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Merge 5.10.120 into android12-5.10-lts
Changes in 5.10.120
pinctrl: sunxi: fix f1c100s uart2 function
percpu_ref_init(): clean ->percpu_count_ref on failure
net: af_key: check encryption module availability consistency
nfc: pn533: Fix buggy cleanup order
net: ftgmac100: Disable hardware checksum on AST2600
i2c: ismt: Provide a DMA buffer for Interrupt Cause Logging
drivers: i2c: thunderx: Allow driver to work with ACPI defined TWSI controllers
netfilter: nf_tables: disallow non-stateful expression in sets earlier
pipe: make poll_usage boolean and annotate its access
pipe: Fix missing lock in pipe_resize_ring()
cfg80211: set custom regdomain after wiphy registration
assoc_array: Fix BUG_ON during garbage collect
io_uring: don't re-import iovecs from callbacks
io_uring: fix using under-expanded iters
net: ipa: compute proper aggregation limit
xfs: detect overflows in bmbt records
xfs: show the proper user quota options
xfs: fix the forward progress assertion in xfs_iwalk_run_callbacks
xfs: fix an ABBA deadlock in xfs_rename
xfs: Fix CIL throttle hang when CIL space used going backwards
drm/i915: Fix -Wstringop-overflow warning in call to intel_read_wm_latency()
exfat: check if cluster num is valid
lib/crypto: add prompts back to crypto libraries
crypto: drbg - prepare for more fine-grained tracking of seeding state
crypto: drbg - track whether DRBG was seeded with !rng_is_initialized()
crypto: drbg - move dynamic ->reseed_threshold adjustments to __drbg_seed()
crypto: drbg - make reseeding from get_random_bytes() synchronous
netfilter: nf_tables: sanitize nft_set_desc_concat_parse()
netfilter: conntrack: re-fetch conntrack after insertion
KVM: PPC: Book3S HV: fix incorrect NULL check on list iterator
x86/kvm: Alloc dummy async #PF token outside of raw spinlock
x86, kvm: use correct GFP flags for preemption disabled
KVM: x86: avoid calling x86 emulator without a decoded instruction
crypto: caam - fix i.MX6SX entropy delay value
crypto: ecrdsa - Fix incorrect use of vli_cmp
zsmalloc: fix races between asynchronous zspage free and page migration
Bluetooth: hci_qca: Use del_timer_sync() before freeing
ARM: dts: s5pv210: Correct interrupt name for bluetooth in Aries
dm integrity: fix error code in dm_integrity_ctr()
dm crypt: make printing of the key constant-time
dm stats: add cond_resched when looping over entries
dm verity: set DM_TARGET_IMMUTABLE feature flag
raid5: introduce MD_BROKEN
HID: multitouch: Add support for Google Whiskers Touchpad
HID: multitouch: add quirks to enable Lenovo X12 trackpoint
tpm: Fix buffer access in tpm2_get_tpm_pt()
tpm: ibmvtpm: Correct the return value in tpm_ibmvtpm_probe()
docs: submitting-patches: Fix crossref to 'The canonical patch format'
NFS: Memory allocation failures are not server fatal errors
NFSD: Fix possible sleep during nfsd4_release_lockowner()
bpf: Fix potential array overflow in bpf_trampoline_get_progs()
bpf: Enlarge offset check value to INT_MAX in bpf_skb_{load,store}_bytes
Linux 5.10.120
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I48c0d649a50bd16ad719b2cb9f0ffccd0a74519a
commit 2505a981114dcb715f8977b8433f7540854851d8 upstream.
The asynchronous zspage free worker tries to lock a zspage's entire page
list without defending against page migration. Since pages which haven't
yet been locked can concurrently migrate off the zspage page list while
lock_zspage() churns away, lock_zspage() can suffer from a few different
lethal races.
It can lock a page which no longer belongs to the zspage and unsafely
dereference page_private(), it can unsafely dereference a torn pointer to
the next page (since there's a data race), and it can observe a spurious
NULL pointer to the next page and thus not lock all of the zspage's pages
(since a single page migration will reconstruct the entire page list, and
create_page_chain() unconditionally zeroes out each list pointer in the
process).
Fix the races by using migrate_read_lock() in lock_zspage() to synchronize
with page migration.
Link: https://lkml.kernel.org/r/20220509024703.243847-1-sultan@kerneltoast.com
Fixes: 77ff465799 ("zsmalloc: zs_page_migrate: skip unnecessary loops but not return -EBUSY if zspage is not inuse")
Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 5.10.80 into android12-5.10-lts
Changes in 5.10.80
xhci: Fix USB 3.1 enumeration issues by increasing roothub power-on-good delay
usb: xhci: Enable runtime-pm by default on AMD Yellow Carp platform
binder: use euid from cred instead of using task
binder: use cred instead of task for selinux checks
binder: use cred instead of task for getsecid
Input: iforce - fix control-message timeout
Input: elantench - fix misreporting trackpoint coordinates
Input: i8042 - Add quirk for Fujitsu Lifebook T725
libata: fix read log timeout value
ocfs2: fix data corruption on truncate
scsi: core: Remove command size deduction from scsi_setup_scsi_cmnd()
scsi: qla2xxx: Fix kernel crash when accessing port_speed sysfs file
scsi: qla2xxx: Fix use after free in eh_abort path
mmc: mtk-sd: Add wait dma stop done flow
mmc: dw_mmc: Dont wait for DRTO on Write RSP error
exfat: fix incorrect loading of i_blocks for large files
parisc: Fix set_fixmap() on PA1.x CPUs
parisc: Fix ptrace check on syscall return
tpm: Check for integer overflow in tpm2_map_response_body()
firmware/psci: fix application of sizeof to pointer
crypto: s5p-sss - Add error handling in s5p_aes_probe()
media: rkvdec: Do not override sizeimage for output format
media: ite-cir: IR receiver stop working after receive overflow
media: rkvdec: Support dynamic resolution changes
media: ir-kbd-i2c: improve responsiveness of hauppauge zilog receivers
media: v4l2-ioctl: Fix check_ext_ctrls
ALSA: hda/realtek: Fix mic mute LED for the HP Spectre x360 14
ALSA: hda/realtek: Add a quirk for HP OMEN 15 mute LED
ALSA: hda/realtek: Add quirk for Clevo PC70HS
ALSA: hda/realtek: Headset fixup for Clevo NH77HJQ
ALSA: hda/realtek: Add a quirk for Acer Spin SP513-54N
ALSA: hda/realtek: Add quirk for ASUS UX550VE
ALSA: hda/realtek: Add quirk for HP EliteBook 840 G7 mute LED
ALSA: ua101: fix division by zero at probe
ALSA: 6fire: fix control and bulk message timeouts
ALSA: line6: fix control and interrupt message timeouts
ALSA: usb-audio: Line6 HX-Stomp XL USB_ID for 48k-fixed quirk
ALSA: usb-audio: Add registration quirk for JBL Quantum 400
ALSA: hda: Free card instance properly at probe errors
ALSA: synth: missing check for possible NULL after the call to kstrdup
ALSA: timer: Fix use-after-free problem
ALSA: timer: Unconditionally unlink slave instances, too
ext4: fix lazy initialization next schedule time computation in more granular unit
ext4: ensure enough credits in ext4_ext_shift_path_extents
ext4: refresh the ext4_ext_path struct after dropping i_data_sem.
fuse: fix page stealing
x86/sme: Use #define USE_EARLY_PGTABLE_L5 in mem_encrypt_identity.c
x86/cpu: Fix migration safety with X86_BUG_NULL_SEL
x86/irq: Ensure PI wakeup handler is unregistered before module unload
ASoC: soc-core: fix null-ptr-deref in snd_soc_del_component_unlocked()
ALSA: hda/realtek: Fixes HP Spectre x360 15-eb1xxx speakers
cavium: Return negative value when pci_alloc_irq_vectors() fails
scsi: qla2xxx: Return -ENOMEM if kzalloc() fails
scsi: qla2xxx: Fix unmap of already freed sgl
mISDN: Fix return values of the probe function
cavium: Fix return values of the probe function
sfc: Export fibre-specific supported link modes
sfc: Don't use netif_info before net_device setup
hyperv/vmbus: include linux/bitops.h
ARM: dts: sun7i: A20-olinuxino-lime2: Fix ethernet phy-mode
reset: socfpga: add empty driver allowing consumers to probe
mmc: winbond: don't build on M68K
drm: panel-orientation-quirks: Add quirk for Aya Neo 2021
fcnal-test: kill hanging ping/nettest binaries on cleanup
bpf: Define bpf_jit_alloc_exec_limit for arm64 JIT
bpf: Prevent increasing bpf_jit_limit above max
gpio: mlxbf2.c: Add check for bgpio_init failure
xen/netfront: stop tx queues during live migration
nvmet-tcp: fix a memory leak when releasing a queue
spi: spl022: fix Microwire full duplex mode
net: multicast: calculate csum of looped-back and forwarded packets
watchdog: Fix OMAP watchdog early handling
drm: panel-orientation-quirks: Add quirk for GPD Win3
block: schedule queue restart after BLK_STS_ZONE_RESOURCE
nvmet-tcp: fix header digest verification
r8169: Add device 10ec:8162 to driver r8169
vmxnet3: do not stop tx queues after netif_device_detach()
nfp: bpf: relax prog rejection for mtu check through max_pkt_offset
net/smc: Fix smc_link->llc_testlink_time overflow
net/smc: Correct spelling mistake to TCPF_SYN_RECV
rds: stop using dmapool
btrfs: clear MISSING device status bit in btrfs_close_one_device
btrfs: fix lost error handling when replaying directory deletes
btrfs: call btrfs_check_rw_degradable only if there is a missing device
KVM: VMX: Unregister posted interrupt wakeup handler on hardware unsetup
ia64: kprobes: Fix to pass correct trampoline address to the handler
selinux: fix race condition when computing ocontext SIDs
hwmon: (pmbus/lm25066) Add offset coefficients
regulator: s5m8767: do not use reset value as DVS voltage if GPIO DVS is disabled
regulator: dt-bindings: samsung,s5m8767: correct s5m8767,pmic-buck-default-dvs-idx property
EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell
mwifiex: fix division by zero in fw download path
ath6kl: fix division by zero in send path
ath6kl: fix control-message timeout
ath10k: fix control-message timeout
ath10k: fix division by zero in send path
PCI: Mark Atheros QCA6174 to avoid bus reset
rtl8187: fix control-message timeouts
evm: mark evm_fixmode as __ro_after_init
ifb: Depend on netfilter alternatively to tc
wcn36xx: Fix HT40 capability for 2Ghz band
wcn36xx: Fix tx_status mechanism
wcn36xx: Fix (QoS) null data frame bitrate/modulation
PM: sleep: Do not let "syscore" devices runtime-suspend during system transitions
mwifiex: Read a PCI register after writing the TX ring write pointer
mwifiex: Try waking the firmware until we get an interrupt
libata: fix checking of DMA state
wcn36xx: handle connection loss indication
rsi: fix occasional initialisation failure with BT coex
rsi: fix key enabled check causing unwanted encryption for vap_id > 0
rsi: fix rate mask set leading to P2P failure
rsi: Fix module dev_oper_mode parameter description
perf/x86/intel/uncore: Support extra IMC channel on Ice Lake server
perf/x86/intel/uncore: Fix Intel ICX IIO event constraints
RDMA/qedr: Fix NULL deref for query_qp on the GSI QP
signal: Remove the bogus sigkill_pending in ptrace_stop
memory: renesas-rpc-if: Correct QSPI data transfer in Manual mode
signal/mips: Update (_save|_restore)_fp_context to fail with -EFAULT
soc: fsl: dpio: replace smp_processor_id with raw_smp_processor_id
soc: fsl: dpio: use the combined functions to protect critical zone
mtd: rawnand: socrates: Keep the driver compatible with on-die ECC engines
power: supply: max17042_battery: Prevent int underflow in set_soc_threshold
power: supply: max17042_battery: use VFSOC for capacity when no rsns
KVM: arm64: Extract ESR_ELx.EC only
KVM: nVMX: Query current VMCS when determining if MSR bitmaps are in use
can: j1939: j1939_tp_cmd_recv(): ignore abort message in the BAM transport
can: j1939: j1939_can_recv(): ignore messages with invalid source address
powerpc/85xx: Fix oops when mpc85xx_smp_guts_ids node cannot be found
ring-buffer: Protect ring_buffer_reset() from reentrancy
serial: core: Fix initializing and restoring termios speed
ifb: fix building without CONFIG_NET_CLS_ACT
ALSA: mixer: oss: Fix racy access to slots
ALSA: mixer: fix deadlock in snd_mixer_oss_set_volume
xen/balloon: add late_initcall_sync() for initial ballooning done
ovl: fix use after free in struct ovl_aio_req
PCI: pci-bridge-emul: Fix emulation of W1C bits
PCI: cadence: Add cdns_plat_pcie_probe() missing return
PCI: aardvark: Do not clear status bits of masked interrupts
PCI: aardvark: Fix checking for link up via LTSSM state
PCI: aardvark: Do not unmask unused interrupts
PCI: aardvark: Fix reporting Data Link Layer Link Active
PCI: aardvark: Fix configuring Reference clock
PCI: aardvark: Fix return value of MSI domain .alloc() method
PCI: aardvark: Read all 16-bits from PCIE_MSI_PAYLOAD_REG
PCI: aardvark: Fix support for bus mastering and PCI_COMMAND on emulated bridge
PCI: aardvark: Fix support for PCI_BRIDGE_CTL_BUS_RESET on emulated bridge
PCI: aardvark: Set PCI Bridge Class Code to PCI Bridge
PCI: aardvark: Fix support for PCI_ROM_ADDRESS1 on emulated bridge
quota: check block number when reading the block in quota file
quota: correct error number in free_dqentry()
pinctrl: core: fix possible memory leak in pinctrl_enable()
coresight: cti: Correct the parameter for pm_runtime_put
iio: dac: ad5446: Fix ad5622_write() return value
iio: ad5770r: make devicetree property reading consistent
USB: serial: keyspan: fix memleak on probe errors
serial: 8250: fix racy uartclk update
most: fix control-message timeouts
USB: iowarrior: fix control-message timeouts
USB: chipidea: fix interrupt deadlock
power: supply: max17042_battery: Clear status bits in interrupt handler
dma-buf: WARN on dmabuf release with pending attachments
drm: panel-orientation-quirks: Update the Lenovo Ideapad D330 quirk (v2)
drm: panel-orientation-quirks: Add quirk for KD Kurio Smart C15200 2-in-1
drm: panel-orientation-quirks: Add quirk for the Samsung Galaxy Book 10.6
Bluetooth: sco: Fix lock_sock() blockage by memcpy_from_msg()
Bluetooth: fix use-after-free error in lock_sock_nested()
drm/panel-orientation-quirks: add Valve Steam Deck
rcutorture: Avoid problematic critical section nesting on PREEMPT_RT
platform/x86: wmi: do not fail if disabling fails
MIPS: lantiq: dma: add small delay after reset
MIPS: lantiq: dma: reset correct number of channel
locking/lockdep: Avoid RCU-induced noinstr fail
net: sched: update default qdisc visibility after Tx queue cnt changes
rcu-tasks: Move RTGS_WAIT_CBS to beginning of rcu_tasks_kthread() loop
smackfs: Fix use-after-free in netlbl_catmap_walk()
ath11k: Align bss_chan_info structure with firmware
x86: Increase exception stack sizes
mwifiex: Run SET_BSS_MODE when changing from P2P to STATION vif-type
mwifiex: Properly initialize private structure on interface type changes
fscrypt: allow 256-bit master keys with AES-256-XTS
drm/amdgpu: Fix MMIO access page fault
ath11k: Avoid reg rules update during firmware recovery
ath11k: add handler for scan event WMI_SCAN_EVENT_DEQUEUED
ath11k: Change DMA_FROM_DEVICE to DMA_TO_DEVICE when map reinjected packets
ath10k: high latency fixes for beacon buffer
media: mt9p031: Fix corrupted frame after restarting stream
media: netup_unidvb: handle interrupt properly according to the firmware
media: atomisp: Fix error handling in probe
media: stm32: Potential NULL pointer dereference in dcmi_irq_thread()
media: uvcvideo: Set capability in s_param
media: uvcvideo: Return -EIO for control errors
media: uvcvideo: Set unique vdev name based in type
media: s5p-mfc: fix possible null-pointer dereference in s5p_mfc_probe()
media: s5p-mfc: Add checking to s5p_mfc_probe().
media: imx: set a media_device bus_info string
media: mceusb: return without resubmitting URB in case of -EPROTO error.
ia64: don't do IA64_CMPXCHG_DEBUG without CONFIG_PRINTK
rtw88: fix RX clock gate setting while fifo dump
brcmfmac: Add DMI nvram filename quirk for Cyberbook T116 tablet
media: rcar-csi2: Add checking to rcsi2_start_receiver()
ipmi: Disable some operations during a panic
fs/proc/uptime.c: Fix idle time reporting in /proc/uptime
ACPICA: Avoid evaluating methods too early during system resume
media: ipu3-imgu: imgu_fmt: Handle properly try
media: ipu3-imgu: VIDIOC_QUERYCAP: Fix bus_info
media: usb: dvd-usb: fix uninit-value bug in dibusb_read_eeprom_byte()
net-sysfs: try not to restart the syscall if it will fail eventually
tracefs: Have tracefs directories not set OTH permission bits by default
ath: dfs_pattern_detector: Fix possible null-pointer dereference in channel_detector_create()
mmc: moxart: Fix reference count leaks in moxart_probe
iov_iter: Fix iov_iter_get_pages{,_alloc} page fault return value
ACPI: battery: Accept charges over the design capacity as full
drm/amdkfd: fix resume error when iommu disabled in Picasso
net: phy: micrel: make *-skew-ps check more lenient
leaking_addresses: Always print a trailing newline
drm/msm: prevent NULL dereference in msm_gpu_crashstate_capture()
block: bump max plugged deferred size from 16 to 32
md: update superblock after changing rdev flags in state_store
memstick: r592: Fix a UAF bug when removing the driver
lib/xz: Avoid overlapping memcpy() with invalid input with in-place decompression
lib/xz: Validate the value before assigning it to an enum variable
workqueue: make sysfs of unbound kworker cpumask more clever
tracing/cfi: Fix cmp_entries_* functions signature mismatch
mt76: mt7915: fix an off-by-one bound check
mwl8k: Fix use-after-free in mwl8k_fw_state_machine()
block: remove inaccurate requeue check
media: allegro: ignore interrupt if mailbox is not initialized
nvmet: fix use-after-free when a port is removed
nvmet-rdma: fix use-after-free when a port is removed
nvmet-tcp: fix use-after-free when a port is removed
nvme: drop scan_lock and always kick requeue list when removing namespaces
PM: hibernate: Get block device exclusively in swsusp_check()
selftests: kvm: fix mismatched fclose() after popen()
selftests/bpf: Fix perf_buffer test on system with offline cpus
iwlwifi: mvm: disable RX-diversity in powersave
smackfs: use __GFP_NOFAIL for smk_cipso_doi()
ARM: clang: Do not rely on lr register for stacktrace
gre/sit: Don't generate link-local addr if addr_gen_mode is IN6_ADDR_GEN_MODE_NONE
gfs2: Cancel remote delete work asynchronously
gfs2: Fix glock_hash_walk bugs
ARM: 9136/1: ARMv7-M uses BE-8, not BE-32
vrf: run conntrack only in context of lower/physdev for locally generated packets
net: annotate data-race in neigh_output()
ACPI: AC: Quirk GK45 to skip reading _PSR
btrfs: reflink: initialize return value to 0 in btrfs_extent_same()
btrfs: do not take the uuid_mutex in btrfs_rm_device
spi: bcm-qspi: Fix missing clk_disable_unprepare() on error in bcm_qspi_probe()
wcn36xx: Correct band/freq reporting on RX
x86/hyperv: Protect set_hv_tscchange_cb() against getting preempted
drm/amd/display: dcn20_resource_construct reduce scope of FPU enabled
selftests/core: fix conflicting types compile error for close_range()
parisc: fix warning in flush_tlb_all
task_stack: Fix end_of_stack() for architectures with upwards-growing stack
erofs: don't trigger WARN() when decompression fails
parisc/unwind: fix unwinder when CONFIG_64BIT is enabled
parisc/kgdb: add kgdb_roundup() to make kgdb work with idle polling
netfilter: conntrack: set on IPS_ASSURED if flows enters internal stream state
selftests/bpf: Fix strobemeta selftest regression
Bluetooth: fix init and cleanup of sco_conn.timeout_work
rcu: Fix existing exp request check in sync_sched_exp_online_cleanup()
MIPS: lantiq: dma: fix burst length for DEU
objtool: Add xen_start_kernel() to noreturn list
x86/xen: Mark cpu_bringup_and_idle() as dead_end_function
objtool: Fix static_call list generation
drm/v3d: fix wait for TMU write combiner flush
virtio-gpu: fix possible memory allocation failure
lockdep: Let lock_is_held_type() detect recursive read as read
net: net_namespace: Fix undefined member in key_remove_domain()
cgroup: Make rebind_subsystems() disable v2 controllers all at once
wcn36xx: Fix Antenna Diversity Switching
wilc1000: fix possible memory leak in cfg_scan_result()
Bluetooth: btmtkuart: fix a memleak in mtk_hci_wmt_sync
crypto: caam - disable pkc for non-E SoCs
rxrpc: Fix _usecs_to_jiffies() by using usecs_to_jiffies()
net: dsa: rtl8366rb: Fix off-by-one bug
ath11k: fix some sleeping in atomic bugs
ath11k: Avoid race during regd updates
ath11k: fix packet drops due to incorrect 6 GHz freq value in rx status
ath11k: Fix memory leak in ath11k_qmi_driver_event_work
ath10k: Fix missing frame timestamp for beacon/probe-resp
ath10k: sdio: Add missing BH locking around napi_schdule()
drm/ttm: stop calling tt_swapin in vm_access
arm64: mm: update max_pfn after memory hotplug
drm/amdgpu: fix warning for overflow check
media: em28xx: add missing em28xx_close_extension
media: cxd2880-spi: Fix a null pointer dereference on error handling path
media: dvb-usb: fix ununit-value in az6027_rc_query
media: v4l2-ioctl: S_CTRL output the right value
media: TDA1997x: handle short reads of hdmi info frame.
media: mtk-vpu: Fix a resource leak in the error handling path of 'mtk_vpu_probe()'
media: radio-wl1273: Avoid card name truncation
media: si470x: Avoid card name truncation
media: tm6000: Avoid card name truncation
media: cx23885: Fix snd_card_free call on null card pointer
kprobes: Do not use local variable when creating debugfs file
crypto: ecc - fix CRYPTO_DEFAULT_RNG dependency
cpuidle: Fix kobject memory leaks in error paths
media: em28xx: Don't use ops->suspend if it is NULL
ath9k: Fix potential interrupt storm on queue reset
PM: EM: Fix inefficient states detection
EDAC/amd64: Handle three rank interleaving mode
rcu: Always inline rcu_dynticks_task*_{enter,exit}()
netfilter: nft_dynset: relax superfluous check on set updates
media: dvb-frontends: mn88443x: Handle errors of clk_prepare_enable()
crypto: qat - detect PFVF collision after ACK
crypto: qat - disregard spurious PFVF interrupts
hwrng: mtk - Force runtime pm ops for sleep ops
b43legacy: fix a lower bounds test
b43: fix a lower bounds test
gve: Recover from queue stall due to missed IRQ
mmc: sdhci-omap: Fix NULL pointer exception if regulator is not configured
mmc: sdhci-omap: Fix context restore
memstick: avoid out-of-range warning
memstick: jmb38x_ms: use appropriate free function in jmb38x_ms_alloc_host()
net, neigh: Fix NTF_EXT_LEARNED in combination with NTF_USE
hwmon: Fix possible memleak in __hwmon_device_register()
hwmon: (pmbus/lm25066) Let compiler determine outer dimension of lm25066_coeff
ath10k: fix max antenna gain unit
kernel/sched: Fix sched_fork() access an invalid sched_task_group
tcp: switch orphan_count to bare per-cpu counters
drm/msm: potential error pointer dereference in init()
drm/msm: uninitialized variable in msm_gem_import()
net: stream: don't purge sk_error_queue in sk_stream_kill_queues()
media: ir_toy: assignment to be16 should be of correct type
mmc: mxs-mmc: disable regulator on error and in the remove function
platform/x86: thinkpad_acpi: Fix bitwise vs. logical warning
mt76: mt7615: fix endianness warning in mt7615_mac_write_txwi
mt76: mt76x02: fix endianness warnings in mt76x02_mac.c
mt76: mt7915: fix possible infinite loop release semaphore
mt76: mt7915: fix sta_rec_wtbl tag len
mt76: mt7915: fix muar_idx in mt7915_mcu_alloc_sta_req()
rsi: stop thread firstly in rsi_91x_init() error handling
mwifiex: Send DELBA requests according to spec
net: enetc: unmap DMA in enetc_send_cmd()
phy: micrel: ksz8041nl: do not use power down mode
nvme-rdma: fix error code in nvme_rdma_setup_ctrl
PM: hibernate: fix sparse warnings
clocksource/drivers/timer-ti-dm: Select TIMER_OF
x86/sev: Fix stack type check in vc_switch_off_ist()
drm/msm: Fix potential NULL dereference in DPU SSPP
smackfs: use netlbl_cfg_cipsov4_del() for deleting cipso_v4_doi
KVM: selftests: Add operand to vmsave/vmload/vmrun in svm.c
KVM: selftests: Fix nested SVM tests when built with clang
bpftool: Avoid leaking the JSON writer prepared for program metadata
libbpf: Fix BTF data layout checks and allow empty BTF
libbpf: Allow loading empty BTFs
libbpf: Fix overflow in BTF sanity checks
libbpf: Fix BTF header parsing checks
s390/gmap: don't unconditionally call pte_unmap_unlock() in __gmap_zap()
KVM: s390: pv: avoid double free of sida page
KVM: s390: pv: avoid stalls for kvm_s390_pv_init_vm
irq: mips: avoid nested irq_enter()
tpm: fix Atmel TPM crash caused by too frequent queries
tpm_tis_spi: Add missing SPI ID
libbpf: Fix endianness detection in BPF_CORE_READ_BITFIELD_PROBED()
tcp: don't free a FIN sk_buff in tcp_remove_empty_skb()
spi: spi-rpc-if: Check return value of rpcif_sw_init()
samples/kretprobes: Fix return value if register_kretprobe() failed
KVM: s390: Fix handle_sske page fault handling
libertas_tf: Fix possible memory leak in probe and disconnect
libertas: Fix possible memory leak in probe and disconnect
wcn36xx: add proper DMA memory barriers in rx path
wcn36xx: Fix discarded frames due to wrong sequence number
drm/amdgpu/gmc6: fix DMA mask from 44 to 40 bits
selftests: bpf: Convert sk_lookup ctx access tests to PROG_TEST_RUN
selftests/bpf: Fix fd cleanup in sk_lookup test
net: amd-xgbe: Toggle PLL settings during rate change
net: phylink: avoid mvneta warning when setting pause parameters
crypto: pcrypt - Delay write to padata->info
selftests/bpf: Fix fclose/pclose mismatch in test_progs
udp6: allow SO_MARK ctrl msg to affect routing
ibmvnic: don't stop queue in xmit
ibmvnic: Process crqs after enabling interrupts
cgroup: Fix rootcg cpu.stat guest double counting
bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off.
bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
of: unittest: fix EXPECT text for gpio hog errors
iio: st_sensors: Call st_sensors_power_enable() from bus drivers
iio: st_sensors: disable regulators after device unregistration
RDMA/rxe: Fix wrong port_cap_flags
ARM: dts: BCM5301X: Fix memory nodes names
clk: mvebu: ap-cpu-clk: Fix a memory leak in error handling paths
ARM: s3c: irq-s3c24xx: Fix return value check for s3c24xx_init_intc()
arm64: dts: rockchip: Fix GPU register width for RK3328
ARM: dts: qcom: msm8974: Add xo_board reference clock to DSI0 PHY
RDMA/bnxt_re: Fix query SRQ failure
arm64: dts: ti: k3-j721e-main: Fix "max-virtual-functions" in PCIe EP nodes
arm64: dts: ti: k3-j721e-main: Fix "bus-range" upto 256 bus number for PCIe
arm64: dts: meson-g12a: Fix the pwm regulator supply properties
arm64: dts: meson-g12b: Fix the pwm regulator supply properties
bus: ti-sysc: Fix timekeeping_suspended warning on resume
ARM: dts: at91: tse850: the emac<->phy interface is rmii
scsi: dc395: Fix error case unwinding
MIPS: loongson64: make CPU_LOONGSON64 depends on MIPS_FP_SUPPORT
JFS: fix memleak in jfs_mount
arm64: dts: qcom: msm8916: Fix Secondary MI2S bit clock
arm64: dts: renesas: beacon: Fix Ethernet PHY mode
arm64: dts: qcom: pm8916: Remove wrong reg-names for rtc@6000
ALSA: hda: Reduce udelay() at SKL+ position reporting
ALSA: hda: Release controller display power during shutdown/reboot
ALSA: hda: Fix hang during shutdown due to link reset
ALSA: hda: Use position buffer for SKL+ again
soundwire: debugfs: use controller id and link_id for debugfs
scsi: pm80xx: Fix misleading log statement in pm8001_mpi_get_nvmd_resp()
driver core: Fix possible memory leak in device_link_add()
arm: dts: omap3-gta04a4: accelerometer irq fix
ASoC: SOF: topology: do not power down primary core during topology removal
soc/tegra: Fix an error handling path in tegra_powergate_power_up()
memory: fsl_ifc: fix leak of irq and nand_irq in fsl_ifc_ctrl_probe
clk: at91: check pmc node status before registering syscore ops
video: fbdev: chipsfb: use memset_io() instead of memset()
powerpc: Refactor is_kvm_guest() declaration to new header
powerpc: Rename is_kvm_guest() to check_kvm_guest()
powerpc: Reintroduce is_kvm_guest() as a fast-path check
powerpc: Fix is_kvm_guest() / kvm_para_available()
powerpc: fix unbalanced node refcount in check_kvm_guest()
serial: 8250_dw: Drop wrong use of ACPI_PTR()
usb: gadget: hid: fix error code in do_config()
power: supply: rt5033_battery: Change voltage values to µV
power: supply: max17040: fix null-ptr-deref in max17040_probe()
scsi: csiostor: Uninitialized data in csio_ln_vnp_read_cbfn()
RDMA/mlx4: Return missed an error if device doesn't support steering
usb: musb: select GENERIC_PHY instead of depending on it
staging: most: dim2: do not double-register the same device
staging: ks7010: select CRYPTO_HASH/CRYPTO_MICHAEL_MIC
pinctrl: renesas: checker: Fix off-by-one bug in drive register check
ARM: dts: stm32: Reduce DHCOR SPI NOR frequency to 50 MHz
ARM: dts: stm32: fix SAI sub nodes register range
ARM: dts: stm32: fix AV96 board SAI2 pin muxing on stm32mp15
ASoC: cs42l42: Correct some register default values
ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER
soc: qcom: rpmhpd: Provide some missing struct member descriptions
soc: qcom: rpmhpd: Make power_on actually enable the domain
usb: typec: STUSB160X should select REGMAP_I2C
iio: adis: do not disabe IRQs in 'adis_init()'
scsi: ufs: Refactor ufshcd_setup_clocks() to remove skip_ref_clk
scsi: ufs: ufshcd-pltfrm: Fix memory leak due to probe defer
serial: imx: fix detach/attach of serial console
usb: dwc2: drd: fix dwc2_force_mode call in dwc2_ovr_init
usb: dwc2: drd: fix dwc2_drd_role_sw_set when clock could be disabled
usb: dwc2: drd: reset current session before setting the new one
firmware: qcom_scm: Fix error retval in __qcom_scm_is_call_available()
soc: qcom: apr: Add of_node_put() before return
pinctrl: equilibrium: Fix function addition in multiple groups
phy: qcom-qusb2: Fix a memory leak on probe
phy: ti: gmii-sel: check of_get_address() for failure
phy: qcom-snps: Correct the FSEL_MASK
serial: xilinx_uartps: Fix race condition causing stuck TX
clk: at91: sam9x60-pll: use DIV_ROUND_CLOSEST_ULL
HID: u2fzero: clarify error check and length calculations
HID: u2fzero: properly handle timeouts in usb_submit_urb
powerpc/44x/fsp2: add missing of_node_put
ASoC: cs42l42: Disable regulators if probe fails
ASoC: cs42l42: Use device_property API instead of of_property
ASoC: cs42l42: Correct configuring of switch inversion from ts-inv
virtio_ring: check desc == NULL when using indirect with packed
mips: cm: Convert to bitfield API to fix out-of-bounds access
power: supply: bq27xxx: Fix kernel crash on IRQ handler register error
apparmor: fix error check
rpmsg: Fix rpmsg_create_ept return when RPMSG config is not defined
nfsd: don't alloc under spinlock in rpc_parse_scope_id
i2c: mediatek: fixing the incorrect register offset
NFS: Fix dentry verifier races
pnfs/flexfiles: Fix misplaced barrier in nfs4_ff_layout_prepare_ds
drm/plane-helper: fix uninitialized variable reference
PCI: aardvark: Don't spam about PIO Response Status
PCI: aardvark: Fix preserving PCI_EXP_RTCTL_CRSSVE flag on emulated bridge
opp: Fix return in _opp_add_static_v2()
NFS: Fix deadlocks in nfs_scan_commit_list()
fs: orangefs: fix error return code of orangefs_revalidate_lookup()
mtd: spi-nor: hisi-sfc: Remove excessive clk_disable_unprepare()
PCI: uniphier: Serialize INTx masking/unmasking and fix the bit operation
mtd: core: don't remove debugfs directory if device is in use
remoteproc: Fix a memory leak in an error handling path in 'rproc_handle_vdev()'
rtc: rv3032: fix error handling in rv3032_clkout_set_rate()
dmaengine: at_xdmac: fix AT_XDMAC_CC_PERID() macro
NFS: Fix up commit deadlocks
NFS: Fix an Oops in pnfs_mark_request_commit()
Fix user namespace leak
auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string
auxdisplay: ht16k33: Connect backlight to fbdev
auxdisplay: ht16k33: Fix frame buffer device blanking
soc: fsl: dpaa2-console: free buffer before returning from dpaa2_console_read
netfilter: nfnetlink_queue: fix OOB when mac header was cleared
dmaengine: dmaengine_desc_callback_valid(): Check for `callback_result`
signal/sh: Use force_sig(SIGKILL) instead of do_group_exit(SIGKILL)
m68k: set a default value for MEMORY_RESERVE
watchdog: f71808e_wdt: fix inaccurate report in WDIOC_GETTIMEOUT
ar7: fix kernel builds for compiler test
scsi: qla2xxx: Changes to support FCP2 Target
scsi: qla2xxx: Relogin during fabric disturbance
scsi: qla2xxx: Fix gnl list corruption
scsi: qla2xxx: Turn off target reset during issue_lip
NFSv4: Fix a regression in nfs_set_open_stateid_locked()
i2c: xlr: Fix a resource leak in the error handling path of 'xlr_i2c_probe()'
xen-pciback: Fix return in pm_ctrl_init()
net: davinci_emac: Fix interrupt pacing disable
ethtool: fix ethtool msg len calculation for pause stats
openrisc: fix SMP tlb flush NULL pointer dereference
net: vlan: fix a UAF in vlan_dev_real_dev()
ice: Fix replacing VF hardware MAC to existing MAC filter
ice: Fix not stopping Tx queues for VFs
ACPI: PMIC: Fix intel_pmic_regs_handler() read accesses
drm/nouveau/svm: Fix refcount leak bug and missing check against null bug
net: phy: fix duplex out of sync problem while changing settings
bonding: Fix a use-after-free problem when bond_sysfs_slave_add() failed
mfd: core: Add missing of_node_put for loop iteration
can: mcp251xfd: mcp251xfd_chip_start(): fix error handling for mcp251xfd_chip_rx_int_enable()
mm/zsmalloc.c: close race window between zs_pool_dec_isolated() and zs_unregister_migration()
zram: off by one in read_block_state()
perf bpf: Add missing free to bpf_event__print_bpf_prog_info()
llc: fix out-of-bound array index in llc_sk_dev_hash()
nfc: pn533: Fix double free when pn533_fill_fragment_skbs() fails
arm64: pgtable: make __pte_to_phys/__phys_to_pte_val inline functions
bpf, sockmap: Remove unhash handler for BPF sockmap usage
bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding
gve: Fix off by one in gve_tx_timeout()
seq_file: fix passing wrong private data
net/sched: sch_taprio: fix undefined behavior in ktime_mono_to_any
net: hns3: fix kernel crash when unload VF while it is being reset
net: hns3: allow configure ETS bandwidth of all TCs
net: stmmac: allow a tc-taprio base-time of zero
vsock: prevent unnecessary refcnt inc for nonblocking connect
net/smc: fix sk_refcnt underflow on linkdown and fallback
cxgb4: fix eeprom len when diagnostics not implemented
selftests/net: udpgso_bench_rx: fix port argument
ARM: 9155/1: fix early early_iounmap()
ARM: 9156/1: drop cc-option fallbacks for architecture selection
parisc: Fix backtrace to always include init funtion names
MIPS: Fix assembly error from MIPSr2 code used within MIPS_ISA_ARCH_LEVEL
x86/mce: Add errata workaround for Skylake SKX37
posix-cpu-timers: Clear task::posix_cputimers_work in copy_process()
irqchip/sifive-plic: Fixup EOI failed when masked
f2fs: should use GFP_NOFS for directory inodes
net, neigh: Enable state migration between NUD_PERMANENT and NTF_USE
9p/net: fix missing error check in p9_check_errors
memcg: prohibit unconditional exceeding the limit of dying tasks
powerpc/lib: Add helper to check if offset is within conditional branch range
powerpc/bpf: Validate branch ranges
powerpc/security: Add a helper to query stf_barrier type
powerpc/bpf: Emit stf barrier instruction sequences for BPF_NOSPEC
mm, oom: pagefault_out_of_memory: don't force global OOM for dying tasks
mm, oom: do not trigger out_of_memory from the #PF
mfd: dln2: Add cell for initializing DLN2 ADC
video: backlight: Drop maximum brightness override for brightness zero
s390/cio: check the subchannel validity for dev_busid
s390/tape: fix timer initialization in tape_std_assign()
s390/ap: Fix hanging ioctl caused by orphaned replies
s390/cio: make ccw_device_dma_* more robust
mtd: rawnand: ams-delta: Keep the driver compatible with on-die ECC engines
mtd: rawnand: xway: Keep the driver compatible with on-die ECC engines
mtd: rawnand: mpc5121: Keep the driver compatible with on-die ECC engines
mtd: rawnand: gpio: Keep the driver compatible with on-die ECC engines
mtd: rawnand: pasemi: Keep the driver compatible with on-die ECC engines
mtd: rawnand: orion: Keep the driver compatible with on-die ECC engines
mtd: rawnand: plat_nand: Keep the driver compatible with on-die ECC engines
mtd: rawnand: au1550nd: Keep the driver compatible with on-die ECC engines
powerpc/powernv/prd: Unregister OPAL_MSG_PRD2 notifier during module unload
powerpc/85xx: fix timebase sync issue when CONFIG_HOTPLUG_CPU=n
drm/sun4i: Fix macros in sun8i_csc.h
PCI: Add PCI_EXP_DEVCTL_PAYLOAD_* macros
PCI: aardvark: Fix PCIe Max Payload Size setting
SUNRPC: Partial revert of commit 6f9f17287e
ath10k: fix invalid dma_addr_t token assignment
mmc: moxart: Fix null pointer dereference on pointer host
selftests/bpf: Fix also no-alu32 strobemeta selftest
arch/cc: Introduce a function to check for confidential computing features
x86/sev: Add an x86 version of cc_platform_has()
x86/sev: Make the #VC exception stacks part of the default stacks storage
soc/tegra: pmc: Fix imbalanced clock disabling in error code path
Linux 5.10.80
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I21c750863965fbf584251fa2de3c941ae5922d3f
[ Upstream commit afe8605ca45424629fdddfd85984b442c763dc47 ]
There is one possible race window between zs_pool_dec_isolated() and
zs_unregister_migration() because wait_for_isolated_drain() checks the
isolated count without holding class->lock and there is no order inside
zs_pool_dec_isolated(). Thus the below race window could be possible:
zs_pool_dec_isolated zs_unregister_migration
check pool->destroying != 0
pool->destroying = true;
smp_mb();
wait_for_isolated_drain()
wait for pool->isolated_pages == 0
atomic_long_dec(&pool->isolated_pages);
atomic_long_read(&pool->isolated_pages) == 0
Since we observe the pool->destroying (false) before atomic_long_dec()
for pool->isolated_pages, waking pool->migration_wait up is missed.
Fix this by ensure checking pool->destroying happens after the
atomic_long_dec(&pool->isolated_pages).
Link: https://lkml.kernel.org/r/20210708115027.7557-1-linmiaohe@huawei.com
Fixes: 701d678599 ("mm/zsmalloc.c: fix race condition in zs_destroy_pool")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Henry Burns <henryburns@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Merge 5.10.21 into android12-5.10
Changes in 5.10.21
net: usb: qmi_wwan: support ZTE P685M modem
Input: elantech - fix protocol errors for some trackpoints in SMBus mode
Input: elan_i2c - add new trackpoint report type 0x5F
drm/virtio: use kvmalloc for large allocations
x86/build: Treat R_386_PLT32 relocation as R_386_PC32
JFS: more checks for invalid superblock
sched/core: Allow try_invoke_on_locked_down_task() with irqs disabled
udlfb: Fix memory leak in dlfb_usb_probe
media: mceusb: sanity check for prescaler value
erofs: fix shift-out-of-bounds of blkszbits
media: v4l2-ctrls.c: fix shift-out-of-bounds in std_validate
xfs: Fix assert failure in xfs_setattr_size()
net/af_iucv: remove WARN_ONCE on malformed RX packets
smackfs: restrict bytes count in smackfs write functions
tomoyo: ignore data race while checking quota
net: fix up truesize of cloned skb in skb_prepare_for_shift()
riscv: Get rid of MAX_EARLY_MAPPING_SIZE
nbd: handle device refs for DESTROY_ON_DISCONNECT properly
mm/hugetlb.c: fix unnecessary address expansion of pmd sharing
RDMA/rtrs: Do not signal for heatbeat
RDMA/rtrs-clt: Use bitmask to check sess->flags
RDMA/rtrs-srv: Do not signal REG_MR
tcp: fix tcp_rmem documentation
mptcp: do not wakeup listener for MPJ subflows
net: bridge: use switchdev for port flags set through sysfs too
net/sched: cls_flower: Reject invalid ct_state flags rules
net: dsa: tag_rtl4_a: Support also egress tags
net: ag71xx: remove unnecessary MTU reservation
net: hsr: add support for EntryForgetTime
net: psample: Fix netlink skb length with tunnel info
net: fix dev_ifsioc_locked() race condition
dt-bindings: ethernet-controller: fix fixed-link specification
dt-bindings: net: btusb: DT fix s/interrupt-name/interrupt-names/
ASoC: qcom: Remove useless debug print
rsi: Fix TX EAPOL packet handling against iwlwifi AP
rsi: Move card interrupt handling to RX thread
EDAC/amd64: Do not load on family 0x15, model 0x13
staging: fwserial: Fix error handling in fwserial_create
x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk
vt/consolemap: do font sum unsigned
wlcore: Fix command execute failure 19 for wl12xx
Bluetooth: hci_h5: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for btrtl
Bluetooth: btusb: fix memory leak on suspend and resume
mt76: mt7615: reset token when mac_reset happens
pktgen: fix misuse of BUG_ON() in pktgen_thread_worker()
ath10k: fix wmi mgmt tx queue full due to race condition
net: sfp: add mode quirk for GPON module Ubiquiti U-Fiber Instant
Bluetooth: Add new HCI_QUIRK_NO_SUSPEND_NOTIFIER quirk
Bluetooth: Fix null pointer dereference in amp_read_loc_assoc_final_data
staging: most: sound: add sanity check for function argument
staging: bcm2835-audio: Replace unsafe strcpy() with strscpy()
brcmfmac: Add DMI nvram filename quirk for Predia Basic tablet
brcmfmac: Add DMI nvram filename quirk for Voyo winpad A15 tablet
drm/hisilicon: Fix use-after-free
crypto: tcrypt - avoid signed overflow in byte count
fs: make unlazy_walk() error handling consistent
drm/amdgpu: Add check to prevent IH overflow
PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse
ASoC: Intel: bytcr_rt5640: Add new BYT_RT5640_NO_SPEAKERS quirk-flag
drm/amd/display: Guard against NULL pointer deref when get_i2c_info fails
drm/amd/amdgpu: add error handling to amdgpu_virt_read_pf2vf_data
media: uvcvideo: Allow entities with no pads
f2fs: handle unallocated section and zone on pinned/atgc
f2fs: fix to set/clear I_LINKABLE under i_lock
nvme-core: add cancel tagset helpers
nvme-rdma: add clean action for failed reconnection
nvme-tcp: add clean action for failed reconnection
ASoC: Intel: Add DMI quirk table to soc_intel_is_byt_cr()
btrfs: fix error handling in commit_fs_roots
perf/x86/kvm: Add Cascade Lake Xeon steppings to isolation_ucodes[]
ASoC: Intel: sof-sdw: indent and add quirks consistently
ASoC: Intel: sof_sdw: detect DMIC number based on mach params
parisc: Bump 64-bit IRQ stack size to 64 KB
sched/features: Fix hrtick reprogramming
ASoC: Intel: bytcr_rt5640: Add quirk for the Estar Beauty HD MID 7316R tablet
ASoC: Intel: bytcr_rt5640: Add quirk for the Voyo Winpad A15 tablet
ASoC: Intel: bytcr_rt5651: Add quirk for the Jumper EZpad 7 tablet
ASoC: Intel: bytcr_rt5640: Add quirk for the Acer One S1002 tablet
scsi: iscsi: Restrict sessions and handles to admin capabilities
scsi: iscsi: Ensure sysfs attributes are limited to PAGE_SIZE
scsi: iscsi: Verify lengths on passthrough PDUs
Xen/gnttab: handle p2m update errors on a per-slot basis
xen-netback: respect gnttab_map_refs()'s return value
xen: fix p2m size in dom0 for disabled memory hotplug case
zsmalloc: account the number of compacted pages correctly
remoteproc/mediatek: Fix kernel test robot warning
swap: fix swapfile read/write offset
powerpc/sstep: Check instruction validity against ISA version before emulation
powerpc/sstep: Fix incorrect return from analyze_instr()
tty: fix up iterate_tty_read() EOVERFLOW handling
tty: fix up hung_up_tty_read() conversion
tty: clean up legacy leftovers from n_tty line discipline
tty: teach n_tty line discipline about the new "cookie continuations"
tty: teach the n_tty ICANON case about the new "cookie continuations" too
media: v4l: ioctl: Fix memory leak in video_usercopy
ALSA: hda/realtek: Add quirk for Clevo NH55RZQ
ALSA: hda/realtek: Add quirk for Intel NUC 10
ALSA: hda/realtek: Apply dual codec quirks for MSI Godlike X570 board
net: sfp: VSOL V2801F / CarlitoxxPro CPGOS03-0490 v2.0 workaround
net: sfp: add workaround for Realtek RTL8672 and RTL9601C chips
Linux 5.10.21
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I52b1105b73d893779b3886b577accfabe9f83a16
commit 2395928158059b8f9858365fce7713ce7fef62e4 upstream.
There exists multiple path may do zram compaction concurrently.
1. auto-compaction triggered during memory reclaim
2. userspace utils write zram<id>/compaction node
So, multiple threads may call zs_shrinker_scan/zs_compact concurrently.
But pages_compacted is a per zsmalloc pool variable and modification
of the variable is not serialized(through under class->lock).
There are two issues here:
1. the pages_compacted may not equal to total number of pages
freed(due to concurrently add).
2. zs_shrinker_scan may not return the correct number of pages
freed(issued by current shrinker).
The fix is simple:
1. account the number of pages freed in zs_compact locally.
2. use actomic variable pages_compacted to accumulate total number.
Link: https://lkml.kernel.org/r/20210202122235.26885-1-wu-yan@tcl.com
Fixes: 860c707dca ("zsmalloc: account the number of compacted pages")
Signed-off-by: Rokudo Yan <wu-yan@tcl.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Though zram pages are movable, they aren't allowed to enter
MIGRATE_CMA pageblocks. zram is not seen to pin pages for
long which can cause an issue. Moreover allowing zram to
pick CMA pages can be helpful in cases seen where zram order
0 alloc fails when there are lots of free cma pages, resulting
in kswapd or direct reclaim not making enough progress.
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
Signed-off-by: Chris Goldsworthy <cgoldswo@codeaurora.org>
Bug: 158645321
Link: https://lore.kernel.org/linux-mm/4c77bb100706b714213ff840d827a48e40ac9177.1604282969.git.cgoldswo@codeaurora.org/
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I406f92a4175367caec38ef8b8eaca7020ae09917
While I was doing zram testing, I found sometimes decompression failed
since the compression buffer was corrupted. With investigation, I found
below commit calls cond_resched unconditionally so it could make a
problem in atomic context if the task is reschedule.
BUG: sleeping function called from invalid context at mm/vmalloc.c:108
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 946, name: memhog
3 locks held by memhog/946:
#0: ffff9d01d4b193e8 (&mm->mmap_lock#2){++++}-{4:4}, at: __mm_populate+0x103/0x160
#1: ffffffffa3d53de0 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa98/0x1160
#2: ffff9d01d56b8110 (&zspage->lock){.+.+}-{3:3}, at: zs_map_object+0x8e/0x1f0
CPU: 0 PID: 946 Comm: memhog Not tainted 5.9.3-00011-gc5bfc0287345-dirty #316
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1 04/01/2014
Call Trace:
unmap_kernel_range_noflush+0x2eb/0x350
unmap_kernel_range+0x14/0x30
zs_unmap_object+0xd5/0xe0
zram_bvec_rw.isra.0+0x38c/0x8e0
zram_rw_page+0x90/0x101
bdev_write_page+0x92/0xe0
__swap_writepage+0x94/0x4a0
pageout+0xe3/0x3a0
shrink_page_list+0xb94/0xd60
shrink_inactive_list+0x158/0x460
We can fix this by removing the ZSMALLOC_PGTABLE_MAPPING feature (which
contains the offending calling code) from zsmalloc.
Even though this option showed some amount improvement(e.g., 30%) in
some arm32 platforms, it has been headache to maintain since it have
abused APIs[1](e.g., unmap_kernel_range in atomic context).
Since we are approaching to deprecate 32bit machines and already made
the config option available for only builtin build since v5.8, lastly it
has been not default option in zsmalloc, it's time to drop the option
for better maintenance.
[1] http://lore.kernel.org/linux-mm/20201105170249.387069-1-minchan@kernel.org
Fixes: e47110e905 ("mm/vunmap: add cond_resched() in vunmap_pmd_range")
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Harish Sriram <harish@linux.ibm.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201117202916.GA3856507@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change "as as" to "as a".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Link: http://lkml.kernel.org/r/20200801173822.14973-16-rdunlap@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The replacement of <asm/pgrable.h> with <linux/pgtable.h> made the include
of the latter in the middle of asm includes. Fix this up with the aid of
the below script and manual adjustments here and there.
import sys
import re
if len(sys.argv) is not 3:
print "USAGE: %s <file> <header>" % (sys.argv[0])
sys.exit(1)
hdr_to_move="#include <linux/%s>" % sys.argv[2]
moved = False
in_hdrs = False
with open(sys.argv[1], "r") as f:
lines = f.readlines()
for _line in lines:
line = _line.rstrip('
')
if line == hdr_to_move:
continue
if line.startswith("#include <linux/"):
in_hdrs = True
elif not moved and in_hdrs:
moved = True
print hdr_to_move
print line
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200514170327.31389-4-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The include/linux/pgtable.h is going to be the home of generic page table
manipulation functions.
Start with moving asm-generic/pgtable.h to include/linux/pgtable.h and
make the latter include asm/pgtable.h.
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200514170327.31389-3-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Switch all callers to map_kernel_range, which symmetric to the unmap side
(as well as the _noflush versions).
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Gao Xiang <xiang@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Kelley <mikelley@microsoft.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200414131348.444715-17-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sparse reports a warning at unpin_tag()()
warning: context imbalance in unpin_tag() - unexpected unlock
The root cause is the missing annotation at unpin_tag()
Add the missing __releases(bitlock) annotation
Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/20200214204741.94112-14-jbi.octave@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sparse reports a warning at pin_tag()()
warning: context imbalance in pin_tag() - wrong count at exit
The root cause is the missing annotation at pin_tag()
Add the missing __acquires(bitlock) annotation
Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/20200214204741.94112-13-jbi.octave@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sparse reports a warning at migrate_read_unlock()()
warning: context imbalance in migrate_read_unlock() - unexpected unlock
The root cause is the missing annotation at migrate_read_unlock()
Add the missing __releases(&zspage->lock) annotation
Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/20200214204741.94112-12-jbi.octave@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sparse reports a warning at migrate_read_lock()()
warning: context imbalance in migrate_read_lock() - wrong count at exit
The root cause is the missing annotation at migrate_read_lock()
Add the missing __acquires(&zspage->lock) annotation
Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/20200214204741.94112-11-jbi.octave@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When zspage is migrated to the other zone, the zone page state should be
updated as well, otherwise the NR_ZSPAGE for each zone shows wrong
counts including proc/zoneinfo in practice.
Link: http://lkml.kernel.org/r/1575434841-48009-1-git-send-email-chanho.min@lge.com
Fixes: 91537fee00 ("mm: add NR_ZSMALLOC to vmstat")
Signed-off-by: Chanho Min <chanho.min@lge.com>
Signed-off-by: Jinsuk Choi <jjinsuk.choi@lge.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org> [4.9+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
set_zspage_inuse() was introduced in the commit 4f42047bbd ("zsmalloc:
use accessor") but all the users of it were removed later by the commits,
bdb0af7ca8 ("zsmalloc: factor page chain functionality out")
3783689a1a ("zsmalloc: introduce zspage structure")
so the function can be safely removed now.
Link: http://lkml.kernel.org/r/1568658408-19374-1-git-send-email-cai@lca.pw
Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
As a zpool_driver, zsmalloc can allocate movable memory because it support
migate pages. But zbud and z3fold cannot allocate movable memory.
Add malloc_support_movable to zpool_driver. If a zpool_driver support
allocate movable memory, set it to true. And add
zpool_malloc_support_movable check malloc_support_movable to make sure if
a zpool support allocate movable memory.
Link: http://lkml.kernel.org/r/20190605100630.13293-1-teawaterz@linux.alibaba.com
Signed-off-by: Hui Zhu <teawaterz@linux.alibaba.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In zs_destroy_pool() we call flush_work(&pool->free_work). However, we
have no guarantee that migration isn't happening in the background at
that time.
Since migration can't directly free pages, it relies on free_work being
scheduled to free the pages. But there's nothing preventing an
in-progress migrate from queuing the work *after*
zs_unregister_migration() has called flush_work(). Which would mean
pages still pointing at the inode when we free it.
Since we know at destroy time all objects should be free, no new
migrations can come in (since zs_page_isolate() fails for fully-free
zspages). This means it is sufficient to track a "# isolated zspages"
count by class, and have the destroy logic ensure all such pages have
drained before proceeding. Keeping that state under the class spinlock
keeps the logic straightforward.
In this case a memory leak could lead to an eventual crash if compaction
hits the leaked page. This crash would only occur if people are
changing their zswap backend at runtime (which eventually starts
destruction).
Link: http://lkml.kernel.org/r/20190809181751.219326-2-henryburns@google.com
Fixes: 48b4800a1c ("zsmalloc: page migration support")
Signed-off-by: Henry Burns <henryburns@google.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Henry Burns <henrywolfeburns@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Jonathan Adams <jwadams@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In zs_page_migrate() we call putback_zspage() after we have finished
migrating all pages in this zspage. However, the return value is
ignored. If a zs_free() races in between zs_page_isolate() and
zs_page_migrate(), freeing the last object in the zspage,
putback_zspage() will leave the page in ZS_EMPTY for potentially an
unbounded amount of time.
To fix this, we need to do the same thing as zs_page_putback() does:
schedule free_work to occur.
To avoid duplicated code, move the sequence to a new
putback_zspage_deferred() function which both zs_page_migrate() and
zs_page_putback() call.
Link: http://lkml.kernel.org/r/20190809181751.219326-1-henryburns@google.com
Fixes: 48b4800a1c ("zsmalloc: page migration support")
Signed-off-by: Henry Burns <henryburns@google.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Henry Burns <henrywolfeburns@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Jonathan Adams <jwadams@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull vfs mount updates from Al Viro:
"The first part of mount updates.
Convert filesystems to use the new mount API"
* 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits)
mnt_init(): call shmem_init() unconditionally
constify ksys_mount() string arguments
don't bother with registering rootfs
init_rootfs(): don't bother with init_ramfs_fs()
vfs: Convert smackfs to use the new mount API
vfs: Convert selinuxfs to use the new mount API
vfs: Convert securityfs to use the new mount API
vfs: Convert apparmorfs to use the new mount API
vfs: Convert openpromfs to use the new mount API
vfs: Convert xenfs to use the new mount API
vfs: Convert gadgetfs to use the new mount API
vfs: Convert oprofilefs to use the new mount API
vfs: Convert ibmasmfs to use the new mount API
vfs: Convert qib_fs/ipathfs to use the new mount API
vfs: Convert efivarfs to use the new mount API
vfs: Convert configfs to use the new mount API
vfs: Convert binfmt_misc to use the new mount API
convenience helper: get_tree_single()
convenience helper get_tree_nodev()
vfs: Kill sget_userns()
...
The variable 'entry' is no longer used and the compiler rightly complains
that it should be removed.
../mm/zsmalloc.c: In function `zs_pool_stat_create':
../mm/zsmalloc.c:648:17: warning: unused variable `entry' [-Wunused-variable]
struct dentry *entry;
^~~~~
Rework to remove the unused variable.
Link: http://lkml.kernel.org/r/20190604065826.26064-1-anders.roxell@linaro.org
Fixes: 4268509a36 ("zsmalloc: no need to check return value of debugfs_create functions")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: linux-mm@kvack.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Convert the zsmalloc filesystem to the new internal mount API as the old
one will be obsoleted and removed. This allows greater flexibility in
communication of mount parameters between userspace, the VFS and the
filesystem.
See Documentation/filesystems/mount_api.txt for more information.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Minchan Kim <minchan@kernel.org>
cc: Nitin Gupta <ngupta@vflare.org>
cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
cc: linux-mm@kvack.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Once upon a time we used to set ->d_name of e.g. pipefs root
so that d_path() on pipes would work. These days it's
completely pointless - dentries of pipes are not even connected
to pipefs root. However, mount_pseudo() had set the root
dentry name (passed as the second argument) and callers
kept inventing names to pass to it. Including those that
didn't *have* any non-root dentries to start with...
All of that had been pointless for about 8 years now; it's
time to get rid of that cargo-culting...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Replace "fallthru" with a proper "fall through" annotation.
This fix is part of the ongoing efforts to enabling
-Wimplicit-fallthrough
Link: http://lkml.kernel.org/r/20181003105114.GA24423@embeddedor.com
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The functions zs_page_isolate, zs_page_migrate, zs_page_putback,
lock_zspage, trylock_zspage and structure zsmalloc_aops are local to
source and do not need to be in global scope, so make them static.
Cleans up sparse warnings:
symbol 'zs_page_isolate' was not declared. Should it be static?
symbol 'zs_page_migrate' was not declared. Should it be static?
symbol 'zs_page_putback' was not declared. Should it be static?
symbol 'zsmalloc_aops' was not declared. Should it be static?
symbol 'lock_zspage' was not declared. Should it be static?
symbol 'trylock_zspage' was not declared. Should it be static?
[arnd@arndb.de: hide unused lock_zspage]
Link: http://lkml.kernel.org/r/20180706130924.3891230-1-arnd@arndb.de
Link: http://lkml.kernel.org/r/20180624213322.13776-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/*.c files use symbolic and octal styles for permissions.
Using octal and not symbolic permissions is preferred by many as more
readable.
https://lkml.org/lkml/2016/8/2/1945
Prefer the direct use of octal for permissions.
Done using
$ scripts/checkpatch.pl -f --types=SYMBOLIC_PERMS --fix-inplace mm/*.c
and some typing.
Before: $ git grep -P -w "0[0-7]{3,3}" mm | wc -l
44
After: $ git grep -P -w "0[0-7]{3,3}" mm | wc -l
86
Miscellanea:
o Whitespace neatening around these conversions.
Link: http://lkml.kernel.org/r/2e032ef111eebcd4c5952bae86763b541d373469.1522102887.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "zsmalloc/zram: drop zram's max_zpage_size", v3.
ZRAM's max_zpage_size is a bad thing. It forces zsmalloc to store
normal objects as huge ones, which results in bigger zsmalloc memory
usage. Drop it and use actual zsmalloc huge-class value when decide if
the object is huge or not.
This patch (of 2):
Not every object can be share its zspage with other objects, e.g. when
the object is as big as zspage or nearly as big a zspage. For such
objects zsmalloc has a so called huge class - every object which belongs
to huge class consumes the entire zspage (which consists of a physical
page). On x86_64, PAGE_SHIFT 12 box, the first non-huge class size is
3264, so starting down from size 3264, objects can share page(-s) and
thus minimize memory wastage.
ZRAM, however, has its own statically defined watermark for huge
objects, namely "3 * PAGE_SIZE / 4 = 3072", and forcibly stores every
object larger than this watermark (3072) as a PAGE_SIZE object, in other
words, to a huge class, while zsmalloc can keep some of those objects in
non-huge classes. This results in increased memory consumption.
zsmalloc knows better if the object is huge or not. Introduce
zs_huge_class_size() function which tells if the given object can be
stored in one of non-huge classes or not. This will let us to drop
ZRAM's huge object watermark and fully rely on zsmalloc when we decide
if the object is huge.
[sergey.senozhatsky.work@gmail.com: add pool param to zs_huge_class_size()]
Link: http://lkml.kernel.org/r/20180314081833.1096-2-sergey.senozhatsky@gmail.com
Link: http://lkml.kernel.org/r/20180306070639.7389-2-sergey.senozhatsky@gmail.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
With boot-time switching between paging mode we will have variable
MAX_PHYSMEM_BITS.
Let's use the maximum variable possible for CONFIG_X86_5LEVEL=y
configuration to define zsmalloc data structures.
The patch introduces MAX_POSSIBLE_PHYSMEM_BITS to cover such case.
It also suits well to handle PAE special case.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Nitin Gupta <ngupta@vflare.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20180214111656.88514-3-kirill.shutemov@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
We waste sizeof(swp_entry_t) for zswap header when using zsmalloc as
zpool driver because zsmalloc doesn't support eviction.
Add zpool_evictable() to detect if zpool is potentially evictable, and
use it in zswap to avoid waste memory for zswap header.
[yuzhao@google.com: The zpool->" prefix is a result of copy & paste]
Link: http://lkml.kernel.org/r/20180110225626.110330-1-yuzhao@google.com
Link: http://lkml.kernel.org/r/20180110224741.83751-1-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Acked-by: Dan Streetman <ddstreet@ieee.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Structure zs_pool has special flag to indicate success of shrinker
initialization. unregister_shrinker() has improved and can detect by
itself whether actual deinitialization should be performed or not, so
extra flag becomes redundant.
[akpm@linux-foundation.org: update comment (Aliaksei), remove unneeded cast]
Link: http://lkml.kernel.org/r/1513680552-9798-1-git-send-email-akaraliou.dev@gmail.com
Signed-off-by: Aliaksei Karaliou <akaraliou.dev@gmail.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
`struct file_system_type' and alloc_anon_inode() function are defined in
fs.h, include it directly.
Link: http://lkml.kernel.org/r/20171219104219.3017-1-sergey.senozhatsky@gmail.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Use BUG_ON(in_interrupt()) in zs_map_object(). This is not a new
BUG_ON(), it's always been there, but was recently changed to
VM_BUG_ON(). There are several problems there. First, we use use
per-CPU mappings both in zsmalloc and in zram, and interrupt may easily
corrupt those buffers. Second, and more importantly, we believe it's
possible to start leaking sensitive information. Consider the following
case:
-> process P
swap out
zram
per-cpu mapping CPU1
compress page A
-> IRQ
swap out
zram
per-cpu mapping CPU1
compress page B
write page from per-cpu mapping CPU1 to zsmalloc pool
iret
-> process P
write page from per-cpu mapping CPU1 to zsmalloc pool [*]
return
* so we store overwritten data that actually belongs to another
page (task) and potentially contains sensitive data. And when
process P will page fault it's going to read (swap in) that
other task's data.
Link: http://lkml.kernel.org/r/20170929045140.4055-1-sergey.senozhatsky@gmail.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
zs_stat_inc/dec/get() uses enum zs_stat_type for the stat type, however
some callers pass an enum fullness_group value. Change the type to int to
reflect the actual use of the functions and get rid of 'enum-conversion'
warnings
Link: http://lkml.kernel.org/r/20170731175000.56538-1-mka@chromium.org
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Doug Anderson <dianders@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Introduce a new migration mode that allow to offload the copy to a device
DMA engine. This changes the workflow of migration and not all
address_space migratepage callback can support this.
This is intended to be use by migrate_vma() which itself is use for thing
like HMM (see include/linux/hmm.h).
No additional per-filesystem migratepage testing is needed. I disables
MIGRATE_SYNC_NO_COPY in all problematic migratepage() callback and i
added comment in those to explain why (part of this patch). The commit
message is unclear it should say that any callback that wish to support
this new mode need to be aware of the difference in the migration flow
from other mode.
Some of these callbacks do extra locking while copying (aio, zsmalloc,
balloon, ...) and for DMA to be effective you want to copy multiple
pages in one DMA operations. But in the problematic case you can not
easily hold the extra lock accross multiple call to this callback.
Usual flow is:
For each page {
1 - lock page
2 - call migratepage() callback
3 - (extra locking in some migratepage() callback)
4 - migrate page state (freeze refcount, update page cache, buffer
head, ...)
5 - copy page
6 - (unlock any extra lock of migratepage() callback)
7 - return from migratepage() callback
8 - unlock page
}
The new mode MIGRATE_SYNC_NO_COPY:
1 - lock multiple pages
For each page {
2 - call migratepage() callback
3 - abort in all problematic migratepage() callback
4 - migrate page state (freeze refcount, update page cache, buffer
head, ...)
} // finished all calls to migratepage() callback
5 - DMA copy multiple pages
6 - unlock all the pages
To support MIGRATE_SYNC_NO_COPY in the problematic case we would need a
new callback migratepages() (for instance) that deals with multiple
pages in one transaction.
Because the problematic cases are not important for current usage I did
not wanted to complexify this patchset even more for no good reason.
Link: http://lkml.kernel.org/r/20170817000548.32038-14-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Nellans <dnellans@nvidia.com>
Cc: Evgeny Baskakov <ebaskakov@nvidia.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mark Hairgrove <mhairgrove@nvidia.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Sherry Cheung <SCheung@nvidia.com>
Cc: Subhash Gutti <sgutti@nvidia.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Bob Liu <liubo95@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Getting -EBUSY from zs_page_migrate will make migration slow (retry) or
fail (zs_page_putback will schedule_work free_work, but it cannot ensure
the success).
I noticed this issue because my Kernel patched
(https://lkml.org/lkml/2014/5/28/113) that will remove retry in
__alloc_contig_migrate_range.
This retry will handle the -EBUSY because it will re-isolate the page
and re-call migrate_pages. Without it will make cma_alloc fail at once
with -EBUSY.
According to the review from Minchan Kim in
https://lkml.org/lkml/2014/5/28/113, I update the patch to skip
unnecessary loops but not return -EBUSY if zspage is not inuse.
Following is what I got with highalloc-performance in a vbox with 2 cpu
1G memory 512 zram as swap. And the swappiness is set to 100.
ori ne
orig new
Minor Faults 50805113 50830235
Major Faults 43918 56530
Swap Ins 42087 55680
Swap Outs 89718 104700
Allocation stalls 0 0
DMA allocs 57787 52364
DMA32 allocs 47964599 48043563
Normal allocs 0 0
Movable allocs 0 0
Direct pages scanned 45493 23167
Kswapd pages scanned 1565222 1725078
Kswapd pages reclaimed 1342222 1503037
Direct pages reclaimed 45615 25186
Kswapd efficiency 85% 87%
Kswapd velocity 1897.101 1949.042
Direct efficiency 100% 108%
Direct velocity 55.139 26.175
Percentage direct scans 2% 1%
Zone normal velocity 1952.240 1975.217
Zone dma32 velocity 0.000 0.000
Zone dma velocity 0.000 0.000
Page writes by reclaim 89764.000 105233.000
Page writes file 46 533
Page writes anon 89718 104700
Page reclaim immediate 21457 3699
Sector Reads 3259688 3441368
Sector Writes 3667252 3754836
Page rescued immediate 0 0
Slabs scanned 1042872 1160855
Direct inode steals 8042 10089
Kswapd inode steals 54295 29170
Kswapd skipped wait 0 0
THP fault alloc 175 154
THP collapse alloc 226 289
THP splits 0 0
THP fault fallback 11 14
THP collapse fail 3 2
Compaction stalls 536 646
Compaction success 322 358
Compaction failures 214 288
Page migrate success 119608 111063
Page migrate failure 2723 2593
Compaction pages isolated 250179 232652
Compaction migrate scanned 9131832 9942306
Compaction free scanned 2093272 2613998
Compaction cost 192 189
NUMA alloc hit 47124555 47193990
NUMA alloc miss 0 0
NUMA interleave hit 0 0
NUMA alloc local 47124555 47193990
NUMA base PTE updates 0 0
NUMA huge PMD updates 0 0
NUMA page range updates 0 0
NUMA hint faults 0 0
NUMA hint local faults 0 0
NUMA hint local percent 100 100
NUMA pages migrated 0 0
AutoNUMA cost 0% 0%
[akpm@linux-foundation.org: remove newline, per Minchan]
Link: http://lkml.kernel.org/r/1500889535-19648-1-git-send-email-zhuhui@xiaomi.com
Signed-off-by: Hui Zhu <zhuhui@xiaomi.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 40f9fb8cff ("mm/zsmalloc: support allocating obj with size of
ZS_MAX_ALLOC_SIZE") fixes a size calculation error that prevented
zsmalloc to allocate an object of the maximal size (ZS_MAX_ALLOC_SIZE).
I think however the fix is unneededly complicated.
This patch replaces the dynamic calculation of zs_size_classes at init
time by a compile time calculation that uses the DIV_ROUND_UP() macro
already used in get_size_class_index().
[akpm@linux-foundation.org: use min_t]
Link: http://lkml.kernel.org/r/20170630114859.1979-1-jmarchan@redhat.com
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Mahendran Ganesh <opensource.ganesh@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
is_first_page() is only called from the macro VM_BUG_ON_PAGE() which is
only compiled in as a runtime check when CONFIG_DEBUG_VM is set,
otherwise is checked at compile time and not actually compiled in.
Fixes the following warning, found with Clang:
mm/zsmalloc.c:472:12: warning: function 'is_first_page' is not needed and will not be emitted [-Wunneeded-internal-declaration]
static int is_first_page(struct page *page)
^
Link: http://lkml.kernel.org/r/20170524053859.29059-1-nick.desaulniers@gmail.com
Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Now 64K page system, zsamlloc has 257 classes so 8 class bit is not
enough. With that, it corrupts the system when zsmalloc stores
65536byte data(ie, index number 256) so that this patch increases class
bit for simple fix for stable backport. We should clean up this mess
soon.
index size
0 32
1 288
..
..
204 52256
256 65536
Fixes: 3783689a1 ("zsmalloc: introduce zspage structure")
Link: http://lkml.kernel.org/r/1492042622-12074-3-git-send-email-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Greg Kroah-Hartman