diff options
| author | Hillf Danton <dhillf@gmail.com> | 2011-11-15 14:36:12 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-12-09 08:54:31 -0800 |
| commit | d3b2937da9fc51f48ae77735e78be53a8a4c0ae4 (patch) | |
| tree | 105a72d518e1c01acedf6b8445770ce17868fd44 | |
| parent | 6d10c223ab5a75fa961019fa91fc811128cb876b (diff) | |
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 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; |