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2021-09-10spi: dt-bindings: xilinx: Drop type reference on *-bits propertiesRob Herring1-2/+0
Properties with standard unit suffixes such as '-bits' don't need a type. Cc: Mark Brown <broonie@kernel.org> Cc: Michal Simek <michal.simek@xilinx.com> Cc: linux-spi@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210910165945.2852999-1-robh@kernel.org
2021-09-10dt-bindings: More use 'enum' instead of 'oneOf' plus 'const' entriesRob Herring3-14/+14
'enum' is equivalent to 'oneOf' with a list of 'const' entries, but 'enum' is more concise and yields better error messages. Fix a couple more cases which have appeared. Cc: Rob Clark <robdclark@gmail.com> Cc: Sean Paul <sean@poorly.run> Cc: Mark Brown <broonie@kernel.org> Cc: Wim Van Sebroeck <wim@linux-watchdog.org> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Jonathan Marek <jonathan@marek.ca> Cc: Aswath Govindraju <a-govindraju@ti.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: dri-devel@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org Cc: linux-spi@vger.kernel.org Cc: linux-watchdog@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210910165153.2843871-1-robh@kernel.org
2021-09-10of: property: Disable fw_devlink DT support for X86Saravana Kannan1-0/+3
Andre reported fw_devlink=on breaking OLPC XO-1.5 [1]. OLPC XO-1.5 is an X86 system that uses a mix of ACPI and OF to populate devices. The root cause seems to be ISA devices not setting their fwnode field. But trying to figure out how to fix that doesn't seem worth the trouble because the OLPC devicetree is very sparse/limited and fw_devlink only adds the links causing this issue. Considering that there aren't many users of OF in an X86 system, simply fw_devlink DT support for X86. [1] - https://lore.kernel.org/lkml/3c1f2473-92ad-bfc4-258e-a5a08ad73dd0@web.de/ Fixes: ea718c699055 ("Revert "Revert "driver core: Set fw_devlink=on by default""") Signed-off-by: Saravana Kannan <saravanak@google.com> Cc: Andre Muller <andre.muller@web.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Tested-by: Andre Müller <andre.muller@web.de> Link: https://lore.kernel.org/r/20210910011446.3208894-1-saravanak@google.com Signed-off-by: Rob Herring <robh@kernel.org>
2021-09-09Merge tag '5.15-rc-ksmbd-part2' of git://git.samba.org/ksmbdLinus Torvalds12-223/+413
Pull ksmbd fixes from Steve French: - various fixes pointed out by coverity, and a minor cleanup patch - id mapping and ownership fixes - an smbdirect fix * tag '5.15-rc-ksmbd-part2' of git://git.samba.org/ksmbd: ksmbd: fix control flow issues in sid_to_id() ksmbd: fix read of uninitialized variable ret in set_file_basic_info ksmbd: add missing assignments to ret on ndr_read_int64 read calls ksmbd: add validation for ndr read/write functions ksmbd: remove unused ksmbd_file_table_flush function ksmbd: smbd: fix dma mapping error in smb_direct_post_send_data ksmbd: Reduce error log 'speed is unknown' to debug ksmbd: defer notify_change() call ksmbd: remove setattr preparations in set_file_basic_info() ksmbd: ensure error is surfaced in set_file_basic_info() ndr: fix translation in ndr_encode_posix_acl() ksmbd: fix translation in sid_to_id() ksmbd: fix subauth 0 handling in sid_to_id() ksmbd: fix translation in acl entries ksmbd: fix translation in ksmbd_acls_fattr() ksmbd: fix translation in create_posix_rsp_buf() ksmbd: fix translation in smb2_populate_readdir_entry() ksmbd: fix lookup on idmapped mounts
2021-09-09Merge tag 'for-5.15-tag' of ↵Linus Torvalds6-47/+77
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fixes from David Sterba: - fix max_inline mount option limit on 64k page system - lockdep fixes: - update bdev time in a safer way - move bdev put outside of sb write section when removing device - fix possible deadlock when mounting seed/sprout filesystem - zoned mode: fix split extent accounting - minor include fixup * tag 'for-5.15-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: zoned: fix double counting of split ordered extent btrfs: fix lockdep warning while mounting sprout fs btrfs: delay blkdev_put until after the device remove btrfs: update the bdev time directly when closing btrfs: use correct header for div_u64 in misc.h btrfs: fix upper limit for max_inline for page size 64K
2021-09-09Merge tag 'sound-fix-5.15-rc1' of ↵Linus Torvalds13-82/+111
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "A collection of small fixes that have been gathered before rc1, including a few regression fixes for the problem in the previous pull request" * tag 'sound-fix-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: gus: Fix repeated probe for ISA interwave card ALSA: gus: Fix repeated probes of snd_gus_create() ALSA: vx222: fix null-ptr-deref ASoC: rockchip: i2s: Fix concurrency between tx/rx ASoC: mt8195: correct the dts parsing logic about DPTX and HDMITX ASoC: Intel: boards: Fix CONFIG_SND_SOC_SDW_MOCKUP select ASoC: dt-bindings: fsl_rpmsg: Add compatible string for i.MX8ULP ALSA: usb-audio: Add registration quirk for JBL Quantum 800 ASoC: rt5682: fix headset background noise when S3 state ASoC: dt-bindings: mt8195: remove dependent headers in the example ASoC: mediatek: SND_SOC_MT8195 should depend on ARCH_MEDIATEK ASoC: samsung: s3c24xx_simtec: fix spelling mistake "devicec" -> "device" ASoC: audio-graph: respawn Platform Support ASoC: mediatek: mt8195: add MTK_PMIC_WRAP dependency
2021-09-09Merge tag 'for-linus-5.15-rc1' of ↵Linus Torvalds10-42/+124
git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML updates from Richard Weinberger: - Support for VMAP_STACK - Support for splice_write in hostfs - Fixes for virt-pci - Fixes for virtio_uml - Various fixes * tag 'for-linus-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: fix stub location calculation um: virt-pci: fix uapi documentation um: enable VMAP_STACK um: virt-pci: don't do DMA from stack hostfs: support splice_write um: virtio_uml: fix memory leak on init failures um: virtio_uml: include linux/virtio-uml.h lib/logic_iomem: fix sparse warnings um: make PCI emulation driver init/exit static
2021-09-09Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds30-371/+399
Pull ARM development updates from Russell King: - Rename "mod_init" and "mod_exit" so that initcall debug output is actually useful (Randy Dunlap) - Update maintainers entries for linux-arm-kernel to indicate it is moderated for non-subscribers (Randy Dunlap) - Move install rules to arch/arm/Makefile (Masahiro Yamada) - Drop unnecessary ARCH_NR_GPIOS definition (Linus Walleij) - Don't warn about atags_to_fdt() stack size (David Heidelberg) - Speed up unaligned copy_{from,to}_kernel_nofault (Arnd Bergmann) - Get rid of set_fs() usage (Arnd Bergmann) - Remove checks for GCC prior to v4.6 (Geert Uytterhoeven) * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9118/1: div64: Remove always-true __div64_const32_is_OK() duplicate ARM: 9117/1: asm-generic: div64: Remove always-true __div64_const32_is_OK() ARM: 9116/1: unified: Remove check for gcc < 4 ARM: 9110/1: oabi-compat: fix oabi epoll sparse warning ARM: 9113/1: uaccess: remove set_fs() implementation ARM: 9112/1: uaccess: add __{get,put}_kernel_nofault ARM: 9111/1: oabi-compat: rework fcntl64() emulation ARM: 9114/1: oabi-compat: rework sys_semtimedop emulation ARM: 9108/1: oabi-compat: rework epoll_wait/epoll_pwait emulation ARM: 9107/1: syscall: always store thread_info->abi_syscall ARM: 9109/1: oabi-compat: add epoll_pwait handler ARM: 9106/1: traps: use get_kernel_nofault instead of set_fs() ARM: 9115/1: mm/maccess: fix unaligned copy_{from,to}_kernel_nofault ARM: 9105/1: atags_to_fdt: don't warn about stack size ARM: 9103/1: Drop ARCH_NR_GPIOS definition ARM: 9102/1: move theinstall rules to arch/arm/Makefile ARM: 9100/1: MAINTAINERS: mark all linux-arm-kernel@infradead list as moderated ARM: 9099/1: crypto: rename 'mod_init' & 'mod_exit' functions to be module-specific
2021-09-09Merge tag 'trace-v5.15-2' of ↵Linus Torvalds14-39/+122
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull more tracing updates from Steven Rostedt: - Add migrate-disable counter to tracing header - Fix error handling in event probes - Fix missed unlock in osnoise in error path - Fix merge issue with tools/bootconfig - Clean up bootconfig data when init memory is removed - Fix bootconfig to loop only on subkeys - Have kernel command lines override bootconfig options - Increase field counts for synthetic events - Have histograms dynamic allocate event elements to save space - Fixes in testing and documentation * tag 'trace-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing/boot: Fix to loop on only subkeys selftests/ftrace: Exclude "(fault)" in testing add/remove eprobe events tracing: Dynamically allocate the per-elt hist_elt_data array tracing: synth events: increase max fields count tools/bootconfig: Show whole test command for each test case bootconfig: Fix missing return check of xbc_node_compose_key function tools/bootconfig: Fix tracing_on option checking in ftrace2bconf.sh docs: bootconfig: Add how to use bootconfig for kernel parameters init/bootconfig: Reorder init parameter from bootconfig and cmdline init: bootconfig: Remove all bootconfig data when the init memory is removed tracing/osnoise: Fix missed cpus_read_unlock() in start_per_cpu_kthreads() tracing: Fix some alloc_event_probe() error handling bugs tracing: Add migrate-disabled counter to tracing output.
2021-09-09Merge tag 's390-5.15-2' of ↵Linus Torvalds38-562/+139
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull more s390 updates from Heiko Carstens: "Except for the xpram device driver removal it is all about fixes and cleanups. - Fix topology update on cpu hotplug, so notifiers see expected masks. This bug was uncovered with SCHED_CORE support. - Fix stack unwinding so that the correct number of entries are omitted like expected by common code. This fixes KCSAN selftests. - Add kmemleak annotation to stack_alloc to avoid false positive kmemleak warnings. - Avoid layering violation in common I/O code and don't unregister subchannel from child-drivers. - Remove xpram device driver for which no real use case exists since the kernel is 64 bit only. Also all hypervisors got required support removed in the meantime, which means the xpram device driver is dead code. - Fix -ENODEV handling of clp_get_state in our PCI code. - Enable KFENCE in debug defconfig. - Cleanup hugetlbfs s390 specific Kconfig dependency. - Quite a lot of trivial fixes to get rid of "W=1" warnings, and and other simple cleanups" * tag 's390-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: hugetlbfs: s390 is always 64bit s390/ftrace: remove incorrect __va usage s390/zcrypt: remove incorrect kernel doc indicators scsi: zfcp: fix kernel doc comments s390/sclp: add __nonstring annotation s390/hmcdrv_ftp: fix kernel doc comment s390: remove xpram device driver s390/pci: read clp_list_pci_req only once s390/pci: fix clp_get_state() handling of -ENODEV s390/cio: fix kernel doc comment s390/ctrlchar: fix kernel doc comment s390/con3270: use proper type for tasklet function s390/cpum_cf: move array from header to C file s390/mm: fix kernel doc comments s390/topology: fix topology information when calling cpu hotplug notifiers s390/unwind: use current_frame_address() to unwind current task s390/configs: enable CONFIG_KFENCE in debug_defconfig s390/entry: make oklabel within CHKSTG macro local s390: add kmemleak annotation in stack_alloc() s390/cio: dont unregister subchannel from child-drivers
2021-09-09Merge branch 'work.gfs2' of ↵Linus Torvalds3-21/+35
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull gfs2 setattr updates from Al Viro: "Make it possible for filesystems to use a generic 'may_setattr()' and switch gfs2 to using it" * 'work.gfs2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: gfs2: Switch to may_setattr in gfs2_setattr fs: Move notify_change permission checks into may_setattr
2021-09-09Merge branch 'work.init' of ↵Linus Torvalds3-36/+83
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull root filesystem type handling updates from Al Viro: "Teach init/do_mounts.c to handle non-block filesystems, hopefully preventing even more special-cased kludges (such as root=/dev/nfs, etc)" * 'work.init' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs: simplify get_filesystem_list / get_all_fs_names init: allow mounting arbitrary non-blockdevice filesystems as root init: split get_fs_names
2021-09-09Merge branch 'work.iov_iter' of ↵Linus Torvalds2-1/+7
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull iov_iter fixes from Al Viro: "Fixes for io-uring handling of iov_iter reexpands" * 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: io_uring: reexpand under-reexpanded iters iov_iter: track truncated size
2021-09-09Merge tag 'cxl-for-5.15' of ↵Linus Torvalds19-889/+1352
git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull CXL (Compute Express Link) updates from Dan Williams: - Fix detection of CXL host bridges to filter out disabled ACPI0016 devices in the ACPI DSDT. - Fix kernel lockdown integration to disable raw commands when raw PCI access is disabled. - Fix a broken debug message. - Add support for "Get Partition Info". I.e. enumerate the split between volatile and persistent capacity on bi-modal CXL memory expanders. - Re-factor the core by subject area. This is a work in progress. - Prepare libnvdimm to understand CXL labels in addition to EFI labels. This is a work in progress. * tag 'cxl-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (25 commits) cxl/registers: Fix Documentation warning cxl/pmem: Fix Documentation warning cxl/uapi: Fix defined but not used warnings cxl/pci: Fix debug message in cxl_probe_regs() cxl/pci: Fix lockdown level cxl/acpi: Do not add DSDT disabled ACPI0016 host bridge ports libnvdimm/labels: Add claim class helpers libnvdimm/labels: Add type-guid helpers libnvdimm/labels: Add blk special cases for nlabel and position helpers libnvdimm/labels: Add blk isetcookie set / validation helpers libnvdimm/labels: Add a checksum calculation helper libnvdimm/labels: Introduce label setter helpers libnvdimm/labels: Add isetcookie validation helper libnvdimm/labels: Introduce getters for namespace label fields cxl/mem: Adjust ram/pmem range to represent DPA ranges cxl/mem: Account for partitionable space in ram/pmem ranges cxl/pci: Store memory capacity values cxl/pci: Simplify register setup cxl/pci: Ignore unknown register block types cxl/core: Move memdev management to core ...
2021-09-09Merge tag 'libnvdimm-for-5.15' of ↵Linus Torvalds10-172/+120
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: - Fix a race condition in the teardown path of raw mode pmem namespaces. - Cleanup the code that filesystems use to detect filesystem-dax capabilities of their underlying block device. * tag 'libnvdimm-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: dax: remove bdev_dax_supported xfs: factor out a xfs_buftarg_is_dax helper dax: stub out dax_supported for !CONFIG_FS_DAX dax: remove __generic_fsdax_supported dax: move the dax_read_lock() locking into dax_supported dax: mark dax_get_by_host static dm: use fs_dax_get_by_bdev instead of dax_get_by_host dax: stop using bdevname fsdax: improve the FS_DAX Kconfig description and help text libnvdimm/pmem: Fix crash triggered when I/O in-flight during unbind
2021-09-09Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds4-6/+8
Pull rdma fixes from Jason Gunthorpe: "I don't usually send a second PR in the merge window, but the fix to mlx5 is significant enough that it should start going through the process ASAP. Along with it comes some of the usual -rc stuff that would normally wait for a -rc2 or so. Summary: Important error case regression fixes in mlx5: - Wrong size used when computing the error path smaller allocation request leads to corruption - Confusing but ultimately harmless alignment mis-calculation Static checker warning fixes: - NULL pointer subtraction in qib - kcalloc in bnxt_re - Missing static on global variable in hfi1" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: IB/hfi1: make hist static RDMA/bnxt_re: Prefer kcalloc over open coded arithmetic IB/qib: Fix null pointer subtraction compiler warning RDMA/mlx5: Fix xlt_chunk_align calculation RDMA/mlx5: Fix number of allocated XLT entries
2021-09-09Merge tag 'dmaengine-5.15-rc1' of ↵Linus Torvalds54-928/+4080
git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine Pull dmaengine updates from Vinod Koul: "New drivers/devices - Support for Renesas RZ/G2L dma controller - New driver for AMD PTDMA controller Updates: - Big pile of idxd updates - Updates for Altera driver, stm32-dma, dw etc" * tag 'dmaengine-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (83 commits) dmaengine: sh: fix some NULL dereferences dmaengine: sh: Fix unused initialization of pointer lmdesc MAINTAINERS: Fix AMD PTDMA DRIVER entry dmaengine: ptdma: remove PT_OFFSET to avoid redefnition dmaengine: ptdma: Add debugfs entries for PTDMA dmaengine: ptdma: register PTDMA controller as a DMA resource dmaengine: ptdma: Initial driver for the AMD PTDMA dmaengine: fsl-dpaa2-qdma: Fix spelling mistake "faile" -> "failed" dmaengine: idxd: remove interrupt disable for dev_lock dmaengine: idxd: remove interrupt disable for cmd_lock dmaengine: idxd: fix setting up priv mode for dwq dmaengine: xilinx_dma: Set DMA mask for coherent APIs dmaengine: ti: k3-psil-j721e: Add entry for CSI2RX dmaengine: sh: Add DMAC driver for RZ/G2L SoC dmaengine: Extend the dma_slave_width for 128 bytes dt-bindings: dma: Document RZ/G2L bindings dmaengine: ioat: depends on !UML dmaengine: idxd: set descriptor allocation size to threshold for swq dmaengine: idxd: make submit failure path consistent on desc freeing dmaengine: idxd: remove interrupt flag for completion list spinlock ...
2021-09-08Merge branches 'akpm' and 'akpm-hotfixes' (patches from Andrew)Linus Torvalds47-663/+267
Merge yet more updates and hotfixes from Andrew Morton: "Post-linux-next material, based upon latest upstream to catch the now-merged dependencies: - 10 patches. Subsystems affected by this patch series: mm (vmstat and migration) and compat. And bunch of hotfixes, mostly cc:stable: - 8 patches. Subsystems affected by this patch series: mm (hmm, hugetlb, vmscan, pagealloc, pagemap, kmemleak, mempolicy, and memblock)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: arch: remove compat_alloc_user_space compat: remove some compat entry points mm: simplify compat numa syscalls mm: simplify compat_sys_move_pages kexec: avoid compat_alloc_user_space kexec: move locking into do_kexec_load mm: migrate: change to use bool type for 'page_was_mapped' mm: migrate: fix the incorrect function name in comments mm: migrate: introduce a local variable to get the number of pages mm/vmstat: protect per cpu variables with preempt disable on RT * emailed hotfixes from Andrew Morton <akpm@linux-foundation.org>: nds32/setup: remove unused memblock_region variable in setup_memory() mm/mempolicy: fix a race between offset_il_node and mpol_rebind_task mm/kmemleak: allow __GFP_NOLOCKDEP passed to kmemleak's gfp mmap_lock: change trace and locking order mm/page_alloc.c: avoid accessing uninitialized pcp page migratetype mm,vmscan: fix divide by zero in get_scan_count mm/hugetlb: initialize hugetlb_usage in mm_init mm/hmm: bypass devmap pte when all pfn requested flags are fulfilled
2021-09-08nds32/setup: remove unused memblock_region variable in setup_memory()Mike Rapoport1-1/+0
kernel test robot reports unused variable warning: arch/nds32/kernel/setup.c:247:26: warning: Unused variable: region [unusedVariable] struct memblock_region *region; ^ Remove the unused variable. Link: https://lkml.kernel.org/r/20210712125218.28951-1-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net> Cc: Greentime Hu <green.hu@gmail.com> Cc: Nick Hu <nickhu@andestech.com> Cc: Vincent Chen <deanbo422@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm/mempolicy: fix a race between offset_il_node and mpol_rebind_taskyanghui1-4/+13
Servers happened below panic: Kernel version:5.4.56 BUG: unable to handle page fault for address: 0000000000002c48 RIP: 0010:__next_zones_zonelist+0x1d/0x40 Call Trace: __alloc_pages_nodemask+0x277/0x310 alloc_page_interleave+0x13/0x70 handle_mm_fault+0xf99/0x1390 __do_page_fault+0x288/0x500 do_page_fault+0x30/0x110 page_fault+0x3e/0x50 The reason for the panic is that MAX_NUMNODES is passed in the third parameter in __alloc_pages_nodemask(preferred_nid). So access to zonelist->zoneref->zone_idx in __next_zones_zonelist will cause a panic. In offset_il_node(), first_node() returns nid from pol->v.nodes, after this other threads may chang pol->v.nodes before next_node(). This race condition will let next_node return MAX_NUMNODES. So put pol->nodes in a local variable. The race condition is between offset_il_node and cpuset_change_task_nodemask: CPU0: CPU1: alloc_pages_vma() interleave_nid(pol,) offset_il_node(pol,) first_node(pol->v.nodes) cpuset_change_task_nodemask //nodes==0xc mpol_rebind_task mpol_rebind_policy mpol_rebind_nodemask(pol,nodes) //nodes==0x3 next_node(nid, pol->v.nodes)//return MAX_NUMNODES Link: https://lkml.kernel.org/r/20210906034658.48721-1-yanghui.def@bytedance.com Signed-off-by: yanghui <yanghui.def@bytedance.com> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm/kmemleak: allow __GFP_NOLOCKDEP passed to kmemleak's gfpNaohiro Aota1-1/+2
In a memory pressure situation, I'm seeing the lockdep WARNING below. Actually, this is similar to a known false positive which is already addressed by commit 6dcde60efd94 ("xfs: more lockdep whackamole with kmem_alloc*"). This warning still persists because it's not from kmalloc() itself but from an allocation for kmemleak object. While kmalloc() itself suppress the warning with __GFP_NOLOCKDEP, gfp_kmemleak_mask() is dropping the flag for the kmemleak's allocation. Allow __GFP_NOLOCKDEP to be passed to kmemleak's allocation, so that the warning for it is also suppressed. ====================================================== WARNING: possible circular locking dependency detected 5.14.0-rc7-BTRFS-ZNS+ #37 Not tainted ------------------------------------------------------ kswapd0/288 is trying to acquire lock: ffff88825ab45df0 (&xfs_nondir_ilock_class){++++}-{3:3}, at: xfs_ilock+0x8a/0x250 but task is already holding lock: ffffffff848cc1e0 (fs_reclaim){+.+.}-{0:0}, at: __fs_reclaim_acquire+0x5/0x30 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (fs_reclaim){+.+.}-{0:0}: fs_reclaim_acquire+0x112/0x160 kmem_cache_alloc+0x48/0x400 create_object.isra.0+0x42/0xb10 kmemleak_alloc+0x48/0x80 __kmalloc+0x228/0x440 kmem_alloc+0xd3/0x2b0 kmem_alloc_large+0x5a/0x1c0 xfs_attr_copy_value+0x112/0x190 xfs_attr_shortform_getvalue+0x1fc/0x300 xfs_attr_get_ilocked+0x125/0x170 xfs_attr_get+0x329/0x450 xfs_get_acl+0x18d/0x430 get_acl.part.0+0xb6/0x1e0 posix_acl_xattr_get+0x13a/0x230 vfs_getxattr+0x21d/0x270 getxattr+0x126/0x310 __x64_sys_fgetxattr+0x1a6/0x2a0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae -> #0 (&xfs_nondir_ilock_class){++++}-{3:3}: __lock_acquire+0x2c0f/0x5a00 lock_acquire+0x1a1/0x4b0 down_read_nested+0x50/0x90 xfs_ilock+0x8a/0x250 xfs_can_free_eofblocks+0x34f/0x570 xfs_inactive+0x411/0x520 xfs_fs_destroy_inode+0x2c8/0x710 destroy_inode+0xc5/0x1a0 evict+0x444/0x620 dispose_list+0xfe/0x1c0 prune_icache_sb+0xdc/0x160 super_cache_scan+0x31e/0x510 do_shrink_slab+0x337/0x8e0 shrink_slab+0x362/0x5c0 shrink_node+0x7a7/0x1a40 balance_pgdat+0x64e/0xfe0 kswapd+0x590/0xa80 kthread+0x38c/0x460 ret_from_fork+0x22/0x30 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(fs_reclaim); lock(&xfs_nondir_ilock_class); lock(fs_reclaim); lock(&xfs_nondir_ilock_class); *** DEADLOCK *** 3 locks held by kswapd0/288: #0: ffffffff848cc1e0 (fs_reclaim){+.+.}-{0:0}, at: __fs_reclaim_acquire+0x5/0x30 #1: ffffffff848a08d8 (shrinker_rwsem){++++}-{3:3}, at: shrink_slab+0x269/0x5c0 #2: ffff8881a7a820e8 (&type->s_umount_key#60){++++}-{3:3}, at: super_cache_scan+0x5a/0x510 Link: https://lkml.kernel.org/r/20210907055659.3182992-1-naohiro.aota@wdc.com Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: "Darrick J . Wong" <djwong@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mmap_lock: change trace and locking orderLiam Howlett1-4/+4
Print to the trace log before releasing the lock to avoid racing with other trace log printers of the same lock type. Link: https://lkml.kernel.org/r/20210903022041.1843024-1-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michel Lespinasse <walken.cr@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm/page_alloc.c: avoid accessing uninitialized pcp page migratetypeMiaohe Lin1-1/+3
If it's not prepared to free unref page, the pcp page migratetype is unset. Thus we will get rubbish from get_pcppage_migratetype() and might list_del(&page->lru) again after it's already deleted from the list leading to grumble about data corruption. Link: https://lkml.kernel.org/r/20210902115447.57050-1-linmiaohe@huawei.com Fixes: df1acc856923 ("mm/page_alloc: avoid conflating IRQs disabled with zone->lock") Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm,vmscan: fix divide by zero in get_scan_countRik van Riel1-1/+1
Commit f56ce412a59d ("mm: memcontrol: fix occasional OOMs due to proportional memory.low reclaim") introduced a divide by zero corner case when oomd is being used in combination with cgroup memory.low protection. When oomd decides to kill a cgroup, it will force the cgroup memory to be reclaimed after killing the tasks, by writing to the memory.max file for that cgroup, forcing the remaining page cache and reclaimable slab to be reclaimed down to zero. Previously, on cgroups with some memory.low protection that would result in the memory being reclaimed down to the memory.low limit, or likely not at all, having the page cache reclaimed asynchronously later. With f56ce412a59d the oomd write to memory.max tries to reclaim all the way down to zero, which may race with another reclaimer, to the point of ending up with the divide by zero below. This patch implements the obvious fix. Link: https://lkml.kernel.org/r/20210826220149.058089c6@imladris.surriel.com Fixes: f56ce412a59d ("mm: memcontrol: fix occasional OOMs due to proportional memory.low reclaim") Signed-off-by: Rik van Riel <riel@surriel.com> Acked-by: Roman Gushchin <guro@fb.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Chris Down <chris@chrisdown.name> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm/hugetlb: initialize hugetlb_usage in mm_initLiu Zixian2-0/+10
After fork, the child process will get incorrect (2x) hugetlb_usage. If a process uses 5 2MB hugetlb pages in an anonymous mapping, HugetlbPages: 10240 kB and then forks, the child will show, HugetlbPages: 20480 kB The reason for double the amount is because hugetlb_usage will be copied from the parent and then increased when we copy page tables from parent to child. Child will have 2x actual usage. Fix this by adding hugetlb_count_init in mm_init. Link: https://lkml.kernel.org/r/20210826071742.877-1-liuzixian4@huawei.com Fixes: 5d317b2b6536 ("mm: hugetlb: proc: add HugetlbPages field to /proc/PID/status") Signed-off-by: Liu Zixian <liuzixian4@huawei.com> Reviewed-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm/hmm: bypass devmap pte when all pfn requested flags are fulfilledLi Zhijian1-1/+4
Previously, we noticed the one rpma example was failed[1] since commit 36f30e486dce ("IB/core: Improve ODP to use hmm_range_fault()"), where it will use ODP feature to do RDMA WRITE between fsdax files. After digging into the code, we found hmm_vma_handle_pte() will still return EFAULT even though all the its requesting flags has been fulfilled. That's because a DAX page will be marked as (_PAGE_SPECIAL | PAGE_DEVMAP) by pte_mkdevmap(). Link: https://github.com/pmem/rpma/issues/1142 [1] Link: https://lkml.kernel.org/r/20210830094232.203029-1-lizhijian@cn.fujitsu.com Fixes: 405506274922 ("mm/hmm: add missing call to hmm_pte_need_fault in HMM_PFN_SPECIAL handling") Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08Merge tag 'tag-chrome-platform-for-v5.15' of ↵Linus Torvalds5-23/+123
git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux Pull chrome platform updates from Benson Leung: "cros_ec_typec: - make the cros_ec_typec driver to use the pre-existing cros_ec_check_features() function sensorhub: - add trace events for sample misc: - cros_ec_proto - re-send commands in the event of a timeout (for the FPMCU) - fix warnings in cros_ec_trace related to format output" * tag 'tag-chrome-platform-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: platform/chrome: cros_ec_trace: Fix format warnings platform/chrome: cros_ec_typec: Use existing feature check platform/chrome: cros_ec_proto: Send command again when timeout occurs platform/chrome: sensorhub: Add trace events for sample
2021-09-08Merge tag 'pm-5.15-rc1-2' of ↵Linus Torvalds39-767/+1441
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management updates from Rafael Wysocki: "These are mostly ARM cpufreq driver updates, including one new MediaTek driver that has just passed all of the reviews, with the addition of a revert of a recent intel_pstate commit, some core cpufreq changes and a DT-related update of the operating performance points (OPP) support code. Specifics: - Add new cpufreq driver for the MediaTek MT6779 platform called mediatek-hw along with corresponding DT bindings (Hector.Yuan). - Add DCVS interrupt support to the qcom-cpufreq-hw driver (Thara Gopinath). - Make the qcom-cpufreq-hw driver set the dvfs_possible_from_any_cpu policy flag (Taniya Das). - Blocklist more Qualcomm platforms in cpufreq-dt-platdev (Bjorn Andersson). - Make the vexpress cpufreq driver set the CPUFREQ_IS_COOLING_DEV flag (Viresh Kumar). - Add new cpufreq driver callback to allow drivers to register with the Energy Model in a consistent way and make several drivers use it (Viresh Kumar). - Change the remaining users of the .ready() cpufreq driver callback to move the code from it elsewhere and drop it from the cpufreq core (Viresh Kumar). - Revert recent intel_pstate change adding HWP guaranteed performance change notification support to it that led to problems, because the notification in question is triggered prematurely on some systems (Rafael Wysocki). - Convert the OPP DT bindings to DT schema and clean them up while at it (Rob Herring)" * tag 'pm-5.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (23 commits) Revert "cpufreq: intel_pstate: Process HWP Guaranteed change notification" cpufreq: mediatek-hw: Add support for CPUFREQ HW cpufreq: Add of_perf_domain_get_sharing_cpumask dt-bindings: cpufreq: add bindings for MediaTek cpufreq HW cpufreq: Remove ready() callback cpufreq: sh: Remove sh_cpufreq_cpu_ready() cpufreq: acpi: Remove acpi_cpufreq_cpu_ready() cpufreq: qcom-hw: Set dvfs_possible_from_any_cpu cpufreq driver flag cpufreq: blocklist more Qualcomm platforms in cpufreq-dt-platdev cpufreq: qcom-cpufreq-hw: Add dcvs interrupt support cpufreq: scmi: Use .register_em() to register with energy model cpufreq: vexpress: Use .register_em() to register with energy model cpufreq: scpi: Use .register_em() to register with energy model dt-bindings: opp: Convert to DT schema dt-bindings: Clean-up OPP binding node names in examples ARM: dts: omap: Drop references to opp.txt cpufreq: qcom-cpufreq-hw: Use .register_em() to register with energy model cpufreq: omap: Use .register_em() to register with energy model cpufreq: mediatek: Use .register_em() to register with energy model cpufreq: imx6q: Use .register_em() to register with energy model ...
2021-09-08Merge tag 'acpi-5.15-rc1-2' of ↵Linus Torvalds6-52/+197
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more ACPI updates from Rafael Wysocki: "These add ACPI support to the PCI VMD driver, improve suspend-to-idle support for AMD platforms and update documentation. Specifics: - Add ACPI support to the PCI VMD driver (Rafael Wysocki) - Rearrange suspend-to-idle support code to reflect the platform firmware expectations on some AMD platforms (Mario Limonciello) - Make SSDT overlays documentation follow the code documented by it more closely (Andy Shevchenko)" * tag 'acpi-5.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: PM: s2idle: Run both AMD and Microsoft methods if both are supported Documentation: ACPI: Align the SSDT overlays file with the code PCI: VMD: ACPI: Make ACPI companion lookup work for VMD bus
2021-09-08Merge tag 'docs-5.15-2' of git://git.lwn.net/linuxLinus Torvalds73-129/+2686
Pull more documentation updates from Jonathan Corbet: "Another collection of documentation patches, mostly fixes but also includes another set of traditional Chinese translations" * tag 'docs-5.15-2' of git://git.lwn.net/linux: docs: pdfdocs: Fix typo in CJK-language specific font settings docs: kernel-hacking: Remove inappropriate text docs/zh_TW: add translations for zh_TW/filesystems docs/zh_TW: add translations for zh_TW/cpu-freq docs/zh_TW: add translations for zh_TW/arm64 docs/zh_CN: Modify the translator tag and fix the wrong word Documentation/features/vm: correct huge-vmap APIs Documentation: block: blk-mq: Fix small typo in multi-queue docs Documentation: in_irq() cleanup Documentation: arm: marvell: Add 88F6825 model into list Documentation/process/maintainer-pgp-guide: Replace broken link to PGP path finder Documentation: locking: fix references Documentation: Update details of The Linux Kernel Module Programming Guide docs: x86: Remove obsolete information about x86_64 vmalloc() faulting Documentation/process/applying-patches: Activate linux-next man hyperlink
2021-09-08Merge tag 'modules-for-v5.15' of ↵Linus Torvalds2-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull module updates from Jessica Yu: "The only main change I have for this round of updates is the modules MAINTAINERS update. As I find myself with less time to devote to upstream these days, Luis has kindly agreed to help maintain the module loader, to eventually transition to being the primary maintainer. Since Luis is already very involved upstream with experience maintaining various areas of the kernel including the kmod usermode helper, I think he is a great fit for this area of the kernel. Summary: - Add Luis Chamberlain as modules maintainer - Fix for .ctors sections in module linker script" * tag 'modules-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: MAINTAINERS: Add Luis Chamberlain as modules maintainer module: combine constructors in module linker script
2021-09-08Merge tag 'microblaze-v5.15' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds2-5/+4
Pull microblaze update from Michal Simek: - Kbuild clean up * tag 'microblaze-v5.15' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: move core-y in arch/microblaze/Makefile to arch/microblaze/Kbuild
2021-09-08Merge branch 'for-5.15/fsdax-cleanups' into for-5.15/libnvdimmDan Williams8-169/+117
Include Christoph's rework of the dax_supported() helpers in the v5.15 libnvdimm update. This supports the ongoing dax-reflink enabling effort.
2021-09-08Merge tag 'nfsd-5.15-1' of ↵Linus Torvalds3-7/+10
git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux Pull nfsd fixes from Chuck Lever: - Restore performance on memory-starved servers * tag 'nfsd-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: SUNRPC: improve error response to over-size gss credential SUNRPC: don't pause on incomplete allocation
2021-09-08Merge tag 'ceph-for-5.15-rc1' of git://github.com/ceph/ceph-clientLinus Torvalds14-207/+438
Pull ceph updates from Ilya Dryomov: - a set of patches to address fsync stalls caused by depending on periodic rather than triggered MDS journal flushes in some cases (Xiubo Li) - a fix for mtime effectively not getting updated in case of competing writers (Jeff Layton) - a couple of fixes for inode reference leaks and various WARNs after "umount -f" (Xiubo Li) - a new ceph.auth_mds extended attribute (Jeff Layton) - a smattering of fixups and cleanups from Jeff, Xiubo and Colin. * tag 'ceph-for-5.15-rc1' of git://github.com/ceph/ceph-client: ceph: fix dereference of null pointer cf ceph: drop the mdsc_get_session/put_session dout messages ceph: lockdep annotations for try_nonblocking_invalidate ceph: don't WARN if we're forcibly removing the session caps ceph: don't WARN if we're force umounting ceph: remove the capsnaps when removing caps ceph: request Fw caps before updating the mtime in ceph_write_iter ceph: reconnect to the export targets on new mdsmaps ceph: print more information when we can't find snaprealm ceph: add ceph_change_snap_realm() helper ceph: remove redundant initializations from mdsc and session ceph: cancel delayed work instead of flushing on mdsc teardown ceph: add a new vxattr to return auth mds for an inode ceph: remove some defunct forward declarations ceph: flush the mdlog before waiting on unsafe reqs ceph: flush mdlog before umounting ceph: make iterate_sessions a global symbol ceph: make ceph_create_session_msg a global symbol ceph: fix comment about short copies in ceph_write_end ceph: fix memory leak on decode error in ceph_handle_caps
2021-09-08Merge tag '9p-for-5.15-rc1' of git://github.com/martinetd/linuxLinus Torvalds4-6/+10
Pull 9p updates from Dominique Martinet: "A couple of harmless fixes, increase max tcp msize (64KB -> 1MB), and increase default msize (8KB -> 128KB) The default increase has been discussed with Christian for the qemu side of things but makes sense for all supported transports" * tag '9p-for-5.15-rc1' of git://github.com/martinetd/linux: net/9p: increase default msize to 128k net/9p: use macro to define default msize net/9p: increase tcp max msize to 1MB 9p/xen: Fix end of loop tests for list_for_each_entry 9p/trans_virtio: Remove sysfs file on probe failure
2021-09-08arch: remove compat_alloc_user_spaceArnd Bergmann24-333/+12
All users of compat_alloc_user_space() and copy_in_user() have been removed from the kernel, only a few functions in sparc remain that can be changed to calling arch_copy_in_user() instead. Link: https://lkml.kernel.org/r/20210727144859.4150043-7-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Feng Tang <feng.tang@intel.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08compat: remove some compat entry pointsArnd Bergmann14-117/+42
These are all handled correctly when calling the native system call entry point, so remove the special cases. Link: https://lkml.kernel.org/r/20210727144859.4150043-6-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Feng Tang <feng.tang@intel.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm: simplify compat numa syscallsArnd Bergmann2-129/+64
The compat implementations for mbind, get_mempolicy, set_mempolicy and migrate_pages are just there to handle the subtly different layout of bitmaps on 32-bit hosts. The compat implementation however lacks some of the checks that are present in the native one, in particular for checking that the extra bits are all zero when user space has a larger mask size than the kernel. Worse, those extra bits do not get cleared when copying in or out of the kernel, which can lead to incorrect data as well. Unify the implementation to handle the compat bitmap layout directly in the get_nodes() and copy_nodes_to_user() helpers. Splitting out the get_bitmap() helper from get_nodes() also helps readability of the native case. On x86, two additional problems are addressed by this: compat tasks can pass a bitmap at the end of a mapping, causing a fault when reading across the page boundary for a 64-bit word. x32 tasks might also run into problems with get_mempolicy corrupting data when an odd number of 32-bit words gets passed. On parisc the migrate_pages() system call apparently had the wrong calling convention, as big-endian architectures expect the words inside of a bitmap to be swapped. This is not a problem though since parisc has no NUMA support. [arnd@arndb.de: fix mempolicy crash] Link: https://lkml.kernel.org/r/20210730143417.3700653-1-arnd@kernel.org Link: https://lore.kernel.org/lkml/YQPLG20V3dmOfq3a@osiris/ Link: https://lkml.kernel.org/r/20210727144859.4150043-5-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Feng Tang <feng.tang@intel.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm: simplify compat_sys_move_pagesArnd Bergmann1-15/+30
The compat move_pages() implementation uses compat_alloc_user_space() for converting the pointer array. Moving the compat handling into the function itself is a bit simpler and lets us avoid the compat_alloc_user_space() call. Link: https://lkml.kernel.org/r/20210727144859.4150043-4-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Feng Tang <feng.tang@intel.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08kexec: avoid compat_alloc_user_spaceArnd Bergmann1-36/+25
kimage_alloc_init() expects a __user pointer, so compat_sys_kexec_load() uses compat_alloc_user_space() to convert the layout and put it back onto the user space caller stack. Moving the user space access into the syscall handler directly actually makes the code simpler, as the conversion for compat mode can now be done on kernel memory. Link: https://lkml.kernel.org/r/20210727144859.4150043-3-arnd@kernel.org Link: https://lore.kernel.org/lkml/YPbtsU4GX6PL7%2F42@infradead.org/ Link: https://lore.kernel.org/lkml/m1y2cbzmnw.fsf@fess.ebiederm.org/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> Co-developed-by: Eric Biederman <ebiederm@xmission.com> Co-developed-by: Christoph Hellwig <hch@infradead.org> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Feng Tang <feng.tang@intel.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08kexec: move locking into do_kexec_loadArnd Bergmann1-28/+16
Patch series "compat: remove compat_alloc_user_space", v5. Going through compat_alloc_user_space() to convert indirect system call arguments tends to add complexity compared to handling the native and compat logic in the same code. This patch (of 6): The locking is the same between the native and compat version of sys_kexec_load(), so it can be done in the common implementation to reduce duplication. Link: https://lkml.kernel.org/r/20210727144859.4150043-1-arnd@kernel.org Link: https://lkml.kernel.org/r/20210727144859.4150043-2-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Co-developed-by: Eric Biederman <ebiederm@xmission.com> Co-developed-by: Christoph Hellwig <hch@infradead.org> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Helge Deller <deller@gmx.de> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Feng Tang <feng.tang@intel.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm: migrate: change to use bool type for 'page_was_mapped'Baolin Wang1-2/+2
Change to use bool type for 'page_was_mapped' variable making it more readable. Link: https://lkml.kernel.org/r/ce1279df18d2c163998c403e0b5ec6d3f6f90f7a.1629447552.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Yang Shi <shy828301@gmail.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm: migrate: fix the incorrect function name in commentsBaolin Wang1-1/+1
since commit a98a2f0c8ce1 ("mm/rmap: split migration into its own function"), the migration ptes establishment has been split into a separate try_to_migrate() function, thus update the related comments. Link: https://lkml.kernel.org/r/5b824bad6183259c916ae6cf42f81d14c6118b06.1629447552.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Yang Shi <shy828301@gmail.com> Reviewed-by: Alistair Popple <apopple@nvidia.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm: migrate: introduce a local variable to get the number of pagesBaolin Wang1-2/+3
Use thp_nr_pages() instead of compound_nr() to get the number of pages for THP page, meanwhile introducing a local variable 'nr_pages' to avoid getting the number of pages repeatedly. Link: https://lkml.kernel.org/r/a8e331ac04392ee230c79186330fb05e86a2aa77.1629447552.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Yang Shi <shy828301@gmail.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08mm/vmstat: protect per cpu variables with preempt disable on RTIngo Molnar1-0/+48
Disable preemption on -RT for the vmstat code. On vanila the code runs in IRQ-off regions while on -RT it may not when stats are updated under a local_lock. "preempt_disable" ensures that the same resources is not updated in parallel due to preemption. This patch differs from the preempt-rt version where __count_vm_event and __count_vm_events are also protected. The counters are explicitly "allowed to be to be racy" so there is no need to protect them from preemption. Only the accurate page stats that are updated by a read-modify-write need protection. This patch also differs in that a preempt_[en|dis]able_rt helper is not used. As vmstat is the only user of the helper, it was suggested that it be open-coded in vmstat.c instead of risking the helper being used in unnecessary contexts. Link: https://lkml.kernel.org/r/20210805160019.1137-2-mgorman@techsingularity.net Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-08ksmbd: fix control flow issues in sid_to_id()Namjae Jeon1-26/+22
Addresses-Coverity reported Control flow issues in sid_to_id() /fs/ksmbd/smbacl.c: 277 in sid_to_id() 271 272 if (sidtype == SIDOWNER) { 273 kuid_t uid; 274 uid_t id; 275 276 id = le32_to_cpu(psid->sub_auth[psid->num_subauth - 1]); >>> CID 1506810: Control flow issues (NO_EFFECT) >>> This greater-than-or-equal-to-zero comparison of an unsigned value >>> is always true. "id >= 0U". 277 if (id >= 0) { 278 /* 279 * Translate raw sid into kuid in the server's user 280 * namespace. 281 */ 282 uid = make_kuid(&init_user_ns, id); Addresses-Coverity: ("Control flow issues") Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-09-08ksmbd: fix read of uninitialized variable ret in set_file_basic_infoNamjae Jeon1-1/+1
Addresses-Coverity reported Uninitialized variables warninig : /fs/ksmbd/smb2pdu.c: 5525 in set_file_basic_info() 5519 if (!rc) { 5520 inode->i_ctime = ctime; 5521 mark_inode_dirty(inode); 5522 } 5523 inode_unlock(inode); 5524 } >>> CID 1506805: Uninitialized variables (UNINIT) >>> Using uninitialized value "rc". 5525 return rc; 5526 } 5527 5528 static int set_file_allocation_info(struct ksmbd_work *work, 5529 struct ksmbd_file *fp, char *buf) 5530 { Addresses-Coverity: ("Uninitialized variable") Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-09-08ksmbd: add missing assignments to ret on ndr_read_int64 read callsColin Ian King1-2/+2
Currently there are two ndr_read_int64 calls where ret is being checked for failure but ret is not being assigned a return value from the call. Static analyis is reporting the checks on ret as dead code. Fix this. Addresses-Coverity: ("Logical dead code") Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-09-08Merge branch 'akpm' (patches from Andrew)Linus Torvalds149-930/+5341
Merge more updates from Andrew Morton: "147 patches, based on 7d2a07b769330c34b4deabeed939325c77a7ec2f. Subsystems affected by this patch series: mm (memory-hotplug, rmap, ioremap, highmem, cleanups, secretmem, kfence, damon, and vmscan), alpha, percpu, procfs, misc, core-kernel, MAINTAINERS, lib, checkpatch, epoll, init, nilfs2, coredump, fork, pids, criu, kconfig, selftests, ipc, and scripts" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (94 commits) scripts: check_extable: fix typo in user error message mm/workingset: correct kernel-doc notations ipc: replace costly bailout check in sysvipc_find_ipc() selftests/memfd: remove unused variable Kconfig.debug: drop selecting non-existing HARDLOCKUP_DETECTOR_ARCH configs: remove the obsolete CONFIG_INPUT_POLLDEV prctl: allow to setup brk for et_dyn executables pid: cleanup the stale comment mentioning pidmap_init(). kernel/fork.c: unexport get_{mm,task}_exe_file coredump: fix memleak in dump_vma_snapshot() fs/coredump.c: log if a core dump is aborted due to changed file permissions nilfs2: use refcount_dec_and_lock() to fix potential UAF nilfs2: fix memory leak in nilfs_sysfs_delete_snapshot_group nilfs2: fix memory leak in nilfs_sysfs_create_snapshot_group nilfs2: fix memory leak in nilfs_sysfs_delete_##name##_group nilfs2: fix memory leak in nilfs_sysfs_create_##name##_group nilfs2: fix NULL pointer in nilfs_##name##_attr_release nilfs2: fix memory leak in nilfs_sysfs_create_device_group trap: cleanup trap_init() init: move usermodehelper_enable() to populate_rootfs() ...
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