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| author | Hillf Danton <dhillf@gmail.com> | 2011-11-15 14:36:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-15 22:41:52 -0200 |
| commit | ea4039a34c4c206d015d34a49d0b00868e37db1d (patch) | |
| tree | 1c7c38a83e0765f717f11079c573bb94f7445b77 /mm | |
| parent | 66e13e66b6c4e5b2ecd6225e1f8437640cfb6498 (diff) | |
| download | lwn-ea4039a34c4c206d015d34a49d0b00868e37db1d.tar.gz lwn-ea4039a34c4c206d015d34a49d0b00868e37db1d.zip | |
hugetlb: release pages in the error path of hugetlb_cow()
If we fail to prepare an anon_vma, the {new, old}_page should be released,
or they will leak.
Signed-off-by: Hillf Danton <dhillf@gmail.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <jweiner@redhat.com>
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/hugetlb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index dae27ba3be2c..bb28a5f9db8d 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2422,6 +2422,8 @@ retry_avoidcopy: * anon_vma prepared. */ if (unlikely(anon_vma_prepare(vma))) { + page_cache_release(new_page); + page_cache_release(old_page); /* Caller expects lock to be held */ spin_lock(&mm->page_table_lock); return VM_FAULT_OOM; |