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| author | Hillf Danton <dhillf@gmail.com> | 2011-11-15 14:36:12 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-12-09 08:52:37 -0800 |
| commit | d98627dd4a3e2cd4a7602a845fd1c1c78d372e97 (patch) | |
| tree | 8ec13bb0c0c05ad7da6659bf91098bf1a197c5c1 | |
| parent | bfc769031803ed194374d4e79d30e6ee103d822e (diff) | |
| download | kernel_samsung_smdk4412-d98627dd4a3e2cd4a7602a845fd1c1c78d372e97.tar.gz kernel_samsung_smdk4412-d98627dd4a3e2cd4a7602a845fd1c1c78d372e97.tar.bz2 kernel_samsung_smdk4412-d98627dd4a3e2cd4a7602a845fd1c1c78d372e97.zip | |
hugetlb: release pages in the error path of hugetlb_cow()
commit ea4039a34c4c206d015d34a49d0b00868e37db1d upstream.
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>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -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 bfcf153bc82..2b57cd96dd5 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2415,6 +2415,8 @@ 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; |