Public bug reported:
We get this kernel panic while running trusty with 3.19.0-26-generic.
It seems there is a bug in nf_nat module, I got kdump, if needed, I will upload.
[702076.560806] BUG: unable to handle kernel paging request at ffff820504022108
[702076.564428] IP: [<ffffffffc049e1c6>] nf_nat_setup_info+0x236/0x360 [nf_nat]
[702076.567971] PGD 0
[702076.571349] Oops: 0002 [#1] SMP
[702076.574656] Modules linked in: xt_nat iptable_nat nf_nat_ipv4 sch_sfq
sch_htb xt_comment xt_iprange xt_physdev act_police cls_u32 sch_ingress
ebt_dnat ebt_ip ebtable_nat ebt_arp veth xt_conntrack nbd nf_conntrack_netlink
xt_TCPMSS xt_CT xt_set ip_set_hash_net ip_set nfnetlink iptable_raw
ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter netconsole
configfs xt_CHECKSUM xt_tcpudp iptable_mangle ip_tables x_tables bonding
intel_rapl(E) iosf_mbi x86_pkg_temp_thermal(E) nf_nat intel_powerclamp(E)
nf_conntrack_pptp nf_conntrack_proto_gre coretemp(E) br_netfilter
crct10dif_pclmul ipmi_ssif(E) crc32_pclmul ghash_clmulni_intel aesni_intel
bridge stp aes_x86_64 llc lrw ipmi_devintf(E) nf_conntrack_ipv4 gf128mul
nf_defrag_ipv4 glue_helper ablk_helper cryptd mxm_wmi(E) dcdbas(E) sb_edac(E)
mei_me(E)
[702076.613908] nf_conntrack mei(E) lpc_ich(E) edac_core(E) drbd(OE)
ipmi_si(E) ipmi_msghandler 8250_fintek(E) shpchp(E) vhost_net vhost
acpi_power_meter(E) macvtap wmi(E) macvlan mac_hid(E) kvm_intel kvm lp xfs
parport libcrc32c ahci megaraid_sas(E) libahci tg3(E) ixgbe(OE) dca(E) vxlan
ip6_udp_tunnel udp_tunnel ptp pps_core
[702076.638776] CPU: 19 PID: 0 Comm: swapper/19 Tainted: G OE
3.19.0-26-generic #28~14.04.1
[702076.649826] Hardware name: Dell Inc. PowerEdge R730/0WCJNT, BIOS 2.1.5
04/11/2016
[702076.661111] task: ffff883011c49d70 ti: ffff881812224000 task.ti:
ffff881812224000
[702076.672654] RIP: 0010:[<ffffffffc049e1c6>] [<ffffffffc049e1c6>]
nf_nat_setup_info+0x236/0x360 [nf_nat]
[702076.684662] RSP: 0018:ffff88301eb235b8 EFLAGS: 00010286
[702076.690647] RAX: ffff882fbcd21700 RBX: ffff882f17b1bd40 RCX:
ffff820504022100
[702076.702499] RDX: ffff88180fb7f038 RSI: 000000003637ced5 RDI:
ffffffffc04a04a0
[702076.714455] RBP: ffff88301eb23668 R08: 0000000000000000 R09:
ffff88301eb235b8
[702076.726823] R10: ffff88301eb23560 R11: ffff88300eeb8000 R12:
000000000006fe07
[702076.739167] R13: 0000000000000000 R14: ffffffff81cda040 R15:
ffff88301eb23678
[702076.751481] FS: 0000000000000000(0000) GS:ffff88301eb20000(0000)
knlGS:0000000000000000
[702076.763823] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[702076.770007] CR2: ffff820504022108 CR3: 0000000001c16000 CR4:
00000000001427e0
[702076.782162] Stack:
[702076.788035] 000000002755e673 0000000000000000 a402c68b0002259b
0000000000000000
[702076.799835] 0006500000000000 000000002755e673 0000000000000000
a402c68b0002259b
[702076.811642] 0000000000000000 0006500000000000 ffff88300db05800
ffff8830001b0e70
[702076.823573] Call Trace:
[702076.829377] <IRQ>
[702076.829447]
[702076.835069] [<ffffffffc049e342>] __nf_nat_alloc_null_binding+0x52/0x80
[nf_nat]
[702076.846350] [<ffffffffc049e391>] nf_nat_alloc_null_binding+0x21/0x30
[nf_nat]
[702076.857721] [<ffffffffc05d283d>] nf_nat_ipv4_fn+0x1dd/0x230 [nf_nat_ipv4]
[702076.863548] [<ffffffffc05d7020>] ? iptable_nat_ipv4_fn+0x20/0x20
[iptable_nat]
[702076.874933] [<ffffffffc0518580>] ? br_parse_ip_options+0x1b0/0x1b0
[br_netfilter]
[702076.886328] [<ffffffffc05d2968>] nf_nat_ipv4_out+0x48/0xf0 [nf_nat_ipv4]
[702076.892120] [<ffffffffc0518580>] ? br_parse_ip_options+0x1b0/0x1b0
[br_netfilter]
[702076.903384] [<ffffffffc05d7085>] iptable_nat_ipv4_out+0x15/0x20
[iptable_nat]
[702076.914648] [<ffffffff816dcb1a>] nf_iterate+0x9a/0xb0
[702076.920275] [<ffffffffc0518580>] ? br_parse_ip_options+0x1b0/0x1b0
[br_netfilter]
[702076.931324] [<ffffffff816dcba4>] nf_hook_slow+0x74/0x130
[702076.936913] [<ffffffffc0518580>] ? br_parse_ip_options+0x1b0/0x1b0
[br_netfilter]
[702076.947932] [<ffffffffc05188a3>] br_nf_post_routing+0x283/0x370
[br_netfilter]
[702076.959286] [<ffffffffc0458c30>] ? deliver_clone+0x60/0x60 [bridge]
[702076.965049] [<ffffffffc0458c30>] ? deliver_clone+0x60/0x60 [bridge]
[702076.970612] [<ffffffff816dcb1a>] nf_iterate+0x9a/0xb0
[702076.976050] [<ffffffffc0458c30>] ? deliver_clone+0x60/0x60 [bridge]
[702076.981437] [<ffffffff816dcba4>] nf_hook_slow+0x74/0x130
[702076.986715] [<ffffffffc0458c30>] ? deliver_clone+0x60/0x60 [bridge]
[702076.992071] [<ffffffffc0458fc0>] ? br_flood+0x160/0x160 [bridge]
[702076.997487] [<ffffffffc0459012>] br_forward_finish+0x52/0x60 [bridge]
[702077.002855] [<ffffffffc0518a5b>] br_nf_forward_finish+0xcb/0x1d0
[br_netfilter]
[702077.013278] [<ffffffffc0518d8c>] br_nf_forward_ip+0x22c/0x400
[br_netfilter]
[702077.023700] [<ffffffffc0458fc0>] ? br_flood+0x160/0x160 [bridge]
[702077.029033] [<ffffffffc0458fc0>] ? br_flood+0x160/0x160 [bridge]
[702077.034166] [<ffffffff816dcb1a>] nf_iterate+0x9a/0xb0
[702077.039182] [<ffffffffc0458fc0>] ? br_flood+0x160/0x160 [bridge]
[702077.044116] [<ffffffff816dcba4>] nf_hook_slow+0x74/0x130
[702077.048952] [<ffffffffc0458fc0>] ? br_flood+0x160/0x160 [bridge]
[702077.053787] [<ffffffffc04591d0>] __br_forward+0xb0/0xf0 [bridge]
[702077.058482] [<ffffffffc04594c3>] br_forward+0x93/0xb0 [bridge]
[702077.063064] [<ffffffffc045a3cb>] br_handle_frame_finish+0x13b/0x540
[bridge]
[702077.071975] [<ffffffffc0519438>] br_nf_pre_routing_finish+0x138/0x3e0
[br_netfilter]
[702077.081089] [<ffffffffc0519993>] br_nf_pre_routing+0x2b3/0x67d
[br_netfilter]
[702077.090349] [<ffffffffc045a290>] ? br_handle_local_finish+0x90/0x90
[bridge]
[702077.099691] [<ffffffff816dcb1a>] nf_iterate+0x9a/0xb0
[702077.104349] [<ffffffffc045a290>] ? br_handle_local_finish+0x90/0x90
[bridge]
[702077.113680] [<ffffffff816dcba4>] nf_hook_slow+0x74/0x130
[702077.118542] [<ffffffffc045a290>] ? br_handle_local_finish+0x90/0x90
[bridge]
[702077.128284] [<ffffffffc045a958>] br_handle_frame+0x188/0x250 [bridge]
[702077.133363] [<ffffffffc00c36cd>] ? ixgbe_clean_rx_irq+0x84d/0x1030 [ixgbe]
[702077.138488] [<ffffffff816a9e42>] __netif_receive_skb_core+0x1b2/0x790
[702077.143624] [<ffffffff816aa438>] __netif_receive_skb+0x18/0x60
[702077.148671] [<ffffffff816ab1a6>] process_backlog+0xa6/0x150
[702077.153592] [<ffffffff816aa8f9>] net_rx_action+0x159/0x340
[702077.158403] [<ffffffff81078ee4>] __do_softirq+0xe4/0x270
[702077.163088] [<ffffffff810792ad>] irq_exit+0x9d/0xb0
[702077.167676] [<ffffffff817b986a>] do_IRQ+0x5a/0xf0
[702077.172319] [<ffffffff817b766d>] common_interrupt+0x6d/0x6d
[702077.176967] <EOI>
[702077.177035]
[702077.181593] [<ffffffff8164fed0>] ? cpuidle_enter_state+0x70/0x170
[702077.186279] [<ffffffff8164febd>] ? cpuidle_enter_state+0x5d/0x170
[702077.190914] [<ffffffff81650087>] cpuidle_enter+0x17/0x20
[702077.195573] [<ffffffff810b5404>] cpu_startup_entry+0x334/0x3d0
[702077.200246] [<ffffffff810e9d63>] ? clockevents_register_device+0xe3/0x140
[702077.204961] [<ffffffff81048cf7>] start_secondary+0x197/0x1c0
[702077.209553] Code: c0 0f 84 3e 01 00 00 48 01 d0 48 89 58 10 49 8b 96 98 0b
00 00 4a 8d 14 e2 48 8b 0a 48 89 50 08 48 89 08 48 85 c9 48 89 02 74 04 <48> 89
41 08 48 c7 c7 a0 04 4a c0 e8 5a 82 31 c1 48 81 8b 80 00
[702077.223475] RIP [<ffffffffc049e1c6>] nf_nat_setup_info+0x236/0x360 [nf_nat]
[702077.228017] RSP <ffff88301eb235b8>
[702077.232409] CR2: ffff820504022108
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: trusty
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https://bugs.launchpad.net/bugs/1615681
Title:
BUG: unable to handle kernel paging request at ffff820504022108
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