Author: ae
Date: Fri Mar 6 05:50:39 2015
New Revision: 279684
URL: https://svnweb.freebsd.org/changeset/base/279684
Log:
tcp6_ctlinput() doesn't pass MTU value to in6_pcbnotify().
Check cmdarg isn't NULL before dereference, this check was in the
ip6_notify_pmtu() before r279588.
Reported by: Florian Smeets
MFC after: 1 week
Modified:
head/sys/netinet6/in6_pcb.c
Modified: head/sys/netinet6/in6_pcb.c
==============================================================================
--- head/sys/netinet6/in6_pcb.c Fri Mar 6 02:05:45 2015 (r279683)
+++ head/sys/netinet6/in6_pcb.c Fri Mar 6 05:50:39 2015 (r279684)
@@ -645,7 +645,7 @@ in6_pcbnotify(struct inpcbinfo *pcbinfo,
* know the value, notify.
* XXX: should we avoid to notify the value to TCP sockets?
*/
- if (cmd == PRC_MSGSIZE)
+ if (cmd == PRC_MSGSIZE && cmdarg != NULL)
ip6_notify_pmtu(inp, (struct sockaddr_in6 *)dst,
*(u_int32_t *)cmdarg);
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