Minchan Kim 47aee4d8e3 thp: use is_zero_pfn() only after pte_present() check ... Use is_zero_pfn() on pteval only after pte_present() check on pteval (It might be better idea to introduce is_zero_pte() which checks pte_present() first). Otherwise when working on a swap or migration entry and if pte_pfn's result is equal to zero_pfn by chance, we lose user's data in __collapse_huge_page_copy(). So if you're unlucky, the application segfaults and finally you could see below message on exit: BUG: Bad rss-counter state mm:ffff88007f099300 idx:2 val:3 Fixes: ca0984caa8 ("mm: incorporate zero pages into transparent huge pages") Signed-off-by: Minchan Kim <minchan@kernel.org> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Mel Gorman <mgorman@suse.de> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: <stable@vger.kernel.org> [4.1+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-10-23 17:55:10 +09:00
..
kasan	kasan: fix last shadow judgement in memory_is_poisoned_16()	2015-09-17 21:16:07 -07:00
backing-dev.c
balloon_compaction.c
bootmem.c
cleancache.c
cma_debug.c
cma.c	mm: cma: fix incorrect type conversion for size during dma allocation	2015-10-23 17:55:10 +09:00
cma.h
compaction.c
debug-pagealloc.c
debug.c
dmapool.c	dmapool: fix overflow condition in pool_find_page()	2015-10-01 21:42:35 -04:00
early_ioremap.c
fadvise.c
failslab.c
filemap.c	Revert "fs: do not prefault sys_write() user buffer pages"	2015-10-07 08:32:38 +01:00
frame_vector.c
frontswap.c
gup.c
highmem.c
huge_memory.c	thp: use is_zero_pfn() only after pte_present() check	2015-10-23 17:55:10 +09:00
hugetlb_cgroup.c
hugetlb.c	mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy a fault	2015-10-01 21:42:35 -04:00
hwpoison-inject.c
init-mm.c
internal.h
interval_tree.c
Kconfig
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
list_lru.c
maccess.c
madvise.c
Makefile
memblock.c
memcontrol.c	memcg: convert threshold to bytes	2015-10-16 11:42:28 -07:00
memory_hotplug.c
memory-failure.c
memory.c	mm, dax: fix DAX deadlocks	2015-10-16 11:42:28 -07:00
mempolicy.c
mempool.c
memtest.c
migrate.c	memcg: fix dirty page migration	2015-10-01 21:42:35 -04:00
mincore.c
mlock.c
mm_init.c
mmap.c	mm, dax: VMA with vm_ops->pfn_mkwrite wants to be write-notified	2015-09-22 15:09:53 -07:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c
nommu.c
oom_kill.c
page_alloc.c
page_counter.c
page_ext.c
page_idle.c
page_io.c
page_isolation.c
page_owner.c
page-writeback.c
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c
process_vm_access.c
quicklist.c
readahead.c	mm, fs: obey gfp_mapping for add_to_page_cache()	2015-10-16 11:42:28 -07:00
rmap.c
shmem.c
slab_common.c
slab.c	mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1)	2015-10-01 21:42:35 -04:00
slab.h
slob.c
slub.c
sparse-vmemmap.c
sparse.c
swap_cgroup.c
swap_state.c
swap.c
swapfile.c
truncate.c
userfaultfd.c
util.c
vmacache.c
vmalloc.c
vmpressure.c
vmscan.c	vmscan: fix sane_reclaim helper for legacy memcg	2015-09-22 15:09:53 -07:00
vmstat.c	vmstat: explicitly schedule per-cpu work on the CPU we need it to run on	2015-10-15 13:01:50 -07:00
workingset.c
zbud.c
zpool.c
zsmalloc.c
zswap.c