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From devnull@lkml.org Sat Apr 27 11:57:18 2024 >From spaans Wed Nov 26 10:45:55 2014 Received: from pop.ziggo.nl [212.54.42.19] by squeeze.vs19.net with POP3 (fetchmail-6.3.21) for (single-drop); Wed, 26 Nov 2014 10:45:55 +0100 (CET) Received: from md5.tb.mail.iss.local ([212.54.42.152]) by mc5.tb.mail.iss.local (Dovecot) with LMTP id iPp2DZ+edVRACAAAh0Kp1A for ; Wed, 26 Nov 2014 10:45:40 +0100 Received: from mx24.tb.mail.iss.as9143.net ([212.54.42.152]) by md5.tb.mail.iss.local (Dovecot) with LMTP id f16LRDfSF1QDBAAA7jSZHA ; Wed, 26 Nov 2014 10:46:55 +0100 Received: from vger.kernel.org ([209.132.180.67]) by mx24.tb.mail.iss.as9143.net with esmtp (Exim 4.82) (envelope-from ) id 1XtZAJ-0003qD-Cx for bmw12-lkml@ziggo.nl; Wed, 26 Nov 2014 10:45:40 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752067AbaKZJp2 (ORCPT ); Wed, 26 Nov 2014 04:45:28 -0500 Received: from smtp.citrix.com ([66.165.176.89]:62885 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750848AbaKZJpZ (ORCPT ); Wed, 26 Nov 2014 04:45:25 -0500 X-Ironport-AV: E=Sophos;i="5.07,461,1413244800"; d="scan'208";a="196705424" Message-Id: <1416995122.11944.29.camel@citrix.com> Subject: Re: [Xen-devel] Regression in netfilter code under Xen From: Ian Campbell To: Boris Ostrovsky Cc: xen-devel , Wei Liu , Linux Kernel Mailing List , , David Vrabel , Date: Wed, 26 Nov 2014 09:45:22 +0000 In-Reply-To: <5474E537.7010707@oracle.com> References: <5474E537.7010707@oracle.com> Organization: Citrix Systems, Inc. Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.7-1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-DLP: MIA1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-Id: X-Mailing-List: linux-kernel@vger.kernel.org X-Ziggo-spamsetting: Instelling=Gemiddeld Scorelimiet=14 X-Ziggo-spambar: / X-Ziggo-spamscore: -0.3 X-Ziggo-spamreport: BAYES_00=-1.9,CM_SPACED_DATE=0.5,HEADER_FROM_DIFFERENT_DOMAINS=0.006,L_TAB_IN_FROM=2,RCVD_IN_JMF_W=-1,RCVD_IN_MSPIKE_H3=-0.01,RCVD_IN_MSPIKE_WL=-0.01,TW_IV=0.077,TW_KM=0.077,T_RP_MATCHES_RCVD=-0.01 X-Ziggo-Spam-Status: No X-Spam-Status: No X-Spam-Flag: No On Tue, 2014-11-25 at 15:23 -0500, Boris Ostrovsky wrote: > We have a regression due to (5195c14c8: netfilter: conntrack: fix race > in __nf_conntrack_confirm against get_next_corpse). I have not been able > to reproduce this on baremetal but dom0 crashes reliably after a few > seconds of idle time. Are guests running when this happens? (IOW is netback possibly involved). > This doesn't appear to be dependent on Xen version > --- I saw it on at least a 4.2 and unstable). > > I don't know much about networking (and will be out for most of the rest > of the week) so I wonder whether anyone has any ideas. The stack is below. > > > Thanks. > -boris > > #  > [ > 54.901368] general protection fault: 0000 [#1] SMP > [ 54.919324] Modules linked in: dm_multipath dm_mod xen_evtchn > iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport > libcrc32c crc32c_generic crc32c_intel sg sr_mod cdrom sd_mod i915 fbcon > tileblit font bitblit softcursor tpm_tis ahci libahci libata > drm_kms_helper video scsi_mod e1000e wmi xen_blkfront xen_netfront > fb_sys_fops sysimgblt sysfillrect syscopyarea xenfs xen_privcmd > [ 54.996767] CPU: 1 PID: 0 Comm: swapper/1 Not tainted > 3.18.0-rc5upstream-00179-g8a84e01 #1 > [ 55.016730] Hardware name: LENOVO ThinkServer TS130/ , BIOS > 9HKT47AUS 01/10/2012 > [ 55.036873] task: ffff880037e48a10 ti: ffff880037e54000 task.ti: > ffff880037e54000 > [ 55.057338] RIP: e030:[] [] > nf_ct_del_from_dying_or_unconfirmed_list+0x3e/0x70 > [ 55.[ 55.099069] RAX: dead000000200200 RBX: ffffe8ffffc89108 RCX: > ffffffff81cc5820 > [ 55.119918] RDX: 0000000080000001 RSI: 0000000000000011 RDI: > ffffe8ffffc89108 > [ 55.140768] RBP: ffff88003e283908 R08: 00000000c5f889ff R09: > 00000000a1a10f28 > [ 55.161785] R10: ffff880037e5f1b8 R11: 0000000000000001 R12: > ffff880037e5f148 > [ 55.183005] R13: ffffffff815e6a6b R14: ffff88002bed8400 R15: > ffff88002bb30000 > [ 55.204214] FS: 00007f668f694700(0000) GS[ 55.225733] CS: e033 > DS: 002b ES: 002b CR0: 0000000080050033 > [ 55.247220] CR2: 00007f66c0a598eb CR3: 000000002bc39000 CR4: > 0000000000042660 > [ 55.268863] Stack: > [ 55.290200] ffff880037e5f148 ffffffff81c98080 ffff88003e283928 > ffffffff815eb59d > [ 55.312068] ffff88002bed8400 ffff88002bed8400 ffff88003e283938 > ffffffff815e689a > [ 55.333849] ffff88003e283958 ffffffff815a37a5 ffff88003e283968 > ffff88002bed8400 > [ 55.355449] Call Trace: > [ 55.376552] > [ 55.376728] [] destroy_conntrack+0x5d/0xc0 > [ 55.418187] [] nf_conntrack_destroy+0x1a/0x40 > [ 55.439349] [] skb_release_head_state+0x85/0xd0 > [ 55.460468] [] skb_release_all+0x11/0x30 > [ 55.481440] [] __kfree_skb+0x11/0xc0 > [ 55.502239] [] kfree_skb+0x38/0xa0 > [ 55.522661] [] ? ip_rcv+0x3a0/0x3a0 > [ 55.542811] [] ? ip_rcv+0x3a0/0x3a0 > [ 55.562543] [] nf_hook_slow+0x10b/0x120 > [ 55.582100] [] ? ip_rcv+0x3a0/0x3a0 > [ 55.601470] [] ? _raw_spin_unlock_irqrestore+0[ > 55.620900] [] ip_local_deliver+0x73/0x80 > [ 55.640154] [] ip_rcv_finish+0x109/0x310 > [ 55.659244] [] ip_rcv+0x28c/0x3a0 > [ 55.678287] [] > __netif_receive_skb_core+0x58e/0x[ 55.697287] [] > __netif_receive_skb+0x1d/0x70 > [ 55.715820] [] netif_receive_skb_internal+0x1e/0xb0 > [ 55.734442] [] netif_receive_skb+0x17/0x70 > [ 55.752898] [] br_handle_frame_finish+0x192/0x360 > [ 55.771709] [] br_handle_frame+0 > [ 55.790274] [] ? br_handle_local_finish+0x40/0x40 > [ 55.808760] [] __netif_receive_skb_core+0x1d7/0x710 > [ 55.827302] [] __netif_receive_skb+0x1d/0x70 > [ 55.845594] [] netif_receive_skb_internal+0x1e/0xb0 > [ 55.863836] [] napi_gro_receive+0x118/0x1a0 > [ 55.881549] [] tg3_poll_work+0xe1f/0x1[ > 55.898629] [] tg3_poll+0x69/0x3c0 > [ 55.915010] [] net_rx_action+0x103/0x290 > [ 55.930840] [] __do_softirq+0xf3/0x2e0 > [ 55.946310] [] irq_exit+0xcd/0xe0 > [ 55.961399] [] xen_evtchn_do_upcall+0x37/0x50 > 766] [] xen_do_hypervisor_callback+0x1e/0x30 > [ 55.990802] > [ 55.990977] [] ? xen_hypercall_sched_op+0xa/0x20 > [ 56.018897] [] ? xen_hypercall_sched_op+0xa/0x20 > [ 56.032815] [] ? xen_safe_halt+0x10/0x20 > [ 56.046583] [] ? default_idle+0x1a/0xd0 > [ 56.060307] [] ? arch_cpu_idle+0xa/0x10 > [ 56.073920] [] ? cpu_startup_entry+0x2d3/0[ > 56.100421] [] ? cpu_bringup_and_idle+0x25/0x40 > [ 56.113427] Code: 98 08 08 00 00 0f b7 47 08 48 03 1c c5 a0 42 cc 81 > 48 89 df e8 94 fc 11 00 49 8b 44 24 18 48 85 c0 74 2d 49[ > 56.141507] RIP [] > nf_ct_del_from_dying_or_unconfirmed_list+0x3e/0x70 > [ 56.155425] RSP > [ 56.169234] ---[ end trace 4c64578e4c629cc4 ]--- > [ 56.182913] Kernel panic - not syncing: Fatal exception in interrupt > [ 56.197026] Kernel Offset: 0x0 from 0xffffffff81000k text console > (XEN) [2014-11-23 06:05:48] Domain 0 crashed: rebooting machine in 5 > seconds. > (XEN) [2014-11-23 06:05:53] Resetting with ACPI MEMORY or I/O RESET_REG. > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel -- 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/