Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967086Ab3E2VMb (ORCPT ); Wed, 29 May 2013 17:12:31 -0400 Received: from chaos.universe-factory.net ([5.9.180.86]:55744 "EHLO chaos.universe-factory.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966994Ab3E2VMW (ORCPT ); Wed, 29 May 2013 17:12:22 -0400 X-Greylist: delayed 573 seconds by postgrey-1.27 at vger.kernel.org; Wed, 29 May 2013 17:12:21 EDT Message-ID: <51A66CF3.7010202@universe-factory.net> Date: Wed, 29 May 2013 23:02:43 +0200 From: Matthias Schiffer User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6 MIME-Version: 1.0 To: davem@davemloft.net, kuznet@ms2.inr.ac.ru, jmorris@namei.org, yoshfuji@linux-ipv6.org, kaber@trash.net CC: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Kernel panic in IPv6 ndisc/redirect in kernel 3.9.4 X-Enigmail-Version: 1.5.1 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="----enig2LMLMCLVKTLJTVBLRQOXH" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6303 Lines: 137 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) ------enig2LMLMCLVKTLJTVBLRQOXH Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi, we've hit the following panic several times in the last days on some of our servers running kernel 3.9.4. Is seems to be a regression in the 3.9 series, as we never hit it with 3.8.x or earlier. Please let me know if there is anything more I can do to help fix this; I probably won't have time to try to reproduce this on a test machine and/or bisect it till weekend. [25743.461449] skbuff: skb_over_panic: text:ffffffff814866d8 len:608 put:8 head:ffff88001d643400 data:ffff88001d643466 tail:0x2c6 end:0x2c0 dev:freifunk-hl [25743.471582] ------------[ cut here ]------------ [25743.473301] kernel BUG at net/core/skbuff.c:126! [25743.474113] invalid opcode: 0000 [#1] PREEMPT SMP [25743.474113] Modules linked in: sit tunnel4 bridge stp llc tun ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip6t_NPT iptable_mangle iptable_filter xt_mark ip6table_mangle ip_tables ip6_tables x_tables kvm_amd kvm psmouse evdev serio_raw pcspkr i2c_piix4 intel_agp processor i2c_core button intel_gtt batman_adv crc32c libcrc32c ext4 crc16 mbcache jbd2 ata_generic pata_acpi uhci_hcd ata_piix usbcore usb_common libata scsi_mod floppy virtio_balloon virtio_net virtio_pci virtio_blk virtio_ring virtio [25743.474113] CPU 0 [25743.474113] Pid: 317, comm: fastd Not tainted 3.9.4-1-ARCH #1 Bochs Bo= chs [25743.474113] RIP: 0010:[] [] skb_panic+0x63/0x65 [25743.474113] RSP: 0018:ffff88001fc03998 EFLAGS: 00010282 [25743.474113] RAX: 000000000000008c RBX: 0000000000000008 RCX: ffff88001fc0fed0 [25743.474113] RDX: 0000000000000000 RSI: ffff88001fc0dfc8 RDI: 0000000000000246 [25743.474113] RBP: ffff88001fc039b8 R08: ffffffff818b4220 R09: 00000000000001eb [25743.474113] R10: 303a646e65203663 R11: 7665642030633278 R12: 0000000000000000 [25743.474113] R13: ffff88001ccfff00 R14: 0000000000000008 R15: 0000000000000006 [25743.474113] FS: 00007fd1e10d2700(0000) GS:ffff88001fc00000(0000) knlGS:0000000000000000 [25743.474113] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [25743.474113] CR2: 00007f777b64d838 CR3: 000000001d7fc000 CR4: 00000000000006f0 [25743.474113] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [25743.474113] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [25743.474113] Process fastd (pid: 317, threadinfo ffff88001df30000, task ffff88001f764300) [25743.474113] Stack: [25743.474113] ffff88001d643466 00000000000002c6 00000000000002c0 ffff88001cd90000 [25743.474113] ffff88001fc039c8 ffffffff813ca996 ffff88001fc03a10 ffffffff814866d8 [25743.474113] 0000000000000002 ffff88001fc03a68 ffff88001ccff100 ffff88001ccfff00 [25743.474113] Call Trace: [25743.474113] [25743.474113] [] skb_put+0x46/0x50 [25743.474113] [] ndisc_fill_addr_option+0x68/0xd0 [25743.474113] [] ndisc_send_redirect+0x329/0x3d0 [25743.474113] [] ? fib_rules_lookup+0x101/0x160 [25743.474113] [] ip6_forward+0x7d1/0x820 [25743.474113] [] ip6_rcv_finish+0x80/0x90 [25743.474113] [] ipv6_rcv+0x289/0x400 [25743.474113] [] __netif_receive_skb_core+0x65a/0x8b0= [25743.474113] [] __netif_receive_skb+0x18/0x60 [25743.474113] [] netif_receive_skb+0x33/0xc0 [25743.474113] [] br_handle_frame_finish+0x230/0x330 [bridge] [25743.474113] [] br_nf_pre_routing_finish_ipv6+0xe7/0x160 [bridge] [25743.474113] [] br_nf_pre_routing+0x589/0x6f0 [bridg= e] [25743.474113] [] nf_iterate+0x8b/0xa0 [25743.474113] [] ? br_handle_local_finish+0x60/0x60 [bridge] [25743.474113] [] nf_hook_slow+0x7c/0x120 [25743.474113] [] ? br_handle_local_finish+0x60/0x60 [bridge] [25743.474113] [] br_handle_frame+0x1d0/0x270 [bridge]= [25743.474113] [] __netif_receive_skb_core+0x232/0x8b0= [25743.474113] [] __netif_receive_skb+0x18/0x60 [25743.474113] [] process_backlog+0xae/0x1a0 [25743.474113] [] net_rx_action+0x161/0x280 [25743.474113] [] __do_softirq+0xe7/0x2a0 [25743.474113] [] call_softirq+0x1c/0x30 [25743.474113] [25743.474113] [] do_softirq+0x55/0x90 [25743.474113] [] netif_rx_ni+0x60/0x80 [25743.474113] [] tun_get_user+0x3fd/0x7b0 [tun] [25743.474113] [] tun_chr_aio_write+0x79/0xb0 [tun] [25743.474113] [] do_sync_write+0xa0/0xe0 [25743.474113] [] ? rw_verify_area+0x52/0xd0 [25743.474113] [] vfs_write+0x9b/0x170 [25743.474113] [] sys_write+0x49/0xa0 [25743.474113] [] system_call_fastpath+0x1a/0x1f [25743.474113] Code: 00 00 48 89 44 24 10 8b 87 d4 00 00 00 48 89 44 24 08 48 8b 87 e8 00 00 00 48 c7 c7 a8 91 74 81 48 89 04 24 31 c0 e8 73 b7 ff ff <0f> 0b 66 66 66 66 90 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb [25743.474113] RIP [] skb_panic+0x63/0x65 [25743.474113] RSP [25743.615687] ---[ end trace 49c54f3f1691b26e ]--- [25743.617203] Kernel panic - not syncing: Fatal exception in interrupt ------enig2LMLMCLVKTLJTVBLRQOXH Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.20 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlGmbPMACgkQq3qIxbiQM9hH0gCdHdlF4oaH5cnTKsLJZwLLltVQ aIUAnAgj943ovtcVoJwSkHifppv+aldM =RUR3 -----END PGP SIGNATURE----- ------enig2LMLMCLVKTLJTVBLRQOXH-- -- 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/