From d737278091fccda77f6896012ba86c5ffb57993f Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Thu, 12 Jun 2014 00:14:59 -0500 Subject: [PATCH] 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 Signed-off-by: Chris Mason --- fs/btrfs/qgroup.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index cf5aead95a7f..98cb6b2630f9 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -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, -- 2.20.1