From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Tue, 1 Nov 2011 15:09:34 +0000 (+0100)
Subject: validate_geometry_imsm_volume(): Avoid NULL pointer dereference
X-Git-Tag: mdadm-3.2.3~78
X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=commitdiff_plain;h=b2916f251404433aa1eafd36cdb9e19a692f2269

validate_geometry_imsm_volume(): Avoid NULL pointer dereference

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 34a4b343..0193fe7f 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -5139,7 +5139,7 @@ static int validate_geometry_imsm_volume(struct supertype *st, int level,
 {
 	struct stat stb;
 	struct intel_super *super = st->sb;
-	struct imsm_super *mpb = super->anchor;
+	struct imsm_super *mpb;
 	struct dl *dl;
 	unsigned long long pos = 0;
 	unsigned long long maxsize;
@@ -5150,6 +5150,8 @@ static int validate_geometry_imsm_volume(struct supertype *st, int level,
 	if (!super)
 		return 0;
 
+	mpb = super->anchor;
+
 	if (mpb->num_raid_devs > 0 && mpb->num_disks != raiddisks) {
 		fprintf(stderr, Name ": the option-rom requires all "
 			"member disks to be a member of all volumes.\n");