cov: validate altdev list is not empty

diff --git a/lib/cache/lvmcache.c b/lib/cache/lvmcache.c
index e965903ef354ee514ee261b5b8c3f1069f82ac2c..b96ccd58a877a60e49445b35a3d04558add2ca83 100644 (file)
--- a/lib/cache/lvmcache.c
+++ b/lib/cache/lvmcache.c
@@ -1052,6 +1052,8 @@ next:
                        log_debug_cache("PV %s with duplicates unselected using %s.",
                                        pvid, dev_name(devl->dev));
                        goto next;
+               } else if (dm_list_empty(&altdevs)) {
+                       goto next;
                } else {
                        devl = dm_list_item(dm_list_first(&altdevs), struct device_list);
                        dev1 = devl->dev;