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authorRik van Riel <riel@redhat.com>2010-04-05 12:13:33 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-04-05 09:15:51 -0700
commit4946d54cb55e86a156216fcfeed5568514b0830f (patch)
treea27a670f2cbe7d689588af24c6c9cda82690c7c2 /mm/rmap.c
parentdb217dece3003df0841bacf9556b5c06aa097dae (diff)
rmap: fix anon_vma_fork() memory leak
Fix a memory leak in anon_vma_fork(), where we fail to tear down the anon_vmas attached to the new VMA in case setting up the new anon_vma fails. This bug also has the potential to leave behind anon_vma_chain structs with pointers to invalid memory. Reported-by: Minchan Kim <minchan.kim@gmail.com> Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index fcd593c9c997..eaa7a09eb72e 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -232,6 +232,7 @@ int anon_vma_fork(struct vm_area_struct *vma, struct vm_area_struct *pvma)
out_error_free_anon_vma:
anon_vma_free(anon_vma);
out_error:
+ unlink_anon_vmas(vma);
return -ENOMEM;
}

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