Merge tag 'renesas-boards-cleanups2-for-v3.19' of git://git.kernel.org/pub/scm/linux...

[firefly-linux-kernel-4.4.55.git] / fs / ext4 / ialloc.c

diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 8012a5daf4019d953d3b3d79d5d2a2b4d41ac59f..ac644c31ca67472f3a16f91c6107e3d06772f66f 100644 (file)
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -887,6 +887,10 @@ got:
                struct buffer_head *block_bitmap_bh;
 
                block_bitmap_bh = ext4_read_block_bitmap(sb, group);
+               if (!block_bitmap_bh) {
+                       err = -EIO;
+                       goto out;
+               }
                BUFFER_TRACE(block_bitmap_bh, "get block bitmap access");
                err = ext4_journal_get_write_access(handle, block_bitmap_bh);
                if (err) {