Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755034AbbHQNhS (ORCPT ); Mon, 17 Aug 2015 09:37:18 -0400 Received: from mail-pa0-f44.google.com ([209.85.220.44]:33528 "EHLO mail-pa0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750759AbbHQNhQ (ORCPT ); Mon, 17 Aug 2015 09:37:16 -0400 Message-ID: <1439818633.7258.16.camel@edumazet-glaptop2.roam.corp.google.com> Subject: Re: Linux 4.2-rc6 regression: RIP: e030:[] [] detach_if_pending+0x18/0x80 From: Eric Dumazet To: Sander Eikelenboom Cc: David Miller , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, xen-devel@lists.xen.org, david.vrabel@citrix.com Date: Mon, 17 Aug 2015 06:37:13 -0700 In-Reply-To: <963062024.20150817110956@eikelenboom.it> References: <7c39e6332aae572372108d5fd68c503b@eikelenboom.it> <1439412094.29802.21.camel@edumazet-glaptop2.roam.corp.google.com> <0de9f30086ee2e662bdafee61d24b3c1@eikelenboom.it> <20150812.144040.1151964094247340464.davem@davemloft.net> <1439419279.29802.25.camel@edumazet-glaptop2.roam.corp.google.com> <3b284689aaa1573610c0e388e66e756a@eikelenboom.it> <1439591965.7507.6.camel@edumazet-glaptop2.roam.corp.google.com> <963062024.20150817110956@eikelenboom.it> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu2 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6138 Lines: 113 On Mon, 2015-08-17 at 11:09 +0200, Sander Eikelenboom wrote: > Saturday, August 15, 2015, 12:39:25 AM, you wrote: > > > On Sat, 2015-08-15 at 00:09 +0200, Sander Eikelenboom wrote: > >> On 2015-08-13 00:41, Eric Dumazet wrote: > >> > On Wed, 2015-08-12 at 23:46 +0200, Sander Eikelenboom wrote: > >> > > >> >> Thanks for the reminder, but luckily i was aware of that, > >> >> seen enough of your replies asking for patches to be resubmitted > >> >> against "the other tree" ;) > >> >> Kernel with patch is currently running so fingers crossed. > >> > > >> > Thanks for testing. I am definitely interested knowing your results. > >> > >> Hmm it seems now commit 83fccfc3940c4a2db90fd7e7079f5b465cd8c6af is > >> breaking things > >> (have to test if a revert helps) i get this in some guests: > > > > Yes, this was fixed by : > > http://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=83fccfc3940c4a2db90fd7e7079f5b465cd8c6af > > > Hi Eric, > > With that patch i had a crash again this night, see below. > > -- > Sander > > [177459.188808] general protection fault: 0000 [#1] SMP > [177459.199746] Modules linked in: > [177459.210540] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.2.0-rc6-20150815-linus-doflr-net+ #1 > [177459.221441] Hardware name: MSI MS-7640/890FXA-GD70 (MS-7640) , BIOS V1.8B1 09/13/2010 > [177459.232247] task: ffffffff8221a580 ti: ffffffff82200000 task.ti: ffffffff82200000 > [177459.242931] RIP: e030:[] [] detach_if_pending+0x18/0x80 > [177459.253503] RSP: e02b:ffff88005f6039d8 EFLAGS: 00010086 > [177459.264051] RAX: ffff8800584d6580 RBX: ffff880004901420 RCX: dead000000200200 > [177459.274599] RDX: 0000000000000000 RSI: ffff88005f60e5c0 RDI: ffff880004901420 > [177459.285122] RBP: ffff88005f6039d8 R08: 0000000000000001 R09: 0000000000000000 > [177459.295286] R10: 0000000000000003 R11: ffff880004901394 R12: 0000000000000003 > [177459.305388] R13: 000000010ae47040 R14: 0000000007b98a00 R15: ffff88005f60e5c0 > [177459.315345] FS: 00007f51317ec700(0000) GS:ffff88005f600000(0000) knlGS:0000000000000000 > [177459.325340] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b > [177459.335217] CR2: 00000000010f8000 CR3: 000000002a154000 CR4: 0000000000000660 > [177459.345129] Stack: > [177459.354783] ffff88005f603a28 ffffffff8110ee7f ffffffff810fb261 0000000000000200 > [177459.364505] 0000000000000003 ffff880004901380 0000000000000003 ffff8800567d0d00 > [177459.374064] 0000000007b98a00 0000000000000000 ffff88005f603a58 ffffffff819b3eb3 > [177459.383532] Call Trace: > [177459.392878] > [177459.392935] [] mod_timer_pending+0x3f/0xe0 > [177459.411058] [] ? __raw_callee_save___pv_queued_spin_unlock+0x11/0x20 > [177459.419876] [] __nf_ct_refresh_acct+0xa3/0xb0 > [177459.428642] [] tcp_packet+0xb3b/0x1290 > [177459.437285] [] ? ip_output+0x5e/0xc0 > [177459.445845] [] ? __local_bh_enable_ip+0x2a/0x90 > [177459.454331] [] ? __nf_conntrack_find_get+0x129/0x2a0 > [177459.462642] [] nf_conntrack_in+0x29c/0x7c0 > [177459.470711] [] ipv4_conntrack_local+0x4c/0x50 > [177459.478753] [] nf_iterate+0x4c/0x80 > [177459.486726] [] ? generic_handle_irq+0x27/0x40 > [177459.494634] [] nf_hook_slow+0x64/0xc0 > [177459.502486] [] __ip_local_out_sk+0x90/0xa0 > [177459.510248] [] ? ip_forward_options+0x1a0/0x1a0 > [177459.517782] [] ip_local_out_sk+0x16/0x40 > [177459.525044] [] ip_queue_xmit+0x14d/0x350 > [177459.532247] [] tcp_transmit_skb+0x48e/0x960 > [177459.539413] [] tcp_xmit_probe_skb+0xdb/0xf0 > [177459.546389] [] tcp_write_wakeup+0x5b/0x150 > [177459.553061] [] tcp_keepalive_timer+0x1fb/0x230 > [177459.559761] [] ? tcp_init_xmit_timers+0x20/0x20 > [177459.566447] [] call_timer_fn.isra.27+0x17/0x80 > [177459.573121] [] ? tcp_init_xmit_timers+0x20/0x20 > [177459.579778] [] run_timer_softirq+0x12d/0x200 > [177459.586448] [] __do_softirq+0x103/0x210 > [177459.593138] [] irq_exit+0x4b/0xa0 > [177459.599783] [] xen_evtchn_do_upcall+0x34/0x50 > [177459.606300] [] xen_do_hypervisor_callback+0x1e/0x40 > [177459.612583] > [177459.612637] [] ? xen_hypercall_sched_op+0xa/0x20 > [177459.625010] [] ? xen_hypercall_sched_op+0xa/0x20 > [177459.631157] [] ? xen_safe_halt+0x10/0x20 > [177459.637158] [] ? default_idle+0x13/0x20 > [177459.643072] [] ? arch_cpu_idle+0xa/0x10 > [177459.648809] [] ? default_idle_call+0x2e/0x50 > [177459.654650] [] ? cpu_startup_entry+0x272/0x2e0 > [177459.660488] [] ? rest_init+0x77/0x80 > [177459.666297] [] ? start_kernel+0x43b/0x448 > [177459.672092] [] ? x86_64_start_reservations+0x2a/0x2c > [177459.677800] [] ? xen_start_kernel+0x550/0x55c > [177459.683451] Code: 77 28 5d c3 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 48 8b 47 08 55 48 89 e5 48 85 c0 74 6a 48 8b 0f 48 85 c9 48 89 08 74 04 <48> 89 41 08 84 d2 74 08 48 c7 47 08 00 00 00 00 f6 47 2a 10 48 > [177459.695332] RIP [] detach_if_pending+0x18/0x80 > [177459.701154] RSP > (XEN) [2015-08-17 00:11:51.426] Hardware Dom0 crashed: rebooting machine in 5 seconds. > might be conntracking related then. You might try : 1) reproduce the issue without conntracking. 2) bisect the bug Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/