[PATCH] Btrfs: add missing error check to find_parent_nodes

[Filipe David Borba Manana]

Signed-off-by: Filipe David Borba Manana <fdman...@gmail.com>
---
 fs/btrfs/backref.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 8bc5e8c..1ba87c5 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -935,6 +935,8 @@ again:
                                }
                                ret = find_extent_in_eb(eb, bytenr,
                                                        *extent_item_pos, &eie);
+                               if (ret < 0)
+                                       goto out;
                                ref->inode_list = eie;
                                free_extent_buffer(eb);
                        }
-- 
1.7.9.5

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