diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 31d5061f14086de922c69b87e1c2e6a232a78fb6..26a28958355acc58e3875a5af8f4a431bbbc8bce 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -1878,6 +1878,7 @@ static void ext4_ext_try_to_merge_up(handle_t *handle,
 	path[0].p_hdr->eh_max = cpu_to_le16(max_root);
 
 	brelse(path[1].p_bh);
+	path[1].p_bh = NULL;
 	ext4_free_blocks(handle, inode, NULL, blk, 1,
 			 EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET);
 }