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-rw-r--r--sys/geom/virstor/g_virstor.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/geom/virstor/g_virstor.c b/sys/geom/virstor/g_virstor.c
index dfbe5c6..1de3d5a 100644
--- a/sys/geom/virstor/g_virstor.c
+++ b/sys/geom/virstor/g_virstor.c
@@ -225,6 +225,11 @@ virstor_ctl_stop(struct gctl_req *req, struct g_class *cp)
sprintf(param, "arg%d", i);
name = gctl_get_asciiparam(req, param);
+ if (name == NULL) {
+ gctl_error(req, "No 'arg%d' argument", i);
+ g_topology_unlock();
+ return;
+ }
sc = virstor_find_geom(cp, name);
LOG_MSG(LVL_INFO, "Stopping %s by the userland command",
sc->geom->name);
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