The branch main has been updated by kp: URL: https://cgit.FreeBSD.org/src/commit/?id=fa03d37432caf17d56a931a9e6f5d9b06f102c5b
commit fa03d37432caf17d56a931a9e6f5d9b06f102c5b Author: Kristof Provost <[email protected]> AuthorDate: 2023-08-29 09:33:17 +0000 Commit: Kristof Provost <[email protected]> CommitDate: 2023-08-31 10:16:20 +0000 mcast: fix memory leak in imf_purge() The IGMP code buffers packets in the imf_inm->inm_scq mbufq, but does not clear this queue when struct in_mfilter is freed by imf_purge(). This can cause memory leaks if IGMPv3 is used. Purge the mbufq on imf_purge(). MFC after: 1 week Sponsored by: Rubicon Communications, LLC ("Netgate") Differential Revision: https://reviews.freebsd.org/D41629 --- sys/netinet/in_mcast.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/netinet/in_mcast.c b/sys/netinet/in_mcast.c index 827b8f96b07e..362e3f25115c 100644 --- a/sys/netinet/in_mcast.c +++ b/sys/netinet/in_mcast.c @@ -915,6 +915,8 @@ imf_purge(struct in_mfilter *imf) imf->imf_st[0] = imf->imf_st[1] = MCAST_UNDEFINED; KASSERT(RB_EMPTY(&imf->imf_sources), ("%s: imf_sources not empty", __func__)); + if (imf->imf_inm != NULL) + mbufq_drain(&imf->imf_inm->inm_scq); } /*
