Date: Tue, 7 Sep 2021 21:12:55 GMT From: "Alexander V. Chernikov" <melifaro@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 4e97cbba1c79 - stable/13 - lltable: fix crash introduced in c541bd368f86. Message-ID: <202109072112.187LCtmw024080@gitrepo.freebsd.org>
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The branch stable/13 has been updated by melifaro: URL: https://cgit.FreeBSD.org/src/commit/?id=4e97cbba1c79fc7c2a5ceeccefbea0f71887e915 commit 4e97cbba1c79fc7c2a5ceeccefbea0f71887e915 Author: Alexander V. Chernikov <melifaro@FreeBSD.org> AuthorDate: 2021-08-22 08:47:49 +0000 Commit: Alexander V. Chernikov <melifaro@FreeBSD.org> CommitDate: 2021-09-07 21:02:58 +0000 lltable: fix crash introduced in c541bd368f86. Reported by: cy (cherry picked from commit f8c1b1a9296696f70ac209612a00ae0722d07ed9) --- sys/netinet6/in6.c | 7 ++++--- sys/netinet6/nd6_rtr.c | 5 +++-- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c index 142a05ded2b6..d54aba58edb6 100644 --- a/sys/netinet6/in6.c +++ b/sys/netinet6/in6.c @@ -2323,6 +2323,7 @@ in6_lltable_lookup(struct lltable *llt, u_int flags, const struct sockaddr *l3addr) { const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)l3addr; + int family = flags >> 16; struct llentry *lle; IF_AFDATA_LOCK_ASSERT(llt->llt_ifp); @@ -2333,13 +2334,13 @@ in6_lltable_lookup(struct lltable *llt, u_int flags, ("wrong lle request flags: %#x", flags)); lle = in6_lltable_find_dst(llt, &sin6->sin6_addr); - if (lle == NULL) - return (NULL); - int family = flags >> 16; if (__predict_false(family != AF_INET6)) lle = llentry_lookup_family(lle, family); + if (lle == NULL) + return (NULL); + if (flags & LLE_UNLOCKED) return (lle); diff --git a/sys/netinet6/nd6_rtr.c b/sys/netinet6/nd6_rtr.c index 2960b6cad951..cec9fccd63c4 100644 --- a/sys/netinet6/nd6_rtr.c +++ b/sys/netinet6/nd6_rtr.c @@ -972,7 +972,7 @@ defrouter_select_fib(int fibnum) TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry) { NET_EPOCH_ENTER(et); if (selected_dr == NULL && dr->ifp->if_fib == fibnum && - (ln = nd6_lookup(&dr->rtaddr, 0, dr->ifp)) && + (ln = nd6_lookup(&dr->rtaddr, LLE_SF(AF_INET6, 0), dr->ifp)) && ND6_IS_LLINFO_PROBREACH(ln)) { selected_dr = dr; defrouter_ref(selected_dr); @@ -1814,7 +1814,8 @@ find_pfxlist_reachable_router(struct nd_prefix *pr) NET_EPOCH_ENTER(et); LIST_FOREACH(pfxrtr, &pr->ndpr_advrtrs, pfr_entry) { - ln = nd6_lookup(&pfxrtr->router->rtaddr, 0, pfxrtr->router->ifp); + ln = nd6_lookup(&pfxrtr->router->rtaddr, LLE_SF(AF_INET6, 0), + pfxrtr->router->ifp); if (ln == NULL) continue; canreach = ND6_IS_LLINFO_PROBREACH(ln);
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