Shijie Luo d4fea27ffc mm: mempolicy: fix potential pte_unmap_unlock pte error ... commit 3f08842098e842c51e3b97d0dcdebf810b32558e upstream. When flags in queue_pages_pte_range don't have MPOL_MF_MOVE or MPOL_MF_MOVE_ALL bits, code breaks and passing origin pte - 1 to pte_unmap_unlock seems like not a good idea. queue_pages_pte_range can run in MPOL_MF_MOVE_ALL mode which doesn't migrate misplaced pages but returns with EIO when encountering such a page. Since commit a7f40cfe3b7a ("mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified") and early break on the first pte in the range results in pte_unmap_unlock on an underflow pte. This can lead to lockups later on when somebody tries to lock the pte resp. page_table_lock again.. Fixes: a7f40cfe3b7a ("mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified") Signed-off-by: Shijie Luo <luoshijie1@huawei.com> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Oscar Salvador <osalvador@suse.de> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Feilong Lin <linfeilong@huawei.com> Cc: Shijie Luo <luoshijie1@huawei.com> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/20201019074853.50856-1-luoshijie1@huawei.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-11-10 12:35:57 +01:00
..
kasan
backing-dev.c
balloon_compaction.c
bootmem.c
cleancache.c
cma.c
cma.h
cma_debug.c
compaction.c
debug.c
debug_page_ref.c
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c	mm/filemap.c: clear page error before actual read	2020-10-01 13:14:41 +02:00
frame_vector.c
frontswap.c
gup.c
gup_benchmark.c	mm/gup_benchmark.c: prevent integer overflow in ioctl	2019-12-01 09:17:07 +01:00
highmem.c
hmm.c	mm/memory_hotplug: shrink zones when offlining memory	2020-01-29 16:43:27 +01:00
huge_memory.c	mm/thp: fix __split_huge_pmd_locked() for migration PMD	2020-09-26 18:01:28 +02:00
hugetlb.c	mm/hugetlb: fix a race between hugetlb sysctl handlers	2020-09-09 19:04:32 +02:00
hugetlb_cgroup.c
hwpoison-inject.c
init-mm.c
internal.h	vmscan: return NODE_RECLAIM_NOSCAN in node_reclaim() when CONFIG_NUMA is n	2019-12-05 09:20:57 +01:00
interval_tree.c
Kconfig
Kconfig.debug
khugepaged.c	mm: khugepaged: recalculate min_free_kbytes after memory hotplug as expected by khugepaged	2020-10-14 10:31:26 +02:00
kmemleak-test.c
kmemleak.c	mm/kmemleak.c: use address-of operator on section symbols	2020-10-01 13:14:41 +02:00
ksm.c	mm/ksm: fix NULL pointer dereference when KSM zero page is enabled	2020-04-29 16:31:28 +02:00
list_lru.c
maccess.c	uaccess: Add non-pagefault user-space write function	2020-09-09 19:04:29 +02:00
madvise.c
Makefile
memblock.c	mm/page_alloc.c: deduplicate __memblock_free_early() and memblock_free()	2019-12-05 09:20:58 +01:00
memcontrol.c	mm/memcg: fix device private memcg accounting	2020-10-29 09:55:15 +01:00
memfd.c
memory-failure.c
memory.c	mm: avoid data corruption on CoW fault into PFN-mapped VMA	2020-10-01 13:14:36 +02:00
memory_hotplug.c	mm: don't rely on system state to detect hot-plug operations	2020-10-07 08:00:08 +02:00
mempolicy.c	mm: mempolicy: fix potential pte_unmap_unlock pte error	2020-11-10 12:35:57 +01:00
mempool.c
memtest.c
migrate.c	mm: move_pages: report the number of non-attempted pages	2020-02-11 04:33:56 -08:00
mincore.c
mlock.c
mm_init.c
mmap.c	mm/mmap.c: initialize align_offset explicitly for vm_unmapped_area	2020-10-01 13:14:42 +02:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c	mm, numa: fix bad pmd by atomically check for pmd_trans_huge when marking page tables prot_numa	2020-03-11 14:15:00 +01:00
mremap.c	mm: Fix mremap not considering huge pmd devmap	2020-06-07 13:17:53 +02:00
msync.c
nobootmem.c
nommu.c	x86/mm: split vmalloc_sync_all()	2020-03-25 08:06:13 +01:00
oom_kill.c	mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary	2020-10-29 09:55:15 +01:00
page-writeback.c	mm/page-writeback.c: avoid potential division by zero in wb_min_max_ratio()	2020-01-23 08:21:31 +01:00
page_alloc.c	mm: khugepaged: recalculate min_free_kbytes after memory hotplug as expected by khugepaged	2020-10-14 10:31:26 +02:00
page_counter.c	mm/page_counter.c: fix protection usage propagation	2020-08-21 11:05:33 +02:00
page_ext.c
page_idle.c
page_io.c	mm/page_io.c: do not free shared swap slots	2019-12-01 09:17:35 +01:00
page_isolation.c
page_owner.c
page_poison.c
page_vma_mapped.c
pagewalk.c	mm: pagewalk: fix termination condition in walk_pte_range()	2020-10-01 13:14:32 +02:00
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c	percpu: fix first chunk size calculation for populated bitmap	2020-09-23 12:11:01 +02:00
pgtable-generic.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c
rodata_test.c
shmem.c	shmem: fix possible deadlocks on shmlock_user_lock	2020-05-20 08:18:32 +02:00
slab.c
slab.h
slab_common.c	mm: memcg/slab: fix memory leak at non-root kmem_cache destroy	2020-07-29 10:16:57 +02:00
slob.c
slub.c	mm: slub: fix conversion of freelist_corrupted()	2020-09-09 19:04:31 +02:00
sparse-vmemmap.c
sparse.c	mm/memory_hotplug: remove "zone" parameter from sparse_remove_one_section	2020-01-29 16:43:26 +01:00
swap.c
swap_cgroup.c
swap_slots.c
swap_state.c	mm/swap_state: fix a data race in swapin_nr_pages	2020-10-01 13:14:47 +02:00
swapfile.c	mm, THP, swap: fix allocating cluster for swapfile by mistake	2020-10-01 13:14:53 +02:00
truncate.c
usercopy.c
userfaultfd.c
util.c	mm: add kvfree_sensitive() for freeing sensitive data objects	2020-06-22 09:05:01 +02:00
vmacache.c
vmalloc.c	mm/vmalloc.c: don't dereference possible NULL pointer in __vunmap()	2020-06-03 08:19:49 +02:00
vmpressure.c
vmscan.c	mm/vmscan.c: fix data races using kswapd_classzone_idx	2020-10-01 13:14:41 +02:00
vmstat.c	mm/vmstat.c: fix NUMA statistics updates	2019-12-13 08:51:27 +01:00
workingset.c
z3fold.c
zbud.c
zpool.c
zsmalloc.c	mm/zsmalloc.c: fix the migrated zspage statistics.	2020-01-09 10:19:00 +01:00
zswap.c