From: Artur Wojcik <artur.wojcik@intel.com>
Date: Thu, 10 Dec 2009 19:03:39 +0000 (-0700)
Subject: Fix for NULL pointer dereference.
X-Git-Tag: mdadm-3.1.2~63^2~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d10d56feb88ef8a625ec39e04d7c8b711bf08870;p=thirdparty%2Fmdadm.git

Fix for NULL pointer dereference.

Suspicious dereference of pointer 'super' before NULL check at
line 3429.

Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

diff --git a/super-intel.c b/super-intel.c
index 4b8e2b77..03dcbd5b 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -3426,7 +3426,7 @@ 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;
@@ -3436,6 +3436,7 @@ static int validate_geometry_imsm_volume(struct supertype *st, int level,
 	/* We must have the container info already read in. */
 	if (!super)
 		return 0;
+	mpb = super->anchor;
 
 	if (!is_raid_level_supported(super->orom, level, raiddisks)) {
 		pr_vrb(": platform does not support raid%d with %d disk%s\n",