X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Fdp_sysfs_if.c;h=f564e9808f26650beeb068392e49137f7454a7f1;hb=a39edbd4a409ad14b79c2205e340c07185785b92;hp=5b695cfc003a582a3a86359beebbecb45ca3a481;hpb=850b6b3b9f8c38b42e315c2c07d232a33b82da3e;p=openvswitch

diff --git a/datapath/dp_sysfs_if.c b/datapath/dp_sysfs_if.c
index 5b695cfc..f564e980 100644
--- a/datapath/dp_sysfs_if.c
+++ b/datapath/dp_sysfs_if.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2007-2011 Nicira Networks.
+ * Copyright (c) 2007-2012 Nicira Networks.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
@@ -217,6 +217,14 @@ int ovs_dp_sysfs_add_if(struct vport *p)
 	if (!p->ops->get_kobj)
 		return -ENOENT;
 
+#ifdef CONFIG_NET_NS
+	/* Due to bug in 2.6.32 kernel, sysfs_create_group() could panic
+	 * in other namespace than init_net. Following check is to avoid it. */
+
+	if (!p->kobj.sd)
+		return -ENOENT;
+#endif
+
 	err = kobject_add(&p->kobj, p->ops->get_kobj(p),
 			  SYSFS_BRIDGE_PORT_ATTR);
 	if (err)