svn commit: r357263 - head/sys/net

[Alexander V. Chernikov]

Author: melifaro
Date: Wed Jan 29 18:41:35 2020
New Revision: 357263
URL: https://svnweb.freebsd.org/changeset/base/357263

Log:
  Plug parent iface refcount leak on <ifname>.X vlan creation.
  
  PR:		kern/242270
  Submitted by:	Andrew Boyer <aboyer at pensando.io>
  MFC after:	2 weeks

Modified:
  head/sys/net/if_vlan.c

Modified: head/sys/net/if_vlan.c
==============================================================================
--- head/sys/net/if_vlan.c	Wed Jan 29 18:13:44 2020	(r357262)
+++ head/sys/net/if_vlan.c	Wed Jan 29 18:41:35 2020	(r357263)
@@ -963,10 +963,14 @@ vlan_clone_match_ethervid(const char *name, int *vidp)
 static int
 vlan_clone_match(struct if_clone *ifc, const char *name)
 {
+	struct ifnet *ifp;
 	const char *cp;
 
-	if (vlan_clone_match_ethervid(name, NULL) != NULL)
+	ifp = vlan_clone_match_ethervid(name, NULL);
+	if (ifp != NULL) {
+		if_rele(ifp);
 		return (1);
+	}
 
 	if (strncmp(vlanname, name, strlen(vlanname)) != 0)
 		return (0);