udev: link-config - fix crash due to missing hwaddr

Reported by: master.nosferatu@gmail.com

diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
index e2280f1f6bca3f8c06f0e9f8b588f556a786d4a4..c2881d6b41d0f08c692263684f7946d787762b58 100644 (file)
--- a/src/udev/net/link-config.c
+++ b/src/udev/net/link-config.c
@@ -251,11 +251,12 @@ int link_config_get(link_config_ctx *ctx, struct udev_device *device,
         link_config *link;
 
         LIST_FOREACH(links, link, ctx->links) {
+                const char* attr_value = udev_device_get_sysattr_value(device, "address");
 
                 if (net_match_config(link->match_mac, link->match_path, link->match_driver,
                                      link->match_type, NULL, link->match_host,
                                      link->match_virt, link->match_kernel, link->match_arch,
-                                     ether_aton(udev_device_get_sysattr_value(device, "address")),
+                                     attr_value ? ether_aton(attr_value) : NULL,
                                      udev_device_get_property_value(device, "ID_PATH"),
                                      udev_device_get_driver(udev_device_get_parent(device)),
                                      udev_device_get_property_value(device, "ID_NET_DRIVER"),