From owner-freebsd-pf@freebsd.org Thu Sep 1 04:27:15 2016 Return-Path: Delivered-To: freebsd-pf@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1B69CBCABA0 for ; Thu, 1 Sep 2016 04:27:15 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id D46AD3F3 for ; Thu, 1 Sep 2016 04:27:14 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u814RDEq014043 for ; Thu, 1 Sep 2016 04:27:14 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-pf@FreeBSD.org Subject: [Bug 185633] [pf] scrubbing bug in transparent mode bug with bigger than MTU UDP packet Date: Thu, 01 Sep 2016 04:27:14 +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: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: olivier@freebsd.org X-Bugzilla-Status: In Progress X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: freebsd-pf@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-pf@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "Technical discussion and general questions about packet filter \(pf\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Sep 2016 04:27:15 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D185633 --- Comment #10 from Olivier Cochard --- I've rebuild a kernel with all DEBUG enabled. And generating only first one fragmented ICMP (ping -c 1 -s 1500 10.0.0.3) generate this kassert panic: [root@router]~# panic: vtnet_txq_encap: no mbuf packet header! cpuid =3D 0 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00003ab= 530 vpanic() at vpanic+0x182/frame 0xfffffe00003ab5b0 kassert_panic() at kassert_panic+0x126/frame 0xfffffe00003ab620 vtnet_txq_mq_start_locked() at vtnet_txq_mq_start_locked+0x635/frame 0xfffffe00003ab6e0 vtnet_txq_mq_start() at vtnet_txq_mq_start+0x6f/frame 0xfffffe00003ab720 bridge_enqueue() at bridge_enqueue+0x9a/frame 0xfffffe00003ab760 bridge_forward() at bridge_forward+0x322/frame 0xfffffe00003ab7c0 bridge_input() at bridge_input+0x5f4/frame 0xfffffe00003ab830 ether_nh_input() at ether_nh_input+0x2ab/frame 0xfffffe00003ab870 netisr_dispatch_src() at netisr_dispatch_src+0x80/frame 0xfffffe00003ab8d0 ether_input() at ether_input+0x62/frame 0xfffffe00003ab900 vtnet_rxq_eof() at vtnet_rxq_eof+0x835/frame 0xfffffe00003ab9b0 vtnet_rx_vq_intr() at vtnet_rx_vq_intr+0x4e/frame 0xfffffe00003ab9e0 intr_event_execute_handlers() at intr_event_execute_handlers+0x96/frame 0xfffffe00003aba20 ithread_loop() at ithread_loop+0xa6/frame 0xfffffe00003aba70 fork_exit() at fork_exit+0x84/frame 0xfffffe00003abab0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00003abab0 --- trap 0, rip =3D 0, rsp =3D 0, rbp =3D 0 --- KDB: enter: panic [ thread pid 11 tid 100025 ] Stopped at kdb_enter+0x3b: movq $0,kdb_why --=20 You are receiving this mail because: You are the assignee for the bug.=