microsoft
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WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
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WSL2-Linux-Kernel/mm
История
Qi Zheng e4dc348914 mm: fix the deadlock in finish_fault() 
Commit 63f3655f95 ("mm, memcg: fix reclaim deadlock with writeback")
fix the following ABBA deadlock by pre-allocating the pte page table
without holding the page lock.

	                                lock_page(A)
                                        SetPageWriteback(A)
                                        unlock_page(A)
  lock_page(B)
                                        lock_page(B)
  pte_alloc_one
    shrink_page_list
      wait_on_page_writeback(A)
                                        SetPageWriteback(B)
                                        unlock_page(B)

                                        # flush A, B to clear the writeback

Commit f9ce0be71d ("mm: Cleanup faultaround and finish_fault()
codepaths") reworked the relevant code but ignored this race.  This will
cause the deadlock above to appear again, so fix it.

Link: https://lkml.kernel.org/r/20210721074849.57004-1-zhengqi.arch@bytedance.com
Fixes: f9ce0be71d ("mm: Cleanup faultaround and finish_fault() codepaths")
Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: 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>
 		2021-07-23 17:43:28 -07:00
..
kasan kasan: add memzero init for unaligned size at DEBUG 2021-07-15 10:13:49 -07:00
kfence kfence: skip all GFP_ZONEMASK allocations 2021-07-23 17:43:28 -07:00
Kconfig mm: introduce memfd_secret system call to create "secret" memory areas 2021-07-08 11:48:21 -07:00
Kconfig.debug
…
Makefile mm: introduce memfd_secret system call to create "secret" memory areas 2021-07-08 11:48:21 -07:00
backing-dev.c writeback, cgroup: remove wb from offline list before releasing refcnt 2021-07-23 17:43:28 -07:00
balloon_compaction.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
bootmem_info.c mm: memory_hotplug: factor out bootmem core functions to bootmem_info.c 2021-06-30 20:47:25 -07:00
cleancache.c
…
cma.c mm: use proper type for cma_[alloc|release] 2021-05-05 11:27:24 -07:00
cma.h mm: cma: support sysfs 2021-05-05 11:27:24 -07:00
cma_debug.c
…
cma_sysfs.c mm: cma: support sysfs 2021-05-05 11:27:24 -07:00
compaction.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
debug.c mm/debug: factor PagePoisoned out of __dump_page 2021-06-29 10:53:53 -07:00
debug_page_ref.c
…
debug_vm_pgtable.c mm/swapops: rework swap entry manipulation code 2021-07-01 11:06:03 -07:00
dmapool.c mm/dmapool: use DEVICE_ATTR_RO macro 2021-06-29 10:53:52 -07:00
early_ioremap.c
…
fadvise.c
…
failslab.c
…
filemap.c Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-07-03 11:30:04 -07:00
frontswap.c mm/mempool: minor coding style tweaks 2021-05-05 11:27:27 -07:00
gup.c mm: introduce memfd_secret system call to create "secret" memory areas 2021-07-08 11:48:21 -07:00
gup_test.c selftests/vm: gup_test: test faulting in kernel, and verify pinnable pages 2021-05-05 11:27:26 -07:00
gup_test.h selftests/vm: gup_test: fix test flag 2021-05-05 11:27:26 -07:00
highmem.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
hmm.c mm: device exclusive memory access 2021-07-01 11:06:03 -07:00
huge_memory.c mm/rmap: fix comments left over from recent changes 2021-07-11 15:05:15 -07:00
hugetlb.c mm/hugetlb: fix refs calculation from unaligned @vaddr 2021-07-15 10:13:49 -07:00
hugetlb_cgroup.c
…
hugetlb_vmemmap.c mm: hugetlb: introduce CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON 2021-06-30 20:47:26 -07:00
hugetlb_vmemmap.h mm: hugetlb: introduce nr_free_vmemmap_pages in the struct hstate 2021-06-30 20:47:25 -07:00
hwpoison-inject.c
…
init-mm.c mm: add setup_initial_init_mm() helper 2021-07-08 11:48:21 -07:00
internal.h mmap: make mlock_future_check() global 2021-07-08 11:48:20 -07:00
interval_tree.c
…
io-mapping.c
…
ioremap.c mm/ioremap: fix iomap_max_page_shift 2021-05-14 19:41:32 -07:00
khugepaged.c mm, thp: relax the VM_DENYWRITE constraint on file-backed THPs 2021-06-30 20:47:29 -07:00
kmemleak.c mm/kmemleak: fix possible wrong memory scanning period 2021-06-29 10:53:47 -07:00
ksm.c mm/ksm: use vma_lookup() in find_mergeable_vma() 2021-06-29 10:53:52 -07:00
list_lru.c
…
maccess.c
…
madvise.c mm/madvise: introduce MADV_POPULATE_(READ|WRITE) to prefault page tables 2021-06-30 20:47:30 -07:00
mapping_dirty_helpers.c mm/mapping_dirty_helpers: remove double Note in kerneldoc 2021-07-01 11:06:02 -07:00
memblock.c memblock: make for_each_mem_range() traverse MEMBLOCK_HOTPLUG regions 2021-07-23 17:43:28 -07:00
memcontrol.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
memfd.c
…
memory-failure.c mm: fix spelling mistakes 2021-07-01 11:06:02 -07:00
memory.c mm: fix the deadlock in finish_fault() 2021-07-23 17:43:28 -07:00
memory_hotplug.c mm/memory_hotplug: fix kerneldoc comment for __remove_memory 2021-07-01 11:06:02 -07:00
mempolicy.c mm/mempolicy: use unified 'nodes' for bind/interleave/prefer policies 2021-06-30 20:47:29 -07:00
mempool.c kasan: use separate (un)poison implementation for integrated init 2021-06-04 19:32:21 +01:00
memremap.c
…
memtest.c
…
migrate.c mm: Make copy_huge_page() always available 2021-07-12 11:30:56 -07:00
mincore.c
…
mlock.c mm: introduce memfd_secret system call to create "secret" memory areas 2021-07-08 11:48:21 -07:00
mm_init.c
…
mmap.c mmap: make mlock_future_check() global 2021-07-08 11:48:20 -07:00
mmap_lock.c mm: mmap_lock: fix disabling preemption directly 2021-07-23 17:43:28 -07:00
mmu_gather.c
…
mmu_notifier.c
…
mmzone.c
…
mprotect.c mm: device exclusive memory access 2021-07-01 11:06:03 -07:00
mremap.c mm/mremap: allow arch runtime override 2021-07-08 11:48:23 -07:00
msync.c
…
nommu.c mm/nommu: unexport do_munmap() 2021-06-30 20:47:30 -07:00
oom_kill.c Merge branch 'core-rcu-2021.07.04' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu 2021-07-04 12:58:33 -07:00
page-writeback.c for-5.14/block-2021-06-29 2021-06-30 12:12:56 -07:00
page_alloc.c mm: page_alloc: fix page_poison=1 / INIT_ON_ALLOC_DEFAULT_ON interaction 2021-07-23 17:43:28 -07:00
page_counter.c
…
page_ext.c mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM 2021-06-29 10:53:55 -07:00
page_idle.c
…
page_io.c
…
page_isolation.c
…
page_owner.c mm/page_owner: constify dump_page_owner 2021-06-29 10:53:53 -07:00
page_poison.c
…
page_reporting.c mm/page_reporting: allow driver to specify reporting order 2021-06-29 10:53:47 -07:00
page_reporting.h mm/page_reporting: export reporting order as module parameter 2021-06-29 10:53:47 -07:00
page_vma_mapped.c mm: device exclusive memory access 2021-07-01 11:06:03 -07:00
pagewalk.c mm: pagewalk: fix walk for hugepage tables 2021-06-29 10:53:49 -07:00
percpu-internal.h Merge branch 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu 2021-07-01 17:17:24 -07:00
percpu-km.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
percpu-stats.c percpu: rework memcg accounting 2021-06-05 20:43:15 +00:00
percpu-vm.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
percpu.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
pgalloc-track.h mm: fix typos in comments 2021-05-07 00:26:35 -07:00
pgtable-generic.c mm/thp: fix __split_huge_pmd_locked() on shmem migration entry 2021-06-16 09:24:42 -07:00
process_vm_access.c mm/process_vm_access.c: remove duplicate include 2021-05-05 11:27:27 -07:00
ptdump.c
…
readahead.c
…
rmap.c mm/rmap: fix munlocking Anon THP with mlocked ptes 2021-07-12 11:30:56 -07:00
rodata_test.c
…
secretmem.c mm/secretmem: wire up ->set_page_dirty 2021-07-23 17:43:28 -07:00
shmem.c Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
shuffle.c
…
shuffle.h mm/shuffle: fix section mismatch warning 2021-05-22 15:09:07 -10:00
slab.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
slab.h mm: move helper to check slub_debug_enabled 2021-07-15 10:13:49 -07:00
slab_common.c Merge branch 'core-rcu-2021.07.04' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu 2021-07-04 12:58:33 -07:00
slob.c
…
slub.c Revert "mm/slub: use stackdepot to save stack trace in objects" 2021-07-17 13:27:00 -07:00
sparse-vmemmap.c mm: sparsemem: split the huge PMD mapping of vmemmap pages 2021-06-30 20:47:26 -07:00
sparse.c mm: memory_hotplug: factor out bootmem core functions to bootmem_info.c 2021-06-30 20:47:25 -07:00
swap.c mm: fix typos and grammar error in comments 2021-07-01 11:06:02 -07:00
swap_cgroup.c
…
swap_slots.c mm/swap_slots.c: delete meaningless forward declarations 2021-06-29 10:53:49 -07:00
swap_state.c swap: check mapping_empty() for swap cache before being freed 2021-06-29 10:53:49 -07:00
swapfile.c mm: fix spelling mistakes 2021-07-01 11:06:02 -07:00
truncate.c mm/thp: unmap_mapping_page() to fix THP truncate_cleanup_page() 2021-06-16 09:24:42 -07:00
usercopy.c
…
userfaultfd.c userfaultfd/shmem: modify shmem_mfill_atomic_pte to use install_pte() 2021-06-30 20:47:27 -07:00
util.c mm: Make copy_huge_page() always available 2021-07-12 11:30:56 -07:00
vmacache.c
…
vmalloc.c mm/vmalloc: include header for prototype of set_iounmap_nonlazy 2021-07-01 11:06:02 -07:00
vmpressure.c
…
vmscan.c mm/vmscan: remove kerneldoc-like comment from isolate_lru_pages 2021-07-01 11:06:02 -07:00
vmstat.c mm/vmstat: inline NUMA event counter updates 2021-06-29 10:53:54 -07:00
workingset.c mm: workingset: define macro WORKINGSET_SHIFT 2021-06-30 20:47:28 -07:00
z3fold.c mm/z3fold: add kerneldoc fields for z3fold_pool 2021-07-01 11:06:03 -07:00
zbud.c mm/zbud: add kerneldoc fields for zbud_pool 2021-07-01 11:06:03 -07:00
zpool.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
zsmalloc.c mm/zsmalloc.c: improve readability for async_free_zspage() 2021-07-01 11:06:02 -07:00
zswap.c mm/zswap.c: fix two bugs in zswap_writeback_entry() 2021-06-30 20:47:31 -07:00