Author: Felix Lechner <felix.lechner@lease-up.com>
Description: Exit gracefully when md device not found (Closes: #970329).

diff -Naurp mdadm.orig/Monitor.c mdadm/Monitor.c
--- mdadm.orig/Monitor.c
+++ mdadm/Monitor.c
@@ -554,8 +554,14 @@ static int check_array(struct state *st,
 	if (fd < 0)
 		goto disappeared;
 
-	if (st->devnm[0] == 0)
-		snprintf(st->devnm, MD_NAME_MAX, "%s", fd2devnm(fd));
+	if (st->devnm[0] == 0) {
+		char *found = fd2devnm(fd);
+		if (!found) {
+			alert(EVENT_DEVICE_DISAPPEARED, NULL, 0, dev, NULL);
+			goto out;
+		}
+		snprintf(st->devnm, MD_NAME_MAX, "%s", found);
+	}
 
 	for (mse2 = mdstat; mse2; mse2 = mse2->next)
 		if (strcmp(mse2->devnm, st->devnm) == 0) {