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
backing-dev.c	writeback, cgroup: remove wb from offline list before releasing refcnt	2021-07-23 17:43:28 -07:00
balloon_compaction.c
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
cma.h
cma_debug.c
cma_sysfs.c
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
gup.c	mm: introduce memfd_secret system call to create "secret" memory areas	2021-07-08 11:48:21 -07:00
gup_test.c
gup_test.h
highmem.c
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
Kconfig	mm: introduce memfd_secret system call to create "secret" memory areas	2021-07-08 11:48:21 -07:00
Kconfig.debug
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
Makefile	mm: introduce memfd_secret system call to create "secret" memory areas	2021-07-08 11:48:21 -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
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
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
slab.c
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
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