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CID-3667: check if 'mtag != NULL' before dereferencing it

This commit is contained in:
alc 2006-12-25 23:58:36 +00:00
parent 0fd99769e3
commit 9254207181
1 changed files with 3 additions and 2 deletions
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5
sys/dev/pci/if_nfe.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_nfe.c,v 1.7 2006/11/16 01:33:09 christos Exp $ */
/* $NetBSD: if_nfe.c,v 1.8 2006/12/25 23:58:36 alc Exp $ */
/* $OpenBSD: if_nfe.c,v 1.52 2006/03/02 09:04:00 jsg Exp $ */
/*-
@ -21,7 +21,7 @@
/* Driver for NVIDIA nForce MCP Fast Ethernet and Gigabit Ethernet */
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_nfe.c,v 1.7 2006/11/16 01:33:09 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_nfe.c,v 1.8 2006/12/25 23:58:36 alc Exp $");
#include "opt_inet.h"
#include "bpfilter.h"
@ -950,6 +950,7 @@ nfe_encap(struct nfe_softc *sc, struct mbuf *m0)
/* setup h/w VLAN tagging */
if (sc->sc_ethercom.ec_nvlans) {
mtag = m_tag_find(m0, PACKET_TAG_VLAN, NULL);
KASSERT(mtag != NULL);
vtag = NFE_TX_VTAG | VLAN_TAG_VALUE(mtag);
}
#endif