From: Andrei Borzenkov <arvidjaar@gmail.com>
Date: Sat, 9 Jan 2016 18:25:22 +0000 (+0300)
Subject: setup: fix NULL pointer dereference
X-Git-Tag: 2.02-beta3~93
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a5a3c69630ea117f54c07e891007fe3374581ba;p=thirdparty%2Fgrub.git

setup: fix NULL pointer dereference

Check return value of grub_guess_root_devices

Found by: Coverity scan.
CID: 73638, 73751
---

diff --git a/util/setup.c b/util/setup.c
index d74567d0a..8aa5a39a7 100644
--- a/util/setup.c
+++ b/util/setup.c
@@ -312,6 +312,9 @@ SETUP (const char *dir,
     char **cur;
     int found = 0;
 
+    if (!root_devices)
+      grub_util_error (_("cannot find a device for %s (is /dev mounted?)"), dir);
+
     for (cur = root_devices; *cur; cur++)
       {
 	char *drive;