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f23a60b9d3
android_kernel_samsung_a7y1.../mm
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Andrey Ryabinin f23a60b9d3 mm/ksm.c: don't WARN if page is still mapped in remove_stable_node() 
commit 9a63236f1ad82d71a98aa80320b6cb618fb32f44 upstream.

It's possible to hit the WARN_ON_ONCE(page_mapped(page)) in
remove_stable_node() when it races with __mmput() and squeezes in
between ksm_exit() and exit_mmap().

  WARNING: CPU: 0 PID: 3295 at mm/ksm.c:888 remove_stable_node+0x10c/0x150

  Call Trace:
   remove_all_stable_nodes+0x12b/0x330
   run_store+0x4ef/0x7b0
   kernfs_fop_write+0x200/0x420
   vfs_write+0x154/0x450
   ksys_write+0xf9/0x1d0
   do_syscall_64+0x99/0x510
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

Remove the warning as there is nothing scary going on.

Link: http://lkml.kernel.org/r/20191119131850.5675-1-aryabinin@virtuozzo.com
Fixes: cbf86cfe04a6 ("ksm: remove old stable nodes more thoroughly")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Andrea Arcangeli <aarcange@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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-07 12:33:44 +02:00
..
kasan A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
backing-dev.c writeback: synchronize sync(2) against cgroup writeback membership switches 2020-04-06 18:12:57 +02:00
balloon_compaction.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bootmem.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cleancache.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cma_debug.c mm/cma_debug.c: fix the break condition in cma_maxchunk_get() 2020-04-06 19:01:41 +02:00
cma.c mm/cma.c: fail if fixed declaration can't be honored 2020-04-06 20:27:19 +02:00
cma.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
compaction.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
debug-pagealloc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
debug.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
dmapool.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
early_ioremap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
fadvise.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
failslab.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
filemap.c mm/filemap.c: don't initiate writeback if mapping has no dirty pages 2020-04-07 11:58:51 +02:00
frame_vector.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
frontswap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
gup.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
highmem.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
hpa.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
huge_memory.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
hugetlb_cgroup.c mm: hugetlb: switch to css_tryget() in hugetlb_cgroup_charge_cgroup() 2020-04-07 12:26:33 +02:00
hugetlb.c hugetlbfs: on restore reserve error path retain subpool reservation 2020-04-06 19:01:37 +02:00
hwpoison-inject.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
init-mm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
internal.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
interval_tree.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
io_record.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig.debug A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kmemcheck.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kmemleak-test.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
kmemleak.c mm/kmemleak.c: fix check for softirq context 2020-04-06 20:16:21 +02:00
ksm.c mm/ksm.c: don't WARN if page is still mapped in remove_stable_node() 2020-04-07 12:33:44 +02:00
list_lru.c mm/list_lru.c: fix memory leak in __memcg_init_list_lru_node 2020-04-06 19:02:54 +02:00
maccess.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
madvise.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Makefile A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memblock.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memcontrol.c mm: memcg: switch to css_tryget() in get_mem_cgroup_from_mm() 2020-04-07 12:26:31 +02:00
memory_hotplug.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memory-failure.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memory.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mempolicy.c mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified 2020-04-06 13:43:53 +02:00
mempool.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
memtest.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
migrate.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mincore.c mm/mincore.c: make mincore() more conservative 2020-04-06 18:12:28 +02:00
mlock.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mm_init.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mmap.c Revert "coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping" 2020-04-06 22:47:46 +05:30
mmu_context.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mmu_notifier.c mm/mmu_notifier: use hlist_add_head_rcu() 2020-04-06 20:16:25 +02:00
mmzone.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mprotect.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mremap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
msync.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
nobootmem.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
nommu.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
oom_kill.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_alloc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_counter.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_ext.c mm/page_ext.c: fix an imbalance with kmemleak 2020-04-06 14:22:59 +02:00
page_idle.c mm/page_idle.c: fix oops because end_pfn is larger than max_pfn 2020-04-06 19:14:16 +02:00
page_io.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_isolation.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page_owner.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
page-writeback.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
pagewalk.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
percpu-km.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
percpu-vm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
percpu.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
pgtable-generic.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
process_vm_access.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
quicklist.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
readahead.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
rmap.c mm/rmap: replace BUG_ON(anon_vma->degree) with VM_WARN_ON 2020-04-06 11:16:40 +02:00
shmem.c memfd: Use radix_tree_deref_slot_protected to avoid the warning. 2020-04-07 12:31:09 +02:00
showmem_extra.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
slab_common.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
slab.c mm/slab.c: kmemleak no scan alien caches 2020-04-06 14:23:23 +02:00
slab.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
slob.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
slub.c mm/slub: fix a deadlock in show_slab_objects() 2020-04-07 09:26:52 +02:00
sparse-vmemmap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sparse.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
swap_cgroup.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
swap_state.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
swap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
swapfile.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
truncate.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
usercopy.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
userfaultfd.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
util.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vmacache.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vmalloc.c mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy() 2020-04-06 20:38:23 +02:00
vmpressure.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vmscan.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vmstat.c mm, vmstat: hide /proc/pagetypeinfo from normal users 2020-04-07 11:48:32 +02:00
workingset.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
zbud.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
zpool.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
zsmalloc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
zswap.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30