From: Luca Berra <bluca@comedia.it>
Date: Sun, 12 Dec 2010 10:33:55 +0000 (+0100)
Subject: segfault in imsm create with wrong arguments
X-Git-Tag: mdadm-3.1.5~47
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a2973b6af235f993b3085cfb51bc50cc6ca38d38;p=thirdparty%2Fmdadm.git

segfault in imsm create with wrong arguments

When calling mdadm -C --metadata=imsm -l 1 /dev/sd..
mdadm segfaults in default_chunk_imsm()
above syntax is incorrect, but mdadm should error instead of segfaulting

Signed-off-by: Luca Berra <bluca@comedia.it>
Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/super-intel.c b/super-intel.c
index b880a74c..b3a116f9 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -4119,7 +4119,7 @@ static int default_chunk_imsm(struct supertype *st)
 {
 	struct intel_super *super = st->sb;
 
-	if (!super->orom)
+	if (!super || !super->orom)
 		return 0;
 
 	return imsm_orom_default_chunk(super->orom);