diff options
| author | Hugh Dickins <hughd@google.com> | 2014-06-23 13:22:07 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-09 10:51:22 -0700 |
| commit | 50a28baa75d832d8f74e1f6bf7ca247eb92b77be (patch) | |
| tree | 47e17bde702b33a4ee93d3eff00315f4501bce35 /arch/x86/mm/gup.c | |
| parent | 2bcdd4933ff4dc46445dcae93cb37c648283b782 (diff) | |
mm: fix crashes from mbind() merging vmas
commit d05f0cdcbe6388723f1900c549b4850360545201 upstream.
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>
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>
Diffstat (limited to 'arch/x86/mm/gup.c')
0 files changed, 0 insertions, 0 deletions