Date: Thu, 22 Jul 2021 12:18:59 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 257302] net/syncthing: Panic in in6_getmulti at /usr/src/sys/netinet6/in6_mcast.c:451 Message-ID: <bug-257302-7501-RySx0Fzjm6@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-257302-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-257302-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D257302 Andrey V. Elsukov <ae@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ae@FreeBSD.org --- Comment #5 from Andrey V. Elsukov <ae@FreeBSD.org> --- (In reply to Alex Vasylenko from comment #0) >Jul 20 13:43:02 foam kernel: fault virtual address =3D 0x28 >Jul 20 13:43:02 foam kernel: fault code =3D supervisor read data, = page not present >#9 0xffffffff80e04a0e in in6_getmulti (ifp=3D<optimized out>, group=3D0xf= ffffe005c3cf118, pinm=3D<optimized out>) at /usr/src/sys/netinet6/in6_mcast= .c:451 It is NULL pointer dereference in the line: inm->in6m_mli =3D MLD_IFINFO(ifp); MLD_IFINFO() macro tries to dereference if_afdata[AF_INET6]->mld_info. 0x28 corresponds to mld_ifinfo field: (kgdb) p/x offsetof(struct in6_ifextra, mld_ifinfo) $1 =3D 0x28 ipfw0 interface does not have properly initialized if_afdata since IFT_PFLOG interfaces do not support IPv6 (look at in6_domifattach()). Thus I think we need to add somewhere the check that adapter doesn't support IPv6 multicasts. --=20 You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.=
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