[dm-devel] [PATCH 2/6] libmultipath: check udev* return value in ccw_sysfs_pathinfo

[lixiaokeng]

We check the return value of udev_device_get_sysname.

Signed-off-by:Lixiaokeng<lixiaokeng at huawei.com>
Signed-off-by: Zhiqiang Liu <liuzhiqiang26 at huawei.com>
Signed-off-by: Linfeilong <linfeilong at huawei.com>
---
 libmultipath/discovery.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
index 4264b0da..27cb67f8 100644
--- a/libmultipath/discovery.c
+++ b/libmultipath/discovery.c
@@ -1471,6 +1471,8 @@ ccw_sysfs_pathinfo (struct path *pp, const struct _vector *hwtable)
 	 * host / bus / target / lun
 	 */
 	attr_path = udev_device_get_sysname(parent);
+	if (attr_path)
+		return PATHINFO_FAILED;
 	pp->sg_id.lun = 0;
 	if (sscanf(attr_path, "%i.%i.%x",
 		   &pp->sg_id.host_no,
--