tree: avoid crash on unset subsystem in nvme_ctrl_get_host{nqn,id}

Signed-off-by: Hannes Reinecke <hare@suse.de>

diff --git a/src/nvme/tree.c b/src/nvme/tree.c
index 2c8192fd07df76143ec9e561c0f6c9ba9dbcda4e..6bcaf035eccb82361b9373791c04ec7ff091b9a8 100644 (file)
--- a/src/nvme/tree.c
+++ b/src/nvme/tree.c
@@ -652,14 +652,14 @@ const char *nvme_ctrl_get_host_iface(nvme_ctrl_t c)
 
 const char *nvme_ctrl_get_hostnqn(nvme_ctrl_t c)
 {
-       if (!c->s)
+       if (!c->s || !c->s->h)
                return default_host->hostnqn;
        return c->s->h->hostnqn;
 }
 
 const char *nvme_ctrl_get_hostid(nvme_ctrl_t c)
 {
-       if (!c->s)
+       if (!c->s || !c->s->h)
                return default_host->hostid;
        return c->s->h->hostid;
 }