btrfs: fix dereference of ERR_PTR value

smatch reports: btrfs_recover_log_trees error: 'wc.replay_dest' dereferencing possible ERR_PTR() Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@oracle.com>
mariux64 · Jun 17, 2011 · 3ed4498 · 3ed4498
1 parent e038dca
commit 3ed4498
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
@@ -3177,7 +3177,7 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)
 		tmp_key.offset = (u64)-1;
 
 		wc.replay_dest = btrfs_read_fs_root_no_name(fs_info, &tmp_key);
-		BUG_ON(!wc.replay_dest);
+		BUG_ON(IS_ERR_OR_NULL(wc.replay_dest));
 
 		wc.replay_dest->log_root = log;
 		btrfs_record_root_in_trans(trans, wc.replay_dest);