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Diffstat (limited to 'net/smc/smc_pnet.c')
-rw-r--r--net/smc/smc_pnet.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c
index 25fb2fd18..21b8bf23e 100644
--- a/net/smc/smc_pnet.c
+++ b/net/smc/smc_pnet.c
@@ -802,6 +802,16 @@ static void smc_pnet_create_pnetids_list(struct net *net)
u8 ndev_pnetid[SMC_MAX_PNETID_LEN];
struct net_device *dev;
+ /* Newly created netns do not have devices.
+ * Do not even acquire rtnl.
+ */
+ if (list_empty(&net->dev_base_head))
+ return;
+
+ /* Note: This might not be needed, because smc_pnet_netdev_event()
+ * is also calling smc_pnet_add_base_pnetid() when handling
+ * NETDEV_UP event.
+ */
rtnl_lock();
for_each_netdev(net, dev)
smc_pnet_add_base_pnetid(net, dev, ndev_pnetid);