199 Commits

Author	SHA1	Message	Date
Minchan Kim	7df45e50a5	ANDROID: vendor hook to control blk_plug for memory reclaim ... Add vendor hook to contorl blk plugging. Bug: 255471591 Bug: 238728493 Change-Id: I96b73cec14f0d2fea46a4828526e6ae5aa5c71b7 Signed-off-by: Minchan Kim <minchan@google.com> Signed-off-by: Richard Chang <richardycc@google.com> (cherry picked from commit a17e132ec4f290621666311e73f43202706d2743)	2023-01-13 18:43:29 +00:00
Greg Kroah-Hartman	eb07b1080f	Merge 5.15.72 into android14-5.15 ... Changes in 5.15.72 ALSA: hda: Do disconnect jacks at codec unbind ALSA: hda: Fix hang at HD-audio codec unbinding due to refcount saturation ALSA: hda: Fix Nvidia dp infoframe ALSA: hda/realtek: fix speakers and micmute on HP 855 G8 cgroup: reduce dependency on cgroup_mutex cgroup: cgroup_get_from_id() must check the looked-up kn is a directory uas: add no-uas quirk for Hiksemi usb_disk usb-storage: Add Hiksemi USB3-FW to IGNORE_UAS uas: ignore UAS for Thinkplus chips usb: typec: ucsi: Remove incorrect warning thunderbolt: Explicitly reset plug events delay back to USB4 spec value net: usb: qmi_wwan: Add new usb-id for Dell branded EM7455 Input: snvs_pwrkey - fix SNVS_HPVIDR1 register address can: c_can: don't cache TX messages for C_CAN cores clk: ingenic-tcu: Properly enable registers before accessing timers x86/sgx: Do not fail on incomplete sanitization on premature stop of ksgxd ARM: dts: integrator: Tag PCI host with device_type ntfs: fix BUG_ON in ntfs_lookup_inode_by_name() mm/damon/dbgfs: fix memory leak when using debugfs_lookup() net: mt7531: only do PLL once after the reset Revert "firmware: arm_scmi: Add clock management to the SCMI power domain" drm/i915/gt: Restrict forced preemption to the active context drm/amdgpu: Add amdgpu suspend-resume code path under SRIOV vduse: prevent uninitialized memory accesses libata: add ATA_HORKAGE_NOLPM for Pioneer BDR-207M and BDR-205 mmc: moxart: fix 4-bit bus width and remove 8-bit bus width mmc: hsq: Fix data stomping during mmc recovery mm/page_alloc: fix race condition between build_all_zonelists and page allocation mm: prevent page_frag_alloc() from corrupting the memory mm: fix dereferencing possible ERR_PTR mm/migrate_device.c: flush TLB while holding PTL mm: fix madivse_pageout mishandling on non-LRU page mm,hwpoison: check mm when killing accessing process media: dvb_vb2: fix possible out of bound access media: rkvdec: Disable H.264 error detection media: v4l2-compat-ioctl32.c: zero buffer passed to v4l2_compat_get_array_args() swiotlb: max mapping size takes min align mask into account ARM: dts: am33xx: Fix MMCHS0 dma properties reset: imx7: Fix the iMX8MP PCIe PHY PERST support ARM: dts: am5748: keep usb4_tm disabled soc: sunxi: sram: Actually claim SRAM regions soc: sunxi: sram: Prevent the driver from being unbound soc: sunxi_sram: Make use of the helper function devm_platform_ioremap_resource() soc: sunxi: sram: Fix probe function ordering issues soc: sunxi: sram: Fix debugfs info for A64 SRAM C ASoC: imx-card: Fix refcount issue with of_node_put arm64: dts: qcom: sm8350: fix UFS PHY serdes size ASoC: tas2770: Reinit regcache on reset drm/bridge: lt8912b: add vsync hsync drm/bridge: lt8912b: set hdmi or dvi mode drm/bridge: lt8912b: fix corrupted image output Revert "drm: bridge: analogix/dp: add panel prepare/unprepare in suspend/resume time" Input: melfas_mip4 - fix return value check in mip4_probe() gpio: mvebu: Fix check for pwm support on non-A8K platforms usbnet: Fix memory leak in usbnet_disconnect() net: sched: act_ct: fix possible refcount leak in tcf_ct_init() cxgb4: fix missing unlock on ETHOFLD desc collect fail path net/mlxbf_gige: Fix an IS_ERR() vs NULL bug in mlxbf_gige_mdio_probe nvme: Fix IOC_PR_CLEAR and IOC_PR_RELEASE ioctls for nvme devices wifi: mac80211: fix regression with non-QoS drivers net: stmmac: power up/down serdes in stmmac_open/release net: phy: Don't WARN for PHY_UP state in mdio_bus_phy_resume() selftests: Fix the if conditions of in test_extra_filter() vdpa/ifcvf: fix the calculation of queuepair fs: split off setxattr_copy and do_setxattr function from setxattr clk: imx: imx6sx: remove the SET_RATE_PARENT flag for QSPI clocks clk: iproc: Do not rely on node name for correct PLL setup KVM: x86: Hide IA32_PLATFORM_DCA_CAP[31:0] from the guest x86/alternative: Fix race in try_get_desc() drm/i915/gem: Really move i915_gem_context.link under ref protection Linux 5.15.72 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ib8569de2af78d5080b026a46196aad5fc816fd42	2022-10-05 11:59:55 +02:00
Minchan Kim	f9aed3d8a0	mm: fix madivse_pageout mishandling on non-LRU page ... commit 58d426a7ba92870d489686dfdb9d06b66815a2ab upstream. MADV_PAGEOUT tries to isolate non-LRU pages and gets a warning from isolate_lru_page below. Fix it by checking PageLRU in advance. ------------[ cut here ]------------ trying to isolate tail page WARNING: CPU: 0 PID: 6175 at mm/folio-compat.c:158 isolate_lru_page+0x130/0x140 Modules linked in: CPU: 0 PID: 6175 Comm: syz-executor.0 Not tainted 5.18.12 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:isolate_lru_page+0x130/0x140 Link: https://lore.kernel.org/linux-mm/485f8c33.2471b.182d5726afb.Coremail.hantianshuo@iie.ac.cn/ Link: https://lkml.kernel.org/r/20220908151204.762596-1-minchan@kernel.org Fixes: 1a4e58cce8 ("mm: introduce MADV_PAGEOUT") Signed-off-by: Minchan Kim <minchan@kernel.org> Reported-by: 韩天ç`• <hantianshuo@iie.ac.cn> Suggested-by: Yang Shi <shy828301@gmail.com> Acked-by: Yang Shi <shy828301@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2022-10-05 10:39:39 +02:00
Greg Kroah-Hartman	06d58f3cef	Merge 5.15.54 into android14-5.15 ... Changes in 5.15.54 mm/slub: add missing TID updates on slab deactivation mm/filemap: fix UAF in find_lock_entries Revert "selftests/bpf: Add test for bpf_timer overwriting crash" ALSA: usb-audio: Workarounds for Behringer UMC 204/404 HD ALSA: hda/realtek: Add quirk for Clevo L140PU ALSA: cs46xx: Fix missing snd_card_free() call at probe error can: bcm: use call_rcu() instead of costly synchronize_rcu() can: grcan: grcan_probe(): remove extra of_node_get() can: gs_usb: gs_usb_open/close(): fix memory leak can: m_can: m_can_chip_config(): actually enable internal timestamping can: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits can: mcp251xfd: mcp251xfd_regmap_crc_read(): improve workaround handling for mcp2517fd can: mcp251xfd: mcp251xfd_regmap_crc_read(): update workaround broken CRC on TBC register bpf: Fix incorrect verifier simulation around jmp32's jeq/jne bpf: Fix insufficient bounds propagation from adjust_scalar_min_max_vals usbnet: fix memory leak in error case net: rose: fix UAF bug caused by rose_t0timer_expiry netfilter: nft_set_pipapo: release elements in clone from abort path netfilter: nf_tables: stricter validation of element data btrfs: rename btrfs_alloc_chunk to btrfs_create_chunk btrfs: add additional parameters to btrfs_init_tree_ref/btrfs_init_data_ref btrfs: fix invalid delayed ref after subvolume creation failure btrfs: fix warning when freeing leaf after subvolume creation failure Input: cpcap-pwrbutton - handle errors from platform_get_irq() Input: goodix - change goodix_i2c_write() len parameter type to int Input: goodix - add a goodix.h header file Input: goodix - refactor reset handling Input: goodix - try not to touch the reset-pin on x86/ACPI devices dma-buf/poll: Get a file reference for outstanding fence callbacks btrfs: fix deadlock between chunk allocation and chunk btree modifications drm/i915: Disable bonding on gen12+ platforms drm/i915/gt: Register the migrate contexts with their engines drm/i915: Replace the unconditional clflush with drm_clflush_virt_range() PCI/portdrv: Rename pm_iter() to pcie_port_device_iter() PCI: pciehp: Ignore Link Down/Up caused by error-induced Hot Reset media: ir_toy: prevent device from hanging during transmit memory: renesas-rpc-if: Avoid unaligned bus access for HyperFlash ath11k: add hw_param for wakeup_mhi qed: Improve the stack space of filter_config() platform/x86: wmi: introduce helper to convert driver to WMI driver platform/x86: wmi: Replace read_takes_no_args with a flags field platform/x86: wmi: Fix driver->notify() vs ->probe() race mt76: mt7921: get rid of mt7921_mac_set_beacon_filter mt76: mt7921: introduce mt7921_mcu_set_beacon_filter utility routine mt76: mt7921: fix a possible race enabling/disabling runtime-pm bpf: Stop caching subprog index in the bpf_pseudo_func insn bpf, arm64: Use emit_addr_mov_i64() for BPF_PSEUDO_FUNC riscv: defconfig: enable DRM_NOUVEAU RISC-V: defconfigs: Set CONFIG_FB=y, for FB console net/mlx5e: Check action fwd/drop flag exists also for nic flows net/mlx5e: Split actions_match_supported() into a sub function net/mlx5e: TC, Reject rules with drop and modify hdr action net/mlx5e: TC, Reject rules with forward and drop actions ASoC: rt5682: Avoid the unexpected IRQ event during going to suspend ASoC: rt5682: Re-detect the combo jack after resuming ASoC: rt5682: Fix deadlock on resume netfilter: nf_tables: convert pktinfo->tprot_set to flags field netfilter: nft_payload: support for inner header matching / mangling netfilter: nft_payload: don't allow th access for fragments s390/boot: allocate amode31 section in decompressor s390/setup: use physical pointers for memblock_reserve() s390/setup: preserve memory at OLDMEM_BASE and OLDMEM_SIZE ibmvnic: init init_done_rc earlier ibmvnic: clear fop when retrying probe ibmvnic: Allow queueing resets during probe virtio-blk: avoid preallocating big SGL for data io_uring: ensure that fsnotify is always called block: use bdev_get_queue() in bio.c block: only mark bio as tracked if it really is tracked block: fix rq-qos breakage from skipping rq_qos_done_bio() stddef: Introduce struct_group() helper macro media: omap3isp: Use struct_group() for memcpy() region media: davinci: vpif: fix use-after-free on driver unbind mt76: mt76_connac: fix MCU_CE_CMD_SET_ROC definition error mt76: mt7921: do not always disable fw runtime-pm cxl/port: Hold port reference until decoder release clk: renesas: r9a07g044: Update multiplier and divider values for PLL2/3 KVM: x86/mmu: Use yield-safe TDP MMU root iter in MMU notifier unmapping KVM: x86/mmu: Use common TDP MMU zap helper for MMU notifier unmap hook scsi: qla2xxx: Move heartbeat handling from DPC thread to workqueue scsi: qla2xxx: Fix laggy FC remote port session recovery scsi: qla2xxx: edif: Replace list_for_each_safe with list_for_each_entry_safe scsi: qla2xxx: Fix crash during module load unload test gfs2: Fix gfs2_file_buffered_write endless loop workaround vdpa/mlx5: Avoid processing works if workqueue was destroyed btrfs: handle device lookup with btrfs_dev_lookup_args btrfs: add a btrfs_get_dev_args_from_path helper btrfs: use btrfs_get_dev_args_from_path in dev removal ioctls btrfs: remove device item and update super block in the same transaction drbd: add error handling support for add_disk() drbd: Fix double free problem in drbd_create_device drbd: fix an invalid memory access caused by incorrect use of list iterator drm/amd/display: Set min dcfclk if pipe count is 0 drm/amd/display: Fix by adding FPU protection for dcn30_internal_validate_bw NFSD: De-duplicate net_generic(nf->nf_net, nfsd_net_id) NFSD: COMMIT operations must not return NFS?ERR_INVAL riscv/mm: Add XIP_FIXUP for riscv_pfn_base iio: accel: mma8452: use the correct logic to get mma8452_data batman-adv: Use netif_rx(). mtd: spi-nor: Skip erase logic when SPI_NOR_NO_ERASE is set Compiler Attributes: add __alloc_size() for better bounds checking mm: vmalloc: introduce array allocation functions KVM: use __vcalloc for very large allocations btrfs: don't access possibly stale fs_info data in device_list_add KVM: s390x: fix SCK locking scsi: qla2xxx: Fix loss of NVMe namespaces after driver reload test powerpc/32: Don't use lmw/stmw for saving/restoring non volatile regs powerpc: flexible GPR range save/restore macros powerpc/tm: Fix more userspace r13 corruption serial: sc16is7xx: Clear RS485 bits in the shutdown bus: mhi: core: Use correctly sized arguments for bit field bus: mhi: Fix pm_state conversion to string stddef: Introduce DECLARE_FLEX_ARRAY() helper uapi/linux/stddef.h: Add include guards ASoC: rt5682: move clk related code to rt5682_i2c_probe ASoC: rt5682: fix an incorrect NULL check on list iterator drm/amd/vcn: fix an error msg on vcn 3.0 KVM: Don't create VM debugfs files outside of the VM directory tty: n_gsm: Modify CR,PF bit when config requester tty: n_gsm: Save dlci address open status when config requester tty: n_gsm: fix frame reception handling ALSA: usb-audio: add mapping for MSI MPG X570S Carbon Max Wifi. ALSA: usb-audio: add mapping for MSI MAG X570S Torpedo MAX. tty: n_gsm: fix missing update of modem controls after DLCI open btrfs: zoned: encapsulate inode locking for zoned relocation btrfs: zoned: use dedicated lock for data relocation KVM: Initialize debugfs_dentry when a VM is created to avoid NULL deref mm/hwpoison: mf_mutex for soft offline and unpoison mm/hwpoison: avoid the impact of hwpoison_filter() return value on mce handler mm/memory-failure.c: fix race with changing page compound again mm/hwpoison: fix race between hugetlb free/demotion and memory_failure_hugetlb() tty: n_gsm: fix invalid use of MSC in advanced option tty: n_gsm: fix sometimes uninitialized warning in gsm_dlci_modem_output() serial: 8250_mtk: Make sure to select the right FEATURE_SEL tty: n_gsm: fix invalid gsmtty_write_room() result drm/amd: Refactor `amdgpu_aspm` to be evaluated per device drm/amdgpu: vi: disable ASPM on Intel Alder Lake based systems drm/i915: Fix a race between vma / object destruction and unbinding drm/mediatek: Use mailbox rx_callback instead of cmdq_task_cb drm/mediatek: Remove the pointer of struct cmdq_client drm/mediatek: Detect CMDQ execution timeout drm/mediatek: Add cmdq_handle in mtk_crtc drm/mediatek: Add vblank register/unregister callback functions Bluetooth: protect le accept and resolv lists with hdev->lock Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event io_uring: avoid io-wq -EAGAIN looping for !IOPOLL irqchip/gic-v3: Ensure pseudo-NMIs have an ISB between ack and handling irqchip/gic-v3: Refactor ISB + EOIR at ack time rxrpc: Fix locking issue dt-bindings: soc: qcom: smd-rpm: Add compatible for MSM8953 SoC dt-bindings: soc: qcom: smd-rpm: Fix missing MSM8936 compatible module: change to print useful messages from elf_validity_check() module: fix [e_shstrndx].sh_size=0 OOB access iommu/vt-d: Fix PCI bus rescan device hot add fbdev: fbmem: Fix logo center image dx issue fbmem: Check virtual screen sizes in fb_set_var() fbcon: Disallow setting font bigger than screen size fbcon: Prevent that screen size is smaller than font size PM: runtime: Redefine pm_runtime_release_supplier() memregion: Fix memregion_free() fallback definition video: of_display_timing.h: include errno.h powerpc/powernv: delay rng platform device creation until later in boot net: dsa: qca8k: reset cpu port on MTU change can: kvaser_usb: replace run-time checks with struct kvaser_usb_driver_info can: kvaser_usb: kvaser_usb_leaf: fix CAN clock frequency regression can: kvaser_usb: kvaser_usb_leaf: fix bittiming limits xfs: remove incorrect ASSERT in xfs_rename Revert "serial: sc16is7xx: Clear RS485 bits in the shutdown" btrfs: fix error pointer dereference in btrfs_ioctl_rm_dev_v2() virtio-blk: modify the value type of num in virtio_queue_rq() btrfs: fix use of uninitialized variable at rm device ioctl tty: n_gsm: fix encoding of command/response bit ARM: meson: Fix refcount leak in meson_smp_prepare_cpus pinctrl: sunxi: a83t: Fix NAND function name for some pins ASoC: rt711: Add endianness flag in snd_soc_component_driver ASoC: rt711-sdca: Add endianness flag in snd_soc_component_driver ASoC: codecs: rt700/rt711/rt711-sdca: resume bus/codec in .set_jack_detect arm64: dts: qcom: msm8994: Fix CPU6/7 reg values arm64: dts: qcom: sdm845: use dispcc AHB clock for mdss node ARM: mxs_defconfig: Enable the framebuffer arm64: dts: imx8mp-evk: correct mmc pad settings arm64: dts: imx8mp-evk: correct the uart2 pinctl value arm64: dts: imx8mp-evk: correct gpio-led pad settings arm64: dts: imx8mp-evk: correct vbus pad settings arm64: dts: imx8mp-evk: correct eqos pad settings arm64: dts: imx8mp-evk: correct I2C1 pad settings arm64: dts: imx8mp-evk: correct I2C3 pad settings arm64: dts: imx8mp-phyboard-pollux-rdk: correct uart pad settings arm64: dts: imx8mp-phyboard-pollux-rdk: correct eqos pad settings arm64: dts: imx8mp-phyboard-pollux-rdk: correct i2c2 & mmc settings pinctrl: sunxi: sunxi_pconf_set: use correct offset arm64: dts: qcom: msm8992-*: Fix vdd_lvs1_2-supply typo ARM: at91: pm: use proper compatible for sama5d2's rtc ARM: at91: pm: use proper compatibles for sam9x60's rtc and rtt ARM: at91: pm: use proper compatibles for sama7g5's rtc and rtt ARM: dts: at91: sam9x60ek: fix eeprom compatible and size ARM: dts: at91: sama5d2_icp: fix eeprom compatibles ARM: at91: fix soc detection for SAM9X60 SiPs xsk: Clear page contiguity bit when unmapping pool i2c: piix4: Fix a memory leak in the EFCH MMIO support i40e: Fix dropped jumbo frames statistics i40e: Fix VF's MAC Address change on VM ARM: dts: stm32: use usbphyc ck_usbo_48m as USBH OHCI clock on stm32mp151 ARM: dts: stm32: add missing usbh clock and fix clk order on stm32mp15 ibmvnic: Properly dispose of all skbs during a failover. selftests: forwarding: fix flood_unicast_test when h2 supports IFF_UNICAST_FLT selftests: forwarding: fix learning_test when h1 supports IFF_UNICAST_FLT selftests: forwarding: fix error message in learning_test r8169: fix accessing unset transport header i2c: cadence: Unregister the clk notifier in error path dmaengine: imx-sdma: Allow imx8m for imx7 FW revs misc: rtsx_usb: fix use of dma mapped buffer for usb bulk transfer misc: rtsx_usb: use separate command and response buffers misc: rtsx_usb: set return value in rsp_buf alloc err path Revert "mm/memory-failure.c: fix race with changing page compound again" Revert "serial: 8250_mtk: Make sure to select the right FEATURE_SEL" dt-bindings: dma: allwinner,sun50i-a64-dma: Fix min/max typo ida: don't use BUG_ON() for debugging dmaengine: pl330: Fix lockdep warning about non-static key dmaengine: lgm: Fix an error handling path in intel_ldma_probe() dmaengine: at_xdma: handle errors of at_xdmac_alloc_desc() correctly dmaengine: ti: Fix refcount leak in ti_dra7_xbar_route_allocate dmaengine: qcom: bam_dma: fix runtime PM underflow dmaengine: ti: Add missing put_device in ti_dra7_xbar_route_allocate dmaengine: idxd: force wq context cleanup on device disable path selftests/net: fix section name when using xdp_dummy.o Linux 5.15.54 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I3ca4c0aa09a3bea6969c7a127d833034a123f437	2022-07-13 19:41:43 +02:00
luofei	7a07875fab	mm/hwpoison: avoid the impact of hwpoison_filter() return value on mce handler ... [ Upstream commit d1fe111fb62a1cf0446a2919f5effbb33ad0702c ] When the hwpoison page meets the filter conditions, it should not be regarded as successful memory_failure() processing for mce handler, but should return a distinct value, otherwise mce handler regards the error page has been identified and isolated, which may lead to calling set_mce_nospec() to change page attribute, etc. Here memory_failure() return -EOPNOTSUPP to indicate that the error event is filtered, mce handler should not take any action for this situation and hwpoison injector should treat as correct. Link: https://lkml.kernel.org/r/20220223082135.2769649-1-luofei@unicloud.com Signed-off-by: luofei <luofei@unicloud.com> Acked-by: Borislav Petkov <bp@suse.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>	2022-07-12 16:35:05 +02:00
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	2022-04-20 08:18:54 +02:00
Charan Teja Kalla	d4835551fd	Revert "mm: madvise: skip unmapped vma holes passed to process_madvise" ... commit e6b0a7b357659c332231621e4315658d062c23ee upstream. This reverts commit 08095d6310a7 ("mm: madvise: skip unmapped vma holes passed to process_madvise") as process_madvise() fails to return the exact processed bytes in other cases too. As an example: if process_madvise() hits mlocked pages after processing some initial bytes passed in [start, end), it just returns EINVAL although some bytes are processed. Thus making an exception only for ENOMEM is partially fixing the problem of returning the proper advised bytes. Thus revert this patch and return proper bytes advised. Link: https://lkml.kernel.org/r/e73da1304a88b6a8a11907045117cccf4c2b8374.1648046642.git.quic_charante@quicinc.com Fixes: 08095d6310a7ce ("mm: madvise: skip unmapped vma holes passed to process_madvise") Signed-off-by: Charan Teja Kalla <quic_charante@quicinc.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Nadav Amit <nadav.amit@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2022-04-08 14:22:56 +02:00
Charan Teja Kalla	a07a4b75cc	mm: madvise: return correct bytes advised with process_madvise ... commit 5bd009c7c9a9e888077c07535dc0c70aeab242c3 upstream. Patch series "mm: madvise: return correct bytes processed with process_madvise", v2. With the process_madvise(), always choose to return non zero processed bytes over an error. This can help the user to know on which VMA, passed in the 'struct iovec' vector list, is failed to advise thus can take the decission of retrying/skipping on that VMA. This patch (of 2): The process_madvise() system call returns error even after processing some VMA's passed in the 'struct iovec' vector list which leaves the user confused to know where to restart the advise next. It is also against this syscall man page[1] documentation where it mentions that "return value may be less than the total number of requested bytes, if an error occurred after some iovec elements were already processed.". Consider a user passed 10 VMA's in the 'struct iovec' vector list of which 9 are processed but one. Then it just returns the error caused on that failed VMA despite the first 9 VMA's processed, leaving the user confused about on which VMA it is failed. Returning the number of bytes processed here can help the user to know which VMA it is failed on and thus can retry/skip the advise on that VMA. [1]https://man7.org/linux/man-pages/man2/process_madvise.2.html. Link: https://lkml.kernel.org/r/cover.1647008754.git.quic_charante@quicinc.com Link: https://lkml.kernel.org/r/125b61a0edcee5c2db8658aed9d06a43a19ccafc.1647008754.git.quic_charante@quicinc.com Fixes: ecb8ac8b1f14("mm/madvise: introduce process_madvise() syscall: an external memory hinting API") Signed-off-by: Charan Teja Kalla <quic_charante@quicinc.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Minchan Kim <minchan@kernel.org> Cc: Nadav Amit <nadav.amit@gmail.com> Cc: Michal Hocko <mhocko@suse.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2022-04-08 14:22:56 +02:00
Charan Teja Kalla	27d96f11b0	mm: madvise: skip unmapped vma holes passed to process_madvise ... commit 08095d6310a7ce43256b4251577bc66a25c6e1a6 upstream. The process_madvise() system call is expected to skip holes in vma passed through 'struct iovec' vector list. But do_madvise, which process_madvise() calls for each vma, returns ENOMEM in case of unmapped holes, despite the VMA is processed. Thus process_madvise() should treat ENOMEM as expected and consider the VMA passed to as processed and continue processing other vma's in the vector list. Returning -ENOMEM to user, despite the VMA is processed, will be unable to figure out where to start the next madvise. Link: https://lkml.kernel.org/r/4f091776142f2ebf7b94018146de72318474e686.1647008754.git.quic_charante@quicinc.com Fixes: ecb8ac8b1f14("mm/madvise: introduce process_madvise() syscall: an external memory hinting API") Signed-off-by: Charan Teja Kalla <quic_charante@quicinc.com> Cc: David Rientjes <rientjes@google.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Nadav Amit <nadav.amit@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2022-04-08 14:22:56 +02:00
Suren Baghdasaryan	e9eea2a170	UPSTREAM: mm: fix use-after-free when anon vma name is used after vma is freed ... When adjacent vmas are being merged it can result in the vma that was originally passed to madvise_update_vma being destroyed. In the current implementation, the name parameter passed to madvise_update_vma points directly to vma->anon_name and it is used after the call to vma_merge. In the cases when vma_merge merges the original vma and destroys it, this might result in UAF. For that the original vma would have to hold the anon_vma_name with the last reference. The following vma would need to contain a different anon_vma_name object with the same string. Such scenario is shown below: madvise_vma_behavior(vma) madvise_update_vma(vma, ..., anon_name == vma->anon_name) vma_merge(vma) __vma_adjust(vma) <-- merges vma with adjacent one vm_area_free(vma) <-- frees the original vma replace_vma_anon_name(anon_name) <-- UAF of vma->anon_name Fix this by raising the name refcount and stabilizing it. Link: https://lkml.kernel.org/r/20220224231834.1481408-3-surenb@google.com Link: https://lkml.kernel.org/r/20220223153613.835563-3-surenb@google.com Fixes: 9a10064f5625 ("mm: add a field to store names for private anonymous memory") Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reported-by: syzbot+aa7b3d4b35f9dc46a366@syzkaller.appspotmail.com Acked-by: Michal Hocko <mhocko@suse.com> Cc: Alexey Gladkov <legion@kernel.org> Cc: Chris Hyser <chris.hyser@oracle.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Colin Cross <ccross@google.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Peter Collingbourne <pcc@google.com> Cc: Sasha Levin <sashal@kernel.org> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Xiaofeng Cao <caoxiaofeng@yulong.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit 942341dcc5748d9c1fc7009a359fc1916bfe0ef0) Bug: 218352794 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: I07e3cbff2eaa69a0d56281537510f7a42feaaf09	2022-03-24 18:44:46 -07:00
Suren Baghdasaryan	6e2654ba49	UPSTREAM: mm: prevent vm_area_struct::anon_name refcount saturation ... A deep process chain with many vmas could grow really high. With default sysctl_max_map_count (64k) and default pid_max (32k) the max number of vmas in the system is 2147450880 and the refcounter has headroom of 1073774592 before it reaches REFCOUNT_SATURATED (3221225472). Therefore it's unlikely that an anonymous name refcounter will overflow with these defaults. Currently the max for pid_max is PID_MAX_LIMIT (4194304) and for sysctl_max_map_count it's INT_MAX (2147483647). In this configuration anon_vma_name refcount overflow becomes theoretically possible (that still require heavy sharing of that anon_vma_name between processes). kref refcounting interface used in anon_vma_name structure will detect a counter overflow when it reaches REFCOUNT_SATURATED value but will only generate a warning and freeze the ref counter. This would lead to the refcounted object never being freed. A determined attacker could leak memory like that but it would be rather expensive and inefficient way to do so. To ensure anon_vma_name refcount does not overflow, stop anon_vma_name sharing when the refcount reaches REFCOUNT_MAX (2147483647), which still leaves INT_MAX/2 (1073741823) values before the counter reaches REFCOUNT_SATURATED. This should provide enough headroom for raising the refcounts temporarily. Link: https://lkml.kernel.org/r/20220223153613.835563-2-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Suggested-by: Michal Hocko <mhocko@suse.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Alexey Gladkov <legion@kernel.org> Cc: Chris Hyser <chris.hyser@oracle.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Colin Cross <ccross@google.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Collingbourne <pcc@google.com> Cc: Sasha Levin <sashal@kernel.org> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Xiaofeng Cao <caoxiaofeng@yulong.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit 96403e11283def1d1c465c8279514c9a504d8630) Bug: 218352794 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: Ieaab58f6300d9aff3139eed1c1d3417237d81955	2022-03-24 18:44:43 -07:00
Suren Baghdasaryan	0fd37220d8	UPSTREAM: mm: refactor vm_area_struct::anon_vma_name usage code ... Avoid mixing strings and their anon_vma_name referenced pointers by using struct anon_vma_name whenever possible. This simplifies the code and allows easier sharing of anon_vma_name structures when they represent the same name. [surenb@google.com: fix comment] Link: https://lkml.kernel.org/r/20220223153613.835563-1-surenb@google.com Link: https://lkml.kernel.org/r/20220224231834.1481408-1-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Suggested-by: Matthew Wilcox <willy@infradead.org> Suggested-by: Michal Hocko <mhocko@suse.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Colin Cross <ccross@google.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Alexey Gladkov <legion@kernel.org> Cc: Sasha Levin <sashal@kernel.org> Cc: Chris Hyser <chris.hyser@oracle.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Peter Collingbourne <pcc@google.com> Cc: Xiaofeng Cao <caoxiaofeng@yulong.com> Cc: David Hildenbrand <david@redhat.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit 5c26f6ac9416b63d093e29c30e79b3297e425472) Bug: 218352794 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: I4a6b5602ce7151d1a4b88fac489f86d68089bd4d	2022-03-24 18:44:39 -07:00
Suren Baghdasaryan	7ff2a03673	Revert "FROMGIT: mm: fix use-after-free when anon vma name is used after vma is freed" ... This reverts commit 91b7584411. Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: Ic9b7399bc4649e68cad9ac7017225262a2dea579	2022-03-24 18:44:32 -07:00
Suren Baghdasaryan	91b7584411	FROMGIT: mm: fix use-after-free when anon vma name is used after vma is freed ... When adjacent vmas are being merged it can result in the vma that was originally passed to madvise_update_vma being destroyed. In the current implementation, the name parameter passed to madvise_update_vma points directly to vma->anon_name->name and it is used after the call to vma_merge. In the cases when vma_merge merges the original vma and destroys it, this will result in use-after-free bug as shown below: madvise_vma_behavior << passes vma->anon_name->name as name param madvise_update_vma(name) vma_merge __vma_adjust vm_area_free <-- frees the vma replace_vma_anon_name(name) <-- UAF Fix this by raising the name refcount and stabilizing it. Introduce vma_anon_name_{get/put} API for this purpose. Link: https://lkml.kernel.org/r/20220211013032.623763-1-surenb@google.com Fixes: 9a10064f5625 ("mm: add a field to store names for private anonymous memory") Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reported-by: syzbot+aa7b3d4b35f9dc46a366@syzkaller.appspotmail.com Cc: Colin Cross <ccross@google.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Kees Cook <keescook@chromium.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Alexey Gladkov <legion@kernel.org> Cc: Sasha Levin <sashal@kernel.org> Cc: Chris Hyser <chris.hyser@oracle.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Peter Collingbourne <pcc@google.com> Cc: Xiaofeng Cao <caoxiaofeng@yulong.com> Cc: David Hildenbrand <david@redhat.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> (cherry picked from commit 8cadf02b8d6dc771f05f5934c12e751481964039 https://github.com/hnaz/linux-mm.git master) Bug: 218352794 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: I30c00a89109ee842d40e5f4b21a35c07ad695903	2022-02-16 16:52:46 +00:00
Arnd Bergmann	049413278d	UPSTREAM: mm: move anon_vma declarations to linux/mm_inline.h ... The patch to add anonymous vma names causes a build failure in some configurations: include/linux/mm_types.h: In function 'is_same_vma_anon_name': include/linux/mm_types.h:924:37: error: implicit declaration of function 'strcmp' [-Werror=implicit-function-declaration] 924 | return name && vma_name && !strcmp(name, vma_name); | ^~~~~~ include/linux/mm_types.h:22:1: note: 'strcmp' is defined in header '<string.h>'; did you forget to '#include <string.h>'? This should not really be part of linux/mm_types.h in the first place, as that header is meant to only contain structure defintions and need a minimum set of indirect includes itself. While the header clearly includes more than it should at this point, let's not make it worse by including string.h as well, which would pull in the expensive (compile-speed wise) fortify-string logic. Move the new functions into a separate header that only needs to be included in a couple of locations. Link: https://lkml.kernel.org/r/20211207125710.2503446-1-arnd@kernel.org Fixes: "mm: add a field to store names for private anonymous memory" Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Colin Cross <ccross@google.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Kees Cook <keescook@chromium.org> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Peter Xu <peterx@redhat.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit 17fca131cee21724ee953a17c185c14e9533af5b) Bug: 120441514 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: I54719d7ea27d3cf53ef7245b2af88d2a2bc9bafe	2022-01-18 16:01:48 -08:00
Suren Baghdasaryan	3f4e41d409	UPSTREAM: mm: add anonymous vma name refcounting ... While forking a process with high number (64K) of named anonymous vmas the overhead caused by strdup() is noticeable. Experiments with ARM64 Android device show up to 40% performance regression when forking a process with 64k unpopulated anonymous vmas using the max name lengths vs the same process with the same number of anonymous vmas having no name. Introduce anon_vma_name refcounted structure to avoid the overhead of copying vma names during fork() and when splitting named anonymous vmas. When a vma is duplicated, instead of copying the name we increment the refcount of this structure. Multiple vmas can point to the same anon_vma_name as long as they increment the refcount. The name member of anon_vma_name structure is assigned at structure allocation time and is never changed. If vma name changes then the refcount of the original structure is dropped, a new anon_vma_name structure is allocated to hold the new name and the vma pointer is updated to point to the new structure. With this approach the fork() performance regressions is reduced 3-4x times and with usecases using more reasonable number of VMAs (a few thousand) the regressions is not measurable. Link: https://lkml.kernel.org/r/20211019215511.3771969-3-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Colin Cross <ccross@google.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Dave Hansen <dave.hansen@intel.com> Cc: David Rientjes <rientjes@google.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jan Glauber <jan.glauber@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Minchan Kim <minchan@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rob Landley <rob@landley.net> Cc: "Serge E. Hallyn" <serge.hallyn@ubuntu.com> Cc: Shaohua Li <shli@fusionio.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit 78db3412833dc9c479cd17412035f216cfd01a29) Bug: 120441514 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: I4b6d63b1aced3813ebb91479f4bcfd0d89e8fa29	2022-01-18 15:59:04 -08:00
Colin Cross	301c56064d	UPSTREAM: mm: add a field to store names for private anonymous memory ... In many userspace applications, and especially in VM based applications like Android uses heavily, there are multiple different allocators in use. At a minimum there is libc malloc and the stack, and in many cases there are libc malloc, the stack, direct syscalls to mmap anonymous memory, and multiple VM heaps (one for small objects, one for big objects, etc.). Each of these layers usually has its own tools to inspect its usage; malloc by compiling a debug version, the VM through heap inspection tools, and for direct syscalls there is usually no way to track them. On Android we heavily use a set of tools that use an extended version of the logic covered in Documentation/vm/pagemap.txt to walk all pages mapped in userspace and slice their usage by process, shared (COW) vs. unique mappings, backing, etc. This can account for real physical memory usage even in cases like fork without exec (which Android uses heavily to share as many private COW pages as possible between processes), Kernel SamePage Merging, and clean zero pages. It produces a measurement of the pages that only exist in that process (USS, for unique), and a measurement of the physical memory usage of that process with the cost of shared pages being evenly split between processes that share them (PSS). If all anonymous memory is indistinguishable then figuring out the real physical memory usage (PSS) of each heap requires either a pagemap walking tool that can understand the heap debugging of every layer, or for every layer's heap debugging tools to implement the pagemap walking logic, in which case it is hard to get a consistent view of memory across the whole system. Tracking the information in userspace leads to all sorts of problems. It either needs to be stored inside the process, which means every process has to have an API to export its current heap information upon request, or it has to be stored externally in a filesystem that somebody needs to clean up on crashes. It needs to be readable while the process is still running, so it has to have some sort of synchronization with every layer of userspace. Efficiently tracking the ranges requires reimplementing something like the kernel vma trees, and linking to it from every layer of userspace. It requires more memory, more syscalls, more runtime cost, and more complexity to separately track regions that the kernel is already tracking. This patch adds a field to /proc/pid/maps and /proc/pid/smaps to show a userspace-provided name for anonymous vmas. The names of named anonymous vmas are shown in /proc/pid/maps and /proc/pid/smaps as [anon:<name>]. Userspace can set the name for a region of memory by calling prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, start, len, (unsigned long)name) Setting the name to NULL clears it. The name length limit is 80 bytes including NUL-terminator and is checked to contain only printable ascii characters (including space), except '[',']','\','$' and '`'. Ascii strings are being used to have a descriptive identifiers for vmas, which can be understood by the users reading /proc/pid/maps or /proc/pid/smaps. Names can be standardized for a given system and they can include some variable parts such as the name of the allocator or a library, tid of the thread using it, etc. The name is stored in a pointer in the shared union in vm_area_struct that points to a null terminated string. Anonymous vmas with the same name (equivalent strings) and are otherwise mergeable will be merged. The name pointers are not shared between vmas even if they contain the same name. The name pointer is stored in a union with fields that are only used on file-backed mappings, so it does not increase memory usage. CONFIG_ANON_VMA_NAME kernel configuration is introduced to enable this feature. It keeps the feature disabled by default to prevent any additional memory overhead and to avoid confusing procfs parsers on systems which are not ready to support named anonymous vmas. The patch is based on the original patch developed by Colin Cross, more specifically on its latest version [1] posted upstream by Sumit Semwal. It used a userspace pointer to store vma names. In that design, name pointers could be shared between vmas. However during the last upstreaming attempt, Kees Cook raised concerns [2] about this approach and suggested to copy the name into kernel memory space, perform validity checks [3] and store as a string referenced from vm_area_struct. One big concern is about fork() performance which would need to strdup anonymous vma names. Dave Hansen suggested experimenting with worst-case scenario of forking a process with 64k vmas having longest possible names [4]. I ran this experiment on an ARM64 Android device and recorded a worst-case regression of almost 40% when forking such a process. This regression is addressed in the followup patch which replaces the pointer to a name with a refcounted structure that allows sharing the name pointer between vmas of the same name. Instead of duplicating the string during fork() or when splitting a vma it increments the refcount. [1] https://lore.kernel.org/linux-mm/20200901161459.11772-4-sumit.semwal@linaro.org/ [2] https://lore.kernel.org/linux-mm/202009031031.D32EF57ED@keescook/ [3] https://lore.kernel.org/linux-mm/202009031022.3834F692@keescook/ [4] https://lore.kernel.org/linux-mm/5d0358ab-8c47-2f5f-8e43-23b89d6a8e95@intel.com/ Changes for prctl(2) manual page (in the options section): PR_SET_VMA Sets an attribute specified in arg2 for virtual memory areas starting from the address specified in arg3 and spanning the size specified in arg4. arg5 specifies the value of the attribute to be set. Note that assigning an attribute to a virtual memory area might prevent it from being merged with adjacent virtual memory areas due to the difference in that attribute's value. Currently, arg2 must be one of: PR_SET_VMA_ANON_NAME Set a name for anonymous virtual memory areas. arg5 should be a pointer to a null-terminated string containing the name. The name length including null byte cannot exceed 80 bytes. If arg5 is NULL, the name of the appropriate anonymous virtual memory areas will be reset. The name can contain only printable ascii characters (including space), except '[',']','\','$' and '`'. This feature is available only if the kernel is built with the CONFIG_ANON_VMA_NAME option enabled. [surenb@google.com: docs: proc.rst: /proc/PID/maps: fix malformed table] Link: https://lkml.kernel.org/r/20211123185928.2513763-1-surenb@google.com [surenb: rebased over v5.15-rc6, replaced userpointer with a kernel copy, added input sanitization and CONFIG_ANON_VMA_NAME config. The bulk of the work here was done by Colin Cross, therefore, with his permission, keeping him as the author] Link: https://lkml.kernel.org/r/20211019215511.3771969-2-surenb@google.com Signed-off-by: Colin Cross <ccross@google.com> Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Dave Hansen <dave.hansen@intel.com> Cc: David Rientjes <rientjes@google.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jan Glauber <jan.glauber@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Minchan Kim <minchan@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rob Landley <rob@landley.net> Cc: "Serge E. Hallyn" <serge.hallyn@ubuntu.com> Cc: Shaohua Li <shli@fusionio.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit 9a10064f5625d5572c3626c1516e0bebc6c9fe9b) Bug: 120441514 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: I53d56d551a7d62f75341304751814294b447c04e	2022-01-18 15:30:27 -08:00
Colin Cross	730a9d73ab	UPSTREAM: mm: rearrange madvise code to allow for reuse ... Patch series "mm: rearrange madvise code to allow for reuse", v11. Avoid performance regression of the new anon vma name field refcounting it. I checked the image sizes with allnoconfig builds: unpatched Linus' ToT text data bss dec hex filename 1324759 32 73928 1398719 1557bf vmlinux After the first patch is applied (madvise refactoring) text data bss dec hex filename 1322346 32 73928 1396306 154e52 vmlinux >>> 2413 bytes decrease vs ToT <<< After all patches applied with CONFIG_ANON_VMA_NAME=n text data bss dec hex filename 1322337 32 73928 1396297 154e49 vmlinux >>> 2422 bytes decrease vs ToT <<< After all patches applied with CONFIG_ANON_VMA_NAME=y text data bss dec hex filename 1325228 32 73928 1399188 155994 vmlinux >>> 469 bytes increase vs ToT <<< This patch (of 3): Refactor the madvise syscall to allow for parts of it to be reused by a prctl syscall that affects vmas. Move the code that walks vmas in a virtual address range into a function that takes a function pointer as a parameter. The only caller for now is sys_madvise, which uses it to call madvise_vma_behavior on each vma, but the next patch will add an additional caller. Move handling all vma behaviors inside madvise_behavior, and rename it to madvise_vma_behavior. Move the code that updates the flags on a vma, including splitting or merging the vma as necessary, into a new function called madvise_update_vma. The next patch will add support for updating a new anon_name field as well. Link: https://lkml.kernel.org/r/20211019215511.3771969-1-surenb@google.com Signed-off-by: Colin Cross <ccross@google.com> Signed-off-by: Suren Baghdasaryan <surenb@google.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Jan Glauber <jan.glauber@gmail.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Rob Landley <rob@landley.net> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Kees Cook <keescook@chromium.org> Cc: "Serge E. Hallyn" <serge.hallyn@ubuntu.com> Cc: David Rientjes <rientjes@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Hugh Dickins <hughd@google.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Shaohua Li <shli@fusionio.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit ac1e9acc5acf0b41d54de6a4c45471644f8b97ff) Bug: 120441514 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: If96c14ca3acc3795de373d658ba0a940dda68e1c	2022-01-18 14:57:50 -08:00
Suren Baghdasaryan	f355f9635d	Revert "ANDROID: mm: add a field to store names for private anonymous memory" ... This reverts commit 60500a4228. Replacing out-of-tree implementation with the upstream one. Bug: 120441514 Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: Ic34c8e16d51ccf9f00cb59d2de341e911bcb2828	2022-01-18 14:54:47 -08:00
Greg Kroah-Hartman	c2b303f98f	Merge 4e71add028 ("Merge branch 'stable/for-linus-5.15-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft") into android-mainline ... Steps on the way to 5.15-rc1 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ib3f181326491eb896547d802a6f0a1b3be54ce28	2021-09-14 14:35:23 +02:00
Linus Torvalds	14726903c8	Merge branch 'akpm' (patches from Andrew) ... Merge misc updates from Andrew Morton: "173 patches. Subsystems affected by this series: ia64, ocfs2, block, and mm (debug, pagecache, gup, swap, shmem, memcg, selftests, pagemap, mremap, bootmem, sparsemem, vmalloc, kasan, pagealloc, memory-failure, hugetlb, userfaultfd, vmscan, compaction, mempolicy, memblock, oom-kill, migration, ksm, percpu, vmstat, and madvise)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (173 commits) mm/madvise: add MADV_WILLNEED to process_madvise() mm/vmstat: remove unneeded return value mm/vmstat: simplify the array size calculation mm/vmstat: correct some wrong comments mm/percpu,c: remove obsolete comments of pcpu_chunk_populated() selftests: vm: add COW time test for KSM pages selftests: vm: add KSM merging time test mm: KSM: fix data type selftests: vm: add KSM merging across nodes test selftests: vm: add KSM zero page merging test selftests: vm: add KSM unmerge test selftests: vm: add KSM merge test mm/migrate: correct kernel-doc notation mm: wire up syscall process_mrelease mm: introduce process_mrelease system call memblock: make memblock_find_in_range method private mm/mempolicy.c: use in_task() in mempolicy_slab_node() mm/mempolicy: unify the create() func for bind/interleave/prefer-many policies mm/mempolicy: advertise new MPOL_PREFERRED_MANY mm/hugetlb: add support for mempolicy MPOL_PREFERRED_MANY ...	2021-09-03 10:08:28 -07:00
zhangkui	d5fffc5aff	mm/madvise: add MADV_WILLNEED to process_madvise() ... There is a usecase in Android that an app process's memory is swapped out by process_madvise() with MADV_PAGEOUT, such as the memory is swapped to zram or a backing device. When the process is scheduled to running, like switch to foreground, multiple page faults may cause the app dropped frames. To reduce the problem, System Management Software can read-ahead memory of the process immediately when the app switches to forground. Calling process_madvise() with MADV_WILLNEED can meet this need. Link: https://lkml.kernel.org/r/20210804082010.12482-1-zhangkui@oppo.com Signed-off-by: zhangkui <zhangkui@oppo.com> Cc: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-09-03 09:58:18 -07:00
Greg Kroah-Hartman	7c647e3d19	Merge 4520dcbe0d ("Merge tag 'for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply") into android-mainline ... Steps on the way to 5.15-rc1 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ia88ca4292f7c791a2c9a0b256584969fa86a06c4	2021-09-02 09:42:36 +02:00
Linus Torvalds	aa99f3c2b9	Merge tag 'hole_punch_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs ... Pull fs hole punching vs cache filling race fixes from Jan Kara: "Fix races leading to possible data corruption or stale data exposure in multiple filesystems when hole punching races with operations such as readahead. This is the series I was sending for the last merge window but with your objection fixed - now filemap_fault() has been modified to take invalidate_lock only when we need to create new page in the page cache and / or bring it uptodate" * tag 'hole_punch_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: filesystems/locking: fix Malformed table warning cifs: Fix race between hole punch and page fault ceph: Fix race between hole punch and page fault fuse: Convert to using invalidate_lock f2fs: Convert to using invalidate_lock zonefs: Convert to using invalidate_lock xfs: Convert double locking of MMAPLOCK to use VFS helpers xfs: Convert to use invalidate_lock xfs: Refactor xfs_isilocked() ext2: Convert to using invalidate_lock ext4: Convert to use mapping->invalidate_lock mm: Add functions to lock invalidate_lock for two mappings mm: Protect operations adding pages to page cache with invalidate_lock documentation: Sync file_operations members with reality mm: Fix comments mentioning i_mutex	2021-08-30 10:24:50 -07:00
Lee Jones	ab4d4efea8	Merge tag 'v5.14-rc6' into android-mainline ... Linux 5.14-rc6 Change-Id: I2a11e448621a8133f80acbc241a1851d33bc38fb Signed-off-by: Lee Jones <lee.jones@linaro.org>	2021-08-16 09:30:23 +01:00
David Hildenbrand	eb2faa513c	mm/madvise: report SIGBUS as -EFAULT for MADV_POPULATE_(READ|WRITE) ... Doing some extended tests and polishing the man page update for MADV_POPULATE_(READ|WRITE), I realized that we end up converting also SIGBUS (via -EFAULT) to -EINVAL, making it look like yet another madvise() user error. We want to report only problematic mappings and permission problems that the user could have know as -EINVAL. Let's not convert -EFAULT arising due to SIGBUS (or SIGSEGV) to -EINVAL, but instead indicate -EFAULT to user space. While we could also convert it to -ENOMEM, using -EFAULT looks more helpful when user space might want to troubleshoot what's going wrong: MADV_POPULATE_(READ|WRITE) is not part of an final Linux release and we can still adjust the behavior. Link: https://lkml.kernel.org/r/20210726154932.102880-1-david@redhat.com Fixes: 4ca9b3859d ("mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault page tables") Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Michal Hocko <mhocko@suse.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Jann Horn <jannh@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@surriel.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Peter Xu <peterx@redhat.com> Cc: Rolf Eike Beer <eike-kernel@sf-tec.de> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-08-13 14:09:31 -10:00
Jan Kara	9608703e48	mm: Fix comments mentioning i_mutex ... inode->i_mutex has been replaced with inode->i_rwsem long ago. Fix comments still mentioning i_mutex. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: Jan Kara <jack@suse.cz>	2021-07-12 18:31:16 +02:00
Lee Jones	293f275f4d	Merge commit df8ba5f160 ("Merge tag 'kgdb-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux") into android-mainline ... A large step en route to v5.14-rc1 Change-Id: I52bb71dc737044a593d1a9dfd7fe02b31e273ff9 Signed-off-by: Lee Jones <lee.jones@linaro.org>	2021-07-12 11:00:18 +01:00
David Hildenbrand	4ca9b3859d	mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault page tables ... I. Background: Sparse Memory Mappings When we manage sparse memory mappings dynamically in user space - also sometimes involving MAP_NORESERVE - we want to dynamically populate/ discard memory inside such a sparse memory region. Example users are hypervisors (especially implementing memory ballooning or similar technologies like virtio-mem) and memory allocators. In addition, we want to fail in a nice way (instead of generating SIGBUS) if populating does not succeed because we are out of backend memory (which can happen easily with file-based mappings, especially tmpfs and hugetlbfs). While MADV_DONTNEED, MADV_REMOVE and FALLOC_FL_PUNCH_HOLE allow for reliably discarding memory for most mapping types, there is no generic approach to populate page tables and preallocate memory. Although mmap() supports MAP_POPULATE, it is not applicable to the concept of sparse memory mappings, where we want to populate/discard dynamically and avoid expensive/problematic remappings. In addition, we never actually report errors during the final populate phase - it is best-effort only. fallocate() can be used to preallocate file-based memory and fail in a safe way. However, it cannot really be used for any private mappings on anonymous files via memfd due to COW semantics. In addition, fallocate() does not actually populate page tables, so we still always get pagefaults on first access - which is sometimes undesired (i.e., real-time workloads) and requires real prefaulting of page tables, not just a preallocation of backend storage. There might be interesting use cases for sparse memory regions along with mlockall(MCL_ONFAULT) which fallocate() cannot satisfy as it does not prefault page tables. II. On preallcoation/prefaulting from user space Because we don't have a proper interface, what applications (like QEMU and databases) end up doing is touching (i.e., reading+writing one byte to not overwrite existing data) all individual pages. However, that approach 1) Can result in wear on storage backing, because we end up reading/writing each page; this is especially a problem for dax/pmem. 2) Can result in mmap_sem contention when prefaulting via multiple threads. 3) Requires expensive signal handling, especially to catch SIGBUS in case of hugetlbfs/shmem/file-backed memory. For example, this is problematic in hypervisors like QEMU where SIGBUS handlers might already be used by other subsystems concurrently to e.g, handle hardware errors. "Simply" doing preallocation concurrently from other thread is not that easy. III. On MADV_WILLNEED Extending MADV_WILLNEED is not an option because 1. It would change the semantics: "Expect access in the near future." and "might be a good idea to read some pages" vs. "Definitely populate/ preallocate all memory and definitely fail on errors.". 2. Existing users (like virtio-balloon in QEMU when deflating the balloon) don't want populate/prealloc semantics. They treat this rather as a hint to give a little performance boost without too much overhead - and don't expect that a lot of memory might get consumed or a lot of time might be spent. IV. MADV_POPULATE_READ and MADV_POPULATE_WRITE Let's introduce MADV_POPULATE_READ and MADV_POPULATE_WRITE, inspired by MAP_POPULATE, with the following semantics: 1. MADV_POPULATE_READ can be used to prefault page tables just like manually reading each individual page. This will not break any COW mappings. The shared zero page might get mapped and no backend storage might get preallocated -- allocation might be deferred to write-fault time. Especially shared file mappings require an explicit fallocate() upfront to actually preallocate backend memory (blocks in the file system) in case the file might have holes. 2. If MADV_POPULATE_READ succeeds, all page tables have been populated (prefaulted) readable once. 3. MADV_POPULATE_WRITE can be used to preallocate backend memory and prefault page tables just like manually writing (or reading+writing) each individual page. This will break any COW mappings -- e.g., the shared zeropage is never populated. 4. If MADV_POPULATE_WRITE succeeds, all page tables have been populated (prefaulted) writable once. 5. MADV_POPULATE_READ and MADV_POPULATE_WRITE cannot be applied to special mappings marked with VM_PFNMAP and VM_IO. Also, proper access permissions (e.g., PROT_READ, PROT_WRITE) are required. If any such mapping is encountered, madvise() fails with -EINVAL. 6. If MADV_POPULATE_READ or MADV_POPULATE_WRITE fails, some page tables might have been populated. 7. MADV_POPULATE_READ and MADV_POPULATE_WRITE will return -EHWPOISON when encountering a HW poisoned page in the range. 8. Similar to MAP_POPULATE, MADV_POPULATE_READ and MADV_POPULATE_WRITE cannot protect from the OOM (Out Of Memory) handler killing the process. While the use case for MADV_POPULATE_WRITE is fairly obvious (i.e., preallocate memory and prefault page tables for VMs), one issue is that whenever we prefault pages writable, the pages have to be marked dirty, because the CPU could dirty them any time. while not a real problem for hugetlbfs or dax/pmem, it can be a problem for shared file mappings: each page will be marked dirty and has to be written back later when evicting. MADV_POPULATE_READ allows for optimizing this scenario: Pre-read a whole mapping from backend storage without marking it dirty, such that eviction won't have to write it back. As discussed above, shared file mappings might require an explciit fallocate() upfront to achieve preallcoation+prepopulation. Although sparse memory mappings are the primary use case, this will also be useful for other preallocate/prefault use cases where MAP_POPULATE is not desired or the semantics of MAP_POPULATE are not sufficient: as one example, QEMU users can trigger preallocation/prefaulting of guest RAM after the mapping was created -- and don't want errors to be silently suppressed. Looking at the history, MADV_POPULATE was already proposed in 2013 [1], however, the main motivation back than was performance improvements -- which should also still be the case. V. Single-threaded performance comparison I did a short experiment, prefaulting page tables on completely *empty mappings/files* and repeated the experiment 10 times. The results correspond to the shortest execution time. In general, the performance benefit for huge pages is negligible with small mappings. V.1: Private mappings POPULATE_READ and POPULATE_WRITE is fastest. Note that Reading/POPULATE_READ will populate the shared zeropage where applicable -- which result in short population times. The fastest way to allocate backend storage (here: swap or huge pages) and prefault page tables is POPULATE_WRITE. V.2: Shared mappings fallocate() is fastest, however, doesn't prefault page tables. POPULATE_WRITE is faster than simple writes and read/writes. POPULATE_READ is faster than simple reads. Without a fd, the fastest way to allocate backend storage and prefault page tables is POPULATE_WRITE. With an fd, the fastest way is usually FALLOCATE+POPULATE_READ or FALLOCATE+POPULATE_WRITE respectively; one exception are actual files: FALLOCATE+Read is slightly faster than FALLOCATE+POPULATE_READ. The fastest way to allocate backend storage prefault page tables is FALLOCATE+POPULATE_WRITE -- except when dealing with actual files; then, FALLOCATE+POPULATE_READ is fastest and won't directly mark all pages as dirty. v.3: Detailed results ================================================== 2 MiB MAP_PRIVATE: ************************************************** Anon 4 KiB : Read : 0.119 ms Anon 4 KiB : Write : 0.222 ms Anon 4 KiB : Read/Write : 0.380 ms Anon 4 KiB : POPULATE_READ : 0.060 ms Anon 4 KiB : POPULATE_WRITE : 0.158 ms Memfd 4 KiB : Read : 0.034 ms Memfd 4 KiB : Write : 0.310 ms Memfd 4 KiB : Read/Write : 0.362 ms Memfd 4 KiB : POPULATE_READ : 0.039 ms Memfd 4 KiB : POPULATE_WRITE : 0.229 ms Memfd 2 MiB : Read : 0.030 ms Memfd 2 MiB : Write : 0.030 ms Memfd 2 MiB : Read/Write : 0.030 ms Memfd 2 MiB : POPULATE_READ : 0.030 ms Memfd 2 MiB : POPULATE_WRITE : 0.030 ms tmpfs : Read : 0.033 ms tmpfs : Write : 0.313 ms tmpfs : Read/Write : 0.406 ms tmpfs : POPULATE_READ : 0.039 ms tmpfs : POPULATE_WRITE : 0.285 ms file : Read : 0.033 ms file : Write : 0.351 ms file : Read/Write : 0.408 ms file : POPULATE_READ : 0.039 ms file : POPULATE_WRITE : 0.290 ms hugetlbfs : Read : 0.030 ms hugetlbfs : Write : 0.030 ms hugetlbfs : Read/Write : 0.030 ms hugetlbfs : POPULATE_READ : 0.030 ms hugetlbfs : POPULATE_WRITE : 0.030 ms ************************************************** 4096 MiB MAP_PRIVATE: ************************************************** Anon 4 KiB : Read : 237.940 ms Anon 4 KiB : Write : 708.409 ms Anon 4 KiB : Read/Write : 1054.041 ms Anon 4 KiB : POPULATE_READ : 124.310 ms Anon 4 KiB : POPULATE_WRITE : 572.582 ms Memfd 4 KiB : Read : 136.928 ms Memfd 4 KiB : Write : 963.898 ms Memfd 4 KiB : Read/Write : 1106.561 ms Memfd 4 KiB : POPULATE_READ : 78.450 ms Memfd 4 KiB : POPULATE_WRITE : 805.881 ms Memfd 2 MiB : Read : 357.116 ms Memfd 2 MiB : Write : 357.210 ms Memfd 2 MiB : Read/Write : 357.606 ms Memfd 2 MiB : POPULATE_READ : 356.094 ms Memfd 2 MiB : POPULATE_WRITE : 356.937 ms tmpfs : Read : 137.536 ms tmpfs : Write : 954.362 ms tmpfs : Read/Write : 1105.954 ms tmpfs : POPULATE_READ : 80.289 ms tmpfs : POPULATE_WRITE : 822.826 ms file : Read : 137.874 ms file : Write : 987.025 ms file : Read/Write : 1107.439 ms file : POPULATE_READ : 80.413 ms file : POPULATE_WRITE : 857.622 ms hugetlbfs : Read : 355.607 ms hugetlbfs : Write : 355.729 ms hugetlbfs : Read/Write : 356.127 ms hugetlbfs : POPULATE_READ : 354.585 ms hugetlbfs : POPULATE_WRITE : 355.138 ms ************************************************** 2 MiB MAP_SHARED: ************************************************** Anon 4 KiB : Read : 0.394 ms Anon 4 KiB : Write : 0.348 ms Anon 4 KiB : Read/Write : 0.400 ms Anon 4 KiB : POPULATE_READ : 0.326 ms Anon 4 KiB : POPULATE_WRITE : 0.273 ms Anon 2 MiB : Read : 0.030 ms Anon 2 MiB : Write : 0.030 ms Anon 2 MiB : Read/Write : 0.030 ms Anon 2 MiB : POPULATE_READ : 0.030 ms Anon 2 MiB : POPULATE_WRITE : 0.030 ms Memfd 4 KiB : Read : 0.412 ms Memfd 4 KiB : Write : 0.372 ms Memfd 4 KiB : Read/Write : 0.419 ms Memfd 4 KiB : POPULATE_READ : 0.343 ms Memfd 4 KiB : POPULATE_WRITE : 0.288 ms Memfd 4 KiB : FALLOCATE : 0.137 ms Memfd 4 KiB : FALLOCATE+Read : 0.446 ms Memfd 4 KiB : FALLOCATE+Write : 0.330 ms Memfd 4 KiB : FALLOCATE+Read/Write : 0.454 ms Memfd 4 KiB : FALLOCATE+POPULATE_READ : 0.379 ms Memfd 4 KiB : FALLOCATE+POPULATE_WRITE : 0.268 ms Memfd 2 MiB : Read : 0.030 ms Memfd 2 MiB : Write : 0.030 ms Memfd 2 MiB : Read/Write : 0.030 ms Memfd 2 MiB : POPULATE_READ : 0.030 ms Memfd 2 MiB : POPULATE_WRITE : 0.030 ms Memfd 2 MiB : FALLOCATE : 0.030 ms Memfd 2 MiB : FALLOCATE+Read : 0.031 ms Memfd 2 MiB : FALLOCATE+Write : 0.031 ms Memfd 2 MiB : FALLOCATE+Read/Write : 0.031 ms Memfd 2 MiB : FALLOCATE+POPULATE_READ : 0.030 ms Memfd 2 MiB : FALLOCATE+POPULATE_WRITE : 0.030 ms tmpfs : Read : 0.416 ms tmpfs : Write : 0.369 ms tmpfs : Read/Write : 0.425 ms tmpfs : POPULATE_READ : 0.346 ms tmpfs : POPULATE_WRITE : 0.295 ms tmpfs : FALLOCATE : 0.139 ms tmpfs : FALLOCATE+Read : 0.447 ms tmpfs : FALLOCATE+Write : 0.333 ms tmpfs : FALLOCATE+Read/Write : 0.454 ms tmpfs : FALLOCATE+POPULATE_READ : 0.380 ms tmpfs : FALLOCATE+POPULATE_WRITE : 0.272 ms file : Read : 0.191 ms file : Write : 0.511 ms file : Read/Write : 0.524 ms file : POPULATE_READ : 0.196 ms file : POPULATE_WRITE : 0.434 ms file : FALLOCATE : 0.004 ms file : FALLOCATE+Read : 0.197 ms file : FALLOCATE+Write : 0.554 ms file : FALLOCATE+Read/Write : 0.480 ms file : FALLOCATE+POPULATE_READ : 0.201 ms file : FALLOCATE+POPULATE_WRITE : 0.381 ms hugetlbfs : Read : 0.030 ms hugetlbfs : Write : 0.030 ms hugetlbfs : Read/Write : 0.030 ms hugetlbfs : POPULATE_READ : 0.030 ms hugetlbfs : POPULATE_WRITE : 0.030 ms hugetlbfs : FALLOCATE : 0.030 ms hugetlbfs : FALLOCATE+Read : 0.031 ms hugetlbfs : FALLOCATE+Write : 0.031 ms hugetlbfs : FALLOCATE+Read/Write : 0.030 ms hugetlbfs : FALLOCATE+POPULATE_READ : 0.030 ms hugetlbfs : FALLOCATE+POPULATE_WRITE : 0.030 ms ************************************************** 4096 MiB MAP_SHARED: ************************************************** Anon 4 KiB : Read : 1053.090 ms Anon 4 KiB : Write : 913.642 ms Anon 4 KiB : Read/Write : 1060.350 ms Anon 4 KiB : POPULATE_READ : 893.691 ms Anon 4 KiB : POPULATE_WRITE : 782.885 ms Anon 2 MiB : Read : 358.553 ms Anon 2 MiB : Write : 358.419 ms Anon 2 MiB : Read/Write : 357.992 ms Anon 2 MiB : POPULATE_READ : 357.533 ms Anon 2 MiB : POPULATE_WRITE : 357.808 ms Memfd 4 KiB : Read : 1078.144 ms Memfd 4 KiB : Write : 942.036 ms Memfd 4 KiB : Read/Write : 1100.391 ms Memfd 4 KiB : POPULATE_READ : 925.829 ms Memfd 4 KiB : POPULATE_WRITE : 804.394 ms Memfd 4 KiB : FALLOCATE : 304.632 ms Memfd 4 KiB : FALLOCATE+Read : 1163.359 ms Memfd 4 KiB : FALLOCATE+Write : 933.186 ms Memfd 4 KiB : FALLOCATE+Read/Write : 1187.304 ms Memfd 4 KiB : FALLOCATE+POPULATE_READ : 1013.660 ms Memfd 4 KiB : FALLOCATE+POPULATE_WRITE : 794.560 ms Memfd 2 MiB : Read : 358.131 ms Memfd 2 MiB : Write : 358.099 ms Memfd 2 MiB : Read/Write : 358.250 ms Memfd 2 MiB : POPULATE_READ : 357.563 ms Memfd 2 MiB : POPULATE_WRITE : 357.334 ms Memfd 2 MiB : FALLOCATE : 356.735 ms Memfd 2 MiB : FALLOCATE+Read : 358.152 ms Memfd 2 MiB : FALLOCATE+Write : 358.331 ms Memfd 2 MiB : FALLOCATE+Read/Write : 358.018 ms Memfd 2 MiB : FALLOCATE+POPULATE_READ : 357.286 ms Memfd 2 MiB : FALLOCATE+POPULATE_WRITE : 357.523 ms tmpfs : Read : 1087.265 ms tmpfs : Write : 950.840 ms tmpfs : Read/Write : 1107.567 ms tmpfs : POPULATE_READ : 922.605 ms tmpfs : POPULATE_WRITE : 810.094 ms tmpfs : FALLOCATE : 306.320 ms tmpfs : FALLOCATE+Read : 1169.796 ms tmpfs : FALLOCATE+Write : 933.730 ms tmpfs : FALLOCATE+Read/Write : 1191.610 ms tmpfs : FALLOCATE+POPULATE_READ : 1020.474 ms tmpfs : FALLOCATE+POPULATE_WRITE : 798.945 ms file : Read : 654.101 ms file : Write : 1259.142 ms file : Read/Write : 1289.509 ms file : POPULATE_READ : 661.642 ms file : POPULATE_WRITE : 1106.816 ms file : FALLOCATE : 1.864 ms file : FALLOCATE+Read : 656.328 ms file : FALLOCATE+Write : 1153.300 ms file : FALLOCATE+Read/Write : 1180.613 ms file : FALLOCATE+POPULATE_READ : 668.347 ms file : FALLOCATE+POPULATE_WRITE : 996.143 ms hugetlbfs : Read : 357.245 ms hugetlbfs : Write : 357.413 ms hugetlbfs : Read/Write : 357.120 ms hugetlbfs : POPULATE_READ : 356.321 ms hugetlbfs : POPULATE_WRITE : 356.693 ms hugetlbfs : FALLOCATE : 355.927 ms hugetlbfs : FALLOCATE+Read : 357.074 ms hugetlbfs : FALLOCATE+Write : 357.120 ms hugetlbfs : FALLOCATE+Read/Write : 356.983 ms hugetlbfs : FALLOCATE+POPULATE_READ : 356.413 ms hugetlbfs : FALLOCATE+POPULATE_WRITE : 356.266 ms ************************************************** [1] https://lkml.org/lkml/2013/6/27/698 [akpm@linux-foundation.org: coding style fixes] Link: https://lkml.kernel.org/r/20210419135443.12822-3-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Michal Hocko <mhocko@suse.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Jann Horn <jannh@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@surriel.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Peter Xu <peterx@redhat.com> Cc: Rolf Eike Beer <eike-kernel@sf-tec.de> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-06-30 20:47:30 -07:00
Lee Jones	85adc860fd	Merge 6efb943b86 Linux 5.13-rc1 into android-mainline ... One giant leap, all the way up to 5.13-rc1 Also take the opportunity to re-align (a.k.a. fix a couple of previous merge conflict fix-up issues) which occurred during this merge-window. Fixes: 4797acfb9c ("Merge 16b3d0cf5b Merge tag 'sched-core-2021-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into android-mainline") Fixes: 92f282f338 ("Merge 8ca5297e7e Merge tag 'kconfig-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild into android-mainline") Signed-off-by: Lee Jones <lee.jones@linaro.org> Change-Id: Ie9389f595776e8f66bba6eaf0fa7a3587c6a5749	2021-05-15 09:09:01 +01:00
Ingo Molnar	f0953a1bba	mm: fix typos in comments ... Fix ~94 single-word typos in locking code comments, plus a few very obvious grammar mistakes. Link: https://lkml.kernel.org/r/20210322212624.GA1963421@gmail.com Link: https://lore.kernel.org/r/20210322205203.GB1959563@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Cc: Bhaskar Chowdhury <unixbhaskar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-05-07 00:26:35 -07:00
Greg Kroah-Hartman	6bb5c8b522	Merge 5.12-rc3 into android-mainline ... Linux 5.12-rc3 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ibc683be6a28885f39d477e3f86ec2ecd1a9e7e21	2021-03-15 08:48:29 +01:00
Suren Baghdasaryan	96cfe2c0fd	mm/madvise: replace ptrace attach requirement for process_madvise ... process_madvise currently requires ptrace attach capability. PTRACE_MODE_ATTACH gives one process complete control over another process. It effectively removes the security boundary between the two processes (in one direction). Granting ptrace attach capability even to a system process is considered dangerous since it creates an attack surface. This severely limits the usage of this API. The operations process_madvise can perform do not affect the correctness of the operation of the target process; they only affect where the data is physically located (and therefore, how fast it can be accessed). What we want is the ability for one process to influence another process in order to optimize performance across the entire system while leaving the security boundary intact. Replace PTRACE_MODE_ATTACH with a combination of PTRACE_MODE_READ and CAP_SYS_NICE. PTRACE_MODE_READ to prevent leaking ASLR metadata and CAP_SYS_NICE for influencing process performance. Link: https://lkml.kernel.org/r/20210303185807.2160264-1-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Minchan Kim <minchan@kernel.org> Acked-by: David Rientjes <rientjes@google.com> Cc: Jann Horn <jannh@google.com> Cc: Jeff Vander Stoep <jeffv@google.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Tim Murray <timmurray@google.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: James Morris <jmorris@namei.org> Cc: <stable@vger.kernel.org> [5.10+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2021-03-13 11:27:30 -08:00
Greg Kroah-Hartman	bbf615b8e1	Merge 7d6beb71da ("Merge tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux") into android-mainline ... Steps on the way to 5.12-rc1. Resolves conflicts in: fs/overlayfs/inode.c Note, incfs is broken here, will mark it as BROKEN in another patch to make it more obvious. Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I95a5938fc3cfa27d521c5d4fd18b2adfb13a6d84	2021-03-06 17:42:01 +01:00
Greg Kroah-Hartman	1e5781383b	Merge 657bd90c93 ("Merge tag 'sched-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip") into android-mainline ... Steps on the way to 5.12-rc1 Resolves conflicts in: kernel/sched/cpufreq_schedutil.c Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I06d90f919467f3e7e8970aaedbb872a10eb699ff	2021-03-03 15:29:15 +01:00
Linus Torvalds	7d6beb71da	Merge tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux ... Pull idmapped mounts from Christian Brauner: "This introduces idmapped mounts which has been in the making for some time. Simply put, different mounts can expose the same file or directory with different ownership. This initial implementation comes with ports for fat, ext4 and with Christoph's port for xfs with more filesystems being actively worked on by independent people and maintainers. Idmapping mounts handle a wide range of long standing use-cases. Here are just a few: - Idmapped mounts make it possible to easily share files between multiple users or multiple machines especially in complex scenarios. For example, idmapped mounts will be used in the implementation of portable home directories in systemd-homed.service(8) where they allow users to move their home directory to an external storage device and use it on multiple computers where they are assigned different uids and gids. This effectively makes it possible to assign random uids and gids at login time. - It is possible to share files from the host with unprivileged containers without having to change ownership permanently through chown(2). - It is possible to idmap a container's rootfs and without having to mangle every file. For example, Chromebooks use it to share the user's Download folder with their unprivileged containers in their Linux subsystem. - It is possible to share files between containers with non-overlapping idmappings. - Filesystem that lack a proper concept of ownership such as fat can use idmapped mounts to implement discretionary access (DAC) permission checking. - They allow users to efficiently changing ownership on a per-mount basis without having to (recursively) chown(2) all files. In contrast to chown (2) changing ownership of large sets of files is instantenous with idmapped mounts. This is especially useful when ownership of a whole root filesystem of a virtual machine or container is changed. With idmapped mounts a single syscall mount_setattr syscall will be sufficient to change the ownership of all files. - Idmapped mounts always take the current ownership into account as idmappings specify what a given uid or gid is supposed to be mapped to. This contrasts with the chown(2) syscall which cannot by itself take the current ownership of the files it changes into account. It simply changes the ownership to the specified uid and gid. This is especially problematic when recursively chown(2)ing a large set of files which is commong with the aforementioned portable home directory and container and vm scenario. - Idmapped mounts allow to change ownership locally, restricting it to specific mounts, and temporarily as the ownership changes only apply as long as the mount exists. Several userspace projects have either already put up patches and pull-requests for this feature or will do so should you decide to pull this: - systemd: In a wide variety of scenarios but especially right away in their implementation of portable home directories. https://systemd.io/HOME_DIRECTORY/ - container runtimes: containerd, runC, LXD:To share data between host and unprivileged containers, unprivileged and privileged containers, etc. The pull request for idmapped mounts support in containerd, the default Kubernetes runtime is already up for quite a while now: https://github.com/containerd/containerd/pull/4734 - The virtio-fs developers and several users have expressed interest in using this feature with virtual machines once virtio-fs is ported. - ChromeOS: Sharing host-directories with unprivileged containers. I've tightly synced with all those projects and all of those listed here have also expressed their need/desire for this feature on the mailing list. For more info on how people use this there's a bunch of talks about this too. Here's just two recent ones: https://www.cncf.io/wp-content/uploads/2020/12/Rootless-Containers-in-Gitpod.pdf https://fosdem.org/2021/schedule/event/containers_idmap/ This comes with an extensive xfstests suite covering both ext4 and xfs: https://git.kernel.org/brauner/xfstests-dev/h/idmapped_mounts It covers truncation, creation, opening, xattrs, vfscaps, setid execution, setgid inheritance and more both with idmapped and non-idmapped mounts. It already helped to discover an unrelated xfs setgid inheritance bug which has since been fixed in mainline. It will be sent for inclusion with the xfstests project should you decide to merge this. In order to support per-mount idmappings vfsmounts are marked with user namespaces. The idmapping of the user namespace will be used to map the ids of vfs objects when they are accessed through that mount. By default all vfsmounts are marked with the initial user namespace. The initial user namespace is used to indicate that a mount is not idmapped. All operations behave as before and this is verified in the testsuite. Based on prior discussions we want to attach the whole user namespace and not just a dedicated idmapping struct. This allows us to reuse all the helpers that already exist for dealing with idmappings instead of introducing a whole new range of helpers. In addition, if we decide in the future that we are confident enough to enable unprivileged users to setup idmapped mounts the permission checking can take into account whether the caller is privileged in the user namespace the mount is currently marked with. The user namespace the mount will be marked with can be specified by passing a file descriptor refering to the user namespace as an argument to the new mount_setattr() syscall together with the new MOUNT_ATTR_IDMAP flag. The system call follows the openat2() pattern of extensibility. The following conditions must be met in order to create an idmapped mount: - The caller must currently have the CAP_SYS_ADMIN capability in the user namespace the underlying filesystem has been mounted in. - The underlying filesystem must support idmapped mounts. - The mount must not already be idmapped. This also implies that the idmapping of a mount cannot be altered once it has been idmapped. - The mount must be a detached/anonymous mount, i.e. it must have been created by calling open_tree() with the OPEN_TREE_CLONE flag and it must not already have been visible in the filesystem. The last two points guarantee easier semantics for userspace and the kernel and make the implementation significantly simpler. By default vfsmounts are marked with the initial user namespace and no behavioral or performance changes are observed. The manpage with a detailed description can be found here: 1d7b902e28 In order to support idmapped mounts, filesystems need to be changed and mark themselves with the FS_ALLOW_IDMAP flag in fs_flags. The patches to convert individual filesystem are not very large or complicated overall as can be seen from the included fat, ext4, and xfs ports. Patches for other filesystems are actively worked on and will be sent out separately. The xfstestsuite can be used to verify that port has been done correctly. The mount_setattr() syscall is motivated independent of the idmapped mounts patches and it's been around since July 2019. One of the most valuable features of the new mount api is the ability to perform mounts based on file descriptors only. Together with the lookup restrictions available in the openat2() RESOLVE_* flag namespace which we added in v5.6 this is the first time we are close to hardened and race-free (e.g. symlinks) mounting and path resolution. While userspace has started porting to the new mount api to mount proper filesystems and create new bind-mounts it is currently not possible to change mount options of an already existing bind mount in the new mount api since the mount_setattr() syscall is missing. With the addition of the mount_setattr() syscall we remove this last restriction and userspace can now fully port to the new mount api, covering every use-case the old mount api could. We also add the crucial ability to recursively change mount options for a whole mount tree, both removing and adding mount options at the same time. This syscall has been requested multiple times by various people and projects. There is a simple tool available at https://github.com/brauner/mount-idmapped that allows to create idmapped mounts so people can play with this patch series. I'll add support for the regular mount binary should you decide to pull this in the following weeks: Here's an example to a simple idmapped mount of another user's home directory: u1001@f2-vm:/$ sudo ./mount --idmap both:1000:1001:1 /home/ubuntu/ /mnt u1001@f2-vm:/$ ls -al /home/ubuntu/ total 28 drwxr-xr-x 2 ubuntu ubuntu 4096 Oct 28 22:07 . drwxr-xr-x 4 root root 4096 Oct 28 04:00 .. -rw------- 1 ubuntu ubuntu 3154 Oct 28 22:12 .bash_history -rw-r--r-- 1 ubuntu ubuntu 220 Feb 25 2020 .bash_logout -rw-r--r-- 1 ubuntu ubuntu 3771 Feb 25 2020 .bashrc -rw-r--r-- 1 ubuntu ubuntu 807 Feb 25 2020 .profile -rw-r--r-- 1 ubuntu ubuntu 0 Oct 16 16:11 .sudo_as_admin_successful -rw------- 1 ubuntu ubuntu 1144 Oct 28 00:43 .viminfo u1001@f2-vm:/$ ls -al /mnt/ total 28 drwxr-xr-x 2 u1001 u1001 4096 Oct 28 22:07 . drwxr-xr-x 29 root root 4096 Oct 28 22:01 .. -rw------- 1 u1001 u1001 3154 Oct 28 22:12 .bash_history -rw-r--r-- 1 u1001 u1001 220 Feb 25 2020 .bash_logout -rw-r--r-- 1 u1001 u1001 3771 Feb 25 2020 .bashrc -rw-r--r-- 1 u1001 u1001 807 Feb 25 2020 .profile -rw-r--r-- 1 u1001 u1001 0 Oct 16 16:11 .sudo_as_admin_successful -rw------- 1 u1001 u1001 1144 Oct 28 00:43 .viminfo u1001@f2-vm:/$ touch /mnt/my-file u1001@f2-vm:/$ setfacl -m u:1001:rwx /mnt/my-file u1001@f2-vm:/$ sudo setcap -n 1001 cap_net_raw+ep /mnt/my-file u1001@f2-vm:/$ ls -al /mnt/my-file -rw-rwxr--+ 1 u1001 u1001 0 Oct 28 22:14 /mnt/my-file u1001@f2-vm:/$ ls -al /home/ubuntu/my-file -rw-rwxr--+ 1 ubuntu ubuntu 0 Oct 28 22:14 /home/ubuntu/my-file u1001@f2-vm:/$ getfacl /mnt/my-file getfacl: Removing leading '/' from absolute path names # file: mnt/my-file # owner: u1001 # group: u1001 user::rw- user:u1001:rwx group::rw- mask::rwx other::r-- u1001@f2-vm:/$ getfacl /home/ubuntu/my-file getfacl: Removing leading '/' from absolute path names # file: home/ubuntu/my-file # owner: ubuntu # group: ubuntu user::rw- user:ubuntu:rwx group::rw- mask::rwx other::r--" * tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: (41 commits) xfs: remove the possibly unused mp variable in xfs_file_compat_ioctl xfs: support idmapped mounts ext4: support idmapped mounts fat: handle idmapped mounts tests: add mount_setattr() selftests fs: introduce MOUNT_ATTR_IDMAP fs: add mount_setattr() fs: add attr_flags_to_mnt_flags helper fs: split out functions to hold writers namespace: only take read lock in do_reconfigure_mnt() mount: make {lock,unlock}_mount_hash() static namespace: take lock_mount_hash() directly when changing flags nfs: do not export idmapped mounts overlayfs: do not mount on top of idmapped mounts ecryptfs: do not mount on top of idmapped mounts ima: handle idmapped mounts apparmor: handle idmapped mounts fs: make helpers idmap mount aware exec: handle idmapped mounts would_dump: handle idmapped mounts ...	2021-02-23 13:39:45 -08:00
Will Deacon	a72afd8730	tlb: mmu_gather: Remove start/end arguments from tlb_gather_mmu() ... The 'start' and 'end' arguments to tlb_gather_mmu() are no longer needed now that there is a separate function for 'fullmm' flushing. Remove the unused arguments and update all callers. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Yu Zhao <yuzhao@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/CAHk-=wjQWa14_4UpfDf=fiineNP+RH74kZeDMo_f1D35xNzq9w@mail.gmail.com	2021-01-29 20:02:29 +01:00
Will Deacon	ae8eba8b5d	tlb: mmu_gather: Remove unused start/end arguments from tlb_finish_mmu() ... Since commit 7a30df49f6 ("mm: mmu_gather: remove __tlb_reset_range() for force flush"), the 'start' and 'end' arguments to tlb_finish_mmu() are no longer used, since we flush the whole mm in case of a nested invalidation. Remove the unused arguments and update all callers. Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Yu Zhao <yuzhao@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20210127235347.1402-3-will@kernel.org	2021-01-29 20:02:28 +01:00
Christian Brauner	21cb47be6f	inode: make init and permission helpers idmapped mount aware ... The inode_owner_or_capable() helper determines whether the caller is the owner of the inode or is capable with respect to that inode. Allow it to handle idmapped mounts. If the inode is accessed through an idmapped mount it according to the mount's user namespace. Afterwards the checks are identical to non-idmapped mounts. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Similarly, allow the inode_init_owner() helper to handle idmapped mounts. It initializes a new inode on idmapped mounts by mapping the fsuid and fsgid of the caller from the mount's user namespace. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Link: https://lore.kernel.org/r/20210121131959.646623-7-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jamorris@linux.microsoft.com> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>	2021-01-24 14:27:16 +01:00
Christian Brauner	02f92b3868	fs: add file and path permissions helpers ... Add two simple helpers to check permissions on a file and path respectively and convert over some callers. It simplifies quite a few codepaths and also reduces the churn in later patches quite a bit. Christoph also correctly points out that this makes codepaths (e.g. ioctls) way easier to follow that would otherwise have to do more complex argument passing than necessary. Link: https://lore.kernel.org/r/20210121131959.646623-4-christian.brauner@ubuntu.com Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Suggested-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jamorris@linux.microsoft.com> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>	2021-01-24 14:27:16 +01:00
Greg Kroah-Hartman	8c3b398d8c	Merge ac73e3dc8a ("Merge branch 'akpm' (patches from Andrew)") into android-mainline ... Steps on the way to 5.11-rc1 Change-Id: I23957617a1e123aa05d3c1d48ea24e6acd131bdd Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>	2020-12-17 07:57:30 +01:00
Oscar Salvador	1e8aaedb18	mm,memory_failure: always pin the page in madvise_inject_error ... madvise_inject_error() uses get_user_pages_fast to translate the address we specified to a page. After [1], we drop the extra reference count for memory_failure() path. That commit says that memory_failure wanted to keep the pin in order to take the page out of circulation. The truth is that we need to keep the page pinned, otherwise the page might be re-used after the put_page() and we can end up messing with someone else's memory. E.g: CPU0 process X CPU1 madvise_inject_error get_user_pages put_page page gets reclaimed process Y allocates the page memory_failure // We mess with process Y memory madvise() is meant to operate on a self address space, so messing with pages that do not belong to us seems the wrong thing to do. To avoid that, let us keep the page pinned for memory_failure as well. Pages for DAX mappings will release this extra refcount in memory_failure_dev_pagemap. [1] ("23e7b5c2e271: mm, madvise_inject_error: Let memory_failure() optionally take a page reference") Link: https://lkml.kernel.org/r/20201207094818.8518-1-osalvador@suse.de Fixes: 23e7b5c2e2 ("mm, madvise_inject_error: Let memory_failure() optionally take a page reference") Signed-off-by: Oscar Salvador <osalvador@suse.de> Suggested-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2020-12-15 12:13:44 -08:00
Oscar Salvador	32409cba3f	mm,hwpoison: drop unneeded pcplist draining ... memory_failure and soft_offline_path paths now drain pcplists by calling get_hwpoison_page. memory_failure flags the page as HWPoison before, so that page cannot longer go into a pcplist, and soft_offline_page only flags a page as HWPoison if 1) we took the page off a buddy freelist 2) the page was in-use and we migrated it 3) was a clean pagecache. Because of that, a page cannot longer be poisoned and be in a pcplist. Link: https://lkml.kernel.org/r/20201013144447.6706-5-osalvador@suse.de Signed-off-by: Oscar Salvador <osalvador@suse.de> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2020-12-15 12:13:44 -08:00
Greg Kroah-Hartman	4de82f1b3b	Merge a68a0262ab ("mm/madvise: remove racy mm ownership check") into android-mainline ... Steps on the way to 5.10-rc8/final Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I0d1e2f396425894a7c2e9a2680edf763a223c644	2020-12-10 11:34:58 +01:00
Minchan Kim	a68a0262ab	mm/madvise: remove racy mm ownership check ... Jann spotted the security hole due to race of mm ownership check. If the task is sharing the mm_struct but goes through execve() before mm_access(), it could skip process_madvise_behavior_valid check. That makes *any advice hint* to reach into the remote process. This patch removes the mm ownership check. With it, it will lose the ability that local process could give *any* advice hint with vector interface for some reason (e.g., performance). Since there is no concrete example in upstream yet, it would be better to remove the abiliity at this moment and need to review when such new advice comes up. Fixes: ecb8ac8b1f ("mm/madvise: introduce process_madvise() syscall: an external memory hinting API") Reported-by: Jann Horn <jannh@google.com> Suggested-by: Jann Horn <jannh@google.com> Signed-off-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2020-12-08 20:57:18 -08:00
Greg Kroah-Hartman	5acba58e59	Merge 5.10-rc5 into android-mainline ... Linux 5.10-rc5 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ia5b23cceb3e0212c1c841f1297ecfab65cc9aaa6	2020-11-23 08:17:16 +01:00
Matthew Wilcox (Oracle)	66383800df	mm: fix madvise WILLNEED performance problem ... The calculation of the end page index was incorrect, leading to a regression of 70% when running stress-ng. With this fix, we instead see a performance improvement of 3%. Fixes: e6e88712e4 ("mm: optimise madvise WILLNEED") Reported-by: kernel test robot <rong.a.chen@intel.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Xing Zhengjun <zhengjun.xing@linux.intel.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: William Kucharski <william.kucharski@oracle.com> Cc: Feng Tang <feng.tang@intel.com> Cc: "Chen, Rong A" <rong.a.chen@intel.com> Link: https://lkml.kernel.org/r/20201109134851.29692-1-willy@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2020-11-22 10:48:22 -08:00
Eric Dumazet	450677dcb0	mm/madvise: fix memory leak from process_madvise ... The early return in process_madvise() will produce a memory leak. Fix it. Fixes: ecb8ac8b1f ("mm/madvise: introduce process_madvise() syscall: an external memory hinting API") Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: https://lkml.kernel.org/r/20201116155132.GA3805951@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2020-11-22 10:48:22 -08:00
Greg Kroah-Hartman	b3dd1b5952	Merge 922a763ae1 ("Merge tag 'zonefs-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs") into android-mainline ... Steps on the way to 5.10-rc1 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I520719ae5e0d992c3756e393cb299d77d650622e	2020-10-26 10:08:43 +01:00
Greg Kroah-Hartman	05d2a661fd	Merge 54a4c789ca ("Merge tag 'docs/v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media") into android-mainline ... Steps on the way to 5.10-rc1 Resolves conflicts in: fs/userfaultfd.c Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ie3fe3c818f1f6565cfd4fa551de72d2b72ef60af	2020-10-26 09:23:33 +01:00