diff options
| author | Angelos D. Keromytis <angelos@cvs.openbsd.org> | 2001-05-22 20:22:23 +0000 |
|---|---|---|
| committer | Angelos D. Keromytis <angelos@cvs.openbsd.org> | 2001-05-22 20:22:23 +0000 |
| commit | 948f047f15fac8b9a1e84da54514fabedb7b13e8 (patch) | |
| tree | db02a81512bbacb6429a8aec229f3a68feb956e0 /sys/kern | |
| parent | 44ab1064e420ce5c2bdbb1a70096549c2a0066e0 (diff) | |
Do some ideally unneeded checking of tags.
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/uipc_mbuf2.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sys/kern/uipc_mbuf2.c b/sys/kern/uipc_mbuf2.c index 5e2df6d9713..b23d22598ab 100644 --- a/sys/kern/uipc_mbuf2.c +++ b/sys/kern/uipc_mbuf2.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uipc_mbuf2.c,v 1.8 2001/05/20 08:31:47 angelos Exp $ */ +/* $OpenBSD: uipc_mbuf2.c,v 1.9 2001/05/22 20:22:22 angelos Exp $ */ /* $KAME: uipc_mbuf2.c,v 1.29 2001/02/14 13:42:10 itojun Exp $ */ /* $NetBSD: uipc_mbuf.c,v 1.40 1999/04/01 00:23:25 thorpej Exp $ */ @@ -339,6 +339,15 @@ m_tag_delete_chain(m, t) { struct m_tag *p; + /* Be a bit paranoid */ + if (m->m_pkthdr.tags.tqh_last == NULL) { +#ifdef DIAGNOSTIC + printf("m_tag_delete_chain: uninitialized tags on mbuf %p\n", + m); +#endif + TAILQ_INIT(&m->m_pkthdr.tags); + return; + } while ((p = TAILQ_LAST(&m->m_pkthdr.tags, packet_tags)) != NULL) { m_tag_delete(m, p); if (t != NULL && p == t) |