Merge pull request #30052 from dtardon/udev-fixes

Two small udev fixes

src/udev/udev-manager.c

@@ -1289,7 +1289,7 @@ int manager_main(Manager *manager) {
 
         r = udev_ctrl_start(manager->ctrl, on_ctrl_msg, manager);
         if (r < 0)
-                return log_error_errno(r, "Failed to start device monitor: %m");
+                return log_error_errno(r, "Failed to start udev control: %m");
 
         /* This needs to be after the inotify and uevent handling, to make sure
          * that the ping is send back after fully processing the pending uevents

test/units/testsuite-17.10.sh

@@ -25,7 +25,7 @@ netdev=dummy17.10
 ip link add $netdev type dummy
 
 blk="$(mktemp)"
-dd if=/dev/null of="$blk" bs=1M count=1
+dd if=/dev/zero of="$blk" bs=1M count=1
 loopdev="$(losetup --show -f "$blk")"
 
 udevadm -h