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| author | Andrea Arcangeli <aarcange@redhat.com> | 2010-09-22 13:05:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-09-22 17:22:40 -0700 |
| commit | 2aeadc30de45a72648f271603203ab392b80f607 (patch) | |
| tree | f3368916a4b1efdfa205ae0891733995a456957f | |
| parent | a247c3a97a0216b18a46243eda26081f1928ec37 (diff) | |
| download | linux-2aeadc30de45a72648f271603203ab392b80f607.tar.gz linux-2aeadc30de45a72648f271603203ab392b80f607.tar.bz2 linux-2aeadc30de45a72648f271603203ab392b80f607.zip | |
mmap: call unlink_anon_vmas() in __split_vma() in case of error
If __split_vma fails because of an out of memory condition the
anon_vma_chain isn't teardown and freed potentially leading to rmap walks
accessing freed vma information plus there's a memleak.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Johannes Weiner <jweiner@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/mmap.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 6128dc8e5ede..00161a48a451 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2009,6 +2009,7 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma, removed_exe_file_vma(mm); fput(new->vm_file); } + unlink_anon_vmas(new); out_free_mpol: mpol_put(pol); out_free_vma: |