From owner-freebsd-net@FreeBSD.ORG Tue Dec 23 03:03:43 2014 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 2B78D96F for ; Tue, 23 Dec 2014 03:03:43 +0000 (UTC) Received: from st11p02mm-asmtp002.mac.com (st11p02mm-asmtpout002.mac.com [17.172.220.237]) (using TLSv1.2 with cipher DHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 00FB16602D for ; Tue, 23 Dec 2014 03:03:42 +0000 (UTC) Received: from fukuyama.hsd1.ca.comcast.net (unknown [73.162.13.215]) by st11p02mm-asmtp002.mac.com (Oracle Communications Messaging Server 7.0.5.33.0 64bit (built Aug 27 2014)) with ESMTPSA id <0NH000EPPLU14330@st11p02mm-asmtp002.mac.com> for freebsd-net@freebsd.org; Tue, 23 Dec 2014 03:03:39 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.13.68,1.0.33,0.0.0000 definitions=2014-12-23_02:2014-12-23,2014-12-23,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1412080000 definitions=main-1412230027 From: Rui Paulo Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Subject: LOR in IGMP code Message-id: Date: Mon, 22 Dec 2014 19:03:37 -0800 To: FreeBSD Net MIME-version: 1.0 (Mac OS X Mail 8.1 \(1993\)) X-Mailer: Apple Mail (2.1993) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Dec 2014 03:03:43 -0000 Hi, I may look into this, but here it is. HEAD as of this week. lock order reversal: 1st 0xc2be2508 if_addr_lock (if_addr_lock) @ = /home/rpaulo/freebsd/sys/netinet/igmp.c:1716 2nd 0xc070d9bc ifnet_rw (ifnet_rw) @ = /home/rpaulo/freebsd/sys/net/if.c:243 KDB: stack backtrace: db_trace_self() at db_trace_self pc =3D 0xc0551534 lr =3D 0xc0233b58 = (db_trace_self_wrapper+0x30) sp =3D 0xdcfc5a18 fp =3D 0xdcfc5b30 r10 =3D 0xc070d9bc db_trace_self_wrapper() at db_trace_self_wrapper+0x30 pc =3D 0xc0233b58 lr =3D 0xc03a2f34 (kdb_backtrace+0x38) sp =3D 0xdcfc5b38 fp =3D 0xdcfc5b40 r4 =3D 0xc06a7a24 r5 =3D 0xc05a52a1 r6 =3D 0xc05c7a76 r7 =3D 0xc06da464 kdb_backtrace() at kdb_backtrace+0x38 pc =3D 0xc03a2f34 lr =3D 0xc03bd7e0 (witness_checkorder+0xe50) sp =3D 0xdcfc5b48 fp =3D 0xdcfc5b98 r4 =3D 0xc05c8031 witness_checkorder() at witness_checkorder+0xe50 pc =3D 0xc03bd7e0 lr =3D 0xc0369114 (__rw_rlock+0x94) sp =3D 0xdcfc5ba0 fp =3D 0xdcfc5bd0 r4 =3D 0x000000f3 r5 =3D 0xc05c7a73 r6 =3D 0xc070d9cc r7 =3D 0xc070d9bc r8 =3D 0xc2be2400 r9 =3D 0xc0705bfc r10 =3D 0x0000001c __rw_rlock() at __rw_rlock+0x94 pc =3D 0xc0369114 lr =3D 0xc042d2f0 (ifnet_byindex+0x28) sp =3D 0xdcfc5bd8 fp =3D 0xdcfc5be8 r4 =3D 0xc070d9cc r5 =3D 0x00000003 r6 =3D 0x00000000 r7 =3D 0xc0705bc0 r8 =3D 0xc2be2400 r9 =3D 0xc0705bfc r10 =3D 0x0000001c ifnet_byindex() at ifnet_byindex+0x28 pc =3D 0xc042d2f0 lr =3D 0xc0448bac (igmp_intr+0x18) sp =3D 0xdcfc5bf0 fp =3D 0xdcfc5c40 r4 =3D 0xc2bbfa00 r5 =3D 0xc2bbfa00 r6 =3D 0x00000000 igmp_intr() at igmp_intr+0x18 pc =3D 0xc0448bac lr =3D 0xc043a3a4 (netisr_dispatch_src+0xa8) sp =3D 0xdcfc5c48 fp =3D 0xdcfc5c70 r4 =3D 0x00000002 r5 =3D 0xc2bbfa00 r6 =3D 0x00000000 r7 =3D 0xc0705bc0 r8 =3D 0xc2be2400 r9 =3D 0xc0705bfc r10 =3D 0x0000001c netisr_dispatch_src() at netisr_dispatch_src+0xa8 pc =3D 0xc043a3a4 lr =3D 0xc043a734 (netisr_dispatch+0x14) sp =3D 0xdcfc5c78 fp =3D 0xdcfc5c78 r4 =3D 0xc2c27500 r5 =3D 0xc2bbfa00 r6 =3D 0x00000000 r7 =3D 0x00000000 r8 =3D 0xc2be2400 r9 =3D 0x00000016 r10 =3D 0x0000001c netisr_dispatch() at netisr_dispatch+0x14 pc =3D 0xc043a734 lr =3D 0xc04492cc = (igmp_v1v2_queue_report+0x1d8) sp =3D 0xdcfc5c80 fp =3D 0xdcfc5ca8 igmp_v1v2_queue_report() at igmp_v1v2_queue_report+0x1d8 pc =3D 0xc04492cc lr =3D 0xc0447df0 (igmp_fasttimo+0x3c4) sp =3D 0xdcfc5cb0 fp =3D 0xdcfc5d38 r4 =3D 0x00000002 r5 =3D 0xc2c25c00 r6 =3D 0xc05ca12c r7 =3D 0xc2acff60 r8 =3D 0x00000000 r9 =3D 0xc2c27500 r10 =3D 0xc070db70 igmp_fasttimo() at igmp_fasttimo+0x3c4 pc =3D 0xc0447df0 lr =3D 0xc03da754 (pffasttimo+0x4c) sp =3D 0xdcfc5d40 fp =3D 0xdcfc5d60 r4 =3D 0xc0677e40 r5 =3D 0xc0677fb0 r6 =3D 0xc070d648 r7 =3D 0xc070d610 r8 =3D 0xc070d644 r9 =3D 0x00000096 r10 =3D 0xc070d600 pffasttimo() at pffasttimo+0x4c pc =3D 0xc03da754 lr =3D 0xc03815a8 (softclock_call_cc+0x138) sp =3D 0xdcfc5d68 fp =3D 0xdcfc5dc0 r4 =3D 0x00000000 r5 =3D 0xc07046f8 softclock_call_cc() at softclock_call_cc+0x138 pc =3D 0xc03815a8 lr =3D 0xc0381708 (softclock+0x40) sp =3D 0xdcfc5dc8 fp =3D 0xdcfc5dd0 r4 =3D 0xc070d610 r5 =3D 0xc070d600 r6 =3D 0xc2516600 r7 =3D 0xc05af8e1 r8 =3D 0x000004be r9 =3D 0xc251662c r10 =3D 0x00000000 softclock() at softclock+0x40 pc =3D 0xc0381708 lr =3D 0xc033b9dc = (intr_event_execute_handlers+0xb8) sp =3D 0xdcfc5dd8 fp =3D 0xdcfc5df8 r4 =3D 0xc2859700 r5 =3D 0xc2859748 intr_event_execute_handlers() at intr_event_execute_handlers+0xb8 pc =3D 0xc033b9dc lr =3D 0xc033c32c (ithread_loop+0xa8) sp =3D 0xdcfc5e00 fp =3D 0xdcfc5e38 r4 =3D 0xc2505ec0 r5 =3D 0xc297dcc0 r6 =3D 0xc2859700 r7 =3D 0xc0669900 r8 =3D 0xc070d3e4 r9 =3D 0x00000000 r10 =3D 0xc05af8e1 ithread_loop() at ithread_loop+0xa8 pc =3D 0xc033c32c lr =3D 0xc033931c (fork_exit+0x80) sp =3D 0xdcfc5e40 fp =3D 0xdcfc5e58 r4 =3D 0xc297dcc0 r5 =3D 0xc297a6f0 r6 =3D 0xc033c284 r7 =3D 0xc2505ec0 r8 =3D 0xdcfc5e60 r9 =3D 0x00000000 r10 =3D 0x00000000 fork_exit() at fork_exit+0x80 pc =3D 0xc033931c lr =3D 0xc0553284 (swi_exit) sp =3D 0xdcfc5e60 fp =3D 0x00000000 r4 =3D 0xc033c284 r5 =3D 0xc2505ec0 r6 =3D 0x00000000 r7 =3D 0x00000000 r8 =3D 0x00000000 swi_exit() at swi_exit pc =3D 0xc0553284 lr =3D 0xc0553284 (swi_exit) sp =3D 0xdcfc5e60 fp =3D 0x00000000 -- Rui Paulo