From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Martin Wilck Date: Tue, 2 Feb 2021 15:18:33 +0100 Subject: [PATCH] libmultipath: check return value of udev_device_get_devnum() udev_device_get_devnum() may fail, in which case it returns makedev(0, 0). Reviewed-by: Benjamin Marzinski Signed-off-by: Benjamin Marzinski --- libmultipath/discovery.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c index 921025d4..15cf6413 100644 --- a/libmultipath/discovery.c +++ b/libmultipath/discovery.c @@ -1659,6 +1659,9 @@ common_sysfs_pathinfo (struct path * pp) return PATHINFO_FAILED; } devt = udev_device_get_devnum(pp->udev); + if (major(devt) == 0 && minor(devt) == 0) + return PATHINFO_FAILED; + snprintf(pp->dev_t, BLK_DEV_SIZE, "%d:%d", major(devt), minor(devt)); condlog(4, "%s: dev_t = %s", pp->dev, pp->dev_t); -- 2.17.2