- 07 Oct, 2021 4 commits
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Vincenzo Frascino authored
MTE provides an asymmetric mode for detecting tag exceptions. In particular, when such a mode is present, the CPU triggers a fault on a tag mismatch during a load operation and asynchronously updates a register when a tag mismatch is detected during a store operation. Add support for MTE asymmetric mode. Note: If the CPU does not support MTE asymmetric mode the kernel falls back on synchronous mode which is the default for kasan=on. Cc: Will Deacon <will@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Andrey Konovalov <andreyknvl@gmail.com> Link: https://lore.kernel.org/r/20211006154751.4463-5-vincenzo.frascino@arm.comSigned-off-by: Will Deacon <will@kernel.org>
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Vincenzo Frascino authored
Add the cpufeature entries to detect the presence of Asymmetric MTE. Note: The tag checking mode is initialized via cpu_enable_mte() -> kasan_init_hw_tags() hence to enable it we require asymmetric mode to be at least on the boot CPU. If the boot CPU does not have it, it is fine for late CPUs to have it as long as the feature is not enabled (ARM64_CPUCAP_BOOT_CPU_FEATURE). Cc: Will Deacon <will@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Suzuki K Poulose <Suzuki.Poulose@arm.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20211006154751.4463-4-vincenzo.frascino@arm.comSigned-off-by: Will Deacon <will@kernel.org>
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Vincenzo Frascino authored
Add Asymmetric Memory Tagging Extension bitfield definitions. Cc: Will Deacon <will@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20211006154751.4463-3-vincenzo.frascino@arm.comSigned-off-by: Will Deacon <will@kernel.org>
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Vincenzo Frascino authored
After merging async mode for KASAN_HW_TAGS a duplicate of the kasan_flag_async flag was left erroneously inside the code. Remove the duplicate. Note: This change does not bring functional changes to the code base. Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Marco Elver <elver@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Link: https://lore.kernel.org/r/20211006154751.4463-2-vincenzo.frascino@arm.comSigned-off-by: Will Deacon <will@kernel.org>
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- 29 Sep, 2021 1 commit
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Peter Collingbourne authored
It is not necessary to write to GCR_EL1 on every kernel entry and exit when HW tag-based KASAN is disabled because the kernel will not execute any IRG instructions in that mode. Since accessing GCR_EL1 can be expensive on some microarchitectures, avoid doing so by moving the access to task switch when HW tag-based KASAN is disabled. Signed-off-by: Peter Collingbourne <pcc@google.com> Acked-by: Andrey Konovalov <andreyknvl@gmail.com> Link: https://linux-review.googlesource.com/id/I78e90d60612a94c24344526f476ac4ff216e10d2Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20210924010655.2886918-1-pcc@google.comSigned-off-by: Will Deacon <will@kernel.org>
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- 26 Sep, 2021 7 commits
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Linus Torvalds authored
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git://git.samba.org/ksmbdLinus Torvalds authored
Pull ksmbd fixes from Steve French: "Five fixes for the ksmbd kernel server, including three security fixes: - remove follow symlinks support - use LOOKUP_BENEATH to prevent out of share access - SMB3 compounding security fix - fix for returning the default streams correctly, fixing a bug when writing ppt or doc files from some clients - logging more clearly that ksmbd is experimental (at module load time)" * tag '5.15-rc2-ksmbd-fixes' of git://git.samba.org/ksmbd: ksmbd: use LOOKUP_BENEATH to prevent the out of share access ksmbd: remove follow symlinks support ksmbd: check protocol id in ksmbd_verify_smb_message() ksmbd: add default data stream name in FILE_STREAM_INFORMATION ksmbd: log that server is experimental at module load
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/rasLinus Torvalds authored
Pull EDAC fixes from Borislav Petkov: "Fix two EDAC drivers using the wrong value type for the DIMM mode" * tag 'edac_urgent_for_v5.15_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: EDAC/dmc520: Assign the proper type to dimm->edac_mode EDAC/synopsys: Fix wrong value type assignment for edac_mode
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git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linuxLinus Torvalds authored
Pull thermal fixes from Daniel Lezcano: - Fix thermal shutdown after a suspend/resume due to a wrong TCC value restored on Intel platform (Antoine Tenart) - Fix potential buffer overflow when building the list of policies. The buffer size is not updated after writing to it (Dan Carpenter) - Fix wrong check against IS_ERR instead of NULL (Ansuel Smith) * tag 'thermal-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: thermal/drivers/tsens: Fix wrong check for tzd in irq handlers thermal/core: Potential buffer overflow in thermal_build_list_of_policies() thermal/drivers/int340x: Do not set a wrong tcc offset on resume
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A set of fixes for X86: - Prevent sending the wrong signal when protection keys are enabled and the kernel handles a fault in the vsyscall emulation. - Invoke early_reserve_memory() before invoking e820_memory_setup() which is required to make the Xen dom0 e820 hooks work correctly. - Use the correct data type for the SETZ operand in the EMQCMDS instruction wrapper. - Prevent undefined behaviour to the potential unaligned accesss in the instruction decoder library" * tag 'x86-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/insn, tools/x86: Fix undefined behavior due to potential unaligned accesses x86/asm: Fix SETZ size enqcmds() build failure x86/setup: Call early_reserve_memory() earlier x86/fault: Fix wrong signal when vsyscall fails with pkey
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fix from Thomas Gleixner: "A single fix for the recently introduced regression in posix CPU timers which failed to stop the timer when requested. That caused unexpected signals to be sent to the process/thread causing malfunction" * tag 'timers-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: posix-cpu-timers: Prevent spuriously armed 0-value itimer
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Thomas Gleixner: "A set of fixes for interrupt chip drivers: - Work around a bad GIC integration on a Renesas platform which can't handle byte-sized MMIO access - Plug a potential memory leak in the GICv4 driver - Fix a regression in the Armada 370-XP IPI code which was caused by issuing EOI instack of ACK. - A couple of small fixes here and there" * tag 'irq-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/gic: Work around broken Renesas integration irqchip/renesas-rza1: Use semicolons instead of commas irqchip/gic-v3-its: Fix potential VPE leak on error irqchip/goldfish-pic: Select GENERIC_IRQ_CHIP to fix build irqchip/mbigen: Repair non-kernel-doc notation irqdomain: Change the type of 'size' in __irq_domain_add() to be consistent irqchip/armada-370-xp: Fix ack/eoi breakage Documentation: Fix irq-domain.rst build warning
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- 25 Sep, 2021 13 commits
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Linus Torvalds authored
Merge misc fixes from Andrew Morton: "16 patches. Subsystems affected by this patch series: xtensa, sh, ocfs2, scripts, lib, and mm (memory-failure, kasan, damon, shmem, tools, pagecache, debug, and pagemap)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm: fix uninitialized use in overcommit_policy_handler mm/memory_failure: fix the missing pte_unmap() call kasan: always respect CONFIG_KASAN_STACK sh: pgtable-3level: fix cast to pointer from integer of different size mm/debug: sync up latest migrate_reason to migrate_reason_names mm/debug: sync up MR_CONTIG_RANGE and MR_LONGTERM_PIN mm: fs: invalidate bh_lrus for only cold path lib/zlib_inflate/inffast: check config in C to avoid unused function warning tools/vm/page-types: remove dependency on opt_file for idle page tracking scripts/sorttable: riscv: fix undeclared identifier 'EM_RISCV' error ocfs2: drop acl cache for directories too mm/shmem.c: fix judgment error in shmem_is_huge() xtensa: increase size of gcc stack frame check mm/damon: don't use strnlen() with known-bogus source length kasan: fix Kconfig check of CC_HAS_WORKING_NOSANITIZE_ADDRESS mm, hwpoison: add is_free_buddy_page() in HWPoisonHandlable()
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Thirty-three fixes, I'm afraid. Essentially the build up from the last couple of weeks while I've been dealling with Linux Plumbers conference infrastructure issues. It's mostly the usual assortment of spelling fixes and minor corrections. The only core relevant changes are to the sd driver to reduce the spin up message spew and fix a small memory leak on the freeing path" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (33 commits) scsi: ses: Retry failed Send/Receive Diagnostic commands scsi: target: Fix spelling mistake "CONFLIFT" -> "CONFLICT" scsi: lpfc: Fix gcc -Wstringop-overread warning, again scsi: lpfc: Use correct scnprintf() limit scsi: lpfc: Fix sprintf() overflow in lpfc_display_fpin_wwpn() scsi: core: Remove 'current_tag' scsi: acornscsi: Remove tagged queuing vestiges scsi: fas216: Kill scmd->tag scsi: qla2xxx: Restore initiator in dual mode scsi: ufs: core: Unbreak the reset handler scsi: sd_zbc: Support disks with more than 2**32 logical blocks scsi: ufs: core: Revert "scsi: ufs: Synchronize SCSI and UFS error handling" scsi: bsg: Fix device unregistration scsi: sd: Make sd_spinup_disk() less noisy scsi: ufs: ufs-pci: Fix Intel LKF link stability scsi: mpt3sas: Clean up some inconsistent indenting scsi: megaraid: Clean up some inconsistent indenting scsi: sr: Fix spelling mistake "does'nt" -> "doesn't" scsi: Remove SCSI CDROM MAINTAINERS entry scsi: megaraid: Fix Coccinelle warning ...
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull io_uring fixes from Jens Axboe: "This one looks a bit bigger than it is, but that's mainly because 2/3 of it is enabling IORING_OP_CLOSE to close direct file descriptors. We've had a few folks using them and finding it confusing that the way to close them is through using -1 for file update, this just brings API symmetry for direct descriptors. Hence I think we should just do this now and have a better API for 5.15 release. There's some room for de-duplicating the close code, but we're leaving that for the next merge window. Outside of that, just small fixes: - Poll race fixes (Hao) - io-wq core dump exit fix (me) - Reschedule around potentially intensive tctx and buffer iterators on teardown (me) - Fix for always ending up punting files update to io-wq (me) - Put the provided buffer meta data under memcg accounting (me) - Tweak for io_write(), removing dead code that was added with the iterator changes in this release (Pavel)" * tag 'io_uring-5.15-2021-09-25' of git://git.kernel.dk/linux-block: io_uring: make OP_CLOSE consistent with direct open io_uring: kill extra checks in io_write() io_uring: don't punt files update to io-wq unconditionally io_uring: put provided buffer meta data under memcg accounting io_uring: allow conditional reschedule for intensive iterators io_uring: fix potential req refcount underflow io_uring: fix missing set of EPOLLONESHOT for CQ ring overflow io_uring: fix race between poll completion and cancel_hash insertion io-wq: ensure we exit if thread group is exiting
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: - NVMe pull request via Christoph: - keep ctrl->namespaces ordered (Christoph Hellwig) - fix incorrect h2cdata pdu offset accounting in nvme-tcp (Sagi Grimberg) - handled updated hw_queues in nvme-fc more carefully (Daniel Wagner, James Smart) - md lock order fix (Christoph) - fallocate locking fix (Ming) - blktrace UAF fix (Zhihao) - rq-qos bio tracking fix (Ming) * tag 'block-5.15-2021-09-25' of git://git.kernel.dk/linux-block: block: hold ->invalidate_lock in blkdev_fallocate blktrace: Fix uaf in blk_trace access after removing by sysfs block: don't call rq_qos_ops->done_bio if the bio isn't tracked md: fix a lock order reversal in md_alloc nvme: keep ctrl->namespaces ordered nvme-tcp: fix incorrect h2cdata pdu offset accounting nvme-fc: remove freeze/unfreeze around update_nr_hw_queues nvme-fc: avoid race between time out and tear down nvme-fc: update hardware queues before using them
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen fixes from Juergen Gross: "Some minor cleanups and fixes of some theoretical bugs, as well as a fix of a bug introduced in 5.15-rc1" * tag 'for-linus-5.15b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/x86: fix PV trap handling on secondary processors xen/balloon: fix balloon kthread freezing swiotlb-xen: this is PV-only on x86 xen/pci-swiotlb: reduce visibility of symbols PCI: only build xen-pcifront in PV-enabled environments swiotlb-xen: ensure to issue well-formed XENMEM_exchange requests Xen/gntdev: don't ignore kernel unmapping error xen/x86: drop redundant zeroing from cpu_initialize_context()
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Linus Torvalds authored
Merge tag 'linux-kselftest-fixes-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest fixes from Shuah Khan: - fix to Kselftest common framework header install to run before other targets for it work correctly in parallel build case. - fixes to kvm test to not ignore fscanf() returns which could result in inconsistent test behavior and failures. * tag 'linux-kselftest-fixes-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests: kvm: fix get_run_delay() ignoring fscanf() return warn selftests: kvm: move get_run_delay() into lib/test_util selftests:kvm: fix get_trans_hugepagesz() ignoring fscanf() return warn selftests:kvm: fix get_warnings_count() ignoring fscanf() return warn selftests: be sure to make khdr before other targets
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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofsLinus Torvalds authored
Pull erofs fixes from Gao Xiang: "Two bugfixes to fix the 4KiB blockmap chunk format availability and a dangling pointer usage. There is also a trivial cleanup to clarify compacted_2b if compacted_4b_initial > totalidx. Summary: - fix the dangling pointer use in erofs_lookup tracepoint - fix unsupported chunk format check - zero out compacted_2b if compacted_4b_initial > totalidx" * tag 'erofs-for-5.15-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: erofs: clear compacted_2b if compacted_4b_initial > totalidx erofs: fix misbehavior of unsupported chunk format check erofs: fix up erofs_lookup tracepoint
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs fixes from Steve French: "Six small cifs/smb3 fixes, two for stable: - important fix for deferred close (found by a git functional test) related to attribute caching on close. - four (two cosmetic, two more serious) small fixes for problems pointed out by smatch via Dan Carpenter - fix for comment formatting problems pointed out by W=1" * tag '5.15-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: cifs: fix incorrect check for null pointer in header_assemble smb3: correct server pointer dereferencing check to be more consistent smb3: correct smb3 ACL security descriptor cifs: Clear modified attribute bit from inode flags cifs: Deal with some warnings from W=1 cifs: fix a sign extension bug
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds authored
Pull char/misc driver fixes from Greg KH: "Here are some small char and misc driver fixes for 5.15-rc3. Nothing huge in here, just fixes for a number of small issues that have been reported. These include: - habanalabs race conditions and other bugs fixed - binder driver fixes - fpga driver fixes - coresight build warning fix - nvmem driver fix - comedi memory leak fix - bcm-vk tty race fix - other tiny driver fixes All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (21 commits) comedi: Fix memory leak in compat_insnlist() nvmem: NVMEM_NINTENDO_OTP should depend on WII misc: bcm-vk: fix tty registration race fpga: dfl: Avoid reads to AFU CSRs during enumeration fpga: machxo2-spi: Fix missing error code in machxo2_write_complete() fpga: machxo2-spi: Return an error on failure habanalabs: expose a single cs seq in staged submissions habanalabs: fix wait offset handling habanalabs: rate limit multi CS completion errors habanalabs/gaudi: fix LBW RR configuration habanalabs: Fix spelling mistake "FEADBACK" -> "FEEDBACK" habanalabs: fail collective wait when not supported habanalabs/gaudi: use direct MSI in single mode habanalabs: fix kernel OOPs related to staged cs habanalabs: fix potential race in interrupt wait ioctl mcb: fix error handling in mcb_alloc_bus() misc: genwqe: Fixes DMA mask setting coresight: syscfg: Fix compiler warning nvmem: core: Add stubs for nvmem_cell_read_variable_le_u32/64 if !CONFIG_NVMEM binder: make sure fd closes complete ...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds authored
Pull staging driver fixes from Greg KH: "Here are two small staging driver fixes for 5.15-rc3: - greybus tty use-after-free bugfix - r8188eu ioctl overlap build warning fix Note, the r8188eu ioctl has been entirely removed for 5.16-rc1, but it's good to get this fixed now for people using this in 5.15. Both of these have been in linux-next for a while with no reported issues" * tag 'staging-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: r8188eu: fix -Wrestrict warnings staging: greybus: uart: fix tty use after free
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds authored
Pull tty/serial fixes from Greg KH: "Here are four small tty/serial driver fixes for 5.15-rc3. They include: - remove an export now that no one is using it anymore - mvebu-uart tx_empty callback fix - 8250_omap bugfix - synclink_gt build fix All of these have been in linux-next for a while with no reported issues" * tag 'tty-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: tty: unexport tty_ldisc_release tty: synclink_gt: rename a conflicting function name serial: mvebu-uart: fix driver's tx_empty callback serial: 8250: 8250_omap: Fix RX_LVL register offset
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB driver fixes from Greg KH: "Here are some USB driver fixes and new device ids for 5.15-rc3. They include: - usb-storage quirk additions - usb-serial new device ids - usb-serial driver fixes - USB roothub registration bugfix to resolve a long-reported issue - usb gadget driver fixes for a large number of small things - dwc2 driver fixes All of these have been in linux-next for a while with no reported issues" * tag 'usb-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (28 commits) USB: serial: option: add device id for Foxconn T99W265 USB: serial: cp210x: add ID for GW Instek GDM-834x Digital Multimeter USB: serial: cp210x: add part-number debug printk USB: serial: cp210x: fix dropped characters with CP2102 MAINTAINERS: usb, update Peter Korsgaard's entries usb: musb: tusb6010: uninitialized data in tusb_fifo_write_unaligned() usb-storage: Add quirk for ScanLogic SL11R-IDE older than 2.6c Re-enable UAS for LaCie Rugged USB3-FW with fk quirk USB: serial: option: remove duplicate USB device ID USB: serial: mos7840: remove duplicated 0xac24 device ID arm64: dts: qcom: ipq8074: remove USB tx-fifo-resize property usb: gadget: f_uac2: Populate SS descriptors' wBytesPerInterval usb: gadget: f_uac2: Add missing companion descriptor for feedback EP usb: dwc2: gadget: Fix ISOC transfer complete handling for DDMA usb: core: hcd: Modularize HCD stop configuration in usb_stop_hcd() xhci: Set HCD flag to defer primary roothub registration usb: core: hcd: Add support for deferring roothub registration usb: dwc2: gadget: Fix ISOC flow for BDMA and Slave usb: dwc3: core: balance phy init and exit Revert "USB: bcma: Add a check for devm_gpiod_get" ...
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Hyunchul Lee authored
instead of removing '..' in a given path, call kern_path with LOOKUP_BENEATH flag to prevent the out of share access. ran various test on this: smb2-cat-async smb://127.0.0.1/homes/../out_of_share smb2-cat-async smb://127.0.0.1/homes/foo/../../out_of_share smbclient //127.0.0.1/homes -c "mkdir ../foo2" smbclient //127.0.0.1/homes -c "rename bar ../bar" Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com> Cc: Ralph Boehme <slow@samba.org> Tested-by: Steve French <smfrench@gmail.com> Tested-by: Namjae Jeon <linkinjeon@kernel.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Steve French <stfrench@microsoft.com>
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- 24 Sep, 2021 15 commits
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Chen Jun authored
We get an unexpected value of /proc/sys/vm/overcommit_memory after running the following program: int main() { int fd = open("/proc/sys/vm/overcommit_memory", O_RDWR); write(fd, "1", 1); write(fd, "2", 1); close(fd); } write(fd, "2", 1) will pass *ppos = 1 to proc_dointvec_minmax. proc_dointvec_minmax will return 0 without setting new_policy. t.data = &new_policy; ret = proc_dointvec_minmax(&t, write, buffer, lenp, ppos) -->do_proc_dointvec -->__do_proc_dointvec if (write) { if (proc_first_pos_non_zero_ignore(ppos, table)) goto out; sysctl_overcommit_memory = new_policy; so sysctl_overcommit_memory will be set to an uninitialized value. Check whether new_policy has been changed by proc_dointvec_minmax. Link: https://lkml.kernel.org/r/20210923020524.13289-1-chenjun102@huawei.com Fixes: 56f3547b ("mm: adjust vm_committed_as_batch according to vm overcommit policy") Signed-off-by: Chen Jun <chenjun102@huawei.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Feng Tang <feng.tang@intel.com> Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Rui Xiang <rui.xiang@huawei.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Qi Zheng authored
The paired pte_unmap() call is missing before the dev_pagemap_mapping_shift() returns. So fix it. David says: "I guess this code never runs on 32bit / highmem, that's why we didn't notice so far". [akpm@linux-foundation.org: cleanup] Link: https://lkml.kernel.org/r/20210923122642.4999-1-zhengqi.arch@bytedance.comSigned-off-by: Qi Zheng <zhengqi.arch@bytedance.com> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Nathan Chancellor authored
Currently, the asan-stack parameter is only passed along if CFLAGS_KASAN_SHADOW is not empty, which requires KASAN_SHADOW_OFFSET to be defined in Kconfig so that the value can be checked. In RISC-V's case, KASAN_SHADOW_OFFSET is not defined in Kconfig, which means that asan-stack does not get disabled with clang even when CONFIG_KASAN_STACK is disabled, resulting in large stack warnings with allmodconfig: drivers/video/fbdev/omap2/omapfb/displays/panel-lgphilips-lb035q02.c:117:12: error: stack frame size (14400) exceeds limit (2048) in function 'lb035q02_connect' [-Werror,-Wframe-larger-than] static int lb035q02_connect(struct omap_dss_device *dssdev) ^ 1 error generated. Ensure that the value of CONFIG_KASAN_STACK is always passed along to the compiler so that these warnings do not happen when CONFIG_KASAN_STACK is disabled. Link: https://github.com/ClangBuiltLinux/linux/issues/1453 References: 6baec880 ("kasan: turn off asan-stack for clang-8 and earlier") Link: https://lkml.kernel.org/r/20210922205525.570068-1-nathan@kernel.orgSigned-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Geert Uytterhoeven authored
If X2TLB=y (CPU_SHX2=y or CPU_SHX3=y, e.g. migor_defconfig), pgd_t.pgd is "unsigned long long", causing: In file included from arch/sh/include/asm/pgtable.h:13, from include/linux/pgtable.h:6, from include/linux/mm.h:33, from arch/sh/kernel/asm-offsets.c:14: arch/sh/include/asm/pgtable-3level.h: In function `pud_pgtable': arch/sh/include/asm/pgtable-3level.h:37:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 37 | return (pmd_t *)pud_val(pud); | ^ Fix this by adding an intermediate cast to "unsigned long", which is basically what the old code did before. Link: https://lkml.kernel.org/r/2c2eef3c9a2f57e5609100a4864715ccf253d30f.1631713483.git.geert+renesas@glider.be Fixes: 9cf6fa24 ("mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Daniel Palmer <daniel@thingy.jp> Acked-by: Rob Landley <rob@landley.net> Cc: Yoshinori Sato <ysato@users.osdn.me> Cc: Rich Felker <dalias@libc.org> Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com> Cc: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Weizhao Ouyang authored
Sync up MR_DEMOTION to migrate_reason_names and add a synch prompt. Link: https://lkml.kernel.org/r/20210921064553.293905-3-o451686892@gmail.com Fixes: 26aa2d19 ("mm/migrate: demote pages during reclaim") Signed-off-by: Weizhao Ouyang <o451686892@gmail.com> Reviewed-by: "Huang, Ying" <ying.huang@intel.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Yang Shi <yang.shi@linux.alibaba.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Mina Almasry <almasrymina@google.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: Wei Xu <weixugc@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Weizhao Ouyang authored
Sync up MR_CONTIG_RANGE and MR_LONGTERM_PIN to migrate_reason_names. Link: https://lkml.kernel.org/r/20210921064553.293905-2-o451686892@gmail.com Fixes: 31025351 ("mm/migrate: rename migration reason MR_CMA to MR_CONTIG_RANGE") Fixes: d1e153fe ("mm/gup: migrate pinned pages out of movable zone") Signed-off-by: Weizhao Ouyang <o451686892@gmail.com> Reviewed-by: "Huang, Ying" <ying.huang@intel.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Yang Shi <yang.shi@linux.alibaba.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Mina Almasry <almasrymina@google.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: Wei Xu <weixugc@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Minchan Kim authored
The kernel test robot reported the regression of fio.write_iops[1] with commit 8cc621d2 ("mm: fs: invalidate BH LRU during page migration"). Since lru_add_drain is called frequently, invalidate bh_lrus there could increase bh_lrus cache miss ratio, which needs more IO in the end. This patch moves the bh_lrus invalidation from the hot path( e.g., zap_page_range, pagevec_release) to cold path(i.e., lru_add_drain_all, lru_cache_disable). Zhengjun Xing confirmed "I test the patch, the regression reduced to -2.9%" [1] https://lore.kernel.org/lkml/20210520083144.GD14190@xsang-OptiPlex-9020/ [2] 8cc621d2, mm: fs: invalidate BH LRU during page migration Link: https://lkml.kernel.org/r/20210907212347.1977686-1-minchan@kernel.orgSigned-off-by: Minchan Kim <minchan@kernel.org> Reported-by: kernel test robot <oliver.sang@intel.com> Reviewed-by: Chris Goldsworthy <cgoldswo@codeaurora.org> Tested-by: "Xing, Zhengjun" <zhengjun.xing@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Paul Menzel authored
Building Linux for ppc64le with Ubuntu clang version 12.0.0-3ubuntu1~21.04.1 shows the warning below. arch/powerpc/boot/inffast.c:20:1: warning: unused function 'get_unaligned16' [-Wunused-function] get_unaligned16(const unsigned short *p) ^ 1 warning generated. Fix it by moving the check from the preprocessor to C, so the compiler sees the use. Link: https://lkml.kernel.org/r/20210920084332.5752-1-pmenzel@molgen.mpg.deSigned-off-by: Paul Menzel <pmenzel@molgen.mpg.de> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Zhen Lei <thunder.leizhen@huawei.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Changbin Du authored
Idle page tracking can also be used for process address space, not only file mappings. Without this change, using with '-i' option for process address space encounters below errors reported. $ sudo ./page-types -p $(pidof bash) -i mark page idle: Bad file descriptor mark page idle: Bad file descriptor mark page idle: Bad file descriptor mark page idle: Bad file descriptor ... Link: https://lkml.kernel.org/r/20210917032826.10669-1-changbin.du@gmail.comSigned-off-by: Changbin Du <changbin.du@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Miles Chen authored
Fix the following build failure reported in [1] by adding a conditional definition of EM_RISCV in order to allow cross-compilation on machines which do not have EM_RISCV definition in their host. scripts/sorttable.c:352:7: error: use of undeclared identifier 'EM_RISCV' EM_RISCV was added to <elf.h> in glibc 2.24 so builds on systems with glibc headers < 2.24 should show this error. [mkubecek@suse.cz: changelog addition] Link: https://lore.kernel.org/lkml/e8965b25-f15b-c7b4-748c-d207dda9c8e8@i2se.com/ [1] Link: https://lkml.kernel.org/r/20210913030625.4525-1-miles.chen@mediatek.com Fixes: 54fed35f ("riscv: Enable BUILDTIME_TABLE_SORT") Signed-off-by: Miles Chen <miles.chen@mediatek.com> Reported-by: Stefan Wahren <stefan.wahren@i2se.com> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Jisheng Zhang <jszhang@kernel.org> Cc: Michal Kubecek <mkubecek@suse.cz> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Markus Mayer <mmayer@broadcom.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Wengang Wang authored
ocfs2_data_convert_worker() is currently dropping any cached acl info for FILE before down-converting meta lock. It should also drop for DIRECTORY. Otherwise the second acl lookup returns the cached one (from VFS layer) which could be already stale. The problem we are seeing is that the acl changes on one node doesn't get refreshed on other nodes in the following case: Node 1 Node 2 -------------- ---------------- getfacl dir1 getfacl dir1 <-- this is OK setfacl -m u:user1:rwX dir1 getfacl dir1 <-- see the change for user1 getfacl dir1 <-- can't see change for user1 Link: https://lkml.kernel.org/r/20210903012631.6099-1-wen.gang.wang@oracle.comSigned-off-by: Wengang Wang <wen.gang.wang@oracle.com> Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Liu Yuntao authored
In the case of SHMEM_HUGE_WITHIN_SIZE, the page index is not rounded up correctly. When the page index points to the first page in a huge page, round_up() cannot bring it to the end of the huge page, but to the end of the previous one. An example: HPAGE_PMD_NR on my machine is 512(2 MB huge page size). After allcoating a 3000 KB buffer, I access it at location 2050 KB. In shmem_is_huge(), the corresponding index happens to be 512. After rounded up by HPAGE_PMD_NR, it will still be 512 which is smaller than i_size, and shmem_is_huge() will return true. As a result, my buffer takes an additional huge page, and that shouldn't happen when shmem_enabled is set to within_size. Link: https://lkml.kernel.org/r/20210909032007.18353-1-liuyuntao10@huawei.com Fixes: f3f0e1d2 ("khugepaged: add support of collapse for tmpfs/shmem pages") Signed-off-by: Liu Yuntao <liuyuntao10@huawei.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: wuxu.wu <wuxu.wu@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Guenter Roeck authored
xtensa frame size is larger than the frame size for almost all other architectures. This results in more than 50 "the frame size of <n> is larger than 1024 bytes" errors when trying to build xtensa:allmodconfig. Increase frame size for xtensa to 1536 bytes to avoid compile errors due to frame size limits. Link: https://lkml.kernel.org/r/20210912025235.3514761-1-linux@roeck-us.netSigned-off-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Max Filippov <jcmvbkbc@gmail.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Laight <David.Laight@ACULAB.COM> Cc: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Adam Borowski authored
gcc knows the true length too, and rightfully complains. Link: https://lkml.kernel.org/r/20210912204447.10427-1-kilobyte@angband.plSigned-off-by: Adam Borowski <kilobyte@angband.pl> Cc: SeongJae Park <sj38.park@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Marco Elver authored
In the main KASAN config option CC_HAS_WORKING_NOSANITIZE_ADDRESS is checked for instrumentation-based modes. However, if HAVE_ARCH_KASAN_HW_TAGS is true all modes may still be selected. To fix, also make the software modes depend on CC_HAS_WORKING_NOSANITIZE_ADDRESS. Link: https://lkml.kernel.org/r/20210910084240.1215803-1-elver@google.com Fixes: 6a63a63f ("kasan: introduce CONFIG_KASAN_HW_TAGS") Signed-off-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Aleksandr Nogikh <nogikh@google.com> Cc: Taras Madan <tarasmadan@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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