Btrfs: fix panic in balance due to EIO

[cascardo/linux.git] / fs / btrfs / relocation.c

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 13c9a48..97cafe7 100644 (file)
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1171,8 +1171,12 @@ out:
                        lower = list_entry(useless.next,
                                           struct backref_node, list);
                        list_del_init(&lower->list);
+                       if (lower == node)
+                               node = NULL;
                        free_backref_node(cache, lower);
                }
+
+               free_backref_node(cache, node);
                return ERR_PTR(err);
        }
        ASSERT(!node || !node->detached);