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btrfs: free ulist in qgroup_shared_accounting() error path 

If tmp = ulist_alloc(GFP_NOFS) fails, we return without
freeing the previously allocated qgroups = ulist_alloc(GFP_NOFS)
and cause a memory leak.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Eric Sandeen 2014-06-12 00:14:59 -05:00 committed by Chris Mason
parent b050f9f6dd
commit d737278091
1 changed files with 3 additions and 1 deletions
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4
fs/btrfs/qgroup.c
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@ -1798,8 +1798,10 @@ static int qgroup_shared_accounting(struct btrfs_trans_handle *trans,
return -ENOMEM;
tmp = ulist_alloc(GFP_NOFS);
if (!tmp)
if (!tmp) {
ulist_free(qgroups);
return -ENOMEM;
}
btrfs_get_tree_mod_seq(fs_info, &elem);
ret = btrfs_find_all_roots(trans, fs_info, oper->bytenr, elem.seq,