diff options
| author | Hugh Dickins <hughd@google.com> | 2014-06-24 00:22:07 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-24 03:47:44 +0400 |
| commit | d05f0cdcbe6388723f1900c549b4850360545201 (patch) | |
| tree | 7dd172c9cebd9e3ec76d4590a061954ac054adec /mm/madvise.c | |
| parent | b43ae21bd1d8199df10548f3fc0d806052027f29 (diff) | |
| download | linux-d05f0cdcbe6388723f1900c549b4850360545201.tar.xz | |
mm: fix crashes from mbind() merging vmas
In v2.6.34 commit 9d8cebd4bcd7 ("mm: fix mbind vma merge problem")
introduced vma merging to mbind(), but it should have also changed the
convention of passing start vma from queue_pages_range() (formerly
check_range()) to new_vma_page(): vma merging may have already freed
that structure, resulting in BUG at mm/mempolicy.c:1738 and probably
worse crashes.
Fixes: 9d8cebd4bcd7 ("mm: fix mbind vma merge problem")
Reported-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Tested-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: <stable@vger.kernel.org> [2.6.34+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/madvise.c')
0 files changed, 0 insertions, 0 deletions