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From fb9a50a0ad64f28c00c7d0bbc4ee8908d4233593 Mon Sep 17 00:00:00 2001
From: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Date: Fri, 19 Feb 2016 15:21:18 +0100
Subject: [PATCH] udev/path_id: correct segmentation fault due to missing NULL
check
Running "udevadm test-builtin path_id /sys/devices/platform/" results
in a segmentation fault.
The problem is that udev_device_get_subsystem(dev) might return NULL
in a streq() call. Solve this problem by using streq_ptr() instead.
Cherry-picked from: 5181ab917d6407cb57043e98955f0de1614366ea
Resolves: #1365556
---
src/udev/udev-builtin-path_id.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/udev/udev-builtin-path_id.c b/src/udev/udev-builtin-path_id.c
index 8359e236a..a3b019bfc 100644
--- a/src/udev/udev-builtin-path_id.c
+++ b/src/udev/udev-builtin-path_id.c
@@ -729,7 +729,7 @@ restart:
* devices do not expose their buses and do not provide a unique
* and predictable name that way.
*/
- if (streq(udev_device_get_subsystem(dev), "block") && !supported_transport) {
+ if (streq_ptr(udev_device_get_subsystem(dev), "block") && !supported_transport) {
free(path);
path = NULL;
}