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authorAndrea Arcangeli <aarcange@redhat.com>2010-09-22 13:05:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-09-22 17:22:40 -0700
commit2aeadc30de45a72648f271603203ab392b80f607 (patch)
treef3368916a4b1efdfa205ae0891733995a456957f /mm
parenta247c3a97a0216b18a46243eda26081f1928ec37 (diff)
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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>
Diffstat (limited to 'mm')
-rw-r--r--mm/mmap.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index 6128dc8e5ed..00161a48a45 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: