tree 7e4a4a164b8153cf463662fbc2ce00f5671f4fa6
parent 60d2adbb1e7fee1cb4bc67f70bd0bd8ace7b6c3c
author Daniel J Blueman <daniel.blueman@gmail.com> 1308841261 +0800
committer David Sterba <dsterba@suse.cz> 1319127050 +0200

btrfs: fix oops on failure path

If lookup_extent_backref fails, path->nodes[0] reasonably could be
null along with other callers of btrfs_print_leaf, so ensure we have a
valid extent buffer before dereferencing.

Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com>