From 51f14fa11120998e2cd79c2bfcab734423d2f0ee Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 21 May 2019 18:00:09 +0200
Subject: [PATCH] blockdev: filter out invalid block devices early

---
 src/basic/blockdev-util.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/basic/blockdev-util.c b/src/basic/blockdev-util.c
index 5e7dc06..6bbb723 100644
--- a/src/basic/blockdev-util.c
+++ b/src/basic/blockdev-util.c
@@ -21,6 +21,9 @@ int block_get_whole_disk(dev_t d, dev_t *ret) {
 
         assert(ret);
 
+        if (major(d) == 0)
+                return -ENODEV;
+
         /* If it has a queue this is good enough for us */
         xsprintf_sys_block_path(p, "/queue", d);
         if (access(p, F_OK) >= 0) {
-- 
2.7.4