diff --git a/fs/block_dev.c b/fs/block_dev.c
index bc8f27c..702b88c 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1131,6 +1131,8 @@
 	filp->f_flags |= O_LARGEFILE;
 
 	bdev = bd_acquire(inode);
+	if (bdev == NULL)
+		return -ENOMEM;
 
 	res = do_open(bdev, filp, BD_MUTEX_NORMAL);
 	if (res)