svn commit: r313943 - head/sbin/mdconfig
Edward Tomasz Napierala
trasz at FreeBSD.org
Sun Feb 19 16:09:00 UTC 2017
Author: trasz
Date: Sun Feb 19 16:08:58 2017
New Revision: 313943
URL: https://svnweb.freebsd.org/changeset/base/313943
Log:
Make mdconfig(8) not segfault when the kernel returns garbage data.
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
Modified:
head/sbin/mdconfig/mdconfig.c
Modified: head/sbin/mdconfig/mdconfig.c
==============================================================================
--- head/sbin/mdconfig/mdconfig.c Sun Feb 19 14:53:59 2017 (r313942)
+++ head/sbin/mdconfig/mdconfig.c Sun Feb 19 16:08:58 2017 (r313943)
@@ -452,8 +452,8 @@ md_list(const char *units, int opt, cons
}
gc = &pp->lg_config;
type = geom_config_get(gc, "type");
- if (strcmp(type, "vnode") == 0 ||
- strcmp(type, "preload") == 0) {
+ if (type != NULL && (strcmp(type, "vnode") == 0 ||
+ strcmp(type, "preload") == 0)) {
file = geom_config_get(gc, "file");
if (fflag != NULL &&
strcmp(fflag, file) != 0)
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