Date: Mon, 03 Aug 2026 21:07:38 +0000 From: Mark Johnston <markj@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 1c0d2f0b1a98 - main - ip_mroute: Don't assume that a multicast router is running Message-ID: <6a71031a.38726.67a84861@gitrepo.freebsd.org>
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The branch main has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=1c0d2f0b1a98526e4f1f5a051ce6904b4c3164e1 commit 1c0d2f0b1a98526e4f1f5a051ce6904b4c3164e1 Author: Mark Johnston <markj@FreeBSD.org> AuthorDate: 2026-08-03 20:44:14 +0000 Commit: Mark Johnston <markj@FreeBSD.org> CommitDate: 2026-08-03 20:50:14 +0000 ip_mroute: Don't assume that a multicast router is running The SIOCGETSGCNT handler may be invoked in this scenario, and if no router has initialized the lookup table, we'll have mfct->mfchashtbl == NULL. PR: 297148 Reported by: Robert Morris MFC after: 1 week Sponsored by: The FreeBSD Foundation --- sys/netinet/ip_mroute.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/netinet/ip_mroute.c b/sys/netinet/ip_mroute.c index 14bd458b74f3..d18a9865f9bc 100644 --- a/sys/netinet/ip_mroute.c +++ b/sys/netinet/ip_mroute.c @@ -383,6 +383,8 @@ mfc_find(const struct mfctable *mfct, const struct in_addr *o, MRW_LOCK_ASSERT(); + if (mfct->mfchashtbl == NULL) + return (NULL); LIST_FOREACH(rt, &mfct->mfchashtbl[MFCHASH(*o, *g)], mfc_hash) { if (in_hosteq(rt->mfc_origin, *o) && in_hosteq(rt->mfc_mcastgrp, *g) &&home | help
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