5280d76d38f095b808b84d1c9973c98cbe36175d
197 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Greg Kroah-Hartman
|
b41a37c036 |
Merge 5.15.33 into android13-5.15
Changes in 5.15.33
Revert "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""
USB: serial: pl2303: add IBM device IDs
dt-bindings: usb: hcd: correct usb-device path
USB: serial: pl2303: fix GS type detection
USB: serial: simple: add Nokia phone driver
mm: kfence: fix missing objcg housekeeping for SLAB
hv: utils: add PTP_1588_CLOCK to Kconfig to fix build
HID: logitech-dj: add new lightspeed receiver id
HID: Add support for open wheel and no attachment to T300
xfrm: fix tunnel model fragmentation behavior
ARM: mstar: Select HAVE_ARM_ARCH_TIMER
virtio_console: break out of buf poll on remove
vdpa/mlx5: should verify CTRL_VQ feature exists for MQ
tools/virtio: fix virtio_test execution
ethernet: sun: Free the coherent when failing in probing
gpio: Revert regression in sysfs-gpio (gpiolib.c)
spi: Fix invalid sgs value
net:mcf8390: Use platform_get_irq() to get the interrupt
Revert "gpio: Revert regression in sysfs-gpio (gpiolib.c)"
spi: Fix erroneous sgs value with min_t()
Input: zinitix - do not report shadow fingers
af_key: add __GFP_ZERO flag for compose_sadb_supported in function pfkey_register
net: dsa: microchip: add spi_device_id tables
selftests: vm: fix clang build error multiple output files
locking/lockdep: Avoid potential access of invalid memory in lock_class
drm/amdgpu: move PX checking into amdgpu_device_ip_early_init
drm/amdgpu: only check for _PR3 on dGPUs
iommu/iova: Improve 32-bit free space estimate
virtio-blk: Use blk_validate_block_size() to validate block size
tpm: fix reference counting for struct tpm_chip
usb: typec: tipd: Forward plug orientation to typec subsystem
USB: usb-storage: Fix use of bitfields for hardware data in ene_ub6250.c
xhci: fix garbage USBSTS being logged in some cases
xhci: fix runtime PM imbalance in USB2 resume
xhci: make xhci_handshake timeout for xhci_reset() adjustable
xhci: fix uninitialized string returned by xhci_decode_ctrl_ctx()
mei: me: disable driver on the ign firmware
mei: me: add Alder Lake N device id.
mei: avoid iterator usage outside of list_for_each_entry
bus: mhi: pci_generic: Add mru_default for Quectel EM1xx series
bus: mhi: Fix MHI DMA structure endianness
docs: sphinx/requirements: Limit jinja2<3.1
coresight: Fix TRCCONFIGR.QE sysfs interface
coresight: syscfg: Fix memleak on registration failure in cscfg_create_device
iio: afe: rescale: use s64 for temporary scale calculations
iio: inkern: apply consumer scale on IIO_VAL_INT cases
iio: inkern: apply consumer scale when no channel scale is available
iio: inkern: make a best effort on offset calculation
greybus: svc: fix an error handling bug in gb_svc_hello()
clk: rockchip: re-add rational best approximation algorithm to the fractional divider
clk: uniphier: Fix fixed-rate initialization
ptrace: Check PTRACE_O_SUSPEND_SECCOMP permission on PTRACE_SEIZE
cifs: fix handlecache and multiuser
cifs: we do not need a spinlock around the tree access during umount
KEYS: fix length validation in keyctl_pkey_params_get_2()
KEYS: asymmetric: enforce that sig algo matches key algo
KEYS: asymmetric: properly validate hash_algo and encoding
Documentation: add link to stable release candidate tree
Documentation: update stable tree link
firmware: stratix10-svc: add missing callback parameter on RSU
firmware: sysfb: fix platform-device leak in error path
HID: intel-ish-hid: Use dma_alloc_coherent for firmware update
SUNRPC: avoid race between mod_timer() and del_timer_sync()
NFS: NFSv2/v3 clients should never be setting NFS_CAP_XATTR
NFSD: prevent underflow in nfssvc_decode_writeargs()
NFSD: prevent integer overflow on 32 bit systems
f2fs: fix to unlock page correctly in error path of is_alive()
f2fs: quota: fix loop condition at f2fs_quota_sync()
f2fs: fix to do sanity check on .cp_pack_total_block_count
remoteproc: Fix count check in rproc_coredump_write()
mm/mlock: fix two bugs in user_shm_lock()
pinctrl: ingenic: Fix regmap on X series SoCs
pinctrl: samsung: drop pin banks references on error paths
net: bnxt_ptp: fix compilation error
spi: mxic: Fix the transmit path
mtd: rawnand: protect access to rawnand devices while in suspend
can: ems_usb: ems_usb_start_xmit(): fix double dev_kfree_skb() in error path
can: m_can: m_can_tx_handler(): fix use after free of skb
can: usb_8dev: usb_8dev_start_xmit(): fix double dev_kfree_skb() in error path
jffs2: fix use-after-free in jffs2_clear_xattr_subsystem
jffs2: fix memory leak in jffs2_do_mount_fs
jffs2: fix memory leak in jffs2_scan_medium
mm: fs: fix lru_cache_disabled race in bh_lru
mm/pages_alloc.c: don't create ZONE_MOVABLE beyond the end of a node
mm: invalidate hwpoison page cache page in fault path
mempolicy: mbind_range() set_policy() after vma_merge()
scsi: core: sd: Add silence_suspend flag to suppress some PM messages
scsi: ufs: Fix runtime PM messages never-ending cycle
scsi: scsi_transport_fc: Fix FPIN Link Integrity statistics counters
scsi: libsas: Fix sas_ata_qc_issue() handling of NCQ NON DATA commands
qed: display VF trust config
qed: validate and restrict untrusted VFs vlan promisc mode
riscv: dts: canaan: Fix SPI3 bus width
riscv: Fix fill_callchain return value
riscv: Increase stack size under KASAN
Revert "Input: clear BTN_RIGHT/MIDDLE on buttonpads"
cifs: prevent bad output lengths in smb2_ioctl_query_info()
cifs: fix NULL ptr dereference in smb2_ioctl_query_info()
ALSA: cs4236: fix an incorrect NULL check on list iterator
ALSA: hda: Avoid unsol event during RPM suspending
ALSA: pcm: Fix potential AB/BA lock with buffer_mutex and mmap_lock
ALSA: hda/realtek: Fix audio regression on Mi Notebook Pro 2020
rtc: mc146818-lib: fix locking in mc146818_set_time
rtc: pl031: fix rtc features null pointer dereference
ocfs2: fix crash when mount with quota enabled
drm/simpledrm: Add "panel orientation" property on non-upright mounted LCD panels
mm: madvise: skip unmapped vma holes passed to process_madvise
mm: madvise: return correct bytes advised with process_madvise
Revert "mm: madvise: skip unmapped vma holes passed to process_madvise"
mm,hwpoison: unmap poisoned page before invalidation
mm/kmemleak: reset tag when compare object pointer
dm stats: fix too short end duration_ns when using precise_timestamps
dm: fix use-after-free in dm_cleanup_zoned_dev()
dm: interlock pending dm_io and dm_wait_for_bios_completion
dm: fix double accounting of flush with data
dm integrity: set journal entry unused when shrinking device
tracing: Have trace event string test handle zero length strings
drbd: fix potential silent data corruption
powerpc/kvm: Fix kvm_use_magic_page
PCI: fu740: Force 2.5GT/s for initial device probe
arm64: signal: nofpsimd: Do not allocate fp/simd context when not available
arm64: Do not defer reserve_crashkernel() for platforms with no DMA memory zones
arm64: dts: qcom: sm8250: Fix MSI IRQ for PCIe1 and PCIe2
arm64: dts: ti: k3-am65: Fix gic-v3 compatible regs
arm64: dts: ti: k3-j721e: Fix gic-v3 compatible regs
arm64: dts: ti: k3-j7200: Fix gic-v3 compatible regs
arm64: dts: ti: k3-am64: Fix gic-v3 compatible regs
ASoC: SOF: Intel: Fix NULL ptr dereference when ENOMEM
Revert "ACPI: Pass the same capabilities to the _OSC regardless of the query flag"
ACPI: properties: Consistently return -ENOENT if there are no more references
coredump: Also dump first pages of non-executable ELF libraries
ext4: fix ext4_fc_stats trace point
ext4: fix fs corruption when tring to remove a non-empty directory with IO error
ext4: make mb_optimize_scan performance mount option work with extents
drivers: hamradio: 6pack: fix UAF bug caused by mod_timer()
samples/landlock: Fix path_list memory leak
landlock: Use square brackets around "landlock-ruleset"
mailbox: tegra-hsp: Flush whole channel
block: limit request dispatch loop duration
block: don't merge across cgroup boundaries if blkcg is enabled
drm/edid: check basic audio support on CEA extension block
fbdev: Hot-unplug firmware fb devices on forced removal
video: fbdev: sm712fb: Fix crash in smtcfb_read()
video: fbdev: atari: Atari 2 bpp (STe) palette bugfix
rfkill: make new event layout opt-in
ARM: dts: at91: sama7g5: Remove unused properties in i2c nodes
ARM: dts: at91: sama5d2: Fix PMERRLOC resource size
ARM: dts: exynos: fix UART3 pins configuration in Exynos5250
ARM: dts: exynos: add missing HDMI supplies on SMDK5250
ARM: dts: exynos: add missing HDMI supplies on SMDK5420
mgag200 fix memmapsl configuration in GCTL6 register
carl9170: fix missing bit-wise or operator for tx_params
pstore: Don't use semaphores in always-atomic-context code
thermal: int340x: Increase bitmap size
lib/raid6/test: fix multiple definition linking error
exec: Force single empty string when argv is empty
crypto: rsa-pkcs1pad - only allow with rsa
crypto: rsa-pkcs1pad - correctly get hash from source scatterlist
crypto: rsa-pkcs1pad - restore signature length check
crypto: rsa-pkcs1pad - fix buffer overread in pkcs1pad_verify_complete()
bcache: fixup multiple threads crash
PM: domains: Fix sleep-in-atomic bug caused by genpd_debug_remove()
DEC: Limit PMAX memory probing to R3k systems
media: gpio-ir-tx: fix transmit with long spaces on Orange Pi PC
media: venus: hfi_cmds: List HDR10 property as unsupported for v1 and v3
media: venus: venc: Fix h264 8x8 transform control
media: davinci: vpif: fix unbalanced runtime PM get
media: davinci: vpif: fix unbalanced runtime PM enable
btrfs: zoned: mark relocation as writing
btrfs: extend locking to all space_info members accesses
btrfs: verify the tranisd of the to-be-written dirty extent buffer
xtensa: define update_mmu_tlb function
xtensa: fix stop_machine_cpuslocked call in patch_text
xtensa: fix xtensa_wsr always writing 0
drm/syncobj: flatten dma_fence_chains on transfer
drm/nouveau/backlight: Fix LVDS backlight detection on some laptops
drm/nouveau/backlight: Just set all backlight types as RAW
drm/fb-helper: Mark screen buffers in system memory with FBINFO_VIRTFB
brcmfmac: firmware: Allocate space for default boardrev in nvram
brcmfmac: pcie: Release firmwares in the brcmf_pcie_setup error path
brcmfmac: pcie: Declare missing firmware files in pcie.c
brcmfmac: pcie: Replace brcmf_pcie_copy_mem_todev with memcpy_toio
brcmfmac: pcie: Fix crashes due to early IRQs
drm/i915/opregion: check port number bounds for SWSCI display power state
drm/i915/gem: add missing boundary check in vm_access
PCI: imx6: Allow to probe when dw_pcie_wait_for_link() fails
PCI: pciehp: Clear cmd_busy bit in polling mode
PCI: xgene: Revert "PCI: xgene: Fix IB window setup"
regulator: qcom_smd: fix for_each_child.cocci warnings
selinux: access superblock_security_struct in LSM blob way
selinux: check return value of sel_make_avc_files
crypto: ccp - Ensure psp_ret is always init'd in __sev_platform_init_locked()
hwrng: cavium - Check health status while reading random data
hwrng: cavium - HW_RANDOM_CAVIUM should depend on ARCH_THUNDER
crypto: sun8i-ss - really disable hash on A80
crypto: authenc - Fix sleep in atomic context in decrypt_tail
crypto: mxs-dcp - Fix scatterlist processing
selinux: Fix selinux_sb_mnt_opts_compat()
thermal: int340x: Check for NULL after calling kmemdup()
crypto: octeontx2 - remove CONFIG_DM_CRYPT check
spi: tegra114: Add missing IRQ check in tegra_spi_probe
spi: tegra210-quad: Fix missin IRQ check in tegra_qspi_probe
stack: Constrain and fix stack offset randomization with Clang builds
arm64/mm: avoid fixmap race condition when create pud mapping
blk-cgroup: set blkg iostat after percpu stat aggregation
selftests/x86: Add validity check and allow field splitting
selftests/sgx: Treat CC as one argument
crypto: rockchip - ECB does not need IV
audit: log AUDIT_TIME_* records only from rules
EVM: fix the evm= __setup handler return value
crypto: ccree - don't attempt 0 len DMA mappings
crypto: hisilicon/sec - fix the aead software fallback for engine
spi: pxa2xx-pci: Balance reference count for PCI DMA device
hwmon: (pmbus) Add mutex to regulator ops
hwmon: (sch56xx-common) Replace WDOG_ACTIVE with WDOG_HW_RUNNING
nvme: cleanup __nvme_check_ids
nvme: fix the check for duplicate unique identifiers
block: don't delete queue kobject before its children
PM: hibernate: fix __setup handler error handling
PM: suspend: fix return value of __setup handler
spi: spi-zynqmp-gqspi: Handle error for dma_set_mask
hwrng: atmel - disable trng on failure path
crypto: sun8i-ss - call finalize with bh disabled
crypto: sun8i-ce - call finalize with bh disabled
crypto: amlogic - call finalize with bh disabled
crypto: gemini - call finalize with bh disabled
crypto: vmx - add missing dependencies
clocksource/drivers/timer-ti-dm: Fix regression from errata i940 fix
clocksource/drivers/exynos_mct: Refactor resources allocation
clocksource/drivers/exynos_mct: Handle DTS with higher number of interrupts
clocksource/drivers/timer-microchip-pit64b: Use notrace
clocksource/drivers/timer-of: Check return value of of_iomap in timer_of_base_init()
arm64: prevent instrumentation of bp hardening callbacks
KEYS: trusted: Fix trusted key backends when building as module
KEYS: trusted: Avoid calling null function trusted_key_exit
ACPI: APEI: fix return value of __setup handlers
crypto: ccp - ccp_dmaengine_unregister release dma channels
crypto: ccree - Fix use after free in cc_cipher_exit()
hwrng: nomadik - Change clk_disable to clk_disable_unprepare
hwmon: (pmbus) Add Vin unit off handling
clocksource: acpi_pm: fix return value of __setup handler
io_uring: don't check unrelated req->open.how in accept request
io_uring: terminate manual loop iterator loop correctly for non-vecs
watch_queue: Fix NULL dereference in error cleanup
watch_queue: Actually free the watch
f2fs: fix to enable ATGC correctly via gc_idle sysfs interface
sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show_numa
sched/core: Export pelt_thermal_tp
sched/uclamp: Fix iowait boost escaping uclamp restriction
rseq: Remove broken uapi field layout on 32-bit little endian
perf/core: Fix address filter parser for multiple filters
perf/x86/intel/pt: Fix address filter config for 32-bit kernel
sched/fair: Improve consistency of allowed NUMA balance calculations
f2fs: fix missing free nid in f2fs_handle_failed_inode
nfsd: more robust allocation failure handling in nfsd_file_cache_init
sched/cpuacct: Fix charge percpu cpuusage
sched/rt: Plug rt_mutex_setprio() vs push_rt_task() race
f2fs: fix to avoid potential deadlock
btrfs: fix unexpected error path when reflinking an inline extent
f2fs: fix compressed file start atomic write may cause data corruption
selftests, x86: fix how check_cc.sh is being invoked
drivers/base/memory: add memory block to memory group after registration succeeded
kunit: make kunit_test_timeout compatible with comment
pinctrl: samsung: Remove EINT handler for Exynos850 ALIVE and CMGP gpios
media: staging: media: zoran: fix usage of vb2_dma_contig_set_max_seg_size
media: camss: csid-170: fix non-10bit formats
media: camss: csid-170: don't enable unused irqs
media: camss: csid-170: set the right HALT_CMD when disabled
media: camss: vfe-170: fix "VFE halt timeout" error
media: staging: media: imx: imx7-mipi-csis: Make subdev name unique
media: v4l2-mem2mem: Apply DST_QUEUE_OFF_BASE on MMAP buffers across ioctls
media: mtk-vcodec: potential dereference of null pointer
media: imx: imx8mq-mipi-csi2: remove wrong irq config write operation
media: imx: imx8mq-mipi_csi2: fix system resume
media: bttv: fix WARNING regression on tunerless devices
media: atmel: atmel-sama7g5-isc: fix ispck leftover
ASoC: sh: rz-ssi: Drop calling rz_ssi_pio_recv() recursively
ASoC: codecs: Check for error pointer after calling devm_regmap_init_mmio
ASoC: xilinx: xlnx_formatter_pcm: Handle sysclk setting
ASoC: simple-card-utils: Set sysclk on all components
media: coda: Fix missing put_device() call in coda_get_vdoa_data
media: meson: vdec: potential dereference of null pointer
media: hantro: Fix overfill bottom register field name
media: ov6650: Fix set format try processing path
media: v4l: Avoid unaligned access warnings when printing 4cc modifiers
media: ov5648: Don't pack controls struct
media: aspeed: Correct value for h-total-pixels
video: fbdev: matroxfb: set maxvram of vbG200eW to the same as vbG200 to avoid black screen
video: fbdev: controlfb: Fix COMPILE_TEST build
video: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe()
video: fbdev: atmel_lcdfb: fix an error code in atmel_lcdfb_probe()
video: fbdev: fbcvt.c: fix printing in fb_cvt_print_name()
ARM: dts: Fix OpenBMC flash layout label addresses
firmware: qcom: scm: Remove reassignment to desc following initializer
ARM: dts: qcom: ipq4019: fix sleep clock
soc: qcom: rpmpd: Check for null return of devm_kcalloc
soc: qcom: ocmem: Fix missing put_device() call in of_get_ocmem
soc: qcom: aoss: remove spurious IRQF_ONESHOT flags
arm64: dts: qcom: sdm845: fix microphone bias properties and values
arm64: dts: qcom: sm8250: fix PCIe bindings to follow schema
arm64: dts: broadcom: bcm4908: use proper TWD binding
arm64: dts: qcom: sm8150: Correct TCS configuration for apps rsc
arm64: dts: qcom: sm8350: Correct TCS configuration for apps rsc
firmware: ti_sci: Fix compilation failure when CONFIG_TI_SCI_PROTOCOL is not defined
soc: ti: wkup_m3_ipc: Fix IRQ check in wkup_m3_ipc_probe
ARM: dts: sun8i: v3s: Move the csi1 block to follow address order
vsprintf: Fix potential unaligned access
ARM: dts: imx: Add missing LVDS decoder on M53Menlo
media: mexon-ge2d: fixup frames size in registers
media: video/hdmi: handle short reads of hdmi info frame.
media: ti-vpe: cal: Fix a NULL pointer dereference in cal_ctx_v4l2_init_formats()
media: em28xx: initialize refcount before kref_get
media: usb: go7007: s2250-board: fix leak in probe()
media: cedrus: H265: Fix neighbour info buffer size
media: cedrus: h264: Fix neighbour info buffer size
ASoC: codecs: rx-macro: fix accessing compander for aux
ASoC: codecs: rx-macro: fix accessing array out of bounds for enum type
ASoC: codecs: va-macro: fix accessing array out of bounds for enum type
ASoC: codecs: wc938x: fix accessing array out of bounds for enum type
ASoC: codecs: wcd938x: fix kcontrol max values
ASoC: codecs: wcd934x: fix kcontrol max values
ASoC: codecs: wcd934x: fix return value of wcd934x_rx_hph_mode_put
media: v4l2-core: Initialize h264 scaling matrix
media: ov5640: Fix set format, v4l2_mbus_pixelcode not updated
selftests/lkdtm: Add UBSAN config
lib: uninline simple_strntoull() as well
vsprintf: Fix %pK with kptr_restrict == 0
uaccess: fix nios2 and microblaze get_user_8()
ASoC: rt5663: check the return value of devm_kzalloc() in rt5663_parse_dp()
soc: mediatek: pm-domains: Add wakeup capacity support in power domain
mmc: sdhci_am654: Fix the driver data of AM64 SoC
ASoC: ti: davinci-i2s: Add check for clk_enable()
ALSA: spi: Add check for clk_enable()
arm64: dts: ns2: Fix spi-cpol and spi-cpha property
arm64: dts: broadcom: Fix sata nodename
printk: fix return value of printk.devkmsg __setup handler
ASoC: mxs-saif: Handle errors for clk_enable
ASoC: atmel_ssc_dai: Handle errors for clk_enable
ASoC: dwc-i2s: Handle errors for clk_enable
ASoC: soc-compress: prevent the potentially use of null pointer
memory: emif: Add check for setup_interrupts
memory: emif: check the pointer temp in get_device_details()
ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction
arm64: dts: rockchip: Fix SDIO regulator supply properties on rk3399-firefly
m68k: coldfire/device.c: only build for MCF_EDMA when h/w macros are defined
media: stk1160: If start stream fails, return buffers with VB2_BUF_STATE_QUEUED
media: vidtv: Check for null return of vzalloc
ASoC: atmel: Add missing of_node_put() in at91sam9g20ek_audio_probe
ASoC: wm8350: Handle error for wm8350_register_irq
ASoC: fsi: Add check for clk_enable
video: fbdev: omapfb: Add missing of_node_put() in dvic_probe_of
media: saa7134: fix incorrect use to determine if list is empty
ivtv: fix incorrect device_caps for ivtvfb
ASoC: atmel: Fix error handling in snd_proto_probe
ASoC: rockchip: i2s: Fix missing clk_disable_unprepare() in rockchip_i2s_probe
ASoC: SOF: Add missing of_node_put() in imx8m_probe
ASoC: mediatek: use of_device_get_match_data()
ASoC: mediatek: mt8192-mt6359: Fix error handling in mt8192_mt6359_dev_probe
ASoC: rk817: Fix missing clk_disable_unprepare() in rk817_platform_probe
ASoC: dmaengine: do not use a NULL prepare_slave_config() callback
ASoC: mxs: Fix error handling in mxs_sgtl5000_probe
ASoC: fsl_spdif: Disable TX clock when stop
ASoC: imx-es8328: Fix error return code in imx_es8328_probe()
ASoC: SOF: Intel: enable DMI L1 for playback streams
ASoC: msm8916-wcd-digital: Fix missing clk_disable_unprepare() in msm8916_wcd_digital_probe
mmc: davinci_mmc: Handle error for clk_enable
ASoC: atmel: Fix error handling in sam9x5_wm8731_driver_probe
ASoC: msm8916-wcd-analog: Fix error handling in pm8916_wcd_analog_spmi_probe
ASoC: codecs: wcd934x: Add missing of_node_put() in wcd934x_codec_parse_data
ASoC: amd: Fix reference to PCM buffer address
ARM: configs: multi_v5_defconfig: re-enable CONFIG_V4L_PLATFORM_DRIVERS
ARM: configs: multi_v5_defconfig: re-enable DRM_PANEL and FB_xxx
drm/meson: osd_afbcd: Add an exit callback to struct meson_afbcd_ops
drm/meson: Make use of the helper function devm_platform_ioremap_resourcexxx()
drm/meson: split out encoder from meson_dw_hdmi
drm/meson: Fix error handling when afbcd.ops->init fails
drm/bridge: Fix free wrong object in sii8620_init_rcp_input_dev
drm/bridge: Add missing pm_runtime_disable() in __dw_mipi_dsi_probe
drm/bridge: nwl-dsi: Fix PM disable depth imbalance in nwl_dsi_probe
drm: bridge: adv7511: Fix ADV7535 HPD enablement
ath10k: fix memory overwrite of the WoWLAN wakeup packet pattern
drm/v3d/v3d_drv: Check for error num after setting mask
drm/panfrost: Check for error num after setting mask
libbpf: Fix possible NULL pointer dereference when destroying skeleton
bpftool: Only set obj->skeleton on complete success
udmabuf: validate ubuf->pagecount
bpf: Fix UAF due to race between btf_try_get_module and load_module
drm/selftests/test-drm_dp_mst_helper: Fix memory leak in sideband_msg_req_encode_decode
selftests: bpf: Fix bind on used port
Bluetooth: btintel: Fix WBS setting for Intel legacy ROM products
Bluetooth: hci_serdev: call init_rwsem() before p->open()
mtd: onenand: Check for error irq
mtd: rawnand: gpmi: fix controller timings setting
drm/edid: Don't clear formats if using deep color
drm/edid: Split deep color modes between RGB and YUV444
ionic: fix type complaint in ionic_dev_cmd_clean()
ionic: start watchdog after all is setup
ionic: Don't send reset commands if FW isn't running
drm/nouveau/acr: Fix undefined behavior in nvkm_acr_hsfw_load_bl()
drm/amd/display: Fix a NULL pointer dereference in amdgpu_dm_connector_add_common_modes()
drm/amd/pm: return -ENOTSUPP if there is no get_dpm_ultimate_freq function
net: phy: at803x: move page selection fix to config_init
selftests/bpf: Normalize XDP section names in selftests
selftests/bpf/test_xdp_redirect_multi: use temp netns for testing
ath9k_htc: fix uninit value bugs
RDMA/core: Set MR type in ib_reg_user_mr
KVM: PPC: Fix vmx/vsx mixup in mmio emulation
selftests/net: timestamping: Fix bind_phc check
i40e: don't reserve excessive XDP_PACKET_HEADROOM on XSK Rx to skb
i40e: respect metadata on XSK Rx to skb
igc: don't reserve excessive XDP_PACKET_HEADROOM on XSK Rx to skb
ixgbe: pass bi->xdp to ixgbe_construct_skb_zc() directly
ixgbe: don't reserve excessive XDP_PACKET_HEADROOM on XSK Rx to skb
ixgbe: respect metadata on XSK Rx to skb
power: reset: gemini-poweroff: Fix IRQ check in gemini_poweroff_probe
ray_cs: Check ioremap return value
powerpc: dts: t1040rdb: fix ports names for Seville Ethernet switch
KVM: PPC: Book3S HV: Check return value of kvmppc_radix_init
powerpc/perf: Don't use perf_hw_context for trace IMC PMU
mt76: connac: fix sta_rec_wtbl tag len
mt76: mt7915: use proper aid value in mt7915_mcu_wtbl_generic_tlv in sta mode
mt76: mt7915: use proper aid value in mt7915_mcu_sta_basic_tlv
mt76: mt7921: fix a leftover race in runtime-pm
mt76: mt7615: fix a leftover race in runtime-pm
mt76: mt7603: check sta_rates pointer in mt7603_sta_rate_tbl_update
mt76: mt7615: check sta_rates pointer in mt7615_sta_rate_tbl_update
ptp: unregister virtual clocks when unregistering physical clock.
net: dsa: mv88e6xxx: Enable port policy support on 6097
mac80211: Remove a couple of obsolete TODO
mac80211: limit bandwidth in HE capabilities
scripts/dtc: Call pkg-config POSIXly correct
livepatch: Fix build failure on 32 bits processors
net: asix: add proper error handling of usb read errors
i2c: bcm2835: Use platform_get_irq() to get the interrupt
i2c: bcm2835: Fix the error handling in 'bcm2835_i2c_probe()'
mtd: mchp23k256: Add SPI ID table
mtd: mchp48l640: Add SPI ID table
igc: avoid kernel warning when changing RX ring parameters
igb: refactor XDP registration
PCI: aardvark: Fix reading MSI interrupt number
PCI: aardvark: Fix reading PCI_EXP_RTSTA_PME bit on emulated bridge
RDMA/rxe: Check the last packet by RXE_END_MASK
libbpf: Fix signedness bug in btf_dump_array_data()
cxl/core: Fix cxl_probe_component_regs() error message
cxl/regs: Fix size of CXL Capability Header Register
net:enetc: allocate CBD ring data memory using DMA coherent methods
libbpf: Fix compilation warning due to mismatched printf format
drm/bridge: dw-hdmi: use safe format when first in bridge chain
libbpf: Use dynamically allocated buffer when receiving netlink messages
power: supply: ab8500: Fix memory leak in ab8500_fg_sysfs_init
HID: i2c-hid: fix GET/SET_REPORT for unnumbered reports
iommu/ipmmu-vmsa: Check for error num after setting mask
drm/bridge: anx7625: Fix overflow issue on reading EDID
bpftool: Fix the error when lookup in no-btf maps
drm/amd/pm: enable pm sysfs write for one VF mode
drm/amd/display: Add affected crtcs to atomic state for dsc mst unplug
libbpf: Fix memleak in libbpf_netlink_recv()
IB/cma: Allow XRC INI QPs to set their local ACK timeout
dax: make sure inodes are flushed before destroy cache
selftests: mptcp: add csum mib check for mptcp_connect
iwlwifi: mvm: Don't call iwl_mvm_sta_from_mac80211() with NULL sta
iwlwifi: mvm: don't iterate unadded vifs when handling FW SMPS req
iwlwifi: mvm: align locking in D3 test debugfs
iwlwifi: yoyo: remove DBGI_SRAM address reset writing
iwlwifi: Fix -EIO error code that is never returned
iwlwifi: mvm: Fix an error code in iwl_mvm_up()
mtd: rawnand: pl353: Set the nand chip node as the flash node
drm/msm/dp: populate connector of struct dp_panel
drm/msm/dp: stop link training after link training 2 failed
drm/msm/dp: always add fail-safe mode into connector mode list
drm/msm/dsi: Use "ref" fw clock instead of global name for VCO parent
drm/msm/dsi/phy: fix 7nm v4.0 settings for C-PHY mode
drm/msm/dpu: add DSPP blocks teardown
drm/msm/dpu: fix dp audio condition
dm crypt: fix get_key_size compiler warning if !CONFIG_KEYS
vfio/pci: fix memory leak during D3hot to D0 transition
vfio/pci: wake-up devices around reset functions
scsi: fnic: Fix a tracing statement
scsi: pm8001: Fix command initialization in pm80XX_send_read_log()
scsi: pm8001: Fix command initialization in pm8001_chip_ssp_tm_req()
scsi: pm8001: Fix payload initialization in pm80xx_set_thermal_config()
scsi: pm8001: Fix le32 values handling in pm80xx_set_sas_protocol_timer_config()
scsi: pm8001: Fix payload initialization in pm80xx_encrypt_update()
scsi: pm8001: Fix le32 values handling in pm80xx_chip_ssp_io_req()
scsi: pm8001: Fix le32 values handling in pm80xx_chip_sata_req()
scsi: pm8001: Fix NCQ NON DATA command task initialization
scsi: pm8001: Fix NCQ NON DATA command completion handling
scsi: pm8001: Fix abort all task initialization
RDMA/mlx5: Fix the flow of a miss in the allocation of a cache ODP MR
drm/amd/display: Remove vupdate_int_entry definition
TOMOYO: fix __setup handlers return values
power: supply: sbs-charger: Don't cancel work that is not initialized
ext2: correct max file size computing
drm/tegra: Fix reference leak in tegra_dsi_ganged_probe
power: supply: bq24190_charger: Fix bq24190_vbus_is_enabled() wrong false return
scsi: hisi_sas: Change permission of parameter prot_mask
drm/bridge: cdns-dsi: Make sure to to create proper aliases for dt
bpf, arm64: Call build_prologue() first in first JIT pass
bpf, arm64: Feed byte-offset into bpf line info
xsk: Fix race at socket teardown
RDMA/irdma: Fix netdev notifications for vlan's
RDMA/irdma: Fix Passthrough mode in VM
RDMA/irdma: Remove incorrect masking of PD
gpu: host1x: Fix a memory leak in 'host1x_remove()'
libbpf: Skip forward declaration when counting duplicated type names
powerpc/mm/numa: skip NUMA_NO_NODE onlining in parse_numa_properties()
powerpc/Makefile: Don't pass -mcpu=powerpc64 when building 32-bit
KVM: x86: Fix emulation in writing cr8
KVM: x86/emulator: Defer not-present segment check in __load_segment_descriptor()
hv_balloon: rate-limit "Unhandled message" warning
i2c: xiic: Make bus names unique
power: supply: wm8350-power: Handle error for wm8350_register_irq
power: supply: wm8350-power: Add missing free in free_charger_irq
IB/hfi1: Allow larger MTU without AIP
RDMA/core: Fix ib_qp_usecnt_dec() called when error
PCI: Reduce warnings on possible RW1C corruption
net: axienet: fix RX ring refill allocation failure handling
drm/msm/a6xx: Fix missing ARRAY_SIZE() check
mips: DEC: honor CONFIG_MIPS_FP_SUPPORT=n
MIPS: Sanitise Cavium switch cases in TLB handler synthesizers
powerpc/sysdev: fix incorrect use to determine if list is empty
powerpc/64s: Don't use DSISR for SLB faults
mfd: mc13xxx: Add check for mc13xxx_irq_request
libbpf: Unmap rings when umem deleted
selftests/bpf: Make test_lwt_ip_encap more stable and faster
platform/x86: huawei-wmi: check the return value of device_create_file()
scsi: mpt3sas: Fix incorrect 4GB boundary check
powerpc: 8xx: fix a return value error in mpc8xx_pic_init
vxcan: enable local echo for sent CAN frames
ath10k: Fix error handling in ath10k_setup_msa_resources
mips: cdmm: Fix refcount leak in mips_cdmm_phys_base
MIPS: RB532: fix return value of __setup handler
MIPS: pgalloc: fix memory leak caused by pgd_free()
mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init
power: ab8500_chargalg: Use CLOCK_MONOTONIC
RDMA/irdma: Prevent some integer underflows
Revert "RDMA/core: Fix ib_qp_usecnt_dec() called when error"
RDMA/mlx5: Fix memory leak in error flow for subscribe event routine
bpf, sockmap: Fix memleak in sk_psock_queue_msg
bpf, sockmap: Fix memleak in tcp_bpf_sendmsg while sk msg is full
bpf, sockmap: Fix more uncharged while msg has more_data
bpf, sockmap: Fix double uncharge the mem of sk_msg
samples/bpf, xdpsock: Fix race when running for fix duration of time
USB: storage: ums-realtek: fix error code in rts51x_read_mem()
drm/i915/display: Fix HPD short pulse handling for eDP
netfilter: flowtable: Fix QinQ and pppoe support for inet table
mt76: mt7921: fix mt7921_queues_acq implementation
can: isotp: sanitize CAN ID checks in isotp_bind()
can: isotp: return -EADDRNOTAVAIL when reading from unbound socket
can: isotp: support MSG_TRUNC flag when reading from socket
bareudp: use ipv6_mod_enabled to check if IPv6 enabled
ibmvnic: fix race between xmit and reset
af_unix: Fix some data-races around unix_sk(sk)->oob_skb.
selftests/bpf: Fix error reporting from sock_fields programs
Bluetooth: hci_uart: add missing NULL check in h5_enqueue
Bluetooth: call hci_le_conn_failed with hdev lock in hci_le_conn_failed
Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt
ipv4: Fix route lookups when handling ICMP redirects and PMTU updates
af_netlink: Fix shift out of bounds in group mask calculation
i2c: meson: Fix wrong speed use from probe
netfilter: conntrack: Add and use nf_ct_set_auto_assign_helper_warned()
i2c: mux: demux-pinctrl: do not deactivate a master that is not active
powerpc/pseries: Fix use after free in remove_phb_dynamic()
selftests/bpf/test_lirc_mode2.sh: Exit with proper code
PCI: Avoid broken MSI on SB600 USB devices
net: bcmgenet: Use stronger register read/writes to assure ordering
tcp: ensure PMTU updates are processed during fastopen
openvswitch: always update flow key after nat
net: dsa: fix panic on shutdown if multi-chip tree failed to probe
tipc: fix the timer expires after interval 100ms
mfd: asic3: Add missing iounmap() on error asic3_mfd_probe
ice: fix 'scheduling while atomic' on aux critical err interrupt
ice: don't allow to run ice_send_event_to_aux() in atomic ctx
drivers: ethernet: cpsw: fix panic when interrupt coaleceing is set via ethtool
kernel/resource: fix kfree() of bootmem memory again
staging: r8188eu: convert DBG_88E_LEVEL call in hal/rtl8188e_hal_init.c
staging: r8188eu: release_firmware is not called if allocation fails
mxser: fix xmit_buf leak in activate when LSR == 0xff
fsi: scom: Fix error handling
fsi: scom: Remove retries in indirect scoms
pwm: lpc18xx-sct: Initialize driver data and hardware before pwmchip_add()
pps: clients: gpio: Propagate return value from pps_gpio_probe
fsi: Aspeed: Fix a potential double free
misc: alcor_pci: Fix an error handling path
cpufreq: qcom-cpufreq-nvmem: fix reading of PVS Valid fuse
soundwire: intel: fix wrong register name in intel_shim_wake
clk: qcom: ipq8074: fix PCI-E clock oops
dmaengine: idxd: check GENCAP config support for gencfg register
dmaengine: idxd: change bandwidth token to read buffers
dmaengine: idxd: restore traffic class defaults after wq reset
iio: mma8452: Fix probe failing when an i2c_device_id is used
serial: 8250_aspeed_vuart: add PORT_ASPEED_VUART port type
staging:iio:adc:ad7280a: Fix handing of device address bit reversing.
pinctrl: renesas: r8a77470: Reduce size for narrow VIN1 channel
pinctrl: renesas: checker: Fix miscalculation of number of states
clk: qcom: ipq8074: Use floor ops for SDCC1 clock
phy: dphy: Correct lpx parameter and its derivatives(ta_{get,go,sure})
phy: phy-brcm-usb: fixup BCM4908 support
serial: 8250_mid: Balance reference count for PCI DMA device
serial: 8250_lpss: Balance reference count for PCI DMA device
NFS: Use of mapping_set_error() results in spurious errors
serial: 8250: Fix race condition in RTS-after-send handling
iio: adc: Add check for devm_request_threaded_irq
habanalabs: Add check for pci_enable_device
NFS: Return valid errors from nfs2/3_decode_dirent()
staging: r8188eu: fix endless loop in recv_func
dma-debug: fix return value of __setup handlers
clk: imx7d: Remove audio_mclk_root_clk
clk: imx: off by one in imx_lpcg_parse_clks_from_dt()
clk: at91: sama7g5: fix parents of PDMCs' GCLK
clk: qcom: clk-rcg2: Update logic to calculate D value for RCG
clk: qcom: clk-rcg2: Update the frac table for pixel clock
dmaengine: hisi_dma: fix MSI allocate fail when reload hisi_dma
remoteproc: qcom: Fix missing of_node_put in adsp_alloc_memory_region
remoteproc: qcom_wcnss: Add missing of_node_put() in wcnss_alloc_memory_region
remoteproc: qcom_q6v5_mss: Fix some leaks in q6v5_alloc_memory_region
nvdimm/region: Fix default alignment for small regions
clk: actions: Terminate clk_div_table with sentinel element
clk: loongson1: Terminate clk_div_table with sentinel element
clk: hisilicon: Terminate clk_div_table with sentinel element
clk: clps711x: Terminate clk_div_table with sentinel element
clk: Fix clk_hw_get_clk() when dev is NULL
clk: tegra: tegra124-emc: Fix missing put_device() call in emc_ensure_emc_driver
mailbox: imx: fix crash in resume on i.mx8ulp
NFS: remove unneeded check in decode_devicenotify_args()
staging: mt7621-dts: fix LEDs and pinctrl on GB-PC1 devicetree
staging: mt7621-dts: fix formatting
staging: mt7621-dts: fix pinctrl properties for ethernet
staging: mt7621-dts: fix GB-PC2 devicetree
pinctrl: mediatek: Fix missing of_node_put() in mtk_pctrl_init
pinctrl: mediatek: paris: Fix PIN_CONFIG_BIAS_* readback
pinctrl: mediatek: paris: Fix "argument" argument type for mtk_pinconf_get()
pinctrl: mediatek: paris: Fix pingroup pin config state readback
pinctrl: mediatek: paris: Skip custom extra pin config dump for virtual GPIOs
pinctrl: microchip sgpio: use reset driver
pinctrl: microchip-sgpio: lock RMW access
pinctrl: nomadik: Add missing of_node_put() in nmk_pinctrl_probe
pinctrl/rockchip: Add missing of_node_put() in rockchip_pinctrl_probe
tty: hvc: fix return value of __setup handler
kgdboc: fix return value of __setup handler
serial: 8250: fix XOFF/XON sending when DMA is used
virt: acrn: obtain pa from VMA with PFNMAP flag
virt: acrn: fix a memory leak in acrn_dev_ioctl()
kgdbts: fix return value of __setup handler
firmware: google: Properly state IOMEM dependency
driver core: dd: fix return value of __setup handler
jfs: fix divide error in dbNextAG
netfilter: nf_conntrack_tcp: preserve liberal flag in tcp options
SUNRPC don't resend a task on an offlined transport
NFSv4.1: don't retry BIND_CONN_TO_SESSION on session error
kdb: Fix the putarea helper function
perf stat: Fix forked applications enablement of counters
clk: qcom: gcc-msm8994: Fix gpll4 width
vsock/virtio: initialize vdev->priv before using VQs
vsock/virtio: read the negotiated features before using VQs
vsock/virtio: enable VQs early on probe
clk: Initialize orphan req_rate
xen: fix is_xen_pmu()
net: enetc: report software timestamping via SO_TIMESTAMPING
net: hns3: fix bug when PF set the duplicate MAC address for VFs
net: hns3: fix port base vlan add fail when concurrent with reset
net: hns3: add vlan list lock to protect vlan list
net: hns3: format the output of the MAC address
net: hns3: refine the process when PF set VF VLAN
net: phy: broadcom: Fix brcm_fet_config_init()
selftests: test_vxlan_under_vrf: Fix broken test case
NFS: Don't loop forever in nfs_do_recoalesce()
net: hns3: clean residual vf config after disable sriov
net: sparx5: depends on PTP_1588_CLOCK_OPTIONAL
qlcnic: dcb: default to returning -EOPNOTSUPP
net/x25: Fix null-ptr-deref caused by x25_disconnect
net: sparx5: switchdev: fix possible NULL pointer dereference
octeontx2-af: initialize action variable
net: prefer nf_ct_put instead of nf_conntrack_put
net/sched: act_ct: fix ref leak when switching zones
NFSv4/pNFS: Fix another issue with a list iterator pointing to the head
net: dsa: bcm_sf2_cfp: fix an incorrect NULL check on list iterator
fs: fd tables have to be multiples of BITS_PER_LONG
lib/test: use after free in register_test_dev_kmod()
fs: fix fd table size alignment properly
LSM: general protection fault in legacy_parse_param
regulator: rpi-panel: Handle I2C errors/timing to the Atmel
crypto: hisilicon/qm - cleanup warning in qm_vf_read_qos
gcc-plugins/stackleak: Exactly match strings instead of prefixes
pinctrl: npcm: Fix broken references to chip->parent_device
rcu: Mark writes to the rcu_segcblist structure's ->flags field
block/bfq_wf2q: correct weight to ioprio
crypto: xts - Add softdep on ecb
crypto: hisilicon/sec - not need to enable sm4 extra mode at HW V3
block, bfq: don't move oom_bfqq
selinux: use correct type for context length
arm64: module: remove (NOLOAD) from linker script
selinux: allow FIOCLEX and FIONCLEX with policy capability
loop: use sysfs_emit() in the sysfs xxx show()
Fix incorrect type in assignment of ipv6 port for audit
irqchip/qcom-pdc: Fix broken locking
irqchip/nvic: Release nvic_base upon failure
fs/binfmt_elf: Fix AT_PHDR for unusual ELF files
bfq: fix use-after-free in bfq_dispatch_request
ACPICA: Avoid walking the ACPI Namespace if it is not there
lib/raid6/test/Makefile: Use $(pound) instead of \# for Make 4.3
Revert "Revert "block, bfq: honor already-setup queue merges""
ACPI/APEI: Limit printable size of BERT table data
PM: core: keep irq flags in device_pm_check_callbacks()
parisc: Fix handling off probe non-access faults
nvme-tcp: lockdep: annotate in-kernel sockets
spi: tegra20: Use of_device_get_match_data()
atomics: Fix atomic64_{read_acquire,set_release} fallbacks
locking/lockdep: Iterate lock_classes directly when reading lockdep files
ext4: correct cluster len and clusters changed accounting in ext4_mb_mark_bb
ext4: fix ext4_mb_mark_bb() with flex_bg with fast_commit
sched/tracing: Report TASK_RTLOCK_WAIT tasks as TASK_UNINTERRUPTIBLE
ext4: don't BUG if someone dirty pages without asking ext4 first
f2fs: fix to do sanity check on curseg->alloc_type
NFSD: Fix nfsd_breaker_owns_lease() return values
f2fs: don't get FREEZE lock in f2fs_evict_inode in frozen fs
btrfs: harden identification of a stale device
btrfs: make search_csum_tree return 0 if we get -EFBIG
f2fs: use spin_lock to avoid hang
f2fs: compress: fix to print raw data size in error path of lz4 decompression
Adjust cifssb maximum read size
ntfs: add sanity check on allocation size
media: staging: media: zoran: move videodev alloc
media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com
media: staging: media: zoran: fix various V4L2 compliance errors
media: atmel: atmel-isc-base: report frame sizes as full supported range
media: ir_toy: free before error exiting
ASoC: sh: rz-ssi: Make the data structures available before registering the handlers
ASoC: SOF: Intel: match sdw version on link_slaves_found
media: imx-jpeg: Prevent decoding NV12M jpegs into single-planar buffers
media: iommu/mediatek-v1: Free the existed fwspec if the master dev already has
media: iommu/mediatek: Return ENODEV if the device is NULL
media: iommu/mediatek: Add device_link between the consumer and the larb devices
video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow
video: fbdev: w100fb: Reset global state
video: fbdev: cirrusfb: check pixclock to avoid divide by zero
video: fbdev: omapfb: acx565akm: replace snprintf with sysfs_emit
ARM: dts: qcom: fix gic_irq_domain_translate warnings for msm8960
ARM: dts: bcm2837: Add the missing L1/L2 cache information
ASoC: madera: Add dependencies on MFD
media: atomisp_gmin_platform: Add DMI quirk to not turn AXP ELDO2 regulator off on some boards
media: atomisp: fix dummy_ptr check to avoid duplicate active_bo
ARM: ftrace: avoid redundant loads or clobbering IP
ARM: dts: imx7: Use audio_mclk_post_div instead audio_mclk_root_clk
arm64: defconfig: build imx-sdma as a module
video: fbdev: omapfb: panel-dsi-cm: Use sysfs_emit() instead of snprintf()
video: fbdev: omapfb: panel-tpo-td043mtea1: Use sysfs_emit() instead of snprintf()
video: fbdev: udlfb: replace snprintf in show functions with sysfs_emit
ARM: dts: bcm2711: Add the missing L1/L2 cache information
ASoC: soc-core: skip zero num_dai component in searching dai name
media: imx-jpeg: fix a bug of accessing array out of bounds
media: cx88-mpeg: clear interrupt status register before streaming video
uaccess: fix type mismatch warnings from access_ok()
lib/test_lockup: fix kernel pointer check for separate address spaces
ARM: tegra: tamonten: Fix I2C3 pad setting
ARM: mmp: Fix failure to remove sram device
ASoC: amd: vg: fix for pm resume callback sequence
video: fbdev: sm712fb: Fix crash in smtcfb_write()
media: i2c: ov5648: Fix lockdep error
media: Revert "media: em28xx: add missing em28xx_close_extension"
media: hdpvr: initialize dev->worker at hdpvr_register_videodev
ASoC: Intel: sof_sdw: fix quirks for 2022 HP Spectre x360 13"
tracing: Have TRACE_DEFINE_ENUM affect trace event types as well
mmc: host: Return an error when ->enable_sdio_irq() ops is missing
media: atomisp: fix bad usage at error handling logic
ALSA: hda/realtek: Add alc256-samsung-headphone fixup
KVM: x86: Reinitialize context if host userspace toggles EFER.LME
KVM: x86/mmu: Move "invalid" check out of kvm_tdp_mmu_get_root()
KVM: x86/mmu: Zap _all_ roots when unmapping gfn range in TDP MMU
KVM: x86/mmu: Check for present SPTE when clearing dirty bit in TDP MMU
KVM: x86: hyper-v: Drop redundant 'ex' parameter from kvm_hv_send_ipi()
KVM: x86: hyper-v: Drop redundant 'ex' parameter from kvm_hv_flush_tlb()
KVM: x86: hyper-v: Fix the maximum number of sparse banks for XMM fast TLB flush hypercalls
KVM: x86: hyper-v: HVCALL_SEND_IPI_EX is an XMM fast hypercall
powerpc/kasan: Fix early region not updated correctly
powerpc/lib/sstep: Fix 'sthcx' instruction
powerpc/lib/sstep: Fix build errors with newer binutils
powerpc: Add set_memory_{p/np}() and remove set_memory_attr()
powerpc: Fix build errors with newer binutils
drm/dp: Fix off-by-one in register cache size
drm/i915: Treat SAGV block time 0 as SAGV disabled
drm/i915: Fix PSF GV point mask when SAGV is not possible
drm/i915: Reject unsupported TMDS rates on ICL+
scsi: qla2xxx: Refactor asynchronous command initialization
scsi: qla2xxx: Implement ref count for SRB
scsi: qla2xxx: Fix stuck session in gpdb
scsi: qla2xxx: Fix warning message due to adisc being flushed
scsi: qla2xxx: Fix scheduling while atomic
scsi: qla2xxx: Fix premature hw access after PCI error
scsi: qla2xxx: Fix wrong FDMI data for 64G adapter
scsi: qla2xxx: Fix warning for missing error code
scsi: qla2xxx: Fix device reconnect in loop topology
scsi: qla2xxx: edif: Fix clang warning
scsi: qla2xxx: Fix T10 PI tag escape and IP guard options for 28XX adapters
scsi: qla2xxx: Add devids and conditionals for 28xx
scsi: qla2xxx: Check for firmware dump already collected
scsi: qla2xxx: Suppress a kernel complaint in qla_create_qpair()
scsi: qla2xxx: Fix disk failure to rediscover
scsi: qla2xxx: Fix incorrect reporting of task management failure
scsi: qla2xxx: Fix hang due to session stuck
scsi: qla2xxx: Fix missed DMA unmap for NVMe ls requests
scsi: qla2xxx: Fix N2N inconsistent PLOGI
scsi: qla2xxx: Fix stuck session of PRLI reject
scsi: qla2xxx: Reduce false trigger to login
scsi: qla2xxx: Use correct feature type field during RFF_ID processing
platform: chrome: Split trace include file
KVM: x86: Check lapic_in_kernel() before attempting to set a SynIC irq
KVM: x86: Avoid theoretical NULL pointer dereference in kvm_irq_delivery_to_apic_fast()
KVM: x86: Forbid VMM to set SYNIC/STIMER MSRs when SynIC wasn't activated
KVM: Prevent module exit until all VMs are freed
KVM: x86: fix sending PV IPI
KVM: SVM: fix panic on out-of-bounds guest IRQ
ubifs: rename_whiteout: Fix double free for whiteout_ui->data
ubifs: Fix deadlock in concurrent rename whiteout and inode writeback
ubifs: Add missing iput if do_tmpfile() failed in rename whiteout
ubifs: Rename whiteout atomically
ubifs: Fix 'ui->dirty' race between do_tmpfile() and writeback work
ubifs: Rectify space amount budget for mkdir/tmpfile operations
ubifs: setflags: Make dirtied_ino_d 8 bytes aligned
ubifs: Fix read out-of-bounds in ubifs_wbuf_write_nolock()
ubifs: Fix to add refcount once page is set private
ubifs: rename_whiteout: correct old_dir size computing
nvme: allow duplicate NSIDs for private namespaces
nvme: fix the read-only state for zoned namespaces with unsupposed features
wireguard: queueing: use CFI-safe ptr_ring cleanup function
wireguard: socket: free skb in send6 when ipv6 is disabled
wireguard: socket: ignore v6 endpoints when ipv6 is disabled
XArray: Fix xas_create_range() when multi-order entry present
can: mcba_usb: mcba_usb_start_xmit(): fix double dev_kfree_skb in error path
can: mcba_usb: properly check endpoint type
can: mcp251xfd: mcp251xfd_register_get_dev_id(): fix return of error value
XArray: Update the LRU list in xas_split()
modpost: restore the warning message for missing symbol versions
rtc: check if __rtc_read_time was successful
gfs2: gfs2_setattr_size error path fix
gfs2: Make sure FITRIM minlen is rounded up to fs block size
net: hns3: fix the concurrency between functions reading debugfs
net: hns3: fix software vlan talbe of vlan 0 inconsistent with hardware
rxrpc: fix some null-ptr-deref bugs in server_key.c
rxrpc: Fix call timer start racing with call destruction
mailbox: imx: fix wakeup failure from freeze mode
crypto: arm/aes-neonbs-cbc - Select generic cbc and aes
watch_queue: Free the page array when watch_queue is dismantled
pinctrl: pinconf-generic: Print arguments for bias-pull-*
watchdog: rti-wdt: Add missing pm_runtime_disable() in probe function
net: sparx5: uses, depends on BRIDGE or !BRIDGE
pinctrl: nuvoton: npcm7xx: Rename DS() macro to DSTR()
pinctrl: nuvoton: npcm7xx: Use %zu printk format for ARRAY_SIZE()
ASoC: mediatek: mt6358: add missing EXPORT_SYMBOLs
ubi: Fix race condition between ctrl_cdev_ioctl and ubi_cdev_ioctl
ARM: iop32x: offset IRQ numbers by 1
block: Fix the maximum minor value is blk_alloc_ext_minor()
io_uring: fix memory leak of uid in files registration
riscv module: remove (NOLOAD)
ACPI: CPPC: Avoid out of bounds access when parsing _CPC data
vhost: handle error while adding split ranges to iotlb
spi: Fix Tegra QSPI example
platform/chrome: cros_ec_typec: Check for EC device
can: isotp: restore accidentally removed MSG_PEEK feature
proc: bootconfig: Add null pointer check
drm/connector: Fix typo in documentation
scsi: qla2xxx: Add qla2x00_async_done() for async routines
staging: mt7621-dts: fix pinctrl-0 items to be size-1 items on ethernet
arm64: mm: Drop 'const' from conditional arm64_dma_phys_limit definition
ASoC: soc-compress: Change the check for codec_dai
Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""
tracing: Have type enum modifications copy the strings
net: add skb_set_end_offset() helper
net: preserve skb_end_offset() in skb_unclone_keeptruesize()
mm/mmap: return 1 from stack_guard_gap __setup() handler
ARM: 9187/1: JIVE: fix return value of __setup handler
mm/memcontrol: return 1 from cgroup.memory __setup() handler
mm/usercopy: return 1 from hardened_usercopy __setup() handler
af_unix: Support POLLPRI for OOB.
bpf: Adjust BPF stack helper functions to accommodate skip > 0
bpf: Fix comment for helper bpf_current_task_under_cgroup()
mmc: rtsx: Use pm_runtime_{get,put}() to handle runtime PM
dt-bindings: mtd: nand-controller: Fix the reg property description
dt-bindings: mtd: nand-controller: Fix a comment in the examples
dt-bindings: spi: mxic: The interrupt property is not mandatory
dt-bindings: memory: mtk-smi: No need mediatek,larb-id for mt8167
dt-bindings: pinctrl: pinctrl-microchip-sgpio: Fix example
ubi: fastmap: Return error code if memory allocation fails in add_aeb()
ASoC: SOF: Intel: Fix build error without SND_SOC_SOF_PCI_DEV
ASoC: topology: Allow TLV control to be either read or write
perf vendor events: Update metrics for SkyLake Server
media: ov6650: Add try support to selection API operations
media: ov6650: Fix crop rectangle affected by set format
spi: mediatek: support tick_delay without enhance_timing
ARM: dts: spear1340: Update serial node properties
ARM: dts: spear13xx: Update SPI dma properties
arm64: dts: ls1043a: Update i2c dma properties
arm64: dts: ls1046a: Update i2c node dma properties
um: Fix uml_mconsole stop/go
docs: sysctl/kernel: add missing bit to panic_print
openvswitch: Fixed nd target mask field in the flow dump.
torture: Make torture.sh help message match reality
n64cart: convert bi_disk to bi_bdev->bd_disk fix build
mmc: rtsx: Let MMC core handle runtime PM
mmc: rtsx: Fix build errors/warnings for unused variable
KVM: x86/mmu: do compare-and-exchange of gPTE via the user address
iommu/dma: Skip extra sync during unmap w/swiotlb
iommu/dma: Fold _swiotlb helpers into callers
iommu/dma: Check CONFIG_SWIOTLB more broadly
swiotlb: Support aligned swiotlb buffers
iommu/dma: Account for min_align_mask w/swiotlb
coredump: Snapshot the vmas in do_coredump
coredump: Remove the WARN_ON in dump_vma_snapshot
coredump/elf: Pass coredump_params into fill_note_info
coredump: Use the vma snapshot in fill_files_note
PCI: xgene: Revert "PCI: xgene: Use inbound resources for setup"
Linux 5.15.33
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Id62bd8a22d0bfa7c2096539d253ffce804bed017
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Michael Ellerman
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4a852ff9b7 |
powerpc/64s: Don't use DSISR for SLB faults
[ Upstream commit d4679ac8ea2e5078704aa1c026db36580cc1bf9a ] Since commit |
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Michel Lespinasse
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7d6787088d |
BACKPORT: FROMLIST: mm: enable speculative fault handling for supported file types.
Introduce vma_can_speculate(), which allows speculative handling for VMAs mapping supported file types. From do_handle_mm_fault(), speculative handling will follow through __handle_mm_fault(), handle_pte_fault() and do_fault(). At this point, we expect speculative faults to continue through one of: - do_read_fault(), fully implemented; - do_cow_fault(), which might abort if missing anon vmas, - do_shared_fault(), not implemented yet (would require ->page_mkwrite() changes). vma_can_speculate() provides an early abort for the do_shared_fault() case, limiting the time spent on trying that unimplemented case. Signed-off-by: Michel Lespinasse <michel@lespinasse.org> Link: https://lore.kernel.org/all/20210407014502.24091-31-michel@lespinasse.org/ Conflicts: include/linux/vm_event_item.h mm/vmstat.c 1. SPF_ATTEMPT_FILE is taken from https://lore.kernel.org/all/20210407014502.24091-36-michel@lespinasse.org/ since the patch posted upstream at the time had a different structure with stats for anonymouse and file-backed pagefaults introduced in a separate patch. Bug: 161210518 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: I3a28af63b41b649f02f8b73d53f6494ad114ee5a |
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Michel Lespinasse
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fea117c94a |
FROMLIST: powerpc/mm: attempt speculative mm faults first
Attempt speculative mm fault handling first, and fall back to the existing (non-speculative) code if that fails. This follows the lines of the x86 speculative fault handling code, but with some minor arch differences such as the way that the access_pkey_error case is handled Signed-off-by: Michel Lespinasse <michel@lespinasse.org> Link: https://lore.kernel.org/all/20220128131006.67712-36-michel@lespinasse.org/ Bug: 161210518 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: Ic12bc3d5070d1502fc5df182a19c92b4a8d59723 |
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Christophe Leroy
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cd5d5e602f |
powerpc/mm: Fix lockup on kernel exec fault
The powerpc kernel is not prepared to handle exec faults from kernel. Especially, the function is_exec_fault() will return 'false' when an exec fault is taken by kernel, because the check is based on reading current->thread.regs->trap which contains the trap from user. For instance, when provoking a LKDTM EXEC_USERSPACE test, current->thread.regs->trap is set to SYSCALL trap (0xc00), and the fault taken by the kernel is not seen as an exec fault by set_access_flags_filter(). Commit |
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Xiongwei Song
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7153d4bf0b |
powerpc/traps: Enhance readability for trap types
Define macros to list ppc interrupt types in interttupt.h, replace the reference of the trap hex values with these macros. Referred the hex numbers in arch/powerpc/kernel/exceptions-64e.S, arch/powerpc/kernel/exceptions-64s.S, arch/powerpc/kernel/head_*.S, arch/powerpc/kernel/head_booke.h and arch/powerpc/include/asm/kvm_asm.h. Signed-off-by: Xiongwei Song <sxwjean@gmail.com> [mpe: Resolve conflicts in nmi_disables_ftrace(), fix 40x build] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1618398033-13025-1-git-send-email-sxwjean@me.com |
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Nicholas Piggin
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c45ba4f44f |
powerpc: clean up do_page_fault
search_exception_tables + __bad_page_fault can be substituted with bad_page_fault, do_page_fault no longer needs to return a value to asm for any sub-architecture, and __bad_page_fault can be static. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210316104206.407354-10-npiggin@gmail.com |
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Nicholas Piggin
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d738ee8d56 |
powerpc/64e/interrupt: handle bad_page_fault in C
With non-volatile registers saved on interrupt, bad_page_fault can now be called by do_page_fault. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210316104206.407354-9-npiggin@gmail.com |
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Christophe Leroy
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98c26a7275 |
powerpc/mm: Remove unneeded #ifdef CONFIG_PPC_MEM_KEYS
In fault.c, #ifdef CONFIG_PPC_MEM_KEYS is not needed because all functions are always defined, and arch_vma_access_permitted() always returns true when CONFIG_PPC_MEM_KEYS is not defined so access_pkey_error() will return false so bad_access_pkey() will never be called. Include linux/pkeys.h to get a definition of vma_pkeys() for bad_access_pkey(). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/8038392f38d81f2ad169347efac29146f553b238.1615819955.git.christophe.leroy@csgroup.eu |
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Christophe Leroy
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af6f2ce84b |
powerpc/32: Call bad_page_fault() from do_page_fault()
Now that non volatile registers are saved at all time, no need to split bad_page_fault() out of do_page_fault(). Remove handle_page_fault() and use do_page_fault() directly. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/cfb95be8863204cc2bf45a22ea44dd1d0dc16b7f.1615552867.git.christophe.leroy@csgroup.eu |
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Christophe Leroy
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90cbac0e99 |
powerpc: Enable KFENCE for PPC32
Add architecture specific implementation details for KFENCE and enable KFENCE for the ppc32 architecture. In particular, this implements the required interface in <asm/kfence.h>. KFENCE requires that attributes for pages from its memory pool can individually be set. Therefore, force the Read/Write linear map to be mapped at page granularity. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Marco Elver <elver@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/8dfe1bd2abde26337c1d8c1ad0acfcc82185e0d5.1614868445.git.christophe.leroy@csgroup.eu |
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Nicholas Piggin
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e4bb64c7a4 |
powerpc: remove interrupt handler functions from the noinstr section
The allyesconfig ppc64 kernel fails to link with relocations unable to fit after commit |
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Nicholas Piggin
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540d4d34be |
powerpc/64: context tracking move to interrupt wrappers
This moves exception_enter/exit calls to wrapper functions for synchronous interrupts. More interrupt handlers are covered by this than previously. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-33-npiggin@gmail.com |
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Nicholas Piggin
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a008f8f9fd |
powerpc/64s/hash: improve context tracking of hash faults
This moves the 64s/hash context tracking from hash_page_mm() to __do_hash_fault(), so it's no longer called by OCXL / SPU accelerators, which was certainly the wrong thing to be doing, because those callers are not low level interrupt handlers, so should have entered a kernel context tracking already. Then remain in kernel context for the duration of the fault, rather than enter/exit for the hash fault then enter/exit for the page fault, which is pointless. Even still, calling exception_enter/exit in __do_hash_fault seems questionable because that's touching per-cpu variables, tracing, etc., which might have been interrupted by this hash fault or themselves cause hash faults. But maybe I miss something because hash_page_mm very deliberately calls trace_hash_fault too, for example. So for now go with it, it's no worse than before, in this regard. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-32-npiggin@gmail.com |
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Nicholas Piggin
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e6f8a6c86c |
powerpc: add interrupt_cond_local_irq_enable helper
Simple helper for synchronous interrupt handlers (i.e., process-context) to enable interrupts if it was taken in an interrupts-enabled context. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-30-npiggin@gmail.com |
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Nicholas Piggin
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3a96570ffc |
powerpc: convert interrupt handlers to use wrappers
Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-29-npiggin@gmail.com |
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Nicholas Piggin
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31d6490ccb |
powerpc/mm: Remove stale do_page_fault comment referring to SLB faults
SLB faults no longer call do_page_fault, this was removed somewhere between 2.6.0 and 2.6.12. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-17-npiggin@gmail.com |
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Nicholas Piggin
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f4c03b0e52 |
powerpc/64s: move bad_page_fault handling to C
This simplifies code, and it is also useful when introducing interrupt handler wrappers when introducing wrapper functionality that doesn't cope with asm entry code calling into more than one handler function. 32-bit and 64e still have some such cases, which limits some ways they can use interrupt wrappers. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-15-npiggin@gmail.com |
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Nicholas Piggin
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4cb8428465 |
powerpc: rearrange do_page_fault error case to be inside exception_enter
This keeps the context tracking over the entire interrupt handler which helps later with moving context tracking into interrupt wrappers. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-14-npiggin@gmail.com |
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Nicholas Piggin
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71f47976fa |
powerpc/64s: add do_bad_page_fault_segv handler
This function acts like an interrupt handler so it needs to follow the standard interrupt handler function signature which will be introduced in a future change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-13-npiggin@gmail.com |
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Nicholas Piggin
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8458c628a5 |
powerpc: bad_page_fault get registers from regs
Similar to the previous patch this makes interrupt handler function types more regular so they can be wrapped with the next patch. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-12-npiggin@gmail.com |
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Nicholas Piggin
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a01a3f2ddb |
powerpc: remove arguments from fault handler functions
Make mm fault handlers all just take the pt_regs * argument and load DAR/DSISR from that. Make those that return a value return long. This is done to make the function signatures match other handlers, which will help with a future patch to add wrappers. Explicit arguments could be added for performance but that would require more wrapper macro variants. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210130130852.2952424-7-npiggin@gmail.com |
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Christophe Leroy
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5f1888a077 |
powerpc/fault: Perform exception fixup in do_page_fault()
Exception fixup doesn't require the heady full regs saving, do it from do_page_fault() directly. For that, split bad_page_fault() in two parts. As bad_page_fault() can also be called from other places than handle_page_fault(), it will still perform exception fixup and fallback on __bad_page_fault(). handle_page_fault() directly calls __bad_page_fault() as the exception fixup will now be done by do_page_fault() Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/bd07d6fef9237614cd6d318d8f19faeeadaa816b.1607491748.git.christophe.leroy@csgroup.eu |
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Christophe Leroy
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cbd7e6ca02 |
powerpc/fault: Avoid heavy search_exception_tables() verification
search_exception_tables() is an heavy operation, we have to avoid it. When KUAP is selected, we'll know the fault has been blocked by KUAP. When it is blocked by KUAP, check whether we are in an expected userspace access place. If so, emit a warning to spot something is going work. Otherwise, just remain silent, it will likely Oops soon. When KUAP is not selected, it behaves just as if the address was already in the TLBs and no fault was generated. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/9870f01e293a5a76c4f4e4ddd4a6b0f63038c591.1607491748.git.christophe.leroy@csgroup.eu |
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Christophe Leroy
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3dc12dfe74 |
powerpc/mm: Move the WARN() out of bad_kuap_fault()
In order to prepare the removal of calls to search_exception_tables() on the fast path, move the WARN() out of bad_kuap_fault(). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/9501311014bd6507e04b27a0c3035186ccf65cd5.1607491748.git.christophe.leroy@csgroup.eu |
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Christophe Leroy
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5250d026d2 |
powerpc/fault: Unnest definition of page_fault_is_write() and page_fault_is_bad()
To make it more readable, separate page_fault_is_write() and page_fault_is_bad() to avoir several levels of #ifdefs Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/6afaac2495248d68f94c438c5ec36b6010931de5.1607491748.git.christophe.leroy@csgroup.eu |
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Christophe Leroy
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7ceb40027e |
powerpc/mm: sanity_check_fault() should work for all, not only BOOK3S
The verification and message introduced by commit |
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Aneesh Kumar K.V
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475c8749d9 |
powerpc/book3s64/kuap: Improve error reporting with KUAP
This partially reverts commit |
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Aneesh Kumar K.V
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eb232b1624 |
powerpc/book3s64/kuap: Improve error reporting with KUAP
With hash translation use DSISR_KEYFAULT to identify a wrong access. With Radix we look at the AMR value and type of fault. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201127044424.40686-17-aneesh.kumar@linux.ibm.com |
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Peter Xu
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428fdc0944 |
mm/powerpc: use general page fault accounting
Use the general page fault accounting by passing regs into handle_mm_fault(). Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Link: http://lkml.kernel.org/r/20200707225021.200906-17-peterx@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Peter Xu
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bce617edec |
mm: do page fault accounting in handle_mm_fault
Patch series "mm: Page fault accounting cleanups", v5.
This is v5 of the pf accounting cleanup series. It originates from Gerald
Schaefer's report on an issue a week ago regarding to incorrect page fault
accountings for retried page fault after commit
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Michael Ellerman
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773b3e53df |
powerpc/mm: Remove custom stack expansion checking
We have powerpc specific logic in our page fault handling to decide if an access to an unmapped address below the stack pointer should expand the stack VMA. The logic aims to prevent userspace from doing bad accesses below the stack pointer. However as long as the stack is < 1MB in size, we allow all accesses without further checks. Adding some debug I see that I can do a full kernel build and LTP run, and not a single process has used more than 1MB of stack. So for the majority of processes the logic never even fires. We also recently found a nasty bug in this code which could cause userspace programs to be killed during signal delivery. It went unnoticed presumably because most processes use < 1MB of stack. The generic mm code has also grown support for stack guard pages since this code was originally written, so the most heinous case of the stack expanding into other mappings is now handled for us. Finally although some other arches have special logic in this path, from what I can tell none of x86, arm64, arm and s390 impose any extra checks other than those in expand_stack(). So drop our complicated logic and like other architectures just let the stack expand as long as its within the rlimit. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Tested-by: Daniel Axtens <dja@axtens.net> Link: https://lore.kernel.org/r/20200724092528.1578671-4-mpe@ellerman.id.au |
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Michael Ellerman
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63dee5df43 |
powerpc: Allow 4224 bytes of stack expansion for the signal frame
We have powerpc specific logic in our page fault handling to decide if
an access to an unmapped address below the stack pointer should expand
the stack VMA.
The code was originally added in 2004 "ported from 2.4". The rough
logic is that the stack is allowed to grow to 1MB with no extra
checking. Over 1MB the access must be within 2048 bytes of the stack
pointer, or be from a user instruction that updates the stack pointer.
The 2048 byte allowance below the stack pointer is there to cover the
288 byte "red zone" as well as the "about 1.5kB" needed by the signal
delivery code.
Unfortunately since then the signal frame has expanded, and is now
4224 bytes on 64-bit kernels with transactional memory enabled. This
means if a process has consumed more than 1MB of stack, and its stack
pointer lies less than 4224 bytes from the next page boundary, signal
delivery will fault when trying to expand the stack and the process
will see a SEGV.
The total size of the signal frame is the size of struct rt_sigframe
(which includes the red zone) plus __SIGNAL_FRAMESIZE (128 bytes on
64-bit).
The 2048 byte allowance was correct until 2008 as the signal frame
was:
struct rt_sigframe {
struct ucontext uc; /* 0 1440 */
/* --- cacheline 11 boundary (1408 bytes) was 32 bytes ago --- */
long unsigned int _unused[2]; /* 1440 16 */
unsigned int tramp[6]; /* 1456 24 */
struct siginfo * pinfo; /* 1480 8 */
void * puc; /* 1488 8 */
struct siginfo info; /* 1496 128 */
/* --- cacheline 12 boundary (1536 bytes) was 88 bytes ago --- */
char abigap[288]; /* 1624 288 */
/* size: 1920, cachelines: 15, members: 7 */
/* padding: 8 */
};
1920 + 128 = 2048
Then in commit
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Michel Lespinasse
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c1e8d7c6a7 |
mmap locking API: convert mmap_sem comments
Convert comments that reference mmap_sem to reference mmap_lock instead. [akpm@linux-foundation.org: fix up linux-next leftovers] [akpm@linux-foundation.org: s/lockaphore/lock/, per Vlastimil] [akpm@linux-foundation.org: more linux-next fixups, per Michel] Signed-off-by: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Laurent Dufour <ldufour@linux.ibm.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-13-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Michel Lespinasse
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d8ed45c5dc |
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
This change converts the existing mmap_sem rwsem calls to use the new mmap locking API instead. The change is generated using coccinelle with the following rule: // spatch --sp-file mmap_lock_api.cocci --in-place --include-headers --dir . @@ expression mm; @@ ( -init_rwsem +mmap_init_lock | -down_write +mmap_write_lock | -down_write_killable +mmap_write_lock_killable | -down_write_trylock +mmap_write_trylock | -up_write +mmap_write_unlock | -downgrade_write +mmap_write_downgrade | -down_read +mmap_read_lock | -down_read_killable +mmap_read_lock_killable | -down_read_trylock +mmap_read_trylock | -up_read +mmap_read_unlock ) -(&mm->mmap_sem) +(mm) Signed-off-by: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-5-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
Mike Rapoport
|
e31cf2f4ca |
mm: don't include asm/pgtable.h if linux/mm.h is already included
Patch series "mm: consolidate definitions of page table accessors", v2.
The low level page table accessors (pXY_index(), pXY_offset()) are
duplicated across all architectures and sometimes more than once. For
instance, we have 31 definition of pgd_offset() for 25 supported
architectures.
Most of these definitions are actually identical and typically it boils
down to, e.g.
static inline unsigned long pmd_index(unsigned long address)
{
return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
}
static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
{
return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
}
These definitions can be shared among 90% of the arches provided
XYZ_SHIFT, PTRS_PER_XYZ and xyz_page_vaddr() are defined.
For architectures that really need a custom version there is always
possibility to override the generic version with the usual ifdefs magic.
These patches introduce include/linux/pgtable.h that replaces
include/asm-generic/pgtable.h and add the definitions of the page table
accessors to the new header.
This patch (of 12):
The linux/mm.h header includes <asm/pgtable.h> to allow inlining of the
functions involving page table manipulations, e.g. pte_alloc() and
pmd_alloc(). So, there is no point to explicitly include <asm/pgtable.h>
in the files that include <linux/mm.h>.
The include statements in such cases are remove with a simple loop:
for f in $(git grep -l "include <linux/mm.h>") ; do
sed -i -e '/include <asm\/pgtable.h>/ d' $f
done
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: Mike Rapoport <rppt@kernel.org>
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/20200514170327.31389-1-rppt@kernel.org
Link: http://lkml.kernel.org/r/20200514170327.31389-2-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
Jordan Niethe
|
7ba68b2172 |
powerpc: Add a probe_user_read_inst() function
Introduce a probe_user_read_inst() function to use in cases where probe_user_read() is used for getting an instruction. This will be more useful for prefixed instructions. Signed-off-by: Jordan Niethe <jniethe5@gmail.com> Reviewed-by: Alistair Popple <alistair@popple.id.au> [mpe: Don't write to *inst on error, fold in __user annotations] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200506034050.24806-14-jniethe5@gmail.com |
||
|
Jordan Niethe
|
94afd069d9 |
powerpc: Use a datatype for instructions
Currently unsigned ints are used to represent instructions on powerpc. This has worked well as instructions have always been 4 byte words. However, ISA v3.1 introduces some changes to instructions that mean this scheme will no longer work as well. This change is Prefixed Instructions. A prefixed instruction is made up of a word prefix followed by a word suffix to make an 8 byte double word instruction. No matter the endianness of the system the prefix always comes first. Prefixed instructions are only planned for powerpc64. Introduce a ppc_inst type to represent both prefixed and word instructions on powerpc64 while keeping it possible to exclusively have word instructions on powerpc32. Signed-off-by: Jordan Niethe <jniethe5@gmail.com> [mpe: Fix compile error in emulate_spe()] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200506034050.24806-12-jniethe5@gmail.com |
||
|
Jordan Niethe
|
8094892d1a |
powerpc: Use a function for getting the instruction op code
In preparation for using a data type for instructions that can not be directly used with the '>>' operator use a function for getting the op code of an instruction. Signed-off-by: Jordan Niethe <jniethe5@gmail.com> Reviewed-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200506034050.24806-9-jniethe5@gmail.com |
||
|
Jordan Niethe
|
777e26f0ed |
powerpc: Use an accessor for instructions
In preparation for introducing a more complicated instruction type to accommodate prefixed instructions use an accessor for getting an instruction as a u32. Signed-off-by: Jordan Niethe <jniethe5@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200506034050.24806-8-jniethe5@gmail.com |
||
|
Aneesh Kumar K.V
|
c46241a370 |
powerpc/pkeys: Check vma before returning key fault error to the user
If multiple threads in userspace keep changing the protection keys
mapping a range, there can be a scenario where kernel takes a key fault
but the pkey value found in the siginfo struct is a permissive one.
This can confuse the userspace as shown in the below test case.
/* use this to control the number of test iterations */
static void pkeyreg_set(int pkey, unsigned long rights)
{
unsigned long reg, shift;
shift = (NR_PKEYS - pkey - 1) * PKEY_BITS_PER_PKEY;
asm volatile("mfspr %0, 0xd" : "=r"(reg));
reg &= ~(((unsigned long) PKEY_BITS_MASK) << shift);
reg |= (rights & PKEY_BITS_MASK) << shift;
asm volatile("mtspr 0xd, %0" : : "r"(reg));
}
static unsigned long pkeyreg_get(void)
{
unsigned long reg;
asm volatile("mfspr %0, 0xd" : "=r"(reg));
return reg;
}
static int sys_pkey_mprotect(void *addr, size_t len, int prot, int pkey)
{
return syscall(SYS_pkey_mprotect, addr, len, prot, pkey);
}
static int sys_pkey_alloc(unsigned long flags, unsigned long access_rights)
{
return syscall(SYS_pkey_alloc, flags, access_rights);
}
static int sys_pkey_free(int pkey)
{
return syscall(SYS_pkey_free, pkey);
}
static int faulting_pkey;
static int permissive_pkey;
static pthread_barrier_t pkey_set_barrier;
static pthread_barrier_t mprotect_barrier;
static void pkey_handle_fault(int signum, siginfo_t *sinfo, void *ctx)
{
unsigned long pkeyreg;
/* FIXME: printf is not signal-safe but for the current purpose,
it gets the job done. */
printf("pkey: exp = %d, got = %d\n", faulting_pkey, sinfo->si_pkey);
fflush(stdout);
assert(sinfo->si_code == SEGV_PKUERR);
assert(sinfo->si_pkey == faulting_pkey);
/* clear pkey permissions to let the faulting instruction continue */
pkeyreg_set(faulting_pkey, 0x0);
}
static void *do_mprotect_fault(void *p)
{
unsigned long rights, pkeyreg, pgsize;
unsigned int i;
void *region;
int pkey;
srand(time(NULL));
pgsize = sysconf(_SC_PAGESIZE);
rights = PKEY_DISABLE_WRITE;
region = p;
/* allocate key, no permissions */
assert((pkey = sys_pkey_alloc(0, PKEY_DISABLE_ACCESS)) > 0);
pkeyreg_set(4, 0x0);
/* cache the pkey here as the faulting pkey for future reference
in the signal handler */
faulting_pkey = pkey;
printf("%s: faulting pkey = %d\n", __func__, faulting_pkey);
/* try to allocate, mprotect and free pkeys repeatedly */
for (i = 0; i < NUM_ITERATIONS; i++) {
/* sync up with the other thread here */
pthread_barrier_wait(&pkey_set_barrier);
/* make sure that the pkey used by the non-faulting thread
is made permissive for this thread's context too so that
no faults are triggered because it still might have been
set to a restrictive value */
// pkeyreg_set(permissive_pkey, 0x0);
/* sync up with the other thread here */
pthread_barrier_wait(&mprotect_barrier);
/* perform mprotect */
assert(!sys_pkey_mprotect(region, pgsize, PROT_READ | PROT_WRITE, pkey));
/* choose a random byte from the protected region and
attempt to write to it, this will generate a fault */
*((char *) region + (rand() % pgsize)) = rand();
/* restore pkey permissions as the signal handler may have
cleared the bit out for the sake of continuing */
pkeyreg_set(pkey, PKEY_DISABLE_WRITE);
}
/* free pkey */
sys_pkey_free(pkey);
return NULL;
}
static void *do_mprotect_nofault(void *p)
{
unsigned long pgsize;
unsigned int i, j;
void *region;
int pkey;
pgsize = sysconf(_SC_PAGESIZE);
region = p;
/* try to allocate, mprotect and free pkeys repeatedly */
for (i = 0; i < NUM_ITERATIONS; i++) {
/* allocate pkey, all permissions */
assert((pkey = sys_pkey_alloc(0, 0)) > 0);
permissive_pkey = pkey;
/* sync up with the other thread here */
pthread_barrier_wait(&pkey_set_barrier);
pthread_barrier_wait(&mprotect_barrier);
/* perform mprotect on the common page, no faults will
be triggered as this is most permissive */
assert(!sys_pkey_mprotect(region, pgsize, PROT_READ | PROT_WRITE, pkey));
/* free pkey */
assert(!sys_pkey_free(pkey));
}
return NULL;
}
int main(int argc, char **argv)
{
pthread_t fault_thread, nofault_thread;
unsigned long pgsize;
struct sigaction act;
pthread_attr_t attr;
cpu_set_t fault_cpuset, nofault_cpuset;
unsigned int i;
void *region;
/* allocate memory region to protect */
pgsize = sysconf(_SC_PAGESIZE);
assert(region = memalign(pgsize, pgsize));
CPU_ZERO(&fault_cpuset);
CPU_SET(0, &fault_cpuset);
CPU_ZERO(&nofault_cpuset);
CPU_SET(8, &nofault_cpuset);
assert(!pthread_attr_init(&attr));
/* setup sigsegv signal handler */
act.sa_handler = 0;
act.sa_sigaction = pkey_handle_fault;
assert(!sigprocmask(SIG_SETMASK, 0, &act.sa_mask));
act.sa_flags = SA_SIGINFO;
act.sa_restorer = 0;
assert(!sigaction(SIGSEGV, &act, NULL));
/* setup barrier for the two threads */
pthread_barrier_init(&pkey_set_barrier, NULL, 2);
pthread_barrier_init(&mprotect_barrier, NULL, 2);
/* setup and start threads */
assert(!pthread_create(&fault_thread, &attr, &do_mprotect_fault, region));
assert(!pthread_setaffinity_np(fault_thread, sizeof(cpu_set_t), &fault_cpuset));
assert(!pthread_create(&nofault_thread, &attr, &do_mprotect_nofault, region));
assert(!pthread_setaffinity_np(nofault_thread, sizeof(cpu_set_t), &nofault_cpuset));
/* cleanup */
assert(!pthread_attr_destroy(&attr));
assert(!pthread_join(fault_thread, NULL));
assert(!pthread_join(nofault_thread, NULL));
assert(!pthread_barrier_destroy(&pkey_set_barrier));
assert(!pthread_barrier_destroy(&mprotect_barrier));
free(region);
puts("PASS");
return EXIT_SUCCESS;
}
The above test can result the below failure without this patch.
pkey: exp = 3, got = 3
pkey: exp = 3, got = 4
a.out: pkey-siginfo-race.c💯 pkey_handle_fault: Assertion `sinfo->si_pkey == faulting_pkey' failed.
Aborted
Check for vma access before considering this a key fault. If vma pkey allow
access retry the acess again.
Test case is written by Sandipan Das <sandipan@linux.ibm.com> hence added SOB
from him.
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200505071729.54912-3-aneesh.kumar@linux.ibm.com
|
||
|
Aneesh Kumar K.V
|
fe4a6856cb |
powerpc/pkeys: Avoid using lockless page table walk
Fetch pkey from vma instead of linux page table. Also document the fact that in some cases the pkey returned in siginfo won't be the same as the one we took keyfault on. Even with linux page table walk, we can end up in a similar scenario. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200505071729.54912-2-aneesh.kumar@linux.ibm.com |
||
Anshuman Khandual
|
3122e80efc |
mm/vma: make vma_is_accessible() available for general use
Lets move vma_is_accessible() helper to include/linux/mm.h which makes it available for general use. While here, this replaces all remaining open encodings for VMA access check with vma_is_accessible(). Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Guo Ren <guoren@kernel.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Guo Ren <guoren@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paulburton@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Nick Piggin <npiggin@gmail.com> Cc: Paul Mackerras <paulus@ozlabs.org> Cc: Will Deacon <will@kernel.org> Link: http://lkml.kernel.org/r/1582520593-30704-3-git-send-email-anshuman.khandual@arm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Peter Xu
|
4064b98270 |
mm: allow VM_FAULT_RETRY for multiple times
The idea comes from a discussion between Linus and Andrea [1].
Before this patch we only allow a page fault to retry once. We achieved
this by clearing the FAULT_FLAG_ALLOW_RETRY flag when doing
handle_mm_fault() the second time. This was majorly used to avoid
unexpected starvation of the system by looping over forever to handle the
page fault on a single page. However that should hardly happen, and after
all for each code path to return a VM_FAULT_RETRY we'll first wait for a
condition (during which time we should possibly yield the cpu) to happen
before VM_FAULT_RETRY is really returned.
This patch removes the restriction by keeping the FAULT_FLAG_ALLOW_RETRY
flag when we receive VM_FAULT_RETRY. It means that the page fault handler
now can retry the page fault for multiple times if necessary without the
need to generate another page fault event. Meanwhile we still keep the
FAULT_FLAG_TRIED flag so page fault handler can still identify whether a
page fault is the first attempt or not.
Then we'll have these combinations of fault flags (only considering
ALLOW_RETRY flag and TRIED flag):
- ALLOW_RETRY and !TRIED: this means the page fault allows to
retry, and this is the first try
- ALLOW_RETRY and TRIED: this means the page fault allows to
retry, and this is not the first try
- !ALLOW_RETRY and !TRIED: this means the page fault does not allow
to retry at all
- !ALLOW_RETRY and TRIED: this is forbidden and should never be used
In existing code we have multiple places that has taken special care of
the first condition above by checking against (fault_flags &
FAULT_FLAG_ALLOW_RETRY). This patch introduces a simple helper to detect
the first retry of a page fault by checking against both (fault_flags &
FAULT_FLAG_ALLOW_RETRY) and !(fault_flag & FAULT_FLAG_TRIED) because now
even the 2nd try will have the ALLOW_RETRY set, then use that helper in
all existing special paths. One example is in __lock_page_or_retry(), now
we'll drop the mmap_sem only in the first attempt of page fault and we'll
keep it in follow up retries, so old locking behavior will be retained.
This will be a nice enhancement for current code [2] at the same time a
supporting material for the future userfaultfd-writeprotect work, since in
that work there will always be an explicit userfault writeprotect retry
for protected pages, and if that cannot resolve the page fault (e.g., when
userfaultfd-writeprotect is used in conjunction with swapped pages) then
we'll possibly need a 3rd retry of the page fault. It might also benefit
other potential users who will have similar requirement like userfault
write-protection.
GUP code is not touched yet and will be covered in follow up patch.
Please read the thread below for more information.
[1] https://lore.kernel.org/lkml/20171102193644.GB22686@redhat.com/
[2] https://lore.kernel.org/lkml/20181230154648.GB9832@redhat.com/
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Suggested-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Brian Geffon <bgeffon@google.com>
Cc: Bobby Powers <bobbypowers@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Denis Plotnikov <dplotnikov@virtuozzo.com>
Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Kirill A . Shutemov" <kirill@shutemov.name>
Cc: Martin Cracauer <cracauer@cons.org>
Cc: Marty McFadden <mcfadden8@llnl.gov>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Maya Gokhale <gokhale2@llnl.gov>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Link: http://lkml.kernel.org/r/20200220160246.9790-1-peterx@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Peter Xu
|
dde1607248 |
mm: introduce FAULT_FLAG_DEFAULT
Although there're tons of arch-specific page fault handlers, most of them are still sharing the same initial value of the page fault flags. Say, merely all of the page fault handlers would allow the fault to be retried, and they also allow the fault to respond to SIGKILL. Let's define a default value for the fault flags to replace those initial page fault flags that were copied over. With this, it'll be far easier to introduce new fault flag that can be used by all the architectures instead of touching all the archs. Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Brian Geffon <bgeffon@google.com> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Bobby Powers <bobbypowers@gmail.com> Cc: Denis Plotnikov <dplotnikov@virtuozzo.com> Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: "Kirill A . Shutemov" <kirill@shutemov.name> Cc: Martin Cracauer <cracauer@cons.org> Cc: Marty McFadden <mcfadden8@llnl.gov> Cc: Matthew Wilcox <willy@infradead.org> Cc: Maya Gokhale <gokhale2@llnl.gov> Cc: Mel Gorman <mgorman@suse.de> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Pavel Emelyanov <xemul@openvz.org> Link: http://lkml.kernel.org/r/20200220160238.9694-1-peterx@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Peter Xu
|
c9a0dad162 |
powerpc/mm: use helper fault_signal_pending()
Let powerpc code to use the new helper, by moving the signal handling earlier before the retry logic. Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Brian Geffon <bgeffon@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Bobby Powers <bobbypowers@gmail.com> Cc: David Hildenbrand <david@redhat.com> Cc: Denis Plotnikov <dplotnikov@virtuozzo.com> Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: "Kirill A . Shutemov" <kirill@shutemov.name> Cc: Martin Cracauer <cracauer@cons.org> Cc: Marty McFadden <mcfadden8@llnl.gov> Cc: Matthew Wilcox <willy@infradead.org> Cc: Maya Gokhale <gokhale2@llnl.gov> Cc: Mel Gorman <mgorman@suse.de> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Pavel Emelyanov <xemul@openvz.org> Link: http://lkml.kernel.org/r/20200220160222.9422-1-peterx@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Michael Ellerman
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4c25df5640 |
Merge branch 'topic/user-access-begin' into next
Merge the user_access_begin() series from Christophe. This is based on a commit from Linus that went into v5.5-rc7. |
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Christophe Leroy
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6ec20aa2e5 |
powerpc/32s: Fix bad_kuap_fault()
At the moment, bad_kuap_fault() reports a fault only if a bad access
to userspace occurred while access to userspace was not granted.
But if a fault occurs for a write outside the allowed userspace
segment(s) that have been unlocked, bad_kuap_fault() fails to
detect it and the kernel loops forever in do_page_fault().
Fix it by checking that the accessed address is within the allowed
range.
Fixes:
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Christophe Leroy
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0f9aee0cb9 |
powerpc/mm: Don't log user reads to 0xffffffff
Running vdsotest leaves many times the following log: [ 79.629901] vdsotest[396]: User access of kernel address (ffffffff) - exploit attempt? (uid: 0) A pointer set to (-1) is likely a programming error similar to a NULL pointer and is not worth logging as an exploit attempt. Don't log user accesses to 0xffffffff. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/0728849e826ba16f1fbd6fa7f5c6cc87bd64e097.1577087627.git.christophe.leroy@c-s.fr |
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Christophe Leroy
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def0bfdbd6 |
powerpc: use probe_user_read() and probe_user_write()
Instead of opencoding, use probe_user_read() to failessly read a user location and probe_user_write() for writing to user. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/e041f5eedb23f09ab553be8a91c3de2087147320.1579800517.git.christophe.leroy@c-s.fr |