Date: Sat, 1 Oct 2016 01:30:35 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r306548 - head/sys/netinet6 Message-ID: <201610010130.u911UZbn035642@repo.freebsd.org>
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Author: markj Date: Sat Oct 1 01:30:34 2016 New Revision: 306548 URL: https://svnweb.freebsd.org/changeset/base/306548 Log: nd6_dad_timer(): don't assert that the address is tentative. It appears that this assertion can be tripped in some cases when multiple interfaces are on the same link. Until this is resolved, revert a part of r306305 and simply log a message if the DAD timer fires on a non-tentative address. Reported by: jhb X-MFC With: r306305 Modified: head/sys/netinet6/nd6_nbr.c Modified: head/sys/netinet6/nd6_nbr.c ============================================================================== --- head/sys/netinet6/nd6_nbr.c Sat Oct 1 01:24:24 2016 (r306547) +++ head/sys/netinet6/nd6_nbr.c Sat Oct 1 01:30:34 2016 (r306548) @@ -1316,8 +1316,6 @@ nd6_dad_timer(struct dadq *dp) char ip6buf[INET6_ADDRSTRLEN]; KASSERT(ia != NULL, ("DAD entry %p with no address", dp)); - KASSERT((ia->ia6_flags & IN6_IFF_TENTATIVE) != 0, - ("DAD entry %p for non-tentative address", dp)); if (ND_IFINFO(ifp)->flags & ND6_IFF_IFDISABLED) { /* Do not need DAD for ifdisabled interface. */ @@ -1332,6 +1330,13 @@ nd6_dad_timer(struct dadq *dp) ifa->ifa_ifp ? if_name(ifa->ifa_ifp) : "???"); goto err; } + if ((ia->ia6_flags & IN6_IFF_TENTATIVE) == 0) { + log(LOG_ERR, "nd6_dad_timer: called with non-tentative address " + "%s(%s)\n", + ip6_sprintf(ip6buf, &ia->ia_addr.sin6_addr), + ifa->ifa_ifp ? if_name(ifa->ifa_ifp) : "???"); + goto err; + } /* Stop DAD if the interface is down even after dad_maxtry attempts. */ if ((dp->dad_ns_tcount > V_dad_maxtry) &&
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