From mboxrd@z Thu Jan 1 00:00:00 1970 From: Govindarajulu Varadarajan <_govind@gmx.com> Subject: Re: [PATCH net-next 1/8] flow_keys: Record IP layer protocol in skb_flow_dissect() Date: Thu, 26 Jun 2014 12:04:01 +0530 (IST) Message-ID: References: <1402338773-5996-1-git-send-email-_govind@gmx.com> <1402338773-5996-2-git-send-email-_govind@gmx.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: Govindarajulu Varadarajan <_govind@gmx.com>, David Miller , NetDev , ssujith@cisco.com, gvaradar@cisco.com, benve@cisco.com To: Yinghai Lu Return-path: Received: from mout.gmx.com ([74.208.4.201]:62127 "EHLO mout.gmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753455AbaFZGef (ORCPT ); Thu, 26 Jun 2014 02:34:35 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Mon, 23 Jun 2014, Yinghai Lu wrote: > this patch in net-next cause kernel crash. > > [ 148.466045] qlge 0000:4a:00.1 eth27: Passed Get Port Configuration. > [ 162.385445] BUG: unable to handle kernel paging request at 000000010000007e > [ 162.385839] IP: [] __dev_queue_xmit+0x399/0x630 > [ 162.398541] PGD 0 > [ 162.398659] Oops: 0002 [#1] SMP > [ 162.398845] Modules linked in: > [ 162.399022] CPU: 5 PID: 1 Comm: swapper/0 Tainted: G W > 3.16.0-rc2-yh-00302-g3d5dc41-dirty #22 > [ 162.418490] Hardware name: Oracle Corporation unknown / > , BIOS 11016600 05/17/2011 > [ 162.438851] task: ffff884027a80000 ti: ffff881027d20000 task.ti: > ffff881027d20000 > [ 162.468329] RIP: 0010:[] [] > __dev_queue_xmit+0x399/0x630 > [ 162.488085] RSP: 0000:ffff881027d23d28 EFLAGS: 00010202 > [ 162.488345] RAX: 00000000fffffffe RBX: ffff887026041000 RCX: 0000000000000001 > [ 162.508245] RDX: 0000000000000000 RSI: ffffffff82dfee78 RDI: ffff884027a80000 > [ 162.508590] RBP: ffff881027d23d70 R08: 0000000000000001 R09: 0000000000000000 > [ 162.528255] R10: 0000000000000000 R11: ffff885026020800 R12: ffffffff82dfedc0 > [ 162.547963] R13: ffff881022b7c000 R14: 0000000000000dac R15: ffff88702434c400 > [ 162.548310] FS: 0000000000000000(0000) GS:ffff88103f000000(0000) > knlGS:0000000000000000 > [ 162.568186] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > [ 162.568489] CR2: 000000010000007e CR3: 0000000002c19000 CR4: 00000000000007e0 > [ 162.588263] Stack: > [ 162.588354] ffffffff81f18505 0000000000000000 00ff881027d23d80 > ffffffff82dfee60 > [ 162.608269] ffff885023dd1e40 ffff881022b7c000 ffff885026020929 > 0000000000000dac > [ 162.628043] ffff887026041000 ffff881027d23d80 ffffffff81f18b40 > ffff881027d23e18 > [ 162.628422] Call Trace: > [ 162.647963] [] ? __dev_queue_xmit+0x5/0x630 > [ 162.648284] [] dev_queue_xmit+0x10/0x20 > [ 162.667987] [] ip_auto_config+0x8e6/0xf13 > [ 162.668282] [] ? do_one_initcall+0xdd/0x1e0 > [ 162.688018] [] ? trace_hardirqs_on+0xd/0x10 > [ 162.688298] [] ? ktime_get+0xbf/0x140 > [ 162.708029] [] ? root_nfs_parse_addr+0xbd/0xbd > [ 162.708292] [] do_one_initcall+0xe3/0x1e0 > [ 162.728075] [] ? parse_args+0x1ed/0x330 > [ 162.728340] [] ? printk+0x54/0x56 > [ 162.748027] [] kernel_init_freeable+0x237/0x2ce > [ 162.748344] [] ? do_early_param+0x8a/0x8a > [ 162.768070] [] ? rest_init+0xc0/0xc0 > [ 162.768318] [] kernel_init+0xe/0x100 > [ 162.788057] [] ret_from_fork+0x7c/0xb0 > [ 162.788314] [] ? rest_init+0xc0/0xc0 > [ 162.808008] Code: e8 5d 48 18 ff eb 13 48 c7 c7 60 d9 c5 82 e8 cf > bc 1c ff 85 c0 74 dd 0f 1f 00 48 8b 43 58 48 83 e0 fe 48 85 c0 48 89 > 43 58 74 07 ff 80 80 00 00 00 4c 89 e6 48 89 df 41 ff 14 24 41 89 > c6 41 > [ 162.828797] RIP [] __dev_queue_xmit+0x399/0x630 > [ 162.848186] RSP > [ 162.848341] CR2: 000000010000007e > [ 162.848490] ---[ end trace 26b7736a09036e46 ]--- > [ 162.868194] Kernel panic - not syncing: Fatal exception in interrupt > [ 162.872673] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation > range: 0xffffffff80000000-0xffffffff9fffffff) > [ 162.888531] ---[ end Kernel panic - not syncing: Fatal exception in interrupt > [ 162.908306] ------------[ cut here ]------------ > > After the commit is reverted, the system work again. I do not see any problem in my system. Did you try disecting what "__dev_queue_xmit+0x399/0x630" is? On what interface did the crash occur on? is it bond interface? Thanks