[dm-devel] [PATCH v2 12/17] libmutipath: don't use malformed uevents

[Benjamin Marzinski]

A uevent that doesn't include the ACTION and DEVPATH fields is
malformed. It should be ignored, instead of used with those fields being
NULL.

Signed-off-by: Benjamin Marzinski <bmarzins at redhat.com>
---
 libmultipath/uevent.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libmultipath/uevent.c b/libmultipath/uevent.c
index fd8ca35..5f910e6 100644
--- a/libmultipath/uevent.c
+++ b/libmultipath/uevent.c
@@ -729,6 +729,12 @@ struct uevent *uevent_from_udev_device(struct udev_device *dev)
 		if (i == HOTPLUG_NUM_ENVP - 1)
 			break;
 	}
+	if (!uev->devpath || ! uev->action) {
+		udev_device_unref(dev);
+		condlog(1, "uevent missing necessary fields");
+		FREE(uev);
+		return NULL;
+	}
 	uev->udev = dev;
 	uev->envp[i] = NULL;
 
-- 
2.7.4