From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Wed, 2 Nov 2011 21:09:56 +0000 (+1100)
Subject: fd2devname(): Don't dereference NULL pointer
X-Git-Tag: mdadm-3.2.3~66
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7897de29b552b4395a31722a07ff74ba01673fc1;p=thirdparty%2Fmdadm.git

fd2devname(): Don't dereference NULL pointer

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/super-intel.c b/super-intel.c
index b583b35c..f776be9e 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -2868,8 +2868,10 @@ static void fd2devname(int fd, char *name)
 	
 	dname[rv] = '\0';
 	nm = strrchr(dname, '/');
-	nm++;
-	snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm);
+	if (nm) {
+		nm++;
+		snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm);
+	}
 }
 
 extern int scsi_get_serial(int fd, void *buf, size_t buf_len);