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-rw-r--r--fs/btrfs/volumes.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index ceced5e56c5a..30b5646b2c0d 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2948,7 +2948,17 @@ again:
mutex_unlock(&fs_info->delete_unused_bgs_mutex);
goto error;
}
- BUG_ON(ret == 0); /* Corruption */
+ if (ret == 0) {
+ /*
+ * On the first search we would find chunk tree with
+ * offset -1, which is not possible. On subsequent
+ * loops this would find an existing item on an invalid
+ * offset (one less than the previous one, wrong
+ * alignment and size).
+ */
+ ret = -EUCLEAN;
+ goto error;
+ }
ret = btrfs_previous_item(chunk_root, path, key.objectid,
key.type);