LU-17235 o2iblnd: adding alias ib interface causes crash

[fs/lustre-release.git] / lnet / klnds / o2iblnd / o2iblnd.c

diff --git a/lnet/klnds/o2iblnd/o2iblnd.c b/lnet/klnds/o2iblnd/o2iblnd.c
index 54d4691..4f321b6 100644 (file)
--- a/lnet/klnds/o2iblnd/o2iblnd.c
+++ b/lnet/klnds/o2iblnd/o2iblnd.c
@@ -3719,9 +3719,10 @@ kiblnd_startup(struct lnet_ni *ni)
 
        rcu_read_lock();
        netdev = dev_get_by_name_rcu(ni->ni_net_ns, net->ibn_dev->ibd_ifname);
-       if (((netdev->reg_state == NETREG_UNREGISTERING) ||
-            (netdev->operstate != IF_OPER_UP)) ||
-           (lnet_get_link_status(netdev) == 0)) {
+       if (netdev &&
+           ((netdev->reg_state == NETREG_UNREGISTERING) ||
+            (netdev->operstate != IF_OPER_UP) ||
+           (lnet_get_link_status(netdev) == 0))) {
                kiblnd_set_ni_fatal_on(ibdev->ibd_hdev, 1);
        }
        rcu_read_unlock();