIPS: Make sparse_init() using top-down allocation
Bluetooth: btbcm: Add 2 missing models to subver tables
audit: fix a net reference leak in audit_list_rules_send()
netfilter: nft_nat: return EOPNOTSUPP if type or flags are not supported
selftests/bpf: Fix memory leak in extract_build_id()
net: bcmgenet: set Rx mode before starting netif
lib/mpi: Fix 64-bit MIPS build with Clang
exit: Move preemption fixup up, move blocking operations down
sched/core: Fix illegal RCU from offline CPUs
drivers/perf: hisi: Fix typo in events attribute array
net: lpc-enet: fix error return code in lpc_mii_init()
media: cec: silence shift wrapping warning in __cec_s_log_addrs()
net: allwinner: Fix use correct return type for ndo_start_xmit()
powerpc/spufs: fix copy_to_user while atomic
xfs: clean up the error handling in xfs_swap_extents
Crypto/chcr: fix for ccm(aes) failed test
MIPS: Truncate link address into 32bit for 32bit kernel
mips: cm: Fix an invalid error code of INTVN_*_ERR
kgdb: Fix spurious true from in_dbg_master()
xfs: reset buffer write failure state on successful completion
xfs: fix duplicate verification from xfs_qm_dqflush()
platform/x86: intel-vbtn: Use acpi_evaluate_integer()
platform/x86: intel-vbtn: Split keymap into buttons and switches parts
platform/x86: intel-vbtn: Do not advertise switches to userspace if they are not there
platform/x86: intel-vbtn: Also handle tablet-mode switch on "Detachable" and "Portable" chassis-types
nvme: refine the Qemu Identify CNS quirk
ath10k: Remove msdu from idr when management pkt send fails
wcn36xx: Fix error handling path in 'wcn36xx_probe()'
net: qed*: Reduce RX and TX default ring count when running inside kdump kernel
mt76: avoid rx reorder buffer overflow
md: don't flush workqueue unconditionally in md_open
veth: Adjust hard_start offset on redirect XDP frames
net/mlx5e: IPoIB, Drop multicast packets that this interface sent
rtlwifi: Fix a double free in _rtl_usb_tx_urb_setup()
mwifiex: Fix memory corruption in dump_station
x86/boot: Correct relocation destination on old linkers
mips: MAAR: Use more precise address mask
mips: Add udelay lpj numbers adjustment
crypto: stm32/crc32 - fix ext4 chksum BUG_ON()
crypto: stm32/crc32 - fix run-time self test issue.
crypto: stm32/crc32 - fix multi-instance
x86/mm: Stop printing BRK addresses
m68k: mac: Don't call via_flush_cache() on Mac IIfx
btrfs: qgroup: mark qgroup inconsistent if we're inherting snapshot to a new qgroup
macvlan: Skip loopback packets in RX handler
PCI: Don't disable decoding when mmio_always_on is set
MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe()
bcache: fix refcount underflow in bcache_device_free()
mmc: sdhci-msm: Set SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 quirk
staging: greybus: sdio: Respect the cmd->busy_timeout from the mmc core
mmc: via-sdmmc: Respect the cmd->busy_timeout from the mmc core
ixgbe: fix signed-integer-overflow warning
mmc: sdhci-esdhc-imx: fix the mask for tuning start point
spi: dw: Return any value retrieved from the dma_transfer callback
cpuidle: Fix three reference count leaks
platform/x86: hp-wmi: Convert simple_strtoul() to kstrtou32()
platform/x86: intel-hid: Add a quirk to support HP Spectre X2 (2015)
platform/x86: intel-vbtn: Only blacklist SW_TABLET_MODE on the 9 / "Laptop" chasis-type
string.h: fix incompatibility between FORTIFY_SOURCE and KASAN
btrfs: include non-missing as a qualifier for the latest_bdev
btrfs: send: emit file capabilities after chown
mm: thp: make the THP mapcount atomic against __split_huge_pmd_locked()
mm: initialize deferred pages with interrupts enabled
ima: Fix ima digest hash table key calculation
ima: Directly assign the ima_default_policy pointer to ima_rules
evm: Fix possible memory leak in evm_calc_hmac_or_hash()
ext4: fix EXT_MAX_EXTENT/INDEX to check for zeroed eh_max
ext4: fix error pointer dereference
ext4: fix race between ext4_sync_parent() and rename()
PCI: Avoid Pericom USB controller OHCI/EHCI PME# defect
PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0
PCI: Avoid FLR for AMD Starship USB 3.0
PCI: Add ACS quirk for iProc PAXB
PCI: Add ACS quirk for Intel Root Complex Integrated Endpoints
PCI: Remove unused NFP32xx IDs
pci:ipmi: Move IPMI PCI class id defines to pci_ids.h
hwmon/k10temp, x86/amd_nb: Consolidate shared device IDs
x86/amd_nb: Add PCI device IDs for family 17h, model 30h
PCI: add USR vendor id and use it in r8169 and w6692 driver
PCI: Move Synopsys HAPS platform device IDs
PCI: Move Rohm Vendor ID to generic list
misc: pci_endpoint_test: Add the layerscape EP device support
misc: pci_endpoint_test: Add support to test PCI EP in AM654x
PCI: Add Synopsys endpoint EDDA Device ID
PCI: Add NVIDIA GPU multi-function power dependencies
PCI: Enable NVIDIA HDA controllers
PCI: mediatek: Add controller support for MT7629
x86/amd_nb: Add PCI device IDs for family 17h, model 70h
ALSA: lx6464es - add support for LX6464ESe pci express variant
PCI: Add Genesys Logic, Inc. Vendor ID
PCI: Add Amazon's Annapurna Labs vendor ID
PCI: vmd: Add device id for VMD device 8086:9A0B
x86/amd_nb: Add Family 19h PCI IDs
PCI: Add Loongson vendor ID
serial: 8250_pci: Move Pericom IDs to pci_ids.h
PCI: Make ACS quirk implementations more uniform
PCI: Unify ACS quirk desired vs provided checking
PCI: Generalize multi-function power dependency device links
btrfs: fix error handling when submitting direct I/O bio
btrfs: fix wrong file range cleanup after an error filling dealloc range
ima: Call ima_calc_boot_aggregate() in ima_eventdigest_init()
PCI: Program MPS for RCiEP devices
e1000e: Disable TSO for buffer overrun workaround
e1000e: Relax condition to trigger reset for ME workaround
carl9170: remove P2P_GO support
media: go7007: fix a miss of snd_card_free
Bluetooth: hci_bcm: fix freeing not-requested IRQ
b43legacy: Fix case where channel status is corrupted
b43: Fix connection problem with WPA3
b43_legacy: Fix connection problem with WPA3
media: ov5640: fix use of destroyed mutex
igb: Report speed and duplex as unknown when device is runtime suspended
power: vexpress: add suppress_bind_attrs to true
pinctrl: samsung: Correct setting of eint wakeup mask on s5pv210
pinctrl: samsung: Save/restore eint_mask over suspend for EINT_TYPE GPIOs
gnss: sirf: fix error return code in sirf_probe()
sparc32: fix register window handling in genregs32_[gs]et()
sparc64: fix misuses of access_process_vm() in genregs32_[sg]et()
dm crypt: avoid truncating the logical block size
alpha: fix memory barriers so that they conform to the specification
kernel/cpu_pm: Fix uninitted local in cpu_pm
ARM: tegra: Correct PL310 Auxiliary Control Register initialization
ARM: dts: exynos: Fix GPIO polarity for thr GalaxyS3 CM36651 sensor's bus
ARM: dts: at91: sama5d2_ptc_ek: fix vbus pin
ARM: dts: s5pv210: Set keep-power-in-suspend for SDHCI1 on Aries
drivers/macintosh: Fix memleak in windfarm_pm112 driver
powerpc/64s: Don't let DT CPU features set FSCR_DSCR
powerpc/64s: Save FSCR to init_task.thread.fscr after feature init
kbuild: force to build vmlinux if CONFIG_MODVERSION=y
sunrpc: svcauth_gss_register_pseudoflavor must reject duplicate registrations.
sunrpc: clean up properly in gss_mech_unregister()
mtd: rawnand: brcmnand: fix hamming oob layout
mtd: rawnand: pasemi: Fix the probe error path
w1: omap-hdq: cleanup to add missing newline for some dev_dbg
perf probe: Do not show the skipped events
perf probe: Fix to check blacklist address correctly
perf probe: Check address correctness by map instead of _etext
perf symbols: Fix debuginfo search for Ubuntu
Linux 4.19.129
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I7b1108d90ee1109a28fe488a4358b7a3e101d9c9
[ Upstream commit bf2c59fce4074e55d622089b34be3a6bc95484fb ]
In the CPU-offline process, it calls mmdrop() after idle entry and the
subsequent call to cpuhp_report_idle_dead(). Once execution passes the
call to rcu_report_dead(), RCU is ignoring the CPU, which results in
lockdep complaining when mmdrop() uses RCU from either memcg or
debugobjects below.
Fix it by cleaning up the active_mm state from BP instead. Every arch
which has CONFIG_HOTPLUG_CPU should have already called idle_task_exit()
from AP. The only exception is parisc because it switches them to
&init_mm unconditionally (see smp_boot_one_cpu() and smp_cpu_init()),
but the patch will still work there because it calls mmgrab(&init_mm) in
smp_cpu_init() and then should call mmdrop(&init_mm) in finish_cpu().
WARNING: suspicious RCU usage
-----------------------------
kernel/workqueue.c:710 RCU or wq_pool_mutex should be held!
other info that might help us debug this:
RCU used illegally from offline CPU!
Call Trace:
dump_stack+0xf4/0x164 (unreliable)
lockdep_rcu_suspicious+0x140/0x164
get_work_pool+0x110/0x150
__queue_work+0x1bc/0xca0
queue_work_on+0x114/0x120
css_release+0x9c/0xc0
percpu_ref_put_many+0x204/0x230
free_pcp_prepare+0x264/0x570
free_unref_page+0x38/0xf0
__mmdrop+0x21c/0x2c0
idle_task_exit+0x170/0x1b0
pnv_smp_cpu_kill_self+0x38/0x2e0
cpu_die+0x48/0x64
arch_cpu_idle_dead+0x30/0x50
do_idle+0x2f4/0x470
cpu_startup_entry+0x38/0x40
start_secondary+0x7a8/0xa80
start_secondary_resume+0x10/0x14
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Link: https://lkml.kernel.org/r/20200401214033.8448-1-cai@lca.pw
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Merge 4.19.116 into android-4.19
Changes in 4.19.116
ARM: dts: sun8i-a83t-tbs-a711: HM5065 doesn't like such a high voltage
bus: sunxi-rsb: Return correct data when mixing 16-bit and 8-bit reads
net: vxge: fix wrong __VA_ARGS__ usage
hinic: fix a bug of waitting for IO stopped
hinic: fix wrong para of wait_for_completion_timeout
cxgb4/ptp: pass the sign of offset delta in FW CMD
qlcnic: Fix bad kzalloc null test
i2c: st: fix missing struct parameter description
cpufreq: imx6q: Fixes unwanted cpu overclocking on i.MX6ULL
media: venus: hfi_parser: Ignore HEVC encoding for V1
firmware: arm_sdei: fix double-lock on hibernate with shared events
null_blk: Fix the null_add_dev() error path
null_blk: Handle null_add_dev() failures properly
null_blk: fix spurious IO errors after failed past-wp access
xhci: bail out early if driver can't accress host in resume
x86: Don't let pgprot_modify() change the page encryption bit
block: keep bdi->io_pages in sync with max_sectors_kb for stacked devices
irqchip/versatile-fpga: Handle chained IRQs properly
sched: Avoid scale real weight down to zero
selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault
PCI/switchtec: Fix init_completion race condition with poll_wait()
media: i2c: video-i2c: fix build errors due to 'imply hwmon'
libata: Remove extra scsi_host_put() in ata_scsi_add_hosts()
pstore/platform: fix potential mem leak if pstore_init_fs failed
gfs2: Don't demote a glock until its revokes are written
x86/boot: Use unsigned comparison for addresses
efi/x86: Ignore the memory attributes table on i386
genirq/irqdomain: Check pointer in irq_domain_alloc_irqs_hierarchy()
block: Fix use-after-free issue accessing struct io_cq
media: i2c: ov5695: Fix power on and off sequences
usb: dwc3: core: add support for disabling SS instances in park mode
irqchip/gic-v4: Provide irq_retrigger to avoid circular locking dependency
md: check arrays is suspended in mddev_detach before call quiesce operations
firmware: fix a double abort case with fw_load_sysfs_fallback
locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps()
block, bfq: fix use-after-free in bfq_idle_slice_timer_body
btrfs: qgroup: ensure qgroup_rescan_running is only set when the worker is at least queued
btrfs: remove a BUG_ON() from merge_reloc_roots()
btrfs: track reloc roots based on their commit root bytenr
IB/mlx5: Replace tunnel mpls capability bits for tunnel_offloads
uapi: rename ext2_swab() to swab() and share globally in swab.h
slub: improve bit diffusion for freelist ptr obfuscation
ASoC: fix regwmask
ASoC: dapm: connect virtual mux with default value
ASoC: dpcm: allow start or stop during pause for backend
ASoC: topology: use name_prefix for new kcontrol
usb: gadget: f_fs: Fix use after free issue as part of queue failure
usb: gadget: composite: Inform controller driver of self-powered
ALSA: usb-audio: Add mixer workaround for TRX40 and co
ALSA: hda: Add driver blacklist
ALSA: hda: Fix potential access overflow in beep helper
ALSA: ice1724: Fix invalid access for enumerated ctl items
ALSA: pcm: oss: Fix regression by buffer overflow fix
ALSA: doc: Document PC Beep Hidden Register on Realtek ALC256
ALSA: hda/realtek - Set principled PC Beep configuration for ALC256
ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups
ALSA: hda/realtek - Add quirk for MSI GL63
media: ti-vpe: cal: fix disable_irqs to only the intended target
acpi/x86: ignore unspecified bit positions in the ACPI global lock field
thermal: devfreq_cooling: inline all stubs for CONFIG_DEVFREQ_THERMAL=n
nvme-fc: Revert "add module to ops template to allow module references"
nvme: Treat discovery subsystems as unique subsystems
PCI: pciehp: Fix indefinite wait on sysfs requests
PCI/ASPM: Clear the correct bits when enabling L1 substates
PCI: Add boot interrupt quirk mechanism for Xeon chipsets
PCI: endpoint: Fix for concurrent memory allocation in OB address region
tpm: Don't make log failures fatal
tpm: tpm1_bios_measurements_next should increase position index
tpm: tpm2_bios_measurements_next should increase position index
KEYS: reaching the keys quotas correctly
irqchip/versatile-fpga: Apply clear-mask earlier
pstore: pstore_ftrace_seq_next should increase position index
MIPS/tlbex: Fix LDDIR usage in setup_pw() for Loongson-3
MIPS: OCTEON: irq: Fix potential NULL pointer dereference
ath9k: Handle txpower changes even when TPC is disabled
signal: Extend exec_id to 64bits
x86/entry/32: Add missing ASM_CLAC to general_protection entry
KVM: nVMX: Properly handle userspace interrupt window request
KVM: s390: vsie: Fix region 1 ASCE sanity shadow address checks
KVM: s390: vsie: Fix delivery of addressing exceptions
KVM: x86: Allocate new rmap and large page tracking when moving memslot
KVM: VMX: Always VMCLEAR in-use VMCSes during crash with kexec support
KVM: x86: Gracefully handle __vmalloc() failure during VM allocation
KVM: VMX: fix crash cleanup when KVM wasn't used
CIFS: Fix bug which the return value by asynchronous read is error
mtd: spinand: Stop using spinand->oobbuf for buffering bad block markers
mtd: spinand: Do not erase the block before writing a bad block marker
Btrfs: fix crash during unmount due to race with delayed inode workers
btrfs: set update the uuid generation as soon as possible
btrfs: drop block from cache on error in relocation
btrfs: fix missing file extent item for hole after ranged fsync
btrfs: fix missing semaphore unlock in btrfs_sync_file
crypto: mxs-dcp - fix scatterlist linearization for hash
erofs: correct the remaining shrink objects
powerpc/pseries: Drop pointless static qualifier in vpa_debugfs_init()
x86/speculation: Remove redundant arch_smt_update() invocation
tools: gpio: Fix out-of-tree build regression
mm: Use fixed constant in page_frag_alloc instead of size + 1
net: qualcomm: rmnet: Allow configuration updates to existing devices
arm64: dts: allwinner: h6: Fix PMU compatible
dm writecache: add cond_resched to avoid CPU hangs
dm verity fec: fix memory leak in verity_fec_dtr
scsi: zfcp: fix missing erp_lock in port recovery trigger for point-to-point
arm64: armv8_deprecated: Fix undef_hook mask for thumb setend
selftests: vm: drop dependencies on page flags from mlock2 tests
rtc: omap: Use define directive for PIN_CONFIG_ACTIVE_HIGH
drm/etnaviv: rework perfmon query infrastructure
powerpc/pseries: Avoid NULL pointer dereference when drmem is unavailable
NFS: Fix a page leak in nfs_destroy_unlinked_subrequests()
ext4: fix a data race at inode->i_blocks
fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
ocfs2: no need try to truncate file beyond i_size
perf tools: Support Python 3.8+ in Makefile
s390/diag: fix display of diagnose call statistics
Input: i8042 - add Acer Aspire 5738z to nomux list
clk: ingenic/jz4770: Exit with error if CGU init failed
kmod: make request_module() return an error when autoloading is disabled
cpufreq: powernv: Fix use-after-free
hfsplus: fix crash and filesystem corruption when deleting files
libata: Return correct status in sata_pmp_eh_recover_pm() when ATA_DFLAG_DETACH is set
ipmi: fix hung processes in __get_guid()
xen/blkfront: fix memory allocation flags in blkfront_setup_indirect()
powerpc/powernv/idle: Restore AMR/UAMOR/AMOR after idle
powerpc/64/tm: Don't let userspace set regs->trap via sigreturn
powerpc/hash64/devmap: Use H_PAGE_THP_HUGE when setting up huge devmap PTE entries
powerpc/xive: Use XIVE_BAD_IRQ instead of zero to catch non configured IPIs
powerpc/kprobes: Ignore traps that happened in real mode
scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug
powerpc: Add attributes for setjmp/longjmp
powerpc: Make setjmp/longjmp signature standard
btrfs: use nofs allocations for running delayed items
dm zoned: remove duplicate nr_rnd_zones increase in dmz_init_zone()
crypto: caam - update xts sector size for large input length
crypto: ccree - improve error handling
crypto: ccree - zero out internal struct before use
crypto: ccree - don't mangle the request assoclen
crypto: ccree - dec auth tag size from cryptlen map
crypto: ccree - only try to map auth tag if needed
Revert "drm/dp_mst: Remove VCPI while disabling topology mgr"
drm/dp_mst: Fix clearing payload state on topology disable
drm: Remove PageReserved manipulation from drm_pci_alloc
ftrace/kprobe: Show the maxactive number on kprobe_events
powerpc/fsl_booke: Avoid creating duplicate tlb1 entry
misc: echo: Remove unnecessary parentheses and simplify check for zero
etnaviv: perfmon: fix total and idle HI cyleces readout
mfd: dln2: Fix sanity checking for endpoints
efi/x86: Fix the deletion of variables in mixed mode
Linux 4.19.116
Change-Id: If09fbb53fcb11ea01eaaa7fee7ed21ed6234f352
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit 34d66caf251df91ff27b24a3a786810d29989eca upstream.
With commit a74cfffb03b7 ("x86/speculation: Rework SMT state change"),
arch_smt_update() is invoked from each individual CPU hotplug function.
Therefore the extra arch_smt_update() call in the sysfs SMT control is
redundant.
Fixes: a74cfffb03b7 ("x86/speculation: Rework SMT state change")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <konrad.wilk@oracle.com>
Cc: <dwmw@amazon.co.uk>
Cc: <bp@suse.de>
Cc: <srinivas.eeda@oracle.com>
Cc: <peterz@infradead.org>
Cc: <hpa@zytor.com>
Link: https://lkml.kernel.org/r/e2e064f2-e8ef-42ca-bf4f-76b612964752@default
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some vendor modules might want to keep track of isolated CPUs. Add a
stub symbol that never isolates any CPU.
Bug: 149816871
Signed-off-by: Saravana Kannan <saravanak@google.com>
Change-Id: Ia494314168e94d72b0c1e8b786c150b9403dbf1a
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Merge 4.19.106 into android-4.19
Changes in 4.19.106
core: Don't skip generic XDP program execution for cloned SKBs
enic: prevent waking up stopped tx queues over watchdog reset
net/smc: fix leak of kernel memory to user space
net: dsa: tag_qca: Make sure there is headroom for tag
net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS
net/sched: flower: add missing validation of TCA_FLOWER_FLAGS
Revert "KVM: nVMX: Use correct root level for nested EPT shadow page tables"
Revert "KVM: VMX: Add non-canonical check on writes to RTIT address MSRs"
KVM: nVMX: Use correct root level for nested EPT shadow page tables
drm/gma500: Fixup fbdev stolen size usage evaluation
cpu/hotplug, stop_machine: Fix stop_machine vs hotplug order
brcmfmac: Fix use after free in brcmf_sdio_readframes()
leds: pca963x: Fix open-drain initialization
ext4: fix ext4_dax_read/write inode locking sequence for IOCB_NOWAIT
ALSA: ctl: allow TLV read operation for callback type of element in locked case
gianfar: Fix TX timestamping with a stacked DSA driver
pinctrl: sh-pfc: sh7264: Fix CAN function GPIOs
pxa168fb: Fix the function used to release some memory in an error handling path
media: i2c: mt9v032: fix enum mbus codes and frame sizes
powerpc/powernv/iov: Ensure the pdn for VFs always contains a valid PE number
gpio: gpio-grgpio: fix possible sleep-in-atomic-context bugs in grgpio_irq_map/unmap()
iommu/vt-d: Fix off-by-one in PASID allocation
char/random: silence a lockdep splat with printk()
media: sti: bdisp: fix a possible sleep-in-atomic-context bug in bdisp_device_run()
pinctrl: baytrail: Do not clear IRQ flags on direct-irq enabled pins
efi/x86: Map the entire EFI vendor string before copying it
MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init()
sparc: Add .exit.data section.
uio: fix a sleep-in-atomic-context bug in uio_dmem_genirq_irqcontrol()
usb: gadget: udc: fix possible sleep-in-atomic-context bugs in gr_probe()
usb: dwc2: Fix IN FIFO allocation
clocksource/drivers/bcm2835_timer: Fix memory leak of timer
kselftest: Minimise dependency of get_size on C library interfaces
jbd2: clear JBD2_ABORT flag before journal_reset to update log tail info when load journal
x86/sysfb: Fix check for bad VRAM size
pwm: omap-dmtimer: Simplify error handling
s390/pci: Fix possible deadlock in recover_store()
powerpc/iov: Move VF pdev fixup into pcibios_fixup_iov()
tracing: Fix tracing_stat return values in error handling paths
tracing: Fix very unlikely race of registering two stat tracers
ARM: 8952/1: Disable kmemleak on XIP kernels
ext4, jbd2: ensure panic when aborting with zero errno
ath10k: Correct the DMA direction for management tx buffers
drm/amd/display: Retrain dongles when SINK_COUNT becomes non-zero
nbd: add a flush_workqueue in nbd_start_device
KVM: s390: ENOTSUPP -> EOPNOTSUPP fixups
kconfig: fix broken dependency in randconfig-generated .config
clk: qcom: rcg2: Don't crash if our parent can't be found; return an error
drm/amdgpu: remove 4 set but not used variable in amdgpu_atombios_get_connector_info_from_object_table
drm/amdgpu: Ensure ret is always initialized when using SOC15_WAIT_ON_RREG
regulator: rk808: Lower log level on optional GPIOs being not available
net/wan/fsl_ucc_hdlc: reject muram offsets above 64K
NFC: port100: Convert cpu_to_le16(le16_to_cpu(E1) + E2) to use le16_add_cpu().
selinux: fall back to ref-walk if audit is required
arm64: dts: allwinner: H6: Add PMU mode
arm: dts: allwinner: H3: Add PMU node
selinux: ensure we cleanup the internal AVC counters on error in avc_insert()
arm64: dts: qcom: msm8996: Disable USB2 PHY suspend by core
ARM: dts: imx6: rdu2: Disable WP for USDHC2 and USDHC3
ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed
PCI: iproc: Apply quirk_paxc_bridge() for module as well as built-in
media: cx23885: Add support for AVerMedia CE310B
PCI: Add generic quirk for increasing D3hot delay
PCI: Increase D3 delay for AMD Ryzen5/7 XHCI controllers
media: v4l2-device.h: Explicitly compare grp{id,mask} to zero in v4l2_device macros
reiserfs: Fix spurious unlock in reiserfs_fill_super() error handling
r8169: check that Realtek PHY driver module is loaded
fore200e: Fix incorrect checks of NULL pointer dereference
netfilter: nft_tunnel: add the missing ERSPAN_VERSION nla_policy
ALSA: usx2y: Adjust indentation in snd_usX2Y_hwdep_dsp_status
b43legacy: Fix -Wcast-function-type
ipw2x00: Fix -Wcast-function-type
iwlegacy: Fix -Wcast-function-type
rtlwifi: rtl_pci: Fix -Wcast-function-type
orinoco: avoid assertion in case of NULL pointer
ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1
scsi: ufs: Complete pending requests in host reset and restore path
scsi: aic7xxx: Adjust indentation in ahc_find_syncrate
drm/mediatek: handle events when enabling/disabling crtc
ARM: dts: r8a7779: Add device node for ARM global timer
selinux: ensure we cleanup the internal AVC counters on error in avc_update()
dmaengine: Store module owner in dma_device struct
dmaengine: imx-sdma: Fix memory leak
crypto: chtls - Fixed memory leak
x86/vdso: Provide missing include file
PM / devfreq: rk3399_dmc: Add COMPILE_TEST and HAVE_ARM_SMCCC dependency
pinctrl: sh-pfc: sh7269: Fix CAN function GPIOs
reset: uniphier: Add SCSSI reset control for each channel
RDMA/rxe: Fix error type of mmap_offset
clk: sunxi-ng: add mux and pll notifiers for A64 CPU clock
ALSA: sh: Fix unused variable warnings
clk: uniphier: Add SCSSI clock gate for each channel
ALSA: sh: Fix compile warning wrt const
tools lib api fs: Fix gcc9 stringop-truncation compilation error
ACPI: button: Add DMI quirk for Razer Blade Stealth 13 late 2019 lid switch
mlx5: work around high stack usage with gcc
drm: remove the newline for CRC source name.
ARM: dts: stm32: Add power-supply for DSI panel on stm32f469-disco
usbip: Fix unsafe unaligned pointer usage
udf: Fix free space reporting for metadata and virtual partitions
staging: rtl8188: avoid excessive stack usage
IB/hfi1: Add software counter for ctxt0 seq drop
soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
efi/x86: Don't panic or BUG() on non-critical error conditions
rcu: Use WRITE_ONCE() for assignments to ->pprev for hlist_nulls
Input: edt-ft5x06 - work around first register access error
x86/nmi: Remove irq_work from the long duration NMI handler
wan: ixp4xx_hss: fix compile-testing on 64-bit
ASoC: atmel: fix build error with CONFIG_SND_ATMEL_SOC_DMA=m
tty: synclinkmp: Adjust indentation in several functions
tty: synclink_gt: Adjust indentation in several functions
visorbus: fix uninitialized variable access
driver core: platform: Prevent resouce overflow from causing infinite loops
driver core: Print device when resources present in really_probe()
bpf: Return -EBADRQC for invalid map type in __bpf_tx_xdp_map
vme: bridges: reduce stack usage
drm/nouveau/secboot/gm20b: initialize pointer in gm20b_secboot_new()
drm/nouveau/gr/gk20a,gm200-: add terminators to method lists read from fw
drm/nouveau: Fix copy-paste error in nouveau_fence_wait_uevent_handler
drm/nouveau/drm/ttm: Remove set but not used variable 'mem'
drm/nouveau/fault/gv100-: fix memory leak on module unload
drm/vmwgfx: prevent memory leak in vmw_cmdbuf_res_add
usb: musb: omap2430: Get rid of musb .set_vbus for omap2430 glue
iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE
f2fs: set I_LINKABLE early to avoid wrong access by vfs
f2fs: free sysfs kobject
scsi: iscsi: Don't destroy session if there are outstanding connections
arm64: fix alternatives with LLVM's integrated assembler
drm/amd/display: fixup DML dependencies
watchdog/softlockup: Enforce that timestamp is valid on boot
f2fs: fix memleak of kobject
x86/mm: Fix NX bit clearing issue in kernel_map_pages_in_pgd
pwm: omap-dmtimer: Remove PWM chip in .remove before making it unfunctional
cmd64x: potential buffer overflow in cmd64x_program_timings()
ide: serverworks: potential overflow in svwks_set_pio_mode()
pwm: Remove set but not set variable 'pwm'
btrfs: fix possible NULL-pointer dereference in integrity checks
btrfs: safely advance counter when looking up bio csums
btrfs: device stats, log when stats are zeroed
module: avoid setting info->name early in case we can fall back to info->mod->name
remoteproc: Initialize rproc_class before use
irqchip/mbigen: Set driver .suppress_bind_attrs to avoid remove problems
ALSA: hda/hdmi - add retry logic to parse_intel_hdmi()
kbuild: use -S instead of -E for precise cc-option test in Kconfig
x86/decoder: Add TEST opcode to Group3-2
s390: adjust -mpacked-stack support check for clang 10
s390/ftrace: generate traced function stack frame
driver core: platform: fix u32 greater or equal to zero comparison
ALSA: hda - Add docking station support for Lenovo Thinkpad T420s
drm/nouveau/mmu: fix comptag memory leak
powerpc/sriov: Remove VF eeh_dev state when disabling SR-IOV
bcache: cached_dev_free needs to put the sb page
iommu/vt-d: Remove unnecessary WARN_ON_ONCE()
selftests: bpf: Reset global state between reuseport test runs
jbd2: switch to use jbd2_journal_abort() when failed to submit the commit record
jbd2: make sure ESHUTDOWN to be recorded in the journal superblock
ARM: 8951/1: Fix Kexec compilation issue.
hostap: Adjust indentation in prism2_hostapd_add_sta
iwlegacy: ensure loop counter addr does not wrap and cause an infinite loop
cifs: fix NULL dereference in match_prepath
bpf: map_seq_next should always increase position index
ceph: check availability of mds cluster on mount after wait timeout
rbd: work around -Wuninitialized warning
irqchip/gic-v3: Only provision redistributors that are enabled in ACPI
drm/nouveau/disp/nv50-: prevent oops when no channel method map provided
ftrace: fpid_next() should increase position index
trigger_next should increase position index
radeon: insert 10ms sleep in dce5_crtc_load_lut
ocfs2: fix a NULL pointer dereference when call ocfs2_update_inode_fsync_trans()
lib/scatterlist.c: adjust indentation in __sg_alloc_table
reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
bcache: explicity type cast in bset_bkey_last()
irqchip/gic-v3-its: Reference to its_invall_cmd descriptor when building INVALL
iwlwifi: mvm: Fix thermal zone registration
microblaze: Prevent the overflow of the start
brd: check and limit max_part par
drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_latency
drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_voltage
NFS: Fix memory leaks
help_next should increase position index
cifs: log warning message (once) if out of disk space
virtio_balloon: prevent pfn array overflow
mlxsw: spectrum_dpipe: Add missing error path
drm/amdgpu/display: handle multiple numbers of fclks in dcn_calcs.c (v2)
Linux 4.19.106
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ia1032b50dd82b42e13973120dcbf94ae7b864648
[ Upstream commit 45178ac0cea853fe0e405bf11e101bdebea57b15 ]
Paul reported a very sporadic, rcutorture induced, workqueue failure.
When the planets align, the workqueue rescuer's self-migrate fails and
then triggers a WARN for running a work on the wrong CPU.
Tejun then figured that set_cpus_allowed_ptr()'s stop_one_cpu() call
could be ignored! When stopper->enabled is false, stop_machine will
insta complete the work, without actually doing the work. Worse, it
will not WARN about this (we really should fix this).
It turns out there is a small window where a freshly online'ed CPU is
marked 'online' but doesn't yet have the stopper task running:
BP AP
bringup_cpu()
__cpu_up(cpu, idle) --> start_secondary()
...
cpu_startup_entry()
bringup_wait_for_ap()
wait_for_ap_thread() <-- cpuhp_online_idle()
while (1)
do_idle()
... available to run kthreads ...
stop_machine_unpark()
stopper->enable = true;
Close this by moving the stop_machine_unpark() into
cpuhp_online_idle(), such that the stopper thread is ready before we
start the idle loop and schedule.
Reported-by: "Paul E. McKenney" <paulmck@kernel.org>
Debugged-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: "Paul E. McKenney" <paulmck@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Merge 4.19.86 into android-4.19
Changes in 4.19.86
spi: mediatek: use correct mata->xfer_len when in fifo transfer
i2c: mediatek: modify threshold passed to i2c_get_dma_safe_msg_buf()
tee: optee: add missing of_node_put after of_device_is_available
Revert "OPP: Protect dev_list with opp_table lock"
net: cdc_ncm: Signedness bug in cdc_ncm_set_dgram_size()
idr: Fix idr_get_next race with idr_remove
mm/memory_hotplug: don't access uninitialized memmaps in shrink_pgdat_span()
mm/memory_hotplug: fix updating the node span
arm64: uaccess: Ensure PAN is re-enabled after unhandled uaccess fault
fbdev: Ditch fb_edid_add_monspecs
bpf, x32: Fix bug for BPF_ALU64 | BPF_NEG
bpf, x32: Fix bug with ALU64 {LSH, RSH, ARSH} BPF_X shift by 0
bpf, x32: Fix bug with ALU64 {LSH, RSH, ARSH} BPF_K shift by 0
bpf, x32: Fix bug for BPF_JMP | {BPF_JSGT, BPF_JSLE, BPF_JSLT, BPF_JSGE}
net: ovs: fix return type of ndo_start_xmit function
net: xen-netback: fix return type of ndo_start_xmit function
ARM: dts: dra7: Enable workaround for errata i870 in PCIe host mode
ARM: dts: omap5: enable OTG role for DWC3 controller
net: hns3: Fix for netdev not up problem when setting mtu
net: hns3: Fix loss of coal configuration while doing reset
f2fs: return correct errno in f2fs_gc
ARM: dts: sun8i: h3-h5: ir register size should be the whole memory block
ARM: dts: sun8i: h3: bpi-m2-plus: Fix address for external RGMII Ethernet PHY
tcp: up initial rmem to 128KB and SYN rwin to around 64KB
SUNRPC: Fix priority queue fairness
ACPI / LPSS: Make acpi_lpss_find_device() also find PCI devices
ACPI / LPSS: Resume BYT/CHT I2C controllers from resume_noirq
f2fs: keep lazytime on remount
IB/hfi1: Error path MAD response size is incorrect
IB/hfi1: Ensure ucast_dlid access doesnt exceed bounds
mt76x2: fix tx power configuration for VHT mcs 9
mt76x2: disable WLAN core before probe
mt76: fix handling ps-poll frames
iommu/io-pgtable-arm: Fix race handling in split_blk_unmap()
iommu/arm-smmu-v3: Fix unexpected CMD_SYNC timeout
kvm: arm/arm64: Fix stage2_flush_memslot for 4 level page table
arm64/numa: Report correct memblock range for the dummy node
ath10k: fix vdev-start timeout on error
rtlwifi: btcoex: Use proper enumerated types for Wi-Fi only interface
ata: ahci_brcm: Allow using driver or DSL SoCs
PM / devfreq: Fix devfreq_add_device() when drivers are built as modules.
PM / devfreq: Fix handling of min/max_freq == 0
PM / devfreq: stopping the governor before device_unregister()
ath9k: fix reporting calculated new FFT upper max
selftests/tls: Fix recv(MSG_PEEK) & splice() test cases
usb: gadget: udc: fotg210-udc: Fix a sleep-in-atomic-context bug in fotg210_get_status()
usb: dwc3: gadget: Check ENBLSLPM before sending ep command
nl80211: Fix a GET_KEY reply attribute
irqchip/irq-mvebu-icu: Fix wrong private data retrieval
watchdog: core: fix null pointer dereference when releasing cdev
watchdog: renesas_wdt: stop when unregistering
watchdog: sama5d4: fix timeout-sec usage
watchdog: w83627hf_wdt: Support NCT6796D, NCT6797D, NCT6798D
KVM: PPC: Inform the userspace about TCE update failures
printk: Do not miss new messages when replaying the log
printk: CON_PRINTBUFFER console registration is a bit racy
dmaengine: ep93xx: Return proper enum in ep93xx_dma_chan_direction
dmaengine: timb_dma: Use proper enum in td_prep_slave_sg
ALSA: hda: Fix mismatch for register mask and value in ext controller.
ext4: fix build error when DX_DEBUG is defined
clk: keystone: Enable TISCI clocks if K3_ARCH
sunrpc: Fix connect metrics
x86/PCI: Apply VMD's AERSID fixup generically
mei: samples: fix a signedness bug in amt_host_if_call()
cxgb4: Use proper enum in cxgb4_dcb_handle_fw_update
cxgb4: Use proper enum in IEEE_FAUX_SYNC
powerpc/pseries: Fix DTL buffer registration
powerpc/pseries: Fix how we iterate over the DTL entries
powerpc/xive: Move a dereference below a NULL test
ARM: dts: at91: sama5d4_xplained: fix addressable nand flash size
ARM: dts: at91: at91sam9x5cm: fix addressable nand flash size
ARM: dts: at91: sama5d2_ptc_ek: fix bootloader env offsets
mtd: rawnand: sh_flctl: Use proper enum for flctl_dma_fifo0_transfer
PM / hibernate: Check the success of generating md5 digest before hibernation
tools: PCI: Fix compilation warnings
clocksource/drivers/sh_cmt: Fixup for 64-bit machines
clocksource/drivers/sh_cmt: Fix clocksource width for 32-bit machines
ice: Fix forward to queue group logic
md: allow metadata updates while suspending an array - fix
ixgbe: Fix ixgbe TX hangs with XDP_TX beyond queue limit
i40e: Use proper enum in i40e_ndo_set_vf_link_state
ixgbe: Fix crash with VFs and flow director on interface flap
IB/mthca: Fix error return code in __mthca_init_one()
IB/rxe: avoid srq memory leak
RDMA/hns: Bugfix for reserved qp number
RDMA/hns: Submit bad wr when post send wr exception
RDMA/hns: Bugfix for CM test
RDMA/hns: Limit the size of extend sge of sq
IB/mlx4: Avoid implicit enumerated type conversion
rpmsg: glink: smem: Support rx peak for size less than 4 bytes
msm/gpu/a6xx: Force of_dma_configure to setup DMA for GMU
OPP: Return error on error from dev_pm_opp_get_opp_count()
ACPICA: Never run _REG on system_memory and system_IO
cpuidle: menu: Fix wakeup statistics updates for polling state
ASoC: qdsp6: q6asm-dai: checking NULL vs IS_ERR()
powerpc/time: Use clockevents_register_device(), fixing an issue with large decrementer
powerpc/64s/radix: Explicitly flush ERAT with local LPID invalidation
ata: ep93xx: Use proper enums for directions
qed: Avoid implicit enum conversion in qed_ooo_submit_tx_buffers
media: rc: ir-rc6-decoder: enable toggle bit for Kathrein RCU-676 remote
media: pxa_camera: Fix check for pdev->dev.of_node
media: rcar-vin: fix redeclaration of symbol
media: i2c: adv748x: Support probing a single output
ALSA: hda/sigmatel - Disable automute for Elo VuPoint
bnxt_en: return proper error when FW returns HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED
KVM: PPC: Book3S PR: Exiting split hack mode needs to fixup both PC and LR
USB: serial: cypress_m8: fix interrupt-out transfer length
usb: dwc2: disable power_down on rockchip devices
mtd: physmap_of: Release resources on error
cpu/SMT: State SMT is disabled even with nosmt and without "=force"
brcmfmac: reduce timeout for action frame scan
brcmfmac: fix full timeout waiting for action frame on-channel tx
qtnfmac: request userspace to do OBSS scanning if FW can not
qtnfmac: pass sgi rate info flag to wireless core
qtnfmac: inform wireless core about supported extended capabilities
qtnfmac: drop error reports for out-of-bounds key indexes
clk: samsung: Use NOIRQ stage for Exynos5433 clocks suspend/resume
clk: samsung: exynos5420: Define CLK_SECKEY gate clock only or Exynos5420
clk: samsung: Use clk_hw API for calling clk framework from clk notifiers
i2c: brcmstb: Allow enabling the driver on DSL SoCs
printk: Correct wrong casting
NFSv4.x: fix lock recovery during delegation recall
dmaengine: ioat: fix prototype of ioat_enumerate_channels
media: ov5640: fix framerate update
media: cec-gpio: select correct Signal Free Time
gfs2: slow the deluge of io error messages
i2c: omap: use core to detect 'no zero length' quirk
i2c: qup: use core to detect 'no zero length' quirk
i2c: tegra: use core to detect 'no zero length' quirk
i2c: zx2967: use core to detect 'no zero length' quirk
Input: st1232 - set INPUT_PROP_DIRECT property
Input: silead - try firmware reload after unsuccessful resume
soc: fsl: bman_portals: defer probe after bman's probe
net: hns3: Fix for rx vlan id handle to support Rev 0x21 hardware
tc-testing: fix build of eBPF programs
remoteproc: Check for NULL firmwares in sysfs interface
remoteproc: qcom: q6v5: Fix a race condition on fatal crash
kexec: Allocate decrypted control pages for kdump if SME is enabled
x86/olpc: Fix build error with CONFIG_MFD_CS5535=m
dmaengine: rcar-dmac: set scatter/gather max segment size
crypto: mxs-dcp - Fix SHA null hashes and output length
crypto: mxs-dcp - Fix AES issues
xfrm: use correct size to initialise sp->ovec
ACPI / SBS: Fix rare oops when removing modules
iwlwifi: mvm: don't send keys when entering D3
xsk: proper AF_XDP socket teardown ordering
x86/fsgsbase/64: Fix ptrace() to read the FS/GS base accurately
mmc: renesas_sdhi_internal_dmac: Whitelist r8a774a1
mmc: tmio: Fix SCC error detection
mmc: renesas_sdhi_internal_dmac: set scatter/gather max segment size
atmel_lcdfb: support native-mode display-timings
fbdev: sbuslib: use checked version of put_user()
fbdev: sbuslib: integer overflow in sbusfb_ioctl_helper()
fbdev: fix broken menu dependencies
reset: Fix potential use-after-free in __of_reset_control_get()
bcache: account size of buckets used in uuid write to ca->meta_sectors_written
bcache: recal cached_dev_sectors on detach
platform/x86: mlx-platform: Properly use mlxplat_mlxcpld_msn201x_items
media: dw9714: Fix error handling in probe function
media: dw9807-vcm: Fix probe error handling
media: cx18: Don't check for address of video_dev
mtd: spi-nor: cadence-quadspi: Use proper enum for dma_[un]map_single
mtd: devices: m25p80: Make sure WRITE_EN is issued before each write
x86/intel_rdt: Introduce utility to obtain CDP peer
x86/intel_rdt: CBM overlap should also check for overlap with CDP peer
mmc: mmci: expand startbiterr to irqmask and error check
s390/kasan: avoid vdso instrumentation
s390/kasan: avoid instrumentation of early C code
s390/kasan: avoid user access code instrumentation
proc/vmcore: Fix i386 build error of missing copy_oldmem_page_encrypted()
backlight: lm3639: Unconditionally call led_classdev_unregister
mfd: ti_am335x_tscadc: Keep ADC interface on if child is wakeup capable
printk: Give error on attempt to set log buffer length to over 2G
media: isif: fix a NULL pointer dereference bug
GFS2: Flush the GFS2 delete workqueue before stopping the kernel threads
media: cx231xx: fix potential sign-extension overflow on large shift
media: venus: vdec: fix decoded data size
ALSA: hda/ca0132 - Fix input effect controls for desktop cards
lightnvm: pblk: fix rqd.error return value in pblk_blk_erase_sync
lightnvm: pblk: fix incorrect min_write_pgs
lightnvm: pblk: guarantee emeta on line close
lightnvm: pblk: fix write amplificiation calculation
lightnvm: pblk: guarantee mw_cunits on read buffer
lightnvm: do no update csecs and sos on 1.2
lightnvm: pblk: fix error handling of pblk_lines_init()
lightnvm: pblk: consider max hw sectors supported for max_write_pgs
x86/kexec: Correct KEXEC_BACKUP_SRC_END off-by-one error
bpf: btf: Fix a missing check bug
net: fix generic XDP to handle if eth header was mangled
gpio: syscon: Fix possible NULL ptr usage
spi: fsl-lpspi: Prevent FIFO under/overrun by default
pinctrl: gemini: Mask and set properly
spi: spidev: Fix OF tree warning logic
ARM: 8802/1: Call syscall_trace_exit even when system call skipped
x86/mm: Do not warn about PCI BIOS W+X mappings
orangefs: rate limit the client not running info message
pinctrl: gemini: Fix up TVC clock group
scsi: arcmsr: clean up clang warning on extraneous parentheses
hwmon: (k10temp) Support all Family 15h Model 6xh and Model 7xh processors
hwmon: (nct6775) Fix names of DIMM temperature sources
hwmon: (pwm-fan) Silence error on probe deferral
hwmon: (ina3221) Fix INA3221_CONFIG_MODE macros
hwmon: (npcm-750-pwm-fan) Change initial pwm target to 255
selftests: forwarding: Have lldpad_app_wait_set() wait for unknown, too
net: sched: avoid writing on noop_qdisc
netfilter: nft_compat: do not dump private area
misc: cxl: Fix possible null pointer dereference
mac80211: minstrel: fix using short preamble CCK rates on HT clients
mac80211: minstrel: fix CCK rate group streams value
mac80211: minstrel: fix sampling/reporting of CCK rates in HT mode
spi: rockchip: initialize dma_slave_config properly
mlxsw: spectrum_switchdev: Check notification relevance based on upper device
ARM: dts: omap5: Fix dual-role mode on Super-Speed port
tcp: start receiver buffer autotuning sooner
ACPI / LPSS: Use acpi_lpss_* instead of acpi_subsys_* functions for hibernate
PM / devfreq: Fix static checker warning in try_then_request_governor
tools: PCI: Fix broken pcitest compilation
powerpc/time: Fix clockevent_decrementer initalisation for PR KVM
mmc: tmio: fix SCC error handling to avoid false positive CRC error
x86/resctrl: Fix rdt_find_domain() return value and checks
Linux 4.19.86
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ib9de820e5026cadf4fab89e69d1324302cdae9c3
[ Upstream commit d0e7d14455d41163126afecd0fcce935463cc512 ]
When booting with "nosmt=force" a message is issued into dmesg to
confirm that SMT has been force-disabled but such a message is not
issued when only "nosmt" is on the kernel command line.
Fix that.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20181004172227.10094-1-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Merge 4.19.84 into android-4.19
Changes in 4.19.84
bonding: fix state transition issue in link monitoring
CDC-NCM: handle incomplete transfer of MTU
ipv4: Fix table id reference in fib_sync_down_addr
net: ethernet: octeon_mgmt: Account for second possible VLAN header
net: fix data-race in neigh_event_send()
net: qualcomm: rmnet: Fix potential UAF when unregistering
net: usb: qmi_wwan: add support for DW5821e with eSIM support
NFC: fdp: fix incorrect free object
nfc: netlink: fix double device reference drop
NFC: st21nfca: fix double free
qede: fix NULL pointer deref in __qede_remove()
net: mscc: ocelot: don't handle netdev events for other netdevs
net: mscc: ocelot: fix NULL pointer on LAG slave removal
ipv6: fixes rt6_probe() and fib6_nh->last_probe init
net: hns: Fix the stray netpoll locks causing deadlock in NAPI path
ALSA: timer: Fix incorrectly assigned timer instance
ALSA: bebob: fix to detect configured source of sampling clock for Focusrite Saffire Pro i/o series
ALSA: hda/ca0132 - Fix possible workqueue stall
mm: memcontrol: fix network errors from failing __GFP_ATOMIC charges
mm, meminit: recalculate pcpu batch and high limits after init completes
mm: thp: handle page cache THP correctly in PageTransCompoundMap
mm, vmstat: hide /proc/pagetypeinfo from normal users
dump_stack: avoid the livelock of the dump_lock
tools: gpio: Use !building_out_of_srctree to determine srctree
perf tools: Fix time sorting
drm/radeon: fix si_enable_smc_cac() failed issue
HID: wacom: generic: Treat serial number and related fields as unsigned
soundwire: depend on ACPI
soundwire: bus: set initial value to port_status
arm64: Do not mask out PTE_RDONLY in pte_same()
ceph: fix use-after-free in __ceph_remove_cap()
ceph: add missing check in d_revalidate snapdir handling
iio: adc: stm32-adc: fix stopping dma
iio: imu: adis16480: make sure provided frequency is positive
iio: srf04: fix wrong limitation in distance measuring
ARM: sunxi: Fix CPU powerdown on A83T
netfilter: nf_tables: Align nft_expr private data to 64-bit
netfilter: ipset: Fix an error code in ip_set_sockfn_get()
intel_th: pci: Add Comet Lake PCH support
intel_th: pci: Add Jasper Lake PCH support
x86/apic/32: Avoid bogus LDR warnings
SMB3: Fix persistent handles reconnect
can: usb_8dev: fix use-after-free on disconnect
can: flexcan: disable completely the ECC mechanism
can: c_can: c_can_poll(): only read status register after status IRQ
can: peak_usb: fix a potential out-of-sync while decoding packets
can: rx-offload: can_rx_offload_queue_sorted(): fix error handling, avoid skb mem leak
can: gs_usb: gs_can_open(): prevent memory leak
can: dev: add missing of_node_put() after calling of_get_child_by_name()
can: mcba_usb: fix use-after-free on disconnect
can: peak_usb: fix slab info leak
configfs: stash the data we need into configfs_buffer at open time
configfs_register_group() shouldn't be (and isn't) called in rmdirable parts
configfs: new object reprsenting tree fragments
configfs: provide exclusion between IO and removals
configfs: fix a deadlock in configfs_symlink()
ALSA: usb-audio: More validations of descriptor units
ALSA: usb-audio: Simplify parse_audio_unit()
ALSA: usb-audio: Unify the release of usb_mixer_elem_info objects
ALSA: usb-audio: Remove superfluous bLength checks
ALSA: usb-audio: Clean up check_input_term()
ALSA: usb-audio: Fix possible NULL dereference at create_yamaha_midi_quirk()
ALSA: usb-audio: remove some dead code
ALSA: usb-audio: Fix copy&paste error in the validator
sched/fair: Fix low cpu usage with high throttling by removing expiration of cpu-local slices
sched/fair: Fix -Wunused-but-set-variable warnings
usbip: Fix vhci_urb_enqueue() URB null transfer buffer error path
usbip: Implement SG support to vhci-hcd and stub driver
PCI: tegra: Enable Relaxed Ordering only for Tegra20 & Tegra30
HID: google: add magnemite/masterball USB ids
dmaengine: xilinx_dma: Fix control reg update in vdma_channel_set_config
dmaengine: sprd: Fix the possible memory leak issue
HID: intel-ish-hid: fix wrong error handling in ishtp_cl_alloc_tx_ring()
RDMA/mlx5: Clear old rate limit when closing QP
iw_cxgb4: fix ECN check on the passive accept
RDMA/qedr: Fix reported firmware version
net/mlx5e: TX, Fix consumer index of error cqe dump
net/mlx5: prevent memory leak in mlx5_fpga_conn_create_cq
scsi: qla2xxx: fixup incorrect usage of host_byte
RDMA/uverbs: Prevent potential underflow
net: openvswitch: free vport unless register_netdevice() succeeds
scsi: lpfc: Honor module parameter lpfc_use_adisc
scsi: qla2xxx: Initialized mailbox to prevent driver load failure
netfilter: nf_flow_table: set timeout before insertion into hashes
ipvs: don't ignore errors in case refcounting ip_vs module fails
ipvs: move old_secure_tcp into struct netns_ipvs
bonding: fix unexpected IFF_BONDING bit unset
macsec: fix refcnt leak in module exit routine
usb: fsl: Check memory resource before releasing it
usb: gadget: udc: atmel: Fix interrupt storm in FIFO mode.
usb: gadget: composite: Fix possible double free memory bug
usb: dwc3: pci: prevent memory leak in dwc3_pci_probe
usb: gadget: configfs: fix concurrent issue between composite APIs
usb: dwc3: remove the call trace of USBx_GFLADJ
perf/x86/amd/ibs: Fix reading of the IBS OpData register and thus precise RIP validity
perf/x86/amd/ibs: Handle erratum #420 only on the affected CPU family (10h)
perf/x86/uncore: Fix event group support
USB: Skip endpoints with 0 maxpacket length
USB: ldusb: use unsigned size format specifiers
usbip: tools: Fix read_usb_vudc_device() error path handling
RDMA/iw_cxgb4: Avoid freeing skb twice in arp failure case
RDMA/hns: Prevent memory leaks of eq->buf_list
scsi: qla2xxx: stop timer in shutdown path
nvme-multipath: fix possible io hang after ctrl reconnect
fjes: Handle workqueue allocation failure
net: hisilicon: Fix "Trying to free already-free IRQ"
net: mscc: ocelot: fix vlan_filtering when enslaving to bridge before link is up
net: mscc: ocelot: refuse to overwrite the port's native vlan
iommu/amd: Apply the same IVRS IOAPIC workaround to Acer Aspire A315-41
drm/amdgpu: If amdgpu_ib_schedule fails return back the error.
drm/amd/display: Passive DP->HDMI dongle detection fix
hv_netvsc: Fix error handling in netvsc_attach()
usb: dwc3: gadget: fix race when disabling ep with cancelled xfers
NFSv4: Don't allow a cached open with a revoked delegation
net: ethernet: arc: add the missed clk_disable_unprepare
igb: Fix constant media auto sense switching when no cable is connected
e1000: fix memory leaks
pinctrl: intel: Avoid potential glitches if pin is in GPIO mode
ocfs2: protect extent tree in ocfs2_prepare_inode_for_write()
pinctrl: cherryview: Fix irq_valid_mask calculation
blkcg: make blkcg_print_stat() print stats only for online blkgs
iio: imu: mpu6050: Add support for the ICM 20602 IMU
iio: imu: inv_mpu6050: fix no data on MPU6050
mm/filemap.c: don't initiate writeback if mapping has no dirty pages
cgroup,writeback: don't switch wbs immediately on dead wbs if the memcg is dead
usbip: Fix free of unallocated memory in vhci tx
netfilter: ipset: Copy the right MAC address in hash:ip,mac IPv6 sets
net: prevent load/store tearing on sk->sk_stamp
iio: imu: mpu6050: Fix FIFO layout for ICM20602
vsock/virtio: fix sock refcnt holding during the shutdown
drm/i915: Rename gen7 cmdparser tables
drm/i915: Disable Secure Batches for gen6+
drm/i915: Remove Master tables from cmdparser
drm/i915: Add support for mandatory cmdparsing
drm/i915: Support ro ppgtt mapped cmdparser shadow buffers
drm/i915: Allow parsing of unsized batches
drm/i915: Add gen9 BCS cmdparsing
drm/i915/cmdparser: Use explicit goto for error paths
drm/i915/cmdparser: Add support for backward jumps
drm/i915/cmdparser: Ignore Length operands during command matching
drm/i915: Lower RM timeout to avoid DSI hard hangs
drm/i915/gen8+: Add RC6 CTX corruption WA
drm/i915/cmdparser: Fix jump whitelist clearing
KVM: x86: use Intel speculation bugs and features as derived in generic x86 code
x86/msr: Add the IA32_TSX_CTRL MSR
x86/cpu: Add a helper function x86_read_arch_cap_msr()
x86/cpu: Add a "tsx=" cmdline option with TSX disabled by default
x86/speculation/taa: Add mitigation for TSX Async Abort
x86/speculation/taa: Add sysfs reporting for TSX Async Abort
kvm/x86: Export MDS_NO=0 to guests when TSX is enabled
x86/tsx: Add "auto" option to the tsx= cmdline parameter
x86/speculation/taa: Add documentation for TSX Async Abort
x86/tsx: Add config options to set tsx=on|off|auto
x86/speculation/taa: Fix printing of TAA_MSG_SMT on IBRS_ALL CPUs
x86/bugs: Add ITLB_MULTIHIT bug infrastructure
x86/cpu: Add Tremont to the cpu vulnerability whitelist
cpu/speculation: Uninline and export CPU mitigations helpers
Documentation: Add ITLB_MULTIHIT documentation
kvm: x86, powerpc: do not allow clearing largepages debugfs entry
kvm: Convert kvm_lock to a mutex
kvm: mmu: Do not release the page inside mmu_set_spte()
KVM: x86: make FNAME(fetch) and __direct_map more similar
KVM: x86: remove now unneeded hugepage gfn adjustment
KVM: x86: change kvm_mmu_page_get_gfn BUG_ON to WARN_ON
KVM: x86: add tracepoints around __direct_map and FNAME(fetch)
KVM: vmx, svm: always run with EFER.NXE=1 when shadow paging is active
kvm: mmu: ITLB_MULTIHIT mitigation
kvm: Add helper function for creating VM worker threads
kvm: x86: mmu: Recovery of shattered NX large pages
Linux 4.19.84
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I7a820f00c4b868ed677bb49613f835b7e67a3a06
commit 731dc9df975a5da21237a18c3384f811a7a41cc6 upstream.
A kernel module may need to check the value of the "mitigations=" kernel
command line parameter as part of its setup when the module needs
to perform software mitigations for a CPU flaw.
Uninline and export the helper functions surrounding the cpu_mitigations
enum to allow for their usage from a module.
Lastly, privatize the enum and cpu_mitigations variable since the value of
cpu_mitigations can be checked with the exported helper functions.
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 4.19.60 into android-4.19
Changes in 4.19.60
Revert "e1000e: fix cyclic resets at link up with active tx"
e1000e: start network tx queue only when link is up
Input: synaptics - enable SMBUS on T480 thinkpad trackpad
nilfs2: do not use unexported cpu_to_le32()/le32_to_cpu() in uapi header
drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT
firmware: improve LSM/IMA security behaviour
irqchip/gic-v3-its: Fix command queue pointer comparison bug
clk: ti: clkctrl: Fix returning uninitialized data
efi/bgrt: Drop BGRT status field reserved bits check
perf/core: Fix perf_sample_regs_user() mm check
ARM: dts: gemini Fix up DNS-313 compatible string
ARM: omap2: remove incorrect __init annotation
afs: Fix uninitialised spinlock afs_volume::cb_break_lock
x86/apic: Fix integer overflow on 10 bit left shift of cpu_khz
be2net: fix link failure after ethtool offline test
ppp: mppe: Add softdep to arc4
sis900: fix TX completion
ARM: dts: imx6ul: fix PWM[1-4] interrupts
pinctrl: mcp23s08: Fix add_data and irqchip_add_nested call order
dm table: don't copy from a NULL pointer in realloc_argv()
dm verity: use message limit for data block corruption message
x86/boot/64: Fix crash if kernel image crosses page table boundary
x86/boot/64: Add missing fixup_pointer() for next_early_pgt access
HID: chicony: add another quirk for PixArt mouse
HID: multitouch: Add pointstick support for ALPS Touchpad
pinctrl: mediatek: Ignore interrupts that are wake only during resume
cpu/hotplug: Fix out-of-bounds read when setting fail state
pinctrl: mediatek: Update cur_mask in mask/mask ops
linux/kernel.h: fix overflow for DIV_ROUND_UP_ULL
genirq: Delay deactivation in free_irq()
genirq: Fix misleading synchronize_irq() documentation
genirq: Add optional hardware synchronization for shutdown
x86/ioapic: Implement irq_get_irqchip_state() callback
x86/irq: Handle spurious interrupt after shutdown gracefully
x86/irq: Seperate unused system vectors from spurious entry again
ARC: hide unused function unw_hdr_alloc
s390: fix stfle zero padding
s390/qdio: (re-)initialize tiqdio list entries
s390/qdio: don't touch the dsci in tiqdio_add_input_queues()
crypto: talitos - move struct talitos_edesc into talitos.h
crypto: talitos - fix hash on SEC1.
crypto/NX: Set receive window credits to max number of CRBs in RxFIFO
regmap-irq: do not write mask register if mask_base is zero
drm/udl: introduce a macro to convert dev to udl.
drm/udl: Replace drm_dev_unref with drm_dev_put
drm/udl: move to embedding drm device inside udl device.
x86/entry/32: Fix ENDPROC of common_spurious
Linux 4.19.60
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I283306f8640e06b3ffe8bcdca1478a0fd3af77db
[ Upstream commit 33d4a5a7a5b4d02915d765064b2319e90a11cbde ]
Setting invalid value to /sys/devices/system/cpu/cpuX/hotplug/fail
can control `struct cpuhp_step *sp` address, results in the following
global-out-of-bounds read.
Reproducer:
# echo -2 > /sys/devices/system/cpu/cpu0/hotplug/fail
KASAN report:
BUG: KASAN: global-out-of-bounds in write_cpuhp_fail+0x2cd/0x2e0
Read of size 8 at addr ffffffff89734438 by task bash/1941
CPU: 0 PID: 1941 Comm: bash Not tainted 5.2.0-rc6+ #31
Call Trace:
write_cpuhp_fail+0x2cd/0x2e0
dev_attr_store+0x58/0x80
sysfs_kf_write+0x13d/0x1a0
kernfs_fop_write+0x2bc/0x460
vfs_write+0x1e1/0x560
ksys_write+0x126/0x250
do_syscall_64+0xc1/0x390
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f05e4f4c970
The buggy address belongs to the variable:
cpu_hotplug_lock+0x98/0xa0
Memory state around the buggy address:
ffffffff89734300: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00
ffffffff89734380: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffff89734400: 00 00 00 00 fa fa fa fa 00 00 00 00 fa fa fa fa
^
ffffffff89734480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffffff89734500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Add a sanity check for the value written from user space.
Fixes: 1db49484f2 ("smp/hotplug: Hotplug state fail injection")
Signed-off-by: Eiichi Tsukata <devel@etsukata.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: peterz@infradead.org
Link: https://lkml.kernel.org/r/20190627024732.31672-1-devel@etsukata.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Merge 4.19.57 into android-4.19
Changes in 4.19.57
perf ui helpline: Use strlcpy() as a shorter form of strncpy() + explicit set nul
perf help: Remove needless use of strncpy()
perf header: Fix unchecked usage of strncpy()
arm64: Don't unconditionally add -Wno-psabi to KBUILD_CFLAGS
Revert "x86/uaccess, ftrace: Fix ftrace_likely_update() vs. SMAP"
IB/hfi1: Close PSM sdma_progress sleep window
9p/xen: fix check for xenbus_read error in front_probe
9p: Use a slab for allocating requests
9p: embed fcall in req to round down buffer allocs
9p: add a per-client fcall kmem_cache
9p: rename p9_free_req() function
9p: Add refcount to p9_req_t
9p/rdma: do not disconnect on down_interruptible EAGAIN
9p: Rename req to rreq in trans_fd
9p: acl: fix uninitialized iattr access
9p/rdma: remove useless check in cm_event_handler
9p: p9dirent_read: check network-provided name length
9p: potential NULL dereference
9p/trans_fd: abort p9_read_work if req status changed
9p/trans_fd: put worker reqs on destroy
net/9p: include trans_common.h to fix missing prototype warning.
qmi_wwan: Fix out-of-bounds read
Revert "usb: dwc3: gadget: Clear req->needs_extra_trb flag on cleanup"
usb: dwc3: gadget: combine unaligned and zero flags
usb: dwc3: gadget: track number of TRBs per request
usb: dwc3: gadget: use num_trbs when skipping TRBs on ->dequeue()
usb: dwc3: gadget: extract dwc3_gadget_ep_skip_trbs()
usb: dwc3: gadget: introduce cancelled_list
usb: dwc3: gadget: move requests to cancelled_list
usb: dwc3: gadget: remove wait_end_transfer
usb: dwc3: gadget: Clear req->needs_extra_trb flag on cleanup
fs/proc/array.c: allow reporting eip/esp for all coredumping threads
mm/mempolicy.c: fix an incorrect rebind node in mpol_rebind_nodemask
fs/binfmt_flat.c: make load_flat_shared_library() work
clk: socfpga: stratix10: fix divider entry for the emac clocks
mm: soft-offline: return -EBUSY if set_hwpoison_free_buddy_page() fails
mm: hugetlb: soft-offline: dissolve_free_huge_page() return zero on !PageHuge
mm/page_idle.c: fix oops because end_pfn is larger than max_pfn
dm log writes: make sure super sector log updates are written in order
scsi: vmw_pscsi: Fix use-after-free in pvscsi_queue_lck()
x86/speculation: Allow guests to use SSBD even if host does not
x86/microcode: Fix the microcode load on CPU hotplug for real
x86/resctrl: Prevent possible overrun during bitmap operations
KVM: x86/mmu: Allocate PAE root array when using SVM's 32-bit NPT
NFS/flexfiles: Use the correct TCP timeout for flexfiles I/O
cpu/speculation: Warn on unsupported mitigations= parameter
SUNRPC: Clean up initialisation of the struct rpc_rqst
irqchip/mips-gic: Use the correct local interrupt map registers
eeprom: at24: fix unexpected timeout under high load
af_packet: Block execution of tasks waiting for transmit to complete in AF_PACKET
bonding: Always enable vlan tx offload
ipv4: Use return value of inet_iif() for __raw_v4_lookup in the while loop
net/packet: fix memory leak in packet_set_ring()
net: remove duplicate fetch in sock_getsockopt
net: stmmac: fixed new system time seconds value calculation
net: stmmac: set IC bit when transmitting frames with HW timestamp
sctp: change to hold sk after auth shkey is created successfully
team: Always enable vlan tx offload
tipc: change to use register_pernet_device
tipc: check msg->req data len in tipc_nl_compat_bearer_disable
tun: wake up waitqueues after IFF_UP is set
bpf: simplify definition of BPF_FIB_LOOKUP related flags
bpf: lpm_trie: check left child of last leftmost node for NULL
bpf: fix nested bpf tracepoints with per-cpu data
bpf: fix unconnected udp hooks
bpf: udp: Avoid calling reuseport's bpf_prog from udp_gro
bpf: udp: ipv6: Avoid running reuseport's bpf_prog from __udp6_lib_err
arm64: futex: Avoid copying out uninitialised stack in failed cmpxchg()
bpf, arm64: use more scalable stadd over ldxr / stxr loop in xadd
futex: Update comments and docs about return values of arch futex code
RDMA: Directly cast the sockaddr union to sockaddr
tipc: pass tunnel dev as NULL to udp_tunnel(6)_xmit_skb
usb: dwc3: Reset num_trbs after skipping
arm64: insn: Fix ldadd instruction encoding
Linux 4.19.57
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit 1bf72720281770162c87990697eae1ba2f1d917a upstream.
Currently, if the user specifies an unsupported mitigation strategy on the
kernel command line, it will be ignored silently. The code will fall back
to the default strategy, possibly leaving the system more vulnerable than
expected.
This may happen due to e.g. a simple typo, or, for a stable kernel release,
because not all mitigation strategies have been backported.
Inform the user by printing a message.
Fixes: 98af8452945c5565 ("cpu/speculation: Add 'mitigations=' cmdline option")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190516070935.22546-1-geert@linux-m68k.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 4.19.50 into android-4.19
Changes in 4.19.50
ethtool: fix potential userspace buffer overflow
Fix memory leak in sctp_process_init
ipv4: not do cache for local delivery if bc_forwarding is enabled
ipv6: fix the check before getting the cookie in rt6_get_cookie
neighbor: Call __ipv4_neigh_lookup_noref in neigh_xmit
net: ethernet: ti: cpsw_ethtool: fix ethtool ring param set
net/mlx4_en: ethtool, Remove unsupported SFP EEPROM high pages query
net: mvpp2: Use strscpy to handle stat strings
net: rds: fix memory leak in rds_ib_flush_mr_pool
net: sfp: read eeprom in maximum 16 byte increments
net/tls: replace the sleeping lock around RX resync with a bit lock
packet: unconditionally free po->rollover
pktgen: do not sleep with the thread lock held.
Revert "fib_rules: return 0 directly if an exactly same rule exists when NLM_F_EXCL not supplied"
ipv6: use READ_ONCE() for inet->hdrincl as in ipv4
ipv6: fix EFAULT on sendto with icmpv6 and hdrincl
mtd: spinand: macronix: Fix ECC Status Read
rcu: locking and unlocking need to always be at least barriers
parisc: Use implicit space register selection for loading the coherence index of I/O pdirs
NFSv4.1: Again fix a race where CB_NOTIFY_LOCK fails to wake a waiter
NFSv4.1: Fix bug only first CB_NOTIFY_LOCK is handled
fuse: fallocate: fix return with locked inode
pstore: Remove needless lock during console writes
pstore: Convert buf_lock to semaphore
pstore: Set tfm to NULL on free_buf_for_compression
pstore/ram: Run without kernel crash dump region
x86/power: Fix 'nosmt' vs hibernation triple fault during resume
x86/insn-eval: Fix use-after-free access to LDT entry
i2c: xiic: Add max_read_len quirk
s390/mm: fix address space detection in exception handling
xen-blkfront: switch kcalloc to kvcalloc for large array allocation
MIPS: Bounds check virt_addr_valid
MIPS: pistachio: Build uImage.gz by default
Revert "MIPS: perf: ath79: Fix perfcount IRQ assignment"
genwqe: Prevent an integer overflow in the ioctl
test_firmware: Use correct snprintf() limit
drm/gma500/cdv: Check vbt config bits when detecting lvds panels
drm/msm: fix fb references in async update
drm: add non-desktop quirk for Valve HMDs
drm/nouveau: add kconfig option to turn off nouveau legacy contexts. (v3)
drm: add non-desktop quirks to Sensics and OSVR headsets.
drm/amdgpu/psp: move psp version specific function pointers to early_init
drm/radeon: prefer lower reference dividers
drm/amdgpu: remove ATPX_DGPU_REQ_POWER_FOR_DISPLAYS check when hotplug-in
drm/i915: Fix I915_EXEC_RING_MASK
drm/i915/fbc: disable framebuffer compression on GeminiLake
drm/i915: Maintain consistent documentation subsection ordering
drm: don't block fb changes for async plane updates
drm/i915/gvt: Initialize intel_gvt_gtt_entry in stack
TTY: serial_core, add ->install
ipv4: Define __ipv4_neigh_lookup_noref when CONFIG_INET is disabled
ethtool: check the return value of get_regs_len
Linux 4.19.50
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit ec527c318036a65a083ef68d8ba95789d2212246 upstream.
As explained in
0cc3cd2165 ("cpu/hotplug: Boot HT siblings at least once")
we always, no matter what, have to bring up x86 HT siblings during boot at
least once in order to avoid first MCE bringing the system to its knees.
That means that whenever 'nosmt' is supplied on the kernel command-line,
all the HT siblings are as a result sitting in mwait or cpudile after
going through the online-offline cycle at least once.
This causes a serious issue though when a kernel, which saw 'nosmt' on its
commandline, is going to perform resume from hibernation: if the resume
from the hibernated image is successful, cr3 is flipped in order to point
to the address space of the kernel that is being resumed, which in turn
means that all the HT siblings are all of a sudden mwaiting on address
which is no longer valid.
That results in triple fault shortly after cr3 is switched, and machine
reboots.
Fix this by always waking up all the SMT siblings before initiating the
'restore from hibernation' process; this guarantees that all the HT
siblings will be properly carried over to the resumed kernel waiting in
resume_play_dead(), and acted upon accordingly afterwards, based on the
target kernel configuration.
Symmetricaly, the resumed kernel has to push the SMT siblings to mwait
again in case it has SMT disabled; this means it has to online all
the siblings when resuming (so that they come out of hlt) and offline
them again to let them reach mwait.
Cc: 4.19+ <stable@vger.kernel.org> # v4.19+
Debugged-by: Thomas Gleixner <tglx@linutronix.de>
Fixes: 0cc3cd2165 ("cpu/hotplug: Boot HT siblings at least once")
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 98af8452945c55652de68536afdde3b520fec429 upstream
Keeping track of the number of mitigations for all the CPU speculation
bugs has become overwhelming for many users. It's getting more and more
complicated to decide which mitigations are needed for a given
architecture. Complicating matters is the fact that each arch tends to
have its own custom way to mitigate the same vulnerability.
Most users fall into a few basic categories:
a) they want all mitigations off;
b) they want all reasonable mitigations on, with SMT enabled even if
it's vulnerable; or
c) they want all reasonable mitigations on, with SMT disabled if
vulnerable.
Define a set of curated, arch-independent options, each of which is an
aggregation of existing options:
- mitigations=off: Disable all mitigations.
- mitigations=auto: [default] Enable all the default mitigations, but
leave SMT enabled, even if it's vulnerable.
- mitigations=auto,nosmt: Enable all the default mitigations, disabling
SMT if needed by a mitigation.
Currently, these options are placeholders which don't actually do
anything. They will be fleshed out in upcoming patches.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jiri Kosina <jkosina@suse.cz> (on x86)
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Jon Masters <jcm@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arch@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Tyler Hicks <tyhicks@canonical.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Steven Price <steven.price@arm.com>
Cc: Phil Auld <pauld@redhat.com>
Link: https://lkml.kernel.org/r/b07a8ef9b7c5055c3a4637c87d07c296d5016fe0.1555085500.git.jpoimboe@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 4.19.34 into android-4.19
Changes in 4.19.34
arm64: debug: Don't propagate UNKNOWN FAR into si_code for debug signals
ext4: cleanup bh release code in ext4_ind_remove_space()
tty/serial: atmel: Add is_half_duplex helper
tty/serial: atmel: RS485 HD w/DMA: enable RX after TX is stopped
CIFS: fix POSIX lock leak and invalid ptr deref
h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-
f2fs: fix to adapt small inline xattr space in __find_inline_xattr()
f2fs: fix to avoid deadlock in f2fs_read_inline_dir()
tracing: kdb: Fix ftdump to not sleep
net/mlx5: Avoid panic when setting vport rate
net/mlx5: Avoid panic when setting vport mac, getting vport config
gpio: gpio-omap: fix level interrupt idling
include/linux/relay.h: fix percpu annotation in struct rchan
sysctl: handle overflow for file-max
net: stmmac: Avoid sometimes uninitialized Clang warnings
enic: fix build warning without CONFIG_CPUMASK_OFFSTACK
libbpf: force fixdep compilation at the start of the build
scsi: hisi_sas: Set PHY linkrate when disconnected
scsi: hisi_sas: Fix a timeout race of driver internal and SMP IO
iio: adc: fix warning in Qualcomm PM8xxx HK/XOADC driver
x86/hyperv: Fix kernel panic when kexec on HyperV
perf c2c: Fix c2c report for empty numa node
mm/sparse: fix a bad comparison
mm/cma.c: cma_declare_contiguous: correct err handling
mm/page_ext.c: fix an imbalance with kmemleak
mm, swap: bounds check swap_info array accesses to avoid NULL derefs
mm,oom: don't kill global init via memory.oom.group
memcg: killed threads should not invoke memcg OOM killer
mm, mempolicy: fix uninit memory access
mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512!
mm/slab.c: kmemleak no scan alien caches
ocfs2: fix a panic problem caused by o2cb_ctl
f2fs: do not use mutex lock in atomic context
fs/file.c: initialize init_files.resize_wait
page_poison: play nicely with KASAN
cifs: use correct format characters
dm thin: add sanity checks to thin-pool and external snapshot creation
f2fs: fix to check inline_xattr_size boundary correctly
cifs: Accept validate negotiate if server return NT_STATUS_NOT_SUPPORTED
cifs: Fix NULL pointer dereference of devname
netfilter: nf_tables: check the result of dereferencing base_chain->stats
netfilter: conntrack: tcp: only close if RST matches exact sequence
jbd2: fix invalid descriptor block checksum
fs: fix guard_bio_eod to check for real EOD errors
tools lib traceevent: Fix buffer overflow in arg_eval
PCI/PME: Fix hotplug/sysfs remove deadlock in pcie_pme_remove()
wil6210: check null pointer in _wil_cfg80211_merge_extra_ies
mt76: fix a leaked reference by adding a missing of_node_put
crypto: crypto4xx - add missing of_node_put after of_device_is_available
crypto: cavium/zip - fix collision with generic cra_driver_name
usb: chipidea: Grab the (legacy) USB PHY by phandle first
powerpc/powernv/ioda: Fix locked_vm counting for memory used by IOMMU tables
scsi: core: replace GFP_ATOMIC with GFP_KERNEL in scsi_scan.c
kbuild: invoke syncconfig if include/config/auto.conf.cmd is missing
powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc
coresight: etm4x: Add support to enable ETMv4.2
serial: 8250_pxa: honor the port number from devicetree
ARM: 8840/1: use a raw_spinlock_t in unwind
iommu/io-pgtable-arm-v7s: Only kmemleak_ignore L2 tables
powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area callback
btrfs: qgroup: Make qgroup async transaction commit more aggressive
mmc: omap: fix the maximum timeout setting
net: dsa: mv88e6xxx: Add lockdep classes to fix false positive splat
e1000e: Fix -Wformat-truncation warnings
mlxsw: spectrum: Avoid -Wformat-truncation warnings
platform/x86: ideapad-laptop: Fix no_hw_rfkill_list for Lenovo RESCUER R720-15IKBN
platform/mellanox: mlxreg-hotplug: Fix KASAN warning
loop: set GENHD_FL_NO_PART_SCAN after blkdev_reread_part()
IB/mlx4: Increase the timeout for CM cache
clk: fractional-divider: check parent rate only if flag is set
perf annotate: Fix getting source line failure
ASoC: qcom: Fix of-node refcount unbalance in qcom_snd_parse_of()
cpufreq: acpi-cpufreq: Report if CPU doesn't support boost technologies
efi: cper: Fix possible out-of-bounds access
s390/ism: ignore some errors during deregistration
scsi: megaraid_sas: return error when create DMA pool failed
scsi: fcoe: make use of fip_mode enum complete
drm/amd/display: Clear stream->mode_changed after commit
perf test: Fix failure of 'evsel-tp-sched' test on s390
mwifiex: don't advertise IBSS features without FW support
perf report: Don't shadow inlined symbol with different addr range
SoC: imx-sgtl5000: add missing put_device()
media: ov7740: fix runtime pm initialization
media: sh_veu: Correct return type for mem2mem buffer helpers
media: s5p-jpeg: Correct return type for mem2mem buffer helpers
media: rockchip/rga: Correct return type for mem2mem buffer helpers
media: s5p-g2d: Correct return type for mem2mem buffer helpers
media: mx2_emmaprp: Correct return type for mem2mem buffer helpers
media: mtk-jpeg: Correct return type for mem2mem buffer helpers
mt76: usb: do not run mt76u_queues_deinit twice
xen/gntdev: Do not destroy context while dma-bufs are in use
vfs: fix preadv64v2 and pwritev64v2 compat syscalls with offset == -1
HID: intel-ish-hid: avoid binding wrong ishtp_cl_device
cgroup, rstat: Don't flush subtree root unless necessary
jbd2: fix race when writing superblock
leds: lp55xx: fix null deref on firmware load failure
perf report: Add s390 diagnosic sampling descriptor size
iwlwifi: pcie: fix emergency path
ACPI / video: Refactor and fix dmi_is_desktop()
selftests: skip seccomp get_metadata test if not real root
kprobes: Prohibit probing on bsearch()
kprobes: Prohibit probing on RCU debug routine
netfilter: conntrack: fix cloned unconfirmed skb->_nfct race in __nf_conntrack_confirm
ARM: 8833/1: Ensure that NEON code always compiles with Clang
ARM: dts: meson8b: fix the Ethernet data line signals in eth_rgmii_pins
ALSA: PCM: check if ops are defined before suspending PCM
ath10k: fix shadow register implementation for WCN3990
usb: f_fs: Avoid crash due to out-of-scope stack ptr access
sched/topology: Fix percpu data types in struct sd_data & struct s_data
bcache: fix input overflow to cache set sysfs file io_error_halflife
bcache: fix input overflow to sequential_cutoff
bcache: fix potential div-zero error of writeback_rate_i_term_inverse
bcache: improve sysfs_strtoul_clamp()
genirq: Avoid summation loops for /proc/stat
net: marvell: mvpp2: fix stuck in-band SGMII negotiation
iw_cxgb4: fix srqidx leak during connection abort
net: phy: consider latched link-down status in polling mode
fbdev: fbmem: fix memory access if logo is bigger than the screen
cdrom: Fix race condition in cdrom_sysctl_register
drm: rcar-du: add missing of_node_put
drm/amd/display: Don't re-program planes for DPMS changes
drm/amd/display: Disconnect mpcc when changing tg
perf/aux: Make perf_event accessible to setup_aux()
e1000e: fix cyclic resets at link up with active tx
e1000e: Exclude device from suspend direct complete optimization
platform/x86: intel_pmc_core: Fix PCH IP sts reading
i2c: of: Try to find an I2C adapter matching the parent
staging: spi: mt7621: Add return code check on device_reset()
iwlwifi: mvm: fix RFH config command with >=10 CPUs
ASoC: fsl-asoc-card: fix object reference leaks in fsl_asoc_card_probe
sched/debug: Initialize sd_sysctl_cpus if !CONFIG_CPUMASK_OFFSTACK
efi/memattr: Don't bail on zero VA if it equals the region's PA
sched/core: Use READ_ONCE()/WRITE_ONCE() in move_queued_task()/task_rq_lock()
drm/vkms: Bugfix extra vblank frame
ARM: dts: lpc32xx: Remove leading 0x and 0s from bindings notation
efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted
soc: qcom: gsbi: Fix error handling in gsbi_probe()
mt7601u: bump supported EEPROM version
ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of
ARM: avoid Cortex-A9 livelock on tight dmb loops
block, bfq: fix in-service-queue check for queue merging
bpf: fix missing prototype warnings
selftests/bpf: skip verifier tests for unsupported program types
powerpc/64s: Clear on-stack exception marker upon exception return
cgroup/pids: turn cgroup_subsys->free() into cgroup_subsys->release() to fix the accounting
backlight: pwm_bl: Use gpiod_get_value_cansleep() to get initial state
tty: increase the default flip buffer limit to 2*640K
powerpc/pseries: Perform full re-add of CPU for topology update post-migration
drm/amd/display: Enable vblank interrupt during CRC capture
ALSA: dice: add support for Solid State Logic Duende Classic/Mini
usb: dwc3: gadget: Fix OTG events when gadget driver isn't loaded
platform/x86: intel-hid: Missing power button release on some Dell models
perf script python: Use PyBytes for attr in trace-event-python
perf script python: Add trace_context extension module to sys.modules
media: mt9m111: set initial frame size other than 0x0
hwrng: virtio - Avoid repeated init of completion
soc/tegra: fuse: Fix illegal free of IO base address
HID: intel-ish: ipc: handle PIMR before ish_wakeup also clear PISR busy_clear bit
f2fs: UBSAN: set boolean value iostat_enable correctly
hpet: Fix missing '=' character in the __setup() code of hpet_mmap_enable
cpu/hotplug: Mute hotplug lockdep during init
dmaengine: imx-dma: fix warning comparison of distinct pointer types
dmaengine: qcom_hidma: assign channel cookie correctly
dmaengine: qcom_hidma: initialize tx flags in hidma_prep_dma_*
netfilter: physdev: relax br_netfilter dependency
media: rcar-vin: Allow independent VIN link enablement
media: s5p-jpeg: Check for fmt_ver_flag when doing fmt enumeration
regulator: act8865: Fix act8600_sudcdc_voltage_ranges setting
pinctrl: meson: meson8b: add the eth_rxd2 and eth_rxd3 pins
drm: Auto-set allow_fb_modifiers when given modifiers at plane init
drm/nouveau: Stop using drm_crtc_force_disable
x86/build: Specify elf_i386 linker emulation explicitly for i386 objects
selinux: do not override context on context mounts
brcmfmac: Use firmware_request_nowarn for the clm_blob
wlcore: Fix memory leak in case wl12xx_fetch_firmware failure
x86/build: Mark per-CPU symbols as absolute explicitly for LLD
drm/fb-helper: fix leaks in error path of drm_fb_helper_fbdev_setup
clk: meson: clean-up clock registration
clk: rockchip: fix frac settings of GPLL clock for rk3328
dmaengine: tegra: avoid overflow of byte tracking
Input: soc_button_array - fix mapping of the 5th GPIO in a PNP0C40 device
drm/dp/mst: Configure no_stop_bit correctly for remote i2c xfers
net: stmmac: Avoid one more sometimes uninitialized Clang warning
ACPI / video: Extend chassis-type detection with a "Lunch Box" check
bcache: fix potential div-zero error of writeback_rate_p_term_inverse
kprobes/x86: Blacklist non-attachable interrupt functions
Linux 4.19.34
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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Merge 4.19.33 into android-4.19
Changes in 4.19.33
Bluetooth: Check L2CAP option sizes returned from l2cap_get_conf_opt
Bluetooth: Verify that l2cap_get_conf_opt provides large enough buffer
ipmi_si: Fix crash when using hard-coded device
dccp: do not use ipv6 header for ipv4 flow
genetlink: Fix a memory leak on error path
gtp: change NET_UDP_TUNNEL dependency to select
ipv6: make ip6_create_rt_rcu return ip6_null_entry instead of NULL
mac8390: Fix mmio access size probe
mISDN: hfcpci: Test both vendor & device ID for Digium HFC4S
net: aquantia: fix rx checksum offload for UDP/TCP over IPv6
net: datagram: fix unbounded loop in __skb_try_recv_datagram()
net/packet: Set __GFP_NOWARN upon allocation in alloc_pg_vec
net: phy: meson-gxl: fix interrupt support
net: rose: fix a possible stack overflow
net: stmmac: fix memory corruption with large MTUs
net-sysfs: call dev_hold if kobject_init_and_add success
packets: Always register packet sk in the same order
rhashtable: Still do rehash when we get EEXIST
sctp: get sctphdr by offset in sctp_compute_cksum
sctp: use memdup_user instead of vmemdup_user
tcp: do not use ipv6 header for ipv4 flow
tipc: allow service ranges to be connect()'ed on RDM/DGRAM
tipc: change to check tipc_own_id to return in tipc_net_stop
tipc: fix cancellation of topology subscriptions
tun: properly test for IFF_UP
vrf: prevent adding upper devices
vxlan: Don't call gro_cells_destroy() before device is unregistered
ila: Fix rhashtable walker list corruption
net: sched: fix cleanup NULL pointer exception in act_mirr
thunderx: enable page recycling for non-XDP case
thunderx: eliminate extra calls to put_page() for pages held for recycling
tun: add a missing rcu_read_unlock() in error path
powerpc/fsl: Add infrastructure to fixup branch predictor flush
powerpc/fsl: Add macro to flush the branch predictor
powerpc/fsl: Emulate SPRN_BUCSR register
powerpc/fsl: Add nospectre_v2 command line argument
powerpc/fsl: Flush the branch predictor at each kernel entry (64bit)
powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit)
powerpc/fsl: Flush branch predictor when entering KVM
powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used
powerpc/fsl: Update Spectre v2 reporting
powerpc/fsl: Fixed warning: orphan section `__btb_flush_fixup'
powerpc/fsl: Fix the flush of branch predictor.
powerpc/security: Fix spectre_v2 reporting
Btrfs: fix incorrect file size after shrinking truncate and fsync
btrfs: remove WARN_ON in log_dir_items
btrfs: don't report readahead errors and don't update statistics
btrfs: raid56: properly unmap parity page in finish_parity_scrub()
btrfs: Avoid possible qgroup_rsv_size overflow in btrfs_calculate_inode_block_rsv_size
Btrfs: fix assertion failure on fsync with NO_HOLES enabled
ARM: imx6q: cpuidle: fix bug that CPU might not wake up at expected time
powerpc: bpf: Fix generation of load/store DW instructions
vfio: ccw: only free cp on final interrupt
NFS: fix mount/umount race in nlmclnt.
NFSv4.1 don't free interrupted slot on open
net: dsa: qca8k: remove leftover phy accessors
ALSA: rawmidi: Fix potential Spectre v1 vulnerability
ALSA: seq: oss: Fix Spectre v1 vulnerability
ALSA: pcm: Fix possible OOB access in PCM oss plugins
ALSA: pcm: Don't suspend stream in unrecoverable PCM state
ALSA: hda/realtek - Add support headset mode for DELL WYSE AIO
ALSA: hda/realtek - Add support headset mode for New DELL WYSE NB
ALSA: hda/realtek: Enable headset MIC of Acer AIO with ALC286
ALSA: hda/realtek: Enable headset MIC of Acer Aspire Z24-890 with ALC286
ALSA: hda/realtek - Add support for Acer Aspire E5-523G/ES1-432 headset mic
ALSA: hda/realtek: Enable ASUS X441MB and X705FD headset MIC with ALC256
ALSA: hda/realtek: Enable headset mic of ASUS P5440FF with ALC256
ALSA: hda/realtek: Enable headset MIC of ASUS X430UN and X512DK with ALC256
ALSA: hda/realtek - Fix speakers on Acer Predator Helios 500 Ryzen laptops
kbuild: modversions: Fix relative CRC byte order interpretation
fs/open.c: allow opening only regular files during execve()
ocfs2: fix inode bh swapping mixup in ocfs2_reflink_inodes_lock
scsi: sd: Fix a race between closing an sd device and sd I/O
scsi: sd: Quiesce warning if device does not report optimal I/O size
scsi: zfcp: fix rport unblock if deleted SCSI devices on Scsi_Host
scsi: zfcp: fix scsi_eh host reset with port_forced ERP for non-NPIV FCP devices
drm/rockchip: vop: reset scale mode when win is disabled
tty: mxs-auart: fix a potential NULL pointer dereference
tty: atmel_serial: fix a potential NULL pointer dereference
tty: serial: qcom_geni_serial: Initialize baud in qcom_geni_console_setup
staging: comedi: ni_mio_common: Fix divide-by-zero for DIO cmdtest
staging: speakup_soft: Fix alternate speech with other synths
staging: vt6655: Remove vif check from vnt_interrupt
staging: vt6655: Fix interrupt race condition on device start up.
staging: erofs: fix to handle error path of erofs_vmap()
serial: max310x: Fix to avoid potential NULL pointer dereference
serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference
serial: sh-sci: Fix setting SCSCR_TIE while transferring data
USB: serial: cp210x: add new device id
USB: serial: ftdi_sio: add additional NovaTech products
USB: serial: mos7720: fix mos_parport refcount imbalance on error path
USB: serial: option: set driver_info for SIM5218 and compatibles
USB: serial: option: add support for Quectel EM12
USB: serial: option: add Olicard 600
Disable kgdboc failed by echo space to /sys/module/kgdboc/parameters/kgdboc
fs/proc/proc_sysctl.c: fix NULL pointer dereference in put_links
drm/vgem: fix use-after-free when drm_gem_handle_create() fails
drm/vkms: fix use-after-free when drm_gem_handle_create() fails
drm/i915/gvt: Fix MI_FLUSH_DW parsing with correct index check
gpio: exar: add a check for the return value of ida_simple_get fails
gpio: adnp: Fix testing wrong value in adnp_gpio_direction_input
phy: sun4i-usb: Support set_mode to USB_HOST for non-OTG PHYs
usb: mtu3: fix EXTCON dependency
USB: gadget: f_hid: fix deadlock in f_hidg_write()
usb: common: Consider only available nodes for dr_mode
usb: host: xhci-rcar: Add XHCI_TRUST_TX_LENGTH quirk
xhci: Fix port resume done detection for SS ports with LPM enabled
usb: xhci: dbc: Don't free all memory with spinlock held
xhci: Don't let USB3 ports stuck in polling state prevent suspend
usb: cdc-acm: fix race during wakeup blocking TX traffic
mm: add support for kmem caches in DMA32 zone
iommu/io-pgtable-arm-v7s: request DMA32 memory, and improve debugging
mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified
mm/migrate.c: add missing flush_dcache_page for non-mapped page migrate
perf pmu: Fix parser error for uncore event alias
perf intel-pt: Fix TSC slip
objtool: Query pkg-config for libelf location
powerpc/pseries/energy: Use OF accessor functions to read ibm,drc-indexes
powerpc/64: Fix memcmp reading past the end of src/dest
watchdog: Respect watchdog cpumask on CPU hotplug
cpu/hotplug: Prevent crash when CPU bringup fails on CONFIG_HOTPLUG_CPU=n
x86/smp: Enforce CONFIG_HOTPLUG_CPU when SMP=y
KVM: Reject device ioctls from processes other than the VM's creator
KVM: x86: update %rip after emulating IO
KVM: x86: Emulate MSR_IA32_ARCH_CAPABILITIES on AMD hosts
staging: erofs: fix error handling when failed to read compresssed data
staging: erofs: keep corrupted fs from crashing kernel in erofs_readdir()
bpf: do not restore dst_reg when cur_state is freed
drivers: base: Helpers for adding device connection descriptions
platform: x86: intel_cht_int33fe: Register all connections at once
platform: x86: intel_cht_int33fe: Add connection for the DP alt mode
platform: x86: intel_cht_int33fe: Add connections for the USB Type-C port
usb: typec: class: Don't use port parent for getting mux handles
platform: x86: intel_cht_int33fe: Remove the old connections for the muxes
Linux 4.19.33
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit 206b92353c839c0b27a0b9bec24195f93fd6cf7a upstream.
Tianyu reported a crash in a CPU hotplug teardown callback when booting a
kernel which has CONFIG_HOTPLUG_CPU disabled with the 'nosmt' boot
parameter.
It turns out that the SMP=y CONFIG_HOTPLUG_CPU=n case has been broken
forever in case that a bringup callback fails. Unfortunately this issue was
not recognized when the CPU hotplug code was reworked, so the shortcoming
just stayed in place.
When a bringup callback fails, the CPU hotplug code rolls back the
operation and takes the CPU offline.
The 'nosmt' command line argument uses a bringup failure to abort the
bringup of SMT sibling CPUs. This partial bringup is required due to the
MCE misdesign on Intel CPUs.
With CONFIG_HOTPLUG_CPU=y the rollback works perfectly fine, but
CONFIG_HOTPLUG_CPU=n lacks essential mechanisms to exercise the low level
teardown of a CPU including the synchronizations in various facilities like
RCU, NOHZ and others.
As a consequence the teardown callbacks which must be executed on the
outgoing CPU within stop machine with interrupts disabled are executed on
the control CPU in interrupt enabled and preemptible context causing the
kernel to crash and burn. The pre state machine code has a different
failure mode which is more subtle and resulting in a less obvious use after
free crash because the control side frees resources which are still in use
by the undead CPU.
But this is not a x86 only problem. Any architecture which supports the
SMP=y HOTPLUG_CPU=n combination suffers from the same issue. It's just less
likely to be triggered because in 99.99999% of the cases all bringup
callbacks succeed.
The easy solution of making HOTPLUG_CPU mandatory for SMP is not working on
all architectures as the following architectures have either no hotplug
support at all or not all subarchitectures support it:
alpha, arc, hexagon, openrisc, riscv, sparc (32bit), mips (partial).
Crashing the kernel in such a situation is not an acceptable state
either.
Implement a minimal rollback variant by limiting the teardown to the point
where all regular teardown callbacks have been invoked and leave the CPU in
the 'dead' idle state. This has the following consequences:
- the CPU is brought down to the point where the stop_machine takedown
would happen.
- the CPU stays there forever and is idle
- The CPU is cleared in the CPU active mask, but not in the CPU online
mask which is a legit state.
- Interrupts are not forced away from the CPU
- All facilities which only look at online mask would still see it, but
that is the case during normal hotplug/unplug operations as well. It's
just a (way) longer time frame.
This will expose issues, which haven't been exposed before or only seldom,
because now the normally transient state of being non active but online is
a permanent state. In testing this exposed already an issue vs. work queues
where the vmstat code schedules work on the almost dead CPU which ends up
in an unbound workqueue and triggers 'preemtible context' warnings. This is
not a problem of this change, it merily exposes an already existing issue.
Still this is better than crashing fully without a chance to debug it.
This is mainly thought as workaround for those architectures which do not
support HOTPLUG_CPU. All others should enforce HOTPLUG_CPU for SMP.
Fixes: 2e1a3483ce ("cpu/hotplug: Split out the state walk into functions")
Reported-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Konrad Wilk <konrad.wilk@oracle.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Mukesh Ojha <mojha@codeaurora.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Rik van Riel <riel@surriel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Micheal Kelley <michael.h.kelley@microsoft.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190326163811.503390616@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 4.19.21 into android-4.19
Changes in 4.19.21
devres: Align data[] to ARCH_KMALLOC_MINALIGN
drm/bufs: Fix Spectre v1 vulnerability
staging: iio: adc: ad7280a: handle error from __ad7280_read32()
drm/vgem: Fix vgem_init to get drm device available.
pinctrl: bcm2835: Use raw spinlock for RT compatibility
ASoC: Intel: mrfld: fix uninitialized variable access
gpiolib: Fix possible use after free on label
drm/sun4i: Initialize registers in tcon-top driver
genirq/affinity: Spread IRQs to all available NUMA nodes
gpu: ipu-v3: image-convert: Prevent race between run and unprepare
nds32: Fix gcc 8.0 compiler option incompatible.
wil6210: fix reset flow for Talyn-mb
wil6210: fix memory leak in wil_find_tx_bcast_2
ath10k: assign 'n_cipher_suites' for WCN3990
ath9k: dynack: use authentication messages for 'late' ack
scsi: lpfc: Correct LCB RJT handling
scsi: mpt3sas: Call sas_remove_host before removing the target devices
scsi: lpfc: Fix LOGO/PLOGI handling when triggerd by ABTS Timeout event
ARM: 8808/1: kexec:offline panic_smp_self_stop CPU
clk: boston: fix possible memory leak in clk_boston_setup()
dlm: Don't swamp the CPU with callbacks queued during recovery
x86/PCI: Fix Broadcom CNB20LE unintended sign extension (redux)
powerpc/pseries: add of_node_put() in dlpar_detach_node()
crypto: aes_ti - disable interrupts while accessing S-box
drm/vc4: ->x_scaling[1] should never be set to VC4_SCALING_NONE
serial: fsl_lpuart: clear parity enable bit when disable parity
ptp: check gettime64 return code in PTP_SYS_OFFSET ioctl
MIPS: Boston: Disable EG20T prefetch
dpaa2-ptp: defer probe when portal allocation failed
iwlwifi: fw: do not set sgi bits for HE connection
staging:iio:ad2s90: Make probe handle spi_setup failure
fpga: altera-cvp: Fix registration for CvP incapable devices
Tools: hv: kvp: Fix a warning of buffer overflow with gcc 8.0.1
fpga: altera-cvp: fix 'bad IO access' on x86_64
vbox: fix link error with 'gcc -Og'
platform/chrome: don't report EC_MKBP_EVENT_SENSOR_FIFO as wakeup
i40e: prevent overlapping tx_timeout recover
scsi: hisi_sas: change the time of SAS SSP connection
staging: iio: ad7780: update voltage on read
usbnet: smsc95xx: fix rx packet alignment
drm/rockchip: fix for mailbox read size
ARM: OMAP2+: hwmod: Fix some section annotations
drm/amd/display: fix gamma not being applied correctly
drm/amd/display: calculate stream->phy_pix_clk before clock mapping
bpf: libbpf: retry map creation without the name
net/mlx5: EQ, Use the right place to store/read IRQ affinity hint
modpost: validate symbol names also in find_elf_symbol
perf tools: Add Hygon Dhyana support
soc/tegra: Don't leak device tree node reference
media: rc: ensure close() is called on rc_unregister_device
media: video-i2c: avoid accessing released memory area when removing driver
media: mtk-vcodec: Release device nodes in mtk_vcodec_init_enc_pm()
staging: erofs: fix the definition of DBG_BUGON
clk: meson: meson8b: do not use cpu_div3 for cpu_scale_out_sel
clk: meson: meson8b: fix the width of the cpu_scale_div clock
clk: meson: meson8b: mark the CPU clock as CLK_IS_CRITICAL
ptp: Fix pass zero to ERR_PTR() in ptp_clock_register
dmaengine: xilinx_dma: Remove __aligned attribute on zynqmp_dma_desc_ll
powerpc/32: Add .data..Lubsan_data*/.data..Lubsan_type* sections explicitly
iio: adc: meson-saradc: check for devm_kasprintf failure
iio: adc: meson-saradc: fix internal clock names
iio: accel: kxcjk1013: Add KIOX010A ACPI Hardware-ID
media: adv*/tc358743/ths8200: fill in min width/height/pixelclock
ACPI: SPCR: Consider baud rate 0 as preconfigured state
staging: pi433: fix potential null dereference
f2fs: move dir data flush to write checkpoint process
f2fs: fix race between write_checkpoint and write_begin
f2fs: fix wrong return value of f2fs_acl_create
i2c: sh_mobile: add support for r8a77990 (R-Car E3)
arm64: io: Ensure calls to delay routines are ordered against prior readX()
net: aquantia: return 'err' if set MPI_DEINIT state fails
sunvdc: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN
soc: bcm: brcmstb: Don't leak device tree node reference
nfsd4: fix crash on writing v4_end_grace before nfsd startup
drm: Clear state->acquire_ctx before leaving drm_atomic_helper_commit_duplicated_state()
perf: arm_spe: handle devm_kasprintf() failure
arm64: io: Ensure value passed to __iormb() is held in a 64-bit register
Thermal: do not clear passive state during system sleep
thermal: Fix locking in cooling device sysfs update cur_state
firmware/efi: Add NULL pointer checks in efivars API functions
s390/zcrypt: improve special ap message cmd handling
mt76x0: dfs: fix IBI_R11 configuration on non-radar channels
arm64: ftrace: don't adjust the LR value
drm/v3d: Fix prime imports of buffers from other drivers.
ARM: dts: mmp2: fix TWSI2
ARM: dts: aspeed: add missing memory unit-address
x86/fpu: Add might_fault() to user_insn()
media: i2c: TDA1997x: select CONFIG_HDMI
media: DaVinci-VPBE: fix error handling in vpbe_initialize()
smack: fix access permissions for keyring
xtensa: xtfpga.dtsi: fix dtc warnings about SPI
usb: dwc3: Correct the logic for checking TRB full in __dwc3_prepare_one_trb()
usb: dwc2: Disable power down feature on Samsung SoCs
usb: hub: delay hub autosuspend if USB3 port is still link training
timekeeping: Use proper seqcount initializer
usb: mtu3: fix the issue about SetFeature(U1/U2_Enable)
clk: sunxi-ng: a33: Set CLK_SET_RATE_PARENT for all audio module clocks
media: imx274: select REGMAP_I2C
drm/amdgpu/powerplay: fix clock stretcher limits on polaris (v2)
tipc: fix node keep alive interval calculation
driver core: Move async_synchronize_full call
kobject: return error code if writing /sys/.../uevent fails
IB/hfi1: Unreserve a reserved request when it is completed
usb: dwc3: trace: add missing break statement to make compiler happy
gpio: mt7621: report failure of devm_kasprintf()
gpio: mt7621: pass mediatek_gpio_bank_probe() failure up the stack
pinctrl: sx150x: handle failure case of devm_kstrdup
iommu/amd: Fix amd_iommu=force_isolation
ARM: dts: Fix OMAP4430 SDP Ethernet startup
mips: bpf: fix encoding bug for mm_srlv32_op
media: coda: fix H.264 deblocking filter controls
ARM: dts: Fix up the D-Link DIR-685 MTD partition info
watchdog: renesas_wdt: don't set divider while watchdog is running
ARM: dts: imx51-zii-rdu1: Do not specify "power-gpio" for hpa1
usb: dwc3: gadget: Disable CSP for stream OUT ep
iommu/arm-smmu-v3: Avoid memory corruption from Hisilicon MSI payloads
iommu/arm-smmu: Add support for qcom,smmu-v2 variant
iommu/arm-smmu-v3: Use explicit mb() when moving cons pointer
sata_rcar: fix deferred probing
clk: imx6sl: ensure MMDC CH0 handshake is bypassed
platform/x86: mlx-platform: Fix tachometer registers
cpuidle: big.LITTLE: fix refcount leak
OPP: Use opp_table->regulators to verify no regulator case
tee: optee: avoid possible double list_del()
drm/msm/dsi: fix dsi clock names in DSI 10nm PLL driver
drm/msm: dpu: Only check flush register against pending flushes
lightnvm: pblk: fix resubmission of overwritten write err lbas
lightnvm: pblk: add lock protection to list operations
i2c-axxia: check for error conditions first
phy: sun4i-usb: add support for missing USB PHY index
mlxsw: spectrum_acl: Limit priority value
udf: Fix BUG on corrupted inode
switchtec: Fix SWITCHTEC_IOCTL_EVENT_IDX_ALL flags overwrite
selftests/bpf: use __bpf_constant_htons in test_prog.c
ARM: pxa: avoid section mismatch warning
ASoC: fsl: Fix SND_SOC_EUKREA_TLV320 build error on i.MX8M
KVM: PPC: Book3S: Only report KVM_CAP_SPAPR_TCE_VFIO on powernv machines
mmc: bcm2835: Recover from MMC_SEND_EXT_CSD
mmc: bcm2835: reset host on timeout
mmc: meson-mx-sdio: check devm_kasprintf for failure
memstick: Prevent memstick host from getting runtime suspended during card detection
mmc: sdhci-of-esdhc: Fix timeout checks
mmc: sdhci-omap: Fix timeout checks
mmc: sdhci-xenon: Fix timeout checks
mmc: jz4740: Get CD/WP GPIOs from descriptors
usb: renesas_usbhs: add support for RZ/G2E
btrfs: harden agaist duplicate fsid on scanned devices
serial: sh-sci: Fix locking in sci_submit_rx()
serial: sh-sci: Resume PIO in sci_rx_interrupt() on DMA failure
tty: serial: samsung: Properly set flags in autoCTS mode
perf test: Fix perf_event_attr test failure
perf dso: Fix unchecked usage of strncpy()
perf header: Fix unchecked usage of strncpy()
btrfs: use tagged writepage to mitigate livelock of snapshot
perf probe: Fix unchecked usage of strncpy()
i2c: sh_mobile: Add support for r8a774c0 (RZ/G2E)
bnxt_en: Disable MSIX before re-reserving NQs/CMPL rings.
tools/power/x86/intel_pstate_tracer: Fix non root execution for post processing a trace file
livepatch: check kzalloc return values
arm64: KVM: Skip MMIO insn after emulation
usb: musb: dsps: fix otg state machine
usb: musb: dsps: fix runtime pm for peripheral mode
perf header: Fix up argument to ctime()
perf tools: Cast off_t to s64 to avoid warning on bionic libc
percpu: convert spin_lock_irq to spin_lock_irqsave.
net: hns3: fix incomplete uninitialization of IRQ in the hns3_nic_uninit_vector_data()
drm/amd/display: Add retry to read ddc_clock pin
Bluetooth: hci_bcm: Handle deferred probing for the clock supply
drm/amd/display: fix YCbCr420 blank color
powerpc/uaccess: fix warning/error with access_ok()
mac80211: fix radiotap vendor presence bitmap handling
xfrm6_tunnel: Fix spi check in __xfrm6_tunnel_alloc_spi
mlxsw: spectrum: Properly cleanup LAG uppers when removing port from LAG
scsi: smartpqi: correct host serial num for ssa
scsi: smartpqi: correct volume status
scsi: smartpqi: increase fw status register read timeout
cw1200: Fix concurrency use-after-free bugs in cw1200_hw_scan()
net: hns3: add max vector number check for pf
powerpc/perf: Fix thresholding counter data for unknown type
iwlwifi: mvm: fix setting HE ppe FW config
powerpc/powernv/ioda: Allocate indirect TCE levels of cached userspace addresses on demand
mlx5: update timecounter at least twice per counter overflow
drbd: narrow rcu_read_lock in drbd_sync_handshake
drbd: disconnect, if the wrong UUIDs are attached on a connected peer
drbd: skip spurious timeout (ping-timeo) when failing promote
drbd: Avoid Clang warning about pointless switch statment
drm/amd/display: validate extended dongle caps
video: clps711x-fb: release disp device node in probe()
md: fix raid10 hang issue caused by barrier
fbdev: fbmem: behave better with small rotated displays and many CPUs
i40e: define proper net_device::neigh_priv_len
ice: Do not enable NAPI on q_vectors that have no rings
igb: Fix an issue that PME is not enabled during runtime suspend
ACPI/APEI: Clear GHES block_status before panic()
fbdev: fbcon: Fix unregister crash when more than one framebuffer
powerpc/mm: Fix reporting of kernel execute faults on the 8xx
pinctrl: meson: meson8: fix the GPIO function for the GPIOAO pins
pinctrl: meson: meson8b: fix the GPIO function for the GPIOAO pins
KVM: x86: svm: report MSR_IA32_MCG_EXT_CTL as unsupported
powerpc/fadump: Do not allow hot-remove memory from fadump reserved area.
kvm: Change offset in kvm_write_guest_offset_cached to unsigned
NFS: nfs_compare_mount_options always compare auth flavors.
perf build: Don't unconditionally link the libbfd feature test to -liberty and -lz
hwmon: (lm80) fix a missing check of the status of SMBus read
hwmon: (lm80) fix a missing check of bus read in lm80 probe
seq_buf: Make seq_buf_puts() null-terminate the buffer
crypto: ux500 - Use proper enum in cryp_set_dma_transfer
crypto: ux500 - Use proper enum in hash_set_dma_transfer
MIPS: ralink: Select CONFIG_CPU_MIPSR2_IRQ_VI on MT7620/8
cifs: check ntwrk_buf_start for NULL before dereferencing it
f2fs: fix use-after-free issue when accessing sbi->stat_info
um: Avoid marking pages with "changed protection"
niu: fix missing checks of niu_pci_eeprom_read
f2fs: fix sbi->extent_list corruption issue
cgroup: fix parsing empty mount option string
perf python: Do not force closing original perf descriptor in evlist.get_pollfd()
scripts/decode_stacktrace: only strip base path when a prefix of the path
arch/sh/boards/mach-kfr2r09/setup.c: fix struct mtd_oob_ops build warning
ocfs2: don't clear bh uptodate for block read
ocfs2: improve ocfs2 Makefile
mm/page_alloc.c: don't call kasan_free_pages() at deferred mem init
zram: fix lockdep warning of free block handling
isdn: hisax: hfc_pci: Fix a possible concurrency use-after-free bug in HFCPCI_l1hw()
gdrom: fix a memory leak bug
fsl/fman: Use GFP_ATOMIC in {memac,tgec}_add_hash_mac_address()
block/swim3: Fix -EBUSY error when re-opening device after unmount
thermal: bcm2835: enable hwmon explicitly
kdb: Don't back trace on a cpu that didn't round up
PCI: imx: Enable MSI from downstream components
thermal: generic-adc: Fix adc to temp interpolation
HID: lenovo: Add checks to fix of_led_classdev_register
arm64/sve: ptrace: Fix SVE_PT_REGS_OFFSET definition
kernel/hung_task.c: break RCU locks based on jiffies
proc/sysctl: fix return error for proc_doulongvec_minmax()
kernel/hung_task.c: force console verbose before panic
fs/epoll: drop ovflist branch prediction
exec: load_script: don't blindly truncate shebang string
kernel/kcov.c: mark write_comp_data() as notrace
scripts/gdb: fix lx-version string output
xfs: Fix xqmstats offsets in /proc/fs/xfs/xqmstat
xfs: cancel COW blocks before swapext
xfs: Fix error code in 'xfs_ioc_getbmap()'
xfs: fix overflow in xfs_attr3_leaf_verify
xfs: fix shared extent data corruption due to missing cow reservation
xfs: fix transient reference count error in xfs_buf_resubmit_failed_buffers
xfs: delalloc -> unwritten COW fork allocation can go wrong
fs/xfs: fix f_ffree value for statfs when project quota is set
xfs: fix PAGE_MASK usage in xfs_free_file_space
xfs: fix inverted return from xfs_btree_sblock_verify_crc
thermal: hwmon: inline helpers when CONFIG_THERMAL_HWMON is not set
dccp: fool proof ccid_hc_[rt]x_parse_options()
enic: fix checksum validation for IPv6
lib/test_rhashtable: Make test_insert_dup() allocate its hash table dynamically
net: dp83640: expire old TX-skb
net: dsa: Fix lockdep false positive splat
net: dsa: Fix NULL checking in dsa_slave_set_eee()
net: dsa: mv88e6xxx: Fix counting of ATU violations
net: dsa: slave: Don't propagate flag changes on down slave interfaces
net/mlx5e: Force CHECKSUM_UNNECESSARY for short ethernet frames
net: systemport: Fix WoL with password after deep sleep
rds: fix refcount bug in rds_sock_addref
Revert "net: phy: marvell: avoid pause mode on SGMII-to-Copper for 88e151x"
rxrpc: bad unlock balance in rxrpc_recvmsg
sctp: check and update stream->out_curr when allocating stream_out
sctp: walk the list of asoc safely
skge: potential memory corruption in skge_get_regs()
virtio_net: Account for tx bytes and packets on sending xdp_frames
net/mlx5e: FPGA, fix Innova IPsec TX offload data path performance
xfs: eof trim writeback mapping as soon as it is cached
ALSA: compress: Fix stop handling on compressed capture streams
ALSA: usb-audio: Add support for new T+A USB DAC
ALSA: hda - Serialize codec registrations
ALSA: hda/realtek - Fix lose hp_pins for disable auto mute
ALSA: hda/realtek - Use a common helper for hp pin reference
ALSA: hda/realtek - Headset microphone support for System76 darp5
fuse: call pipe_buf_release() under pipe lock
fuse: decrement NR_WRITEBACK_TEMP on the right page
fuse: handle zero sized retrieve correctly
HID: debug: fix the ring buffer implementation
dmaengine: bcm2835: Fix interrupt race on RT
dmaengine: bcm2835: Fix abort of transactions
dmaengine: imx-dma: fix wrong callback invoke
futex: Handle early deadlock return correctly
irqchip/gic-v3-its: Plug allocation race for devices sharing a DevID
usb: phy: am335x: fix race condition in _probe
usb: dwc3: gadget: Handle 0 xfer length for OUT EP
usb: gadget: udc: net2272: Fix bitwise and boolean operations
usb: gadget: musb: fix short isoc packets with inventra dma
staging: speakup: fix tty-operation NULL derefs
scsi: cxlflash: Prevent deadlock when adapter probe fails
scsi: aic94xx: fix module loading
KVM: x86: work around leak of uninitialized stack contents (CVE-2019-7222)
kvm: fix kvm_ioctl_create_device() reference counting (CVE-2019-6974)
KVM: nVMX: unconditionally cancel preemption timer in free_nested (CVE-2019-7221)
cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM
perf/x86/intel/uncore: Add Node ID mask
x86/MCE: Initialize mce.bank in the case of a fatal error in mce_no_way_out()
perf/core: Don't WARN() for impossible ring-buffer sizes
perf tests evsel-tp-sched: Fix bitwise operator
serial: fix race between flush_to_ldisc and tty_open
serial: 8250_pci: Make PCI class test non fatal
serial: sh-sci: Do not free irqs that have already been freed
cacheinfo: Keep the old value if of_property_read_u32 fails
IB/hfi1: Add limit test for RC/UC send via loopback
perf/x86/intel: Delay memory deallocation until x86_pmu_dead_cpu()
ath9k: dynack: make ewma estimation faster
ath9k: dynack: check da->enabled first in sampling routines
Linux 4.19.21
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit b284909abad48b07d3071a9fc9b5692b3e64914b upstream.
With the following commit:
73d5e2b472 ("cpu/hotplug: detect SMT disabled by BIOS")
... the hotplug code attempted to detect when SMT was disabled by BIOS,
in which case it reported SMT as permanently disabled. However, that
code broke a virt hotplug scenario, where the guest is booted with only
primary CPU threads, and a sibling is brought online later.
The problem is that there doesn't seem to be a way to reliably
distinguish between the HW "SMT disabled by BIOS" case and the virt
"sibling not yet brought online" case. So the above-mentioned commit
was a bit misguided, as it permanently disabled SMT for both cases,
preventing future virt sibling hotplugs.
Going back and reviewing the original problems which were attempted to
be solved by that commit, when SMT was disabled in BIOS:
1) /sys/devices/system/cpu/smt/control showed "on" instead of
"notsupported"; and
2) vmx_vm_init() was incorrectly showing the L1TF_MSG_SMT warning.
I'd propose that we instead consider #1 above to not actually be a
problem. Because, at least in the virt case, it's possible that SMT
wasn't disabled by BIOS and a sibling thread could be brought online
later. So it makes sense to just always default the smt control to "on"
to allow for that possibility (assuming cpuid indicates that the CPU
supports SMT).
The real problem is #2, which has a simple fix: change vmx_vm_init() to
query the actual current SMT state -- i.e., whether any siblings are
currently online -- instead of looking at the SMT "control" sysfs value.
So fix it by:
a) reverting the original "fix" and its followup fix:
73d5e2b472 ("cpu/hotplug: detect SMT disabled by BIOS")
bc2d8d262c ("cpu/hotplug: Fix SMT supported evaluation")
and
b) changing vmx_vm_init() to query the actual current SMT state --
instead of the sysfs control value -- to determine whether the L1TF
warning is needed. This also requires the 'sched_smt_present'
variable to exported, instead of 'cpu_smt_control'.
Fixes: 73d5e2b472 ("cpu/hotplug: detect SMT disabled by BIOS")
Reported-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Joe Mario <jmario@redhat.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kvm@vger.kernel.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/e3a85d585da28cc333ecbc1e78ee9216e6da9396.1548794349.git.jpoimboe@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 4.19.7 into android-4.19
Changes in 4.19.7
mm/huge_memory: rename freeze_page() to unmap_page()
mm/huge_memory: splitting set mapping+index before unfreeze
mm/huge_memory: fix lockdep complaint on 32-bit i_size_read()
mm/khugepaged: collapse_shmem() stop if punched or truncated
mm/khugepaged: fix crashes due to misaccounted holes
mm/khugepaged: collapse_shmem() remember to clear holes
mm/khugepaged: minor reorderings in collapse_shmem()
mm/khugepaged: collapse_shmem() without freezing new_page
mm/khugepaged: collapse_shmem() do not crash on Compound
lan743x: Enable driver to work with LAN7431
lan743x: fix return value for lan743x_tx_napi_poll
net: don't keep lonely packets forever in the gro hash
net: gemini: Fix copy/paste error
net: thunderx: set tso_hdrs pointer to NULL in nicvf_free_snd_queue
packet: copy user buffers before orphan or clone
rapidio/rionet: do not free skb before reading its length
s390/qeth: fix length check in SNMP processing
usbnet: ipheth: fix potential recvmsg bug and recvmsg bug 2
net: thunderx: set xdp_prog to NULL if bpf_prog_add fails
net: skb_scrub_packet(): Scrub offload_fwd_mark
virtio-net: disable guest csum during XDP set
virtio-net: fail XDP set if guest csum is negotiated
net/dim: Update DIM start sample after each DIM iteration
tcp: defer SACK compression after DupThresh
net: phy: add workaround for issue where PHY driver doesn't bind to the device
tipc: fix lockdep warning during node delete
x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
x86/speculation: Apply IBPB more strictly to avoid cross-process data leak
x86/speculation: Propagate information about RSB filling mitigation to sysfs
x86/speculation: Add RETPOLINE_AMD support to the inline asm CALL_NOSPEC variant
x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support
x86/retpoline: Remove minimal retpoline support
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
sched/smt: Make sched_smt_present track topology
x86/Kconfig: Select SCHED_SMT if SMP enabled
sched/smt: Expose sched_smt_present static key
x86/speculation: Rework SMT state change
x86/l1tf: Show actual SMT state
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()
ptrace: Remove unused ptrace_may_access_sched() and MODE_IBRS
x86/speculation: Split out TIF update
x86/speculation: Prevent stale SPEC_CTRL msr content
x86/speculation: Prepare arch_smt_update() for PRCTL mode
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
userfaultfd: shmem/hugetlbfs: only allow to register VM_MAYWRITE vmas
kvm: mmu: Fix race in emulated page table writes
kvm: svm: Ensure an IBPB on all affected CPUs when freeing a vmcb
KVM: nVMX/nSVM: Fix bug which sets vcpu->arch.tsc_offset to L1 tsc_offset
KVM: x86: Fix kernel info-leak in KVM_HC_CLOCK_PAIRING hypercall
KVM: LAPIC: Fix pv ipis use-before-initialization
KVM: X86: Fix scan ioapic use-before-initialization
KVM: VMX: re-add ple_gap module parameter
xtensa: enable coprocessors that are being flushed
xtensa: fix coprocessor context offset definitions
xtensa: fix coprocessor part of ptrace_{get,set}xregs
udf: Allow mounting volumes with incorrect identification strings
btrfs: Always try all copies when reading extent buffers
Btrfs: ensure path name is null terminated at btrfs_control_ioctl
Btrfs: fix rare chances for data loss when doing a fast fsync
Btrfs: fix race between enabling quotas and subvolume creation
btrfs: relocation: set trans to be NULL after ending transaction
PCI: layerscape: Fix wrong invocation of outbound window disable accessor
PCI: dwc: Fix MSI-X EP framework address calculation bug
PCI: Fix incorrect value returned from pcie_get_speed_cap()
arm64: dts: rockchip: Fix PCIe reset polarity for rk3399-puma-haikou.
x86/MCE/AMD: Fix the thresholding machinery initialization order
x86/fpu: Disable bottom halves while loading FPU registers
perf/x86/intel: Move branch tracing setup to the Intel-specific source file
perf/x86/intel: Add generic branch tracing check to intel_pmu_has_bts()
perf/x86/intel: Disallow precise_ip on BTS events
fs: fix lost error code in dio_complete
ALSA: wss: Fix invalid snd_free_pages() at error path
ALSA: ac97: Fix incorrect bit shift at AC97-SPSA control write
ALSA: control: Fix race between adding and removing a user element
ALSA: sparc: Fix invalid snd_free_pages() at error path
ALSA: hda: Add ASRock N68C-S UCC the power_save blacklist
ALSA: hda/realtek - Support ALC300
ALSA: hda/realtek - fix headset mic detection for MSI MS-B171
ALSA: hda/realtek - fix the pop noise on headphone for lenovo laptops
ALSA: hda/realtek - Add auto-mute quirk for HP Spectre x360 laptop
function_graph: Create function_graph_enter() to consolidate architecture code
ARM: function_graph: Simplify with function_graph_enter()
microblaze: function_graph: Simplify with function_graph_enter()
x86/function_graph: Simplify with function_graph_enter()
nds32: function_graph: Simplify with function_graph_enter()
powerpc/function_graph: Simplify with function_graph_enter()
sh/function_graph: Simplify with function_graph_enter()
sparc/function_graph: Simplify with function_graph_enter()
parisc: function_graph: Simplify with function_graph_enter()
riscv/function_graph: Simplify with function_graph_enter()
s390/function_graph: Simplify with function_graph_enter()
arm64: function_graph: Simplify with function_graph_enter()
MIPS: function_graph: Simplify with function_graph_enter()
function_graph: Make ftrace_push_return_trace() static
function_graph: Use new curr_ret_depth to manage depth instead of curr_ret_stack
function_graph: Have profiler use curr_ret_stack and not depth
function_graph: Move return callback before update of curr_ret_stack
function_graph: Reverse the order of pushing the ret_stack and the callback
binder: fix race that allows malicious free of live buffer
ext2: initialize opts.s_mount_opt as zero before using it
ext2: fix potential use after free
ASoC: intel: cht_bsw_max98090_ti: Add quirk for boards using pmc_plt_clk_0
ASoC: pcm186x: Fix device reset-registers trigger value
ARM: dts: rockchip: Remove @0 from the veyron memory node
dmaengine: at_hdmac: fix memory leak in at_dma_xlate()
dmaengine: at_hdmac: fix module unloading
staging: most: use format specifier "%s" in snprintf
staging: vchiq_arm: fix compat VCHIQ_IOC_AWAIT_COMPLETION
staging: mt7621-dma: fix potentially dereferencing uninitialized 'tx_desc'
staging: mt7621-pinctrl: fix uninitialized variable ngroups
staging: rtl8723bs: Fix incorrect sense of ether_addr_equal
staging: rtl8723bs: Add missing return for cfg80211_rtw_get_station
USB: usb-storage: Add new IDs to ums-realtek
usb: core: quirks: add RESET_RESUME quirk for Cherry G230 Stream series
Revert "usb: dwc3: gadget: skip Set/Clear Halt when invalid"
iio/hid-sensors: Fix IIO_CHAN_INFO_RAW returning wrong values for signed numbers
iio:st_magn: Fix enable device after trigger
lib/test_kmod.c: fix rmmod double free
mm: cleancache: fix corruption on missed inode invalidation
mm: use swp_offset as key in shmem_replace_page()
Drivers: hv: vmbus: check the creation_status in vmbus_establish_gpadl()
misc: mic/scif: fix copy-paste error in scif_create_remote_lookup
Linux 4.19.7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
commit a74cfffb03b73d41e08f84c2e5c87dec0ce3db9f upstream
arch_smt_update() is only called when the sysfs SMT control knob is
changed. This means that when SMT is enabled in the sysfs control knob the
system is considered to have SMT active even if all siblings are offline.
To allow finegrained control of the speculation mitigations, the actual SMT
state is more interesting than the fact that siblings could be enabled.
Rework the code, so arch_smt_update() is invoked from each individual CPU
hotplug function, and simplify the update function while at it.
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>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20181125185004.521974984@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 53c613fe6349994f023245519265999eed75957f upstream
STIBP is a feature provided by certain Intel ucodes / CPUs. This feature
(once enabled) prevents cross-hyperthread control of decisions made by
indirect branch predictors.
Enable this feature if
- the CPU is vulnerable to spectre v2
- the CPU supports SMT and has SMT siblings online
- spectre_v2 mitigation autoselection is enabled (default)
After some previous discussion, this leaves STIBP on all the time, as wrmsr
on crossing kernel boundary is a no-no. This could perhaps later be a bit
more optimized (like disabling it in NOHZ, experiment with disabling it in
idle, etc) if needed.
Note that the synchronization of the mask manipulation via newly added
spec_ctrl_mutex is currently not strictly needed, as the only updater is
already being serialized by cpu_add_remove_lock, but let's make this a
little bit more future-proof.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "WoodhouseDavid" <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: "SchauflerCasey" <casey.schaufler@intel.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/nycvar.YFH.7.76.1809251438240.15880@cbobk.fhfr.pm
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In case some sysfs nodes needs to be labeled with a different label than
sysfs then user needs to be notified when a core is brought back online.
Bug: 29359497
Bug: 120444461
Change-Id: I0395c86e01cd49c348fda8f93087d26f88557c91
Signed-off-by: Thierry Strudel <tstrudel@google.com>
This reverts commit 233b9d7df0 which is
commit 53c613fe6349994f023245519265999eed75957f upstream.
It's not ready for the stable trees as there are major slowdowns
involved with this patch.
Reported-by: Jiri Kosina <jkosina@suse.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "WoodhouseDavid" <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: "SchauflerCasey" <casey.schaufler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 53c613fe6349994f023245519265999eed75957f upstream.
STIBP is a feature provided by certain Intel ucodes / CPUs. This feature
(once enabled) prevents cross-hyperthread control of decisions made by
indirect branch predictors.
Enable this feature if
- the CPU is vulnerable to spectre v2
- the CPU supports SMT and has SMT siblings online
- spectre_v2 mitigation autoselection is enabled (default)
After some previous discussion, this leaves STIBP on all the time, as wrmsr
on crossing kernel boundary is a no-no. This could perhaps later be a bit
more optimized (like disabling it in NOHZ, experiment with disabling it in
idle, etc) if needed.
Note that the synchronization of the mask manipulation via newly added
spec_ctrl_mutex is currently not strictly needed, as the only updater is
already being serialized by cpu_add_remove_lock, but let's make this a
little bit more future-proof.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "WoodhouseDavid" <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: "SchauflerCasey" <casey.schaufler@intel.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/nycvar.YFH.7.76.1809251438240.15880@cbobk.fhfr.pm
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a teardown callback fails, the CPU hotplug code brings the CPU back to
the previous state. The previous state becomes the new target state. The
rollback happens in undo_cpu_down() which increments the state
unconditionally even if the state is already the same as the target.
As a consequence the next CPU hotplug operation will start at the wrong
state. This is easily to observe when __cpu_disable() fails.
Prevent the unconditional undo by checking the state vs. target before
incrementing state and fix up the consequently wrong conditional in the
unplug code which handles the failure of the final CPU take down on the
control CPU side.
Fixes: 4dddfb5faa ("smp/hotplug: Rewrite AP state machine core")
Reported-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Cc: josh@joshtriplett.org
Cc: peterz@infradead.org
Cc: jiangshanlai@gmail.com
Cc: dzickus@redhat.com
Cc: brendan.jackman@arm.com
Cc: malat@debian.org
Cc: sramana@codeaurora.org
Cc: linux-arm-msm@vger.kernel.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1809051419580.1416@nanos.tec.linutronix.de
----
When notifiers were there, `skip_onerr` was used to avoid calling
particular step startup/teardown callbacks in the CPU up/down rollback
path, which made the hotplug asymmetric.
As notifiers are gone now after the full state machine conversion, the
`skip_onerr` field is no longer required.
Remove it from the structure and its usage.
Signed-off-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1535439294-31426-1-git-send-email-mojha@codeaurora.org
Commit 0cc3cd2165 ("cpu/hotplug: Boot HT siblings at least once")
breaks non-SMP builds.
[ I suspect the 'bool' fields should just be made to be bitfields and be
exposed regardless of configuration, but that's a separate cleanup
that I'll leave to the owners of this file for later. - Linus ]
Fixes: 0cc3cd2165 ("cpu/hotplug: Boot HT siblings at least once")
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Abel Vesa <abelvesa@linux.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Add a new framework for CPU idle time injection (Daniel Lezcano).
- Add AVS support to the armada-37xx cpufreq driver (Gregory CLEMENT).
- Add support for current CPU frequency reporting to the ACPI CPPC
cpufreq driver (George Cherian).
- Rework the cooling device registration in the imx6q/thermal
driver (Bastian Stender).
- Make the pcc-cpufreq driver refuse to work with dynamic
scaling governors on systems with many CPUs to avoid
scalability issues with it (Rafael Wysocki).
- Fix the intel_pstate driver to report different maximum CPU
frequencies on systems where they really are different and to
ignore the turbo active ratio if hardware-managend P-states (HWP)
are in use; make it use the match_string() helper (Xie Yisheng,
Srinivas Pandruvada).
- Fix a minor deferred probe issue in the qcom-kryo cpufreq
driver (Niklas Cassel).
- Add a tracepoint for the tracking of frequency limits changes
(from Andriod) to the cpufreq core (Ruchi Kandoi).
- Fix a circular lock dependency between CPU hotplug and sysfs
locking in the cpufreq core reported by lockdep (Waiman Long).
- Avoid excessive error reports on driver registration failures
in the ARM cpuidle driver (Sudeep Holla).
- Add a new device links flag to the driver core to make links go
away automatically on supplier driver removal (Vivek Gautam).
- Eliminate potential race condition between system-wide power
management transitions and system shutdown (Pingfan Liu).
- Add a quirk to save NVS memory on system suspend for the ASUS
1025C laptop (Willy Tarreau).
- Make more systems use suspend-to-idle (instead of ACPI S3) by
default (Tristian Celestin).
- Get rid of stack VLA usage in the low-level hibernation code on
64-bit x86 (Kees Cook).
- Fix error handling in the hibernation core and mark an expected
fall-through switch in it (Chengguang Xu, Gustavo Silva).
- Extend the generic power domains (genpd) framework to support
attaching a device to a power domain by name (Ulf Hansson).
- Fix device reference counting and user limits initialization in
the devfreq core (Arvind Yadav, Matthias Kaehlcke).
- Fix a few issues in the rk3399_dmc devfreq driver and improve its
documentation (Enric Balletbo i Serra, Lin Huang, Nick Milner).
- Drop a redundant error message from the exynos-ppmu devfreq driver
(Markus Elfring).
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Merge tag 'pm-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These add a new framework for CPU idle time injection, to be used by
all of the idle injection code in the kernel in the future, fix some
issues and add a number of relatively small extensions in multiple
places.
Specifics:
- Add a new framework for CPU idle time injection (Daniel Lezcano).
- Add AVS support to the armada-37xx cpufreq driver (Gregory
CLEMENT).
- Add support for current CPU frequency reporting to the ACPI CPPC
cpufreq driver (George Cherian).
- Rework the cooling device registration in the imx6q/thermal driver
(Bastian Stender).
- Make the pcc-cpufreq driver refuse to work with dynamic scaling
governors on systems with many CPUs to avoid scalability issues
with it (Rafael Wysocki).
- Fix the intel_pstate driver to report different maximum CPU
frequencies on systems where they really are different and to
ignore the turbo active ratio if hardware-managend P-states (HWP)
are in use; make it use the match_string() helper (Xie Yisheng,
Srinivas Pandruvada).
- Fix a minor deferred probe issue in the qcom-kryo cpufreq driver
(Niklas Cassel).
- Add a tracepoint for the tracking of frequency limits changes (from
Andriod) to the cpufreq core (Ruchi Kandoi).
- Fix a circular lock dependency between CPU hotplug and sysfs
locking in the cpufreq core reported by lockdep (Waiman Long).
- Avoid excessive error reports on driver registration failures in
the ARM cpuidle driver (Sudeep Holla).
- Add a new device links flag to the driver core to make links go
away automatically on supplier driver removal (Vivek Gautam).
- Eliminate potential race condition between system-wide power
management transitions and system shutdown (Pingfan Liu).
- Add a quirk to save NVS memory on system suspend for the ASUS 1025C
laptop (Willy Tarreau).
- Make more systems use suspend-to-idle (instead of ACPI S3) by
default (Tristian Celestin).
- Get rid of stack VLA usage in the low-level hibernation code on
64-bit x86 (Kees Cook).
- Fix error handling in the hibernation core and mark an expected
fall-through switch in it (Chengguang Xu, Gustavo Silva).
- Extend the generic power domains (genpd) framework to support
attaching a device to a power domain by name (Ulf Hansson).
- Fix device reference counting and user limits initialization in the
devfreq core (Arvind Yadav, Matthias Kaehlcke).
- Fix a few issues in the rk3399_dmc devfreq driver and improve its
documentation (Enric Balletbo i Serra, Lin Huang, Nick Milner).
- Drop a redundant error message from the exynos-ppmu devfreq driver
(Markus Elfring)"
* tag 'pm-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (35 commits)
PM / reboot: Eliminate race between reboot and suspend
PM / hibernate: Mark expected switch fall-through
cpufreq: intel_pstate: Ignore turbo active ratio in HWP
cpufreq: Fix a circular lock dependency problem
cpu/hotplug: Add a cpus_read_trylock() function
x86/power/hibernate_64: Remove VLA usage
cpufreq: trace frequency limits change
cpufreq: intel_pstate: Show different max frequency with turbo 3 and HWP
cpufreq: pcc-cpufreq: Disable dynamic scaling on many-CPU systems
cpufreq: qcom-kryo: Silently error out on EPROBE_DEFER
cpufreq / CPPC: Add cpuinfo_cur_freq support for CPPC
cpufreq: armada-37xx: Add AVS support
dt-bindings: marvell: Add documentation for the Armada 3700 AVS binding
PM / devfreq: rk3399_dmc: Fix duplicated opp table on reload.
PM / devfreq: Init user limits from OPP limits, not viceversa
PM / devfreq: rk3399_dmc: fix spelling mistakes.
PM / devfreq: rk3399_dmc: do not print error when get supply and clk defer.
dt-bindings: devfreq: rk3399_dmc: move interrupts to be optional.
PM / devfreq: rk3399_dmc: remove wait for dcf irq event.
dt-bindings: clock: add rk3399 DDR3 standard speed bins.
...
Merge L1 Terminal Fault fixes from Thomas Gleixner:
"L1TF, aka L1 Terminal Fault, is yet another speculative hardware
engineering trainwreck. It's a hardware vulnerability which allows
unprivileged speculative access to data which is available in the
Level 1 Data Cache when the page table entry controlling the virtual
address, which is used for the access, has the Present bit cleared or
other reserved bits set.
If an instruction accesses a virtual address for which the relevant
page table entry (PTE) has the Present bit cleared or other reserved
bits set, then speculative execution ignores the invalid PTE and loads
the referenced data if it is present in the Level 1 Data Cache, as if
the page referenced by the address bits in the PTE was still present
and accessible.
While this is a purely speculative mechanism and the instruction will
raise a page fault when it is retired eventually, the pure act of
loading the data and making it available to other speculative
instructions opens up the opportunity for side channel attacks to
unprivileged malicious code, similar to the Meltdown attack.
While Meltdown breaks the user space to kernel space protection, L1TF
allows to attack any physical memory address in the system and the
attack works across all protection domains. It allows an attack of SGX
and also works from inside virtual machines because the speculation
bypasses the extended page table (EPT) protection mechanism.
The assoicated CVEs are: CVE-2018-3615, CVE-2018-3620, CVE-2018-3646
The mitigations provided by this pull request include:
- Host side protection by inverting the upper address bits of a non
present page table entry so the entry points to uncacheable memory.
- Hypervisor protection by flushing L1 Data Cache on VMENTER.
- SMT (HyperThreading) control knobs, which allow to 'turn off' SMT
by offlining the sibling CPU threads. The knobs are available on
the kernel command line and at runtime via sysfs
- Control knobs for the hypervisor mitigation, related to L1D flush
and SMT control. The knobs are available on the kernel command line
and at runtime via sysfs
- Extensive documentation about L1TF including various degrees of
mitigations.
Thanks to all people who have contributed to this in various ways -
patches, review, testing, backporting - and the fruitful, sometimes
heated, but at the end constructive discussions.
There is work in progress to provide other forms of mitigations, which
might be less horrible performance wise for a particular kind of
workloads, but this is not yet ready for consumption due to their
complexity and limitations"
* 'l1tf-final' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits)
x86/microcode: Allow late microcode loading with SMT disabled
tools headers: Synchronise x86 cpufeatures.h for L1TF additions
x86/mm/kmmio: Make the tracer robust against L1TF
x86/mm/pat: Make set_memory_np() L1TF safe
x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert
x86/speculation/l1tf: Invert all not present mappings
cpu/hotplug: Fix SMT supported evaluation
KVM: VMX: Tell the nested hypervisor to skip L1D flush on vmentry
x86/speculation: Use ARCH_CAPABILITIES to skip L1D flush on vmentry
x86/speculation: Simplify sysfs report of VMX L1TF vulnerability
Documentation/l1tf: Remove Yonah processors from not vulnerable list
x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr()
x86/irq: Let interrupt handlers set kvm_cpu_l1tf_flush_l1d
x86: Don't include linux/irq.h from asm/hardirq.h
x86/KVM/VMX: Introduce per-host-cpu analogue of l1tf_flush_l1d
x86/irq: Demote irq_cpustat_t::__softirq_pending to u16
x86/KVM/VMX: Move the l1tf_flush_l1d test to vmx_l1d_flush()
x86/KVM/VMX: Replace 'vmx_l1d_flush_always' with 'vmx_l1d_flush_cond'
x86/KVM/VMX: Don't set l1tf_flush_l1d to true from vmx_l1d_flush()
cpu/hotplug: detect SMT disabled by BIOS
...
Pull CPU hotplug update from Thomas Gleixner:
"A trivial name fix for the hotplug state machine"
* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/hotplug: Clarify CPU hotplug step name for timers
Pull scheduler updates from Thomas Gleixner:
- Cleanup and improvement of NUMA balancing
- Refactoring and improvements to the PELT (Per Entity Load Tracking)
code
- Watchdog simplification and related cleanups
- The usual pile of small incremental fixes and improvements
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits)
watchdog: Reduce message verbosity
stop_machine: Reflow cpu_stop_queue_two_works()
sched/numa: Move task_numa_placement() closer to numa_migrate_preferred()
sched/numa: Use group_weights to identify if migration degrades locality
sched/numa: Update the scan period without holding the numa_group lock
sched/numa: Remove numa_has_capacity()
sched/numa: Modify migrate_swap() to accept additional parameters
sched/numa: Remove unused task_capacity from 'struct numa_stats'
sched/numa: Skip nodes that are at 'hoplimit'
sched/debug: Reverse the order of printing faults
sched/numa: Use task faults only if numa_group is not yet set up
sched/numa: Set preferred_node based on best_cpu
sched/numa: Simplify load_too_imbalanced()
sched/numa: Evaluate move once per node
sched/numa: Remove redundant field
sched/debug: Show the sum wait time of a task group
sched/fair: Remove #ifdefs from scale_rt_capacity()
sched/core: Remove get_cpu() from sched_fork()
sched/cpufreq: Clarify sugov_get_util()
sched/sysctl: Remove unused sched_time_avg_ms sysctl
...
This is purely a preparatory patch for upcoming changes during the 4.19
merge window.
We have a function called "boot_cpu_state_init()" that isn't really
about the bootup cpu state: that is done much earlier by the similarly
named "boot_cpu_init()" (note lack of "state" in name).
This function initializes some hotplug CPU state, and needs to run after
the percpu data has been properly initialized. It even has a comment to
that effect.
Except it _doesn't_ actually run after the percpu data has been properly
initialized. On x86 it happens to do that, but on at least arm and
arm64, the percpu base pointers are initialized by the arch-specific
'smp_prepare_boot_cpu()' hook, which ran _after_ boot_cpu_state_init().
This had some unexpected results, and in particular we have a patch
pending for the merge window that did the obvious cleanup of using
'this_cpu_write()' in the cpu hotplug init code:
- per_cpu_ptr(&cpuhp_state, smp_processor_id())->state = CPUHP_ONLINE;
+ this_cpu_write(cpuhp_state.state, CPUHP_ONLINE);
which is obviously the right thing to do. Except because of the
ordering issue, it actually failed miserably and unexpectedly on arm64.
So this just fixes the ordering, and changes the name of the function to
be 'boot_cpu_hotplug_init()' to make it obvious that it's about cpu
hotplug state, because the core CPU state was supposed to have already
been done earlier.
Marked for stable, since the (not yet merged) patch that will show this
problem is marked for stable.
Reported-by: Vlastimil Babka <vbabka@suse.cz>
Reported-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Josh reported that the late SMT evaluation in cpu_smt_state_init() sets
cpu_smt_control to CPU_SMT_NOT_SUPPORTED in case that 'nosmt' was supplied
on the kernel command line as it cannot differentiate between SMT disabled
by BIOS and SMT soft disable via 'nosmt'. That wreckages the state and
makes the sysfs interface unusable.
Rework this so that during bringup of the non boot CPUs the availability of
SMT is determined in cpu_smt_allowed(). If a newly booted CPU is not a
'primary' thread then set the local cpu_smt_available marker and evaluate
this explicitely right after the initial SMP bringup has finished.
SMT evaulation on x86 is a trainwreck as the firmware has all the
information _before_ booting the kernel, but there is no interface to query
it.
Fixes: 73d5e2b472 ("cpu/hotplug: detect SMT disabled by BIOS")
Reported-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
After commit 249d4a9b3246 ("timers: Reinitialize per cpu bases on hotplug")
i.e. the introduction of state CPUHP_TIMERS_PREPARE instead of
CPUHP_TIMERS_DEAD the step name "timers:dead" is not longer accurate.
Rename it to "timers:prepare".
[ tglx: Massaged changelog ]
Signed-off-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: gkohli@codeaurora.org
Cc: neeraju@codeaurora.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Brendan Jackman <brendan.jackman@arm.com>
Cc: Mathieu Malaterre <malat@debian.org>
Link: https://lkml.kernel.org/r/1532443668-26810-1-git-send-email-mojha@codeaurora.org
There are use cases where it can be useful to have a cpus_read_trylock()
function to work around circular lock dependency problem involving
the cpu_hotplug_lock.
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
If SMT is disabled in BIOS, the CPU code doesn't properly detect it.
The /sys/devices/system/cpu/smt/control file shows 'on', and the 'l1tf'
vulnerabilities file shows SMT as vulnerable.
Fix it by forcing 'cpu_smt_control' to CPU_SMT_NOT_SUPPORTED in such a
case. Unfortunately the detection can only be done after bringing all
the CPUs online, so we have to overwrite any previous writes to the
variable.
Reported-by: Joe Mario <jmario@redhat.com>
Tested-by: Jiri Kosina <jkosina@suse.cz>
Fixes: f048c399e0 ("x86/topology: Provide topology_smt_supported()")
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
The CPU_SMT_NOT_SUPPORTED state is set (if the processor does not support
SMT) when the sysfs SMT control file is initialized.
That was fine so far as this was only required to make the output of the
control file correct and to prevent writes in that case.
With the upcoming l1tf command line parameter, this needs to be set up
before the L1TF mitigation selection and command line parsing happens.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20180713142323.121795971@linutronix.de
The L1TF mitigation will gain a commend line parameter which allows to set
a combination of hypervisor mitigation and SMT control.
Expose cpu_smt_disable() so the command line parser can tweak SMT settings.
[ tglx: Split out of larger patch and made it preserve an already existing
force off state ]
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20180713142323.039715135@linutronix.de
Writing 'off' to /sys/devices/system/cpu/smt/control offlines all SMT
siblings. Writing 'on' merily enables the abilify to online them, but does
not online them automatically.
Make 'on' more useful by onlining all offline siblings.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
If the L1TF CPU bug is present we allow the KVM module to be loaded as the
major of users that use Linux and KVM have trusted guests and do not want a
broken setup.
Cloud vendors are the ones that are uncomfortable with CVE 2018-3620 and as
such they are the ones that should set nosmt to one.
Setting 'nosmt' means that the system administrator also needs to disable
SMT (Hyper-threading) in the BIOS, or via the 'nosmt' command line
parameter, or via the /sys/devices/system/cpu/smt/control. See commit
05736e4ac1 ("cpu/hotplug: Provide knobs to control SMT").
Other mitigations are to use task affinity, cpu sets, interrupt binding,
etc - anything to make sure that _only_ the same guests vCPUs are running
on sibling threads.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Oleg suggested to replace the "watchdog/%u" threads with
cpu_stop_work. That removes one thread per CPU while at the same time
fixes softlockup vs SCHED_DEADLINE.
But more importantly, it does away with the single
smpboot_update_cpumask_percpu_thread() user, which allows
cleanups/shrinkage of the smpboot interface.
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Due to the way Machine Check Exceptions work on X86 hyperthreads it's
required to boot up _all_ logical cores at least once in order to set the
CR4.MCE bit.
So instead of ignoring the sibling threads right away, let them boot up
once so they can configure themselves. After they came out of the initial
boot stage check whether its a "secondary" sibling and cancel the operation
which puts the CPU back into offline state.
Reported-by: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Tony Luck <tony.luck@intel.com>
Greg Kroah-Hartman
Peter Zijlstra
Zhenzhong Duan
Saravana Kannan
Borislav Petkov
Tyler Hicks
Eiichi Tsukata
Geert Uytterhoeven
Jiri Kosina
Josh Poimboeuf
Valentin Schneider
Thomas Gleixner
Thierry Strudel
Greg Kroah-Hartman
Neeraj Upadhyay
Mukesh Ojha
Abel Vesa
Linus Torvalds
Waiman Long
Konrad Rzeszutek Wilk