From ad9fdd15111cd58fbaba7a3c6c2d7121fb55ebab Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@newdream.net>
Date: Mon, 20 Jul 2009 11:36:23 -0700
Subject: [PATCH] kclient: don't croak on null dev_name

As currently caused by bad mount.ceph (mount -t ceph foo:bar mnt).
---
 src/kernel/super.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/kernel/super.c b/src/kernel/super.c
index a3cccf3ef968e..46e33dddba127 100644
--- a/src/kernel/super.c
+++ b/src/kernel/super.c
@@ -492,9 +492,14 @@ static int parse_mount_args(int flags, char *options, const char *dev_name,
 	args->max_readdir = 1024;
 
 	/* ip1[:port1][,ip2[:port2]...]:/subdir/in/fs */
+	if (!dev_name)
+		return -EINVAL;
 	c = strstr(dev_name, ":/");
-	if (c == NULL)
+	if (c == NULL) {
+		pr_err("ceph device name is missing path (no :/ in %s)\n",
+		       dev_name);
 		return -EINVAL;
+	}
 	*c = 0;
 
 	/* get mon ip(s) */
-- 
2.39.5