btrfs: handle allocation error in update_dev_stat_item

Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
mariux64 · Feb 28, 2017 · fa25299 · fa25299
1 parent 047e5e1
commit fa25299
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
@@ -6956,7 +6956,8 @@ static int update_dev_stat_item(struct btrfs_trans_handle *trans,
 	key.offset = device->devid;
 
 	path = btrfs_alloc_path();
-	BUG_ON(!path);
+	if (!path)
+		return -ENOMEM;
 	ret = btrfs_search_slot(trans, dev_root, &key, path, -1, 1);
 	if (ret < 0) {
 		btrfs_warn_in_rcu(fs_info,