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authorLiu Bo <bo.li.liu@oracle.com>2013-03-04 16:25:36 +0000
committerJosef Bacik <jbacik@fusionio.com>2013-03-04 16:33:22 -0500
commit8f71f3e0e4fb5a2445fb93d3057a33aefc4aa30d (patch)
tree3a138ce21038700b6cd81db196740de9657927a4 /fs
parent00d71c9c17b1fd28fa54f323a29a0e23c6d3de40 (diff)
Btrfs: check for NULL pointer in updating reloc roots
Add a check for NULL pointer to avoid invalid reference. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/relocation.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index ba5a3210da9a..16e0c6fbdbed 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1269,6 +1269,8 @@ static int __update_reloc_root(struct btrfs_root *root, int del)
}
spin_unlock(&rc->reloc_root_tree.lock);
+ if (!node)
+ return 0;
BUG_ON((struct btrfs_root *)node->data != root);
if (!del) {

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