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(parent: ce59729) | patch
mm/ksm: handle protnone saved writes when making page write protect
authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Fri, 24 Feb 2017 22:59:19 +0000 (14:59 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 25 Feb 2017 01:46:56 +0000 (17:46 -0800)
commit06e737da054c24c51bc3498e9c1d687ed0169082
tree4884ad51a34aa931eef71932ed7546ab390f51eftree | snapshot
parentce59729718636179da66cb88685148471d65266acommit | diff
mm/ksm: handle protnone saved writes when making page write protect

Without this KSM will consider the page write protected, but a numa
fault can later mark the page writable.  This can result in memory
corruption.

Link: http://lkml.kernel.org/r/1487498625-10891-3-git-send-email-aneesh.kumar@linux.vnet.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/asm-generic/pgtable.h diff | blob | history
mm/ksm.c diff | blob | history
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