From nobody Wed Oct 29 19:38:43 2025 X-Original-To: net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4cxcxH6Rzzz6FCl3 for ; Wed, 29 Oct 2025 19:38:43 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R12" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4cxcxH5tc6z3xLs for ; Wed, 29 Oct 2025 19:38:43 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1761766723; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pAIHHMex5OLCTO0kFn3q1/D+sPe10zBHq/jRJlHsLZg=; b=J9LJX4+ON35RRtgVal31HbypXfAW6R22kFJDulFPYUgeKNb88hH6ATym+4aQt9p8vUrieY VTA3UPJr6cXPaIWspESdG2UY0EmFTX67yKHjpRgxCdDaJgeCazJVdLFEx0/EmSY060H237 U/n2qjA2XG+4P+PZxN9Kl2VJqGdMY/a1PNRpJT3P8TqiNdeDJg8KXVeEVUPzFdq54A7jJP YN/XnS17VjfjGJz9ovWFR8UGyBDS2k1OvXV++8FF1Wjd9dr9Hha2vFXl7W1915Cqn3KnUa HqVarTctfbq2YrMGIWOflcAud0BHEZK9RxU+Lm+fVFlrU7tT7mMXPl3qLIX9/w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1761766723; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pAIHHMex5OLCTO0kFn3q1/D+sPe10zBHq/jRJlHsLZg=; b=ubhYlgYhhC4/tEG0kdyn9q4q5LuL2aFwzBw8X2H1Wg4dKsVGyP7Wh1AzZiqId2uRL04eS0 Yn0s4/gzpOee2GHy+6YzKz1k+jo6F79ooSgXwhPuuC6wUEXAbI/vcHzicPxEiSpQmQJ10z nZszqX7qiYiDlNEWoVSUzC5iFBq/QJvRHU7SZIckSGzBUAxEZLv2LIYzAFZGB69A4VYBzb u63IvkZbyzHS0Tsltk7zMKwuwW5eMeJSJcg/Ar8C1acBi/RUdbMv/8VS3LAXWzO0oRHWNO 1pcAQQ2gC8Ed3JQ8/TIuNEfT8dp5SIzsCxYDuQlfs73oHGOR5nPJuYe3QOmVEA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1761766723; a=rsa-sha256; cv=none; b=Cjr0QSSniYMJGE43lNbSa/J5njOqT021YPU7ODDzmaUOloB4dMSyzsB+HLmGQBBEFrGr+L AQ+t4gOsc+06ScAejQe8id8XlOGsVBpvp0GzHXk6qezPBNXXb/4dqtPmrPRMAHN2Vg0bSw ydYKLWWnDTpjYamlCKfYuQs6CIDmlUYhUdskq81qEd/GZ3fNpLpqwOn5W2/rqtVBieNr33 O4g6pUvTpIIUyY9FkGY1ScuZp+WcMIo296nraGSb/AHbOVp3FBoZ/LPU4H2FxnHYOf2Emn 1j234eN3KpDOt0Tf63Amc0hh4CurkM5TheNA+sWp3faMRNUZbWFXuafZQLOyaQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4cxcxH5C3kzqdw for ; Wed, 29 Oct 2025 19:38:43 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 59TJchXo039469 for ; Wed, 29 Oct 2025 19:38:43 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 59TJchat039468 for net@FreeBSD.org; Wed, 29 Oct 2025 19:38:43 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 284606] Kernel Panic with ipfw Date: Wed, 29 Oct 2025 19:38:43 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 14.2-RELEASE X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: vova@fbsd.ru X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D284606 --- Comment #10 from vova@fbsd.ru --- Seen exactly the same panic with net/amnezia-kmod instead of if_wg, it is b= ased on if_wg, svery possible that root case is the same. In may case - caused by following ipfw rule: ipfw add tcp-setmss 1380 tcp from any to any out xmit wg0 tcpflags syn I have a kernel cash dump: without debug it is very similar to this one: Fatal trap 12: page fault while in kernel mode ... --- trap 0xc, rip =3D 0xffffffff80cd9ac4, rsp =3D 0xfffffe0159ac9c20, rbp = =3D 0xfffffe0159ac9cb0 --- ip_tryforward() at ip_tryforward+0x274/frame 0xfffffe0159ac9cb0 ip_input() at ip_input+0x321/frame 0xfffffe0159ac9d10 netisr_dispatch_src() at netisr_dispatch_src+0x9f/frame 0xfffffe0159ac9d60 wg_deliver_in() at wg_deliver_in+0x3ad/frame 0xfffffe0159ac9e40 gtaskqueue_run_locked() at gtaskqueue_run_locked+0x14e/frame 0xfffffe0159ac= 9ec0 gtaskqueue_thread_loop() at gtaskqueue_thread_loop+0xc2/frame 0xfffffe0159ac9ef0 ... (kgdb) fr 8 #8 0xffffffff80cd9ac4 in ip_tryforward (m=3D0x0) at /usr/src/sys/netinet/ip_fastfwd.c:416 416 ip =3D mtod(m, struct ip *); (kgdb) p m $1 =3D (struct mbuf *) 0x0 (kgdb) fr 9 #9 0xffffffff80cdc251 in ip_input (m=3D0xfffff8020f13a500) at /usr/src/sys/netinet/ip_input.c:587 587 if ((m =3D ip_tryforward(m)) =3D=3D NULL) (kgdb) p m $2 =3D (struct mbuf *) 0xfffff8020f13a500 (kgdb) so, that means that pfil_mbuf_fwd() returned with m =3D=3D NULL and PFIL_PA= SS here: https://github.com/freebsd/freebsd-src/blob/main/sys/netinet/ip_fastfwd.c#L= 407 which is not expected then I have reproduced it with debug kernel - it died earlier, in firewall: Unread portion of the kernel message buffer: panic: ipfw_check_packet: m0 is NULL cpuid =3D 9 time =3D 1761568018 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0164266= 950 vpanic() at vpanic+0x161/frame 0xfffffe0164266a80 panic() at panic+0x43/frame 0xfffffe0164266ae0 ipfw_check_packet() at ipfw_check_packet+0x6ba/frame 0xfffffe0164266bd0 pfil_mbuf_out() at pfil_mbuf_out+0x58/frame 0xfffffe0164266c00 ip_tryforward() at ip_tryforward+0x2a5/frame 0xfffffe0164266ca0 ip_input() at ip_input+0x3af/frame 0xfffffe0164266d00 netisr_dispatch_src() at netisr_dispatch_src+0xb4/frame 0xfffffe0164266d60 wg_deliver_in() at wg_deliver_in+0x3ad/frame 0xfffffe0164266e40 gtaskqueue_run_locked() at gtaskqueue_run_locked+0x18e/frame 0xfffffe016426= 6ec0 gtaskqueue_thread_loop() at gtaskqueue_thread_loop+0xd3/frame 0xfffffe0164266ef0 fork_exit() at fork_exit+0x82/frame 0xfffffe0164266f30 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0164266f30 --- trap 0xdeadc0de, rip =3D 0xdeadc0dedeadc0de, rsp =3D 0xdeadc0dedeadc0de= , rbp =3D 0xdeadc0dedeadc0de --- (kgdb) bt #0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57 #1 doadump (textdump=3Dtextdump@entry=3D1) at /usr/src/sys/kern/kern_shutdown.c:405 #2 0xffffffff80b0d420 in kern_reboot (howto=3D260) at /usr/src/sys/kern/kern_shutdown.c:523 #3 0xffffffff80b0d939 in vpanic (fmt=3D0xffffffff835056aa "%s: m0 is NULL", ap=3Dap@entry=3D0xfffffe0164266ac0) at /usr/src/sys/kern/kern_shutdown.c:967 #4 0xffffffff80b0d6c3 in panic (fmt=3D) at /usr/src/sys/kern/kern_shutdown.c:891 #5 0xffffffff834e666a in ipfwlog_clone_create (ifc=3D, unit= =3D0, params=3D) at /usr/src/sys/netpfil/ipfw/ip_fw_bpf.c:134 #6 0xffffffff80c71d18 in pfil_mbuf_common (pch=3D, m=3D0x2, m@entry=3D0xfffffe0164266b98, ifp=3D0xfffffe0164266c38, flags=3D131072, inp=3D0xfffff80004f2e000, inp@entry=3D0x0) at /usr/src/sys/net/pfil.c:212 #7 pfil_mbuf_out (head=3D, m=3D0x2, m@entry=3D0xfffffe01642= 66c38, ifp=3D0xfffffe0164266c38, inp=3D0xfffff80004f2e000, inp@entry=3D0x0) at /usr/src/sys/net/pfil.c:233 #8 0xffffffff80cf1e75 in ip_tryforward (m=3D0x0) at /usr/src/sys/netinet/ip_fastfwd.c:409 #9 0xffffffff80cf4dff in ip_input (m=3D0xfffff8020c324700) at /usr/src/sys/netinet/ip_input.c:587 #10 0xffffffff80c6dea4 in netisr_dispatch_src (proto=3D1, source=3D0, m=3D0xfffff8020c324700) at /usr/src/sys/net/netisr.c:1152 #11 0xffffffff8352663d in wg_deliver_in () from /boot/modules/if_amn.ko #12 0xffffffff80b5c7ce in gtaskqueue_run_locked (queue=3D0x2, queue@entry=3D0xfffff8021de61900) at /usr/src/sys/kern/subr_gtaskqueue.c:369 #13 0xffffffff80b5c503 in gtaskqueue_thread_loop (arg=3Darg@entry=3D0xfffffe016409f0e0) at /usr/src/sys/kern/subr_gtaskqueue= .c:545 #14 0xffffffff80ac0022 in fork_exit (callout=3D0xffffffff80b5c430 , arg=3D0xfffffe016409f0e0, frame=3D0xfffffe0164266= f40) at /usr/src/sys/kern/kern_fork.c:1153 #15 #16 0xdeadc0dedeadc0de in ?? () Backtrace stopped: Cannot access memory at address 0xdeadc0dedeadc0de (kgdb) bt #0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57 #1 doadump (textdump=3Dtextdump@entry=3D1) at /usr/src/sys/kern/kern_shutdown.c:405 #2 0xffffffff80b0d420 in kern_reboot (howto=3D260) at /usr/src/sys/kern/kern_shutdown.c:523 #3 0xffffffff80b0d939 in vpanic (fmt=3D0xffffffff835056aa "%s: m0 is NULL", ap=3Dap@entry=3D0xfffffe0164266ac0) at /usr/src/sys/kern/kern_shutdown.c:967 #4 0xffffffff80b0d6c3 in panic (fmt=3D) at /usr/src/sys/kern/kern_shutdown.c:891 #5 0xffffffff834e666a in ipfwlog_clone_create (ifc=3D, unit= =3D0, params=3D) at /usr/src/sys/netpfil/ipfw/ip_fw_bpf.c:134 #6 0xffffffff80c71d18 in pfil_mbuf_common (pch=3D, m=3D0x2, m@entry=3D0xfffffe0164266b98, ifp=3D0xfffffe0164266c38, flags=3D131072, inp=3D0xfffff80004f2e000, inp@entry=3D0x0) at /usr/src/sys/net/pfil.c:212 #7 pfil_mbuf_out (head=3D, m=3D0x2, m@entry=3D0xfffffe01642= 66c38, ifp=3D0xfffffe0164266c38, inp=3D0xfffff80004f2e000, inp@entry=3D0x0) at /usr/src/sys/net/pfil.c:233 #8 0xffffffff80cf1e75 in ip_tryforward (m=3D0x0) at /usr/src/sys/netinet/ip_fastfwd.c:409 #9 0xffffffff80cf4dff in ip_input (m=3D0xfffff8020c324700) at /usr/src/sys/netinet/ip_input.c:587 #10 0xffffffff80c6dea4 in netisr_dispatch_src (proto=3D1, source=3D0, m=3D0xfffff8020c324700) at /usr/src/sys/net/netisr.c:1152 #11 0xffffffff8352663d in wg_deliver_in () from /boot/modules/if_amn.ko #12 0xffffffff80b5c7ce in gtaskqueue_run_locked (queue=3D0x2, queue@entry=3D0xfffff8021de61900) at /usr/src/sys/kern/subr_gtaskqueue.c:369 #13 0xffffffff80b5c503 in gtaskqueue_thread_loop (arg=3Darg@entry=3D0xfffffe016409f0e0) at /usr/src/sys/kern/subr_gtaskqueue= .c:545 #14 0xffffffff80ac0022 in fork_exit (callout=3D0xffffffff80b5c430 , arg=3D0xfffffe016409f0e0, frame=3D0xfffffe0164266= f40) at /usr/src/sys/kern/kern_fork.c:1153 #15 #16 0xdeadc0dedeadc0de in ?? () Backtrace stopped: Cannot access memory at address 0xdeadc0dedeadc0de (kgdb) fr 9 #9 0xffffffff80cf4dff in ip_input (m=3D0xfffff8020c324700) at /usr/src/sys/netinet/ip_input.c:587 587 if ((m =3D ip_tryforward(m)) =3D=3D NULL) (kgdb) p m $1 =3D (struct mbuf *) 0xfffff8020c324700 (kgdb) p *m $2 =3D {{m_next =3D 0xdeadc0dedeadc0de, m_slist =3D {sle_next =3D 0xdeadc0d= edeadc0de}, m_stailq =3D {stqe_next =3D 0xdeadc0dedeadc0de}}, {m_nextpkt =3D 0xdeadc0de= deadc0de, m_slistpkt =3D {sle_next =3D 0xdeadc0dedeadc0de}, m_stailqpkt =3D {stqe_nex= t =3D 0xdeadc0dedeadc0de}}, m_data =3D 0xdeadc0dedeadc0de , m_len =3D -559038242, m_type =3D 222, m_fla= gs =3D 14593472, {{{m_pkthdr =3D {{ snd_tag =3D 0xdeadc0dedeadc0de, rcvif =3D 0xdeadc0dedeadc0de, {= rcvidx =3D 49374, rcvgen =3D 57005}}, {leaf_rcvif =3D 0xdeadc0dedeadc0de, {leaf_rcvidx= =3D 49374, leaf_rcvgen =3D 57005}}, tags =3D {slh_first =3D 0xdeadc0dedeadc0de}= , len =3D -559038242, flowid =3D 3735929054, csum_flags =3D 3735929054, fibnum =3D 49= 374, numa_domain =3D 173 '\255', rsstype =3D 222 '\336', {rcv_tstmp =3D 16045693110842147038, {l2hlen =3D 222 '\336', l3hlen =3D 192 '\300', l4hlen =3D 173 '\255', l5hlen =3D 222 = '\336', inner_l2hlen =3D 222 '\336', inner_l3hlen =3D 192 '\300', inner_l4hlen =3D = 173 '\255', inner_l5hlen =3D 222 '\336'}}, PH_per =3D {eight =3D "\336\300\255\336\336\300\255", , sixteen =3D {49= 374, 57005, 49374, 57005}, thirtytwo =3D {3735929054, 3735929054}, sixtyfour =3D {16045693110842147038}, unintptr =3D {16045693110842147038}, ptr =3D 0xdeadc0dedeadc0de}, {PH_loc =3D {eight =3D "\336\300\255\336\336\300\255", , sixteen =3D {49= 374, 57005, 49374, 57005}, thirtytwo =3D {3735929054, 3735929054}, sixtyfour =3D {16045693110842147038}, unintptr =3D {16045693110842147038}, ptr =3D 0xdeadc0dedeadc0de}, memlen =3D 3735929054}}, {m_epg_npgs =3D 222 '\336', m_epg_nrdy =3D 192 '\300', m_epg_hdrlen =3D 173 '\255', m_epg_trllen =3D 22= 2 '\336', m_epg_1st_off =3D 49374, m_epg_last_len =3D 57005, m_epg_flags = =3D 222 '\336', m_epg_record_type =3D 192 '\300', __spare =3D "\255", , m_epg_enc_cnt =3D -559038242, m_epg_tls =3D 0xdeadc0dedeadc0de, m_ep= g_so =3D 0xdeadc0dedeadc0de, m_epg_seqno =3D 16045693110842147038, m_epg_stailq =3D {stqe_next =3D 0xdeadc0dedeadc0de}}}, {m_ext =3D {{ext_count =3D 3735929054= , ext_cnt =3D 0xdeadc0dedeadc0de}, ext_size =3D 3735929054, ext_type =3D 222, ext_flags =3D 14593472, {{ext_buf =3D 0xdeadc0dedeadc0de , ext_arg2 =3D 0xdeadc0dedeadc0de}, {extpg_pa =3D {16045693110842147038, 16045693110842147038, 16045693110842147038, 16045693110842147038, 16045693110842147038}, extpg_trail =3D "\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\2= 55\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\= 300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336= \336\300\255\336\336\300\255", , extpg_hdr =3D "\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\2= 55\336\336\300\255"}}, ext_free =3D 0xdeadc0dedeadc0de, ext_arg1 =3D 0xdeadc0dedeadc0de}, m_pktdat =3D 0xfffff8020c324760 "\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\2= 55\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\= 300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336= \336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\25= 5\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\3= 00\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\= 336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255= \336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\30= 0\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\3= 36\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\= 336\336\300\255\336\336\300\255\336\336\300\255", ...}}, m_dat =3D 0xfffff8020c324720 "\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\2= 55\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\= 300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336= \336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\25= 5\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\3= 00\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\= 336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255= \336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\30= 0\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\3= 36\300\255\336\336\300\255\336\336\300\255\336\336\300\255\336\336\300\255\= 336\336\300\255\336\336\300\255\336\336\300\255", ...}} (kgdb) fr 8 #8 0xffffffff80cf1e75 in ip_tryforward (m=3D0x0) at /usr/src/sys/netinet/ip_fastfwd.c:409 warning: Source file is more recent than executable. 409 if (pfil_mbuf_out(V_inet_pfil_head, &m, nh->nh_ifp, (kgdb) p m $3 =3D (struct mbuf *) 0x0 So, sounds like if firewall updates packet something get broken. Additional considiration, on other system I have pf firewall updating MSS a= nd it does not breaks. But I can't say for sure, as far as I have no exact reproduction, it just fires few times a day with some wg clients. --=20 You are receiving this mail because: You are the assignee for the bug.=