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| author | Liu Bo <bo.li.liu@oracle.com> | 2013-03-04 16:25:36 +0000 |
|---|---|---|
| committer | Josef Bacik <jbacik@fusionio.com> | 2013-03-04 16:33:22 -0500 |
| commit | 8f71f3e0e4fb5a2445fb93d3057a33aefc4aa30d (patch) | |
| tree | 3a138ce21038700b6cd81db196740de9657927a4 | |
| parent | 00d71c9c17b1fd28fa54f323a29a0e23c6d3de40 (diff) | |
| download | linux-stable-8f71f3e0e4fb5a2445fb93d3057a33aefc4aa30d.tar.gz linux-stable-8f71f3e0e4fb5a2445fb93d3057a33aefc4aa30d.tar.bz2 linux-stable-8f71f3e0e4fb5a2445fb93d3057a33aefc4aa30d.zip | |
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>
| -rw-r--r-- | fs/btrfs/relocation.c | 2 |
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) { |