Public bug reported:
Following a kernel upgrade from linux-image-4.4.0-116-generic to linux-
image-4.4.0-144-generic, our IPTables-based firewall have become
unstable and have crashed twice with identical-looking backtraces after
a short uptime.
When running linux-image-4.4.0-116-generic the firewall had been up and
running stable with an uptime of well over a year. Therefore, I highly
suspect that this is a bug that has been introduced between the two
versions mentioned.
These are the backtraces printed to the serial console when it crashed.
Crash #1 (after approx. 3 days of uptime):
[258363.286572] ------------[ cut here ]------------
[258363.311248] kernel BUG at
/build/linux-lts-xenial-YWfqtJ/linux-lts-xenial-4.4.0/net/core/skbuff.c:1207!
[258363.362309] invalid opcode: 0000 [#1] SMP
[258363.385411] Modules linked in: ip6table_raw ip6table_mangle ip6t_REJECT
nf_reject_ipv6 iptable_raw xt_nat iptable_nat nf_nat_ipv4 nf_nat xt_mark
iptable_mangle xt_comment ipt_REJECT nf_reject_ipv4 xt_NFLOG xt_limit xt_tcpudp
xt_iprange ip_set_hash_net hpwdt nfnetlink_log ip6table_filter ip6_tables
xt_set ip_set nfnetlink xt_multiport xt_conntrack iptable_filter ip_tables
x_tables dm_crypt intel_powerclamp coretemp kvm_intel kvm irqbypass
crct10dif_pclmul nf_conntrack_irc nf_conntrack_tftp nf_conntrack_ftp
crc32_pclmul ghash_clmulni_intel hpilo aesni_intel aes_x86_64 nf_conntrack_ipv6
acpi_power_meter mac_hid lrw 8250_fintek nf_defrag_ipv6 shpchp gpio_ich
gf128mul serio_raw nf_conntrack_ipv4 i7core_edac glue_helper nf_defrag_ipv4
edac_core nf_conntrack ablk_helper cryptd lpc_ich ipmi_ssif ipmi_devintf
ipmi_si ipmi_msghandler ipip tunnel4 ip_tunnel 8021q garp mrp stp llc bonding
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor
raid6_pq libcrc32c raid1 raid0 multipath linear amdkfd amd_iommu_v2 radeon
ixgbe i2c_algo_bit ttm dca drm_kms_helper vxlan syscopyarea ip6_udp_tunnel
sysfillrect udp_tunnel sysimgblt ptp fb_sys_fops hpsa pps_core psmouse drm mdio
bnx2 scsi_transport_sas fjes
[258363.967279] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.0-144-generic
#170~14.04.1-Ubuntu
[258364.011349] Hardware name: HP ProLiant DL360 G7, BIOS P68 07/02/2013
[258364.045068] task: ffffffff81e15500 ti: ffffffff81e00000 task.ti:
ffffffff81e00000
[258364.085793] RIP: 0010:[<ffffffff81711d07>] [<ffffffff81711d07>]
pskb_expand_head+0x227/0x260
[258364.132139] RSP: 0018:ffff88011ba03b90 EFLAGS: 00010202
[258364.162253] RAX: 0000000000000002 RBX: ffff8800bff20e00 RCX:
0000000002080020
[258364.201311] RDX: 0000000000000140 RSI: 0000000000000000 RDI:
ffff8800bff20e00
[258364.240352] RBP: ffff88011ba03bc8 R08: 0000000000000001 R09:
ffff8800d8720000
[258364.279499] R10: ffffffffffffffff R11: 0000000000000040 R12:
0000000000000000
[258364.319220] R13: ffff8800bff20e00 R14: 0000000000000001 R15:
ffff8800d327fdce
[258364.358038] FS: 0000000000000000(0000) GS:ffff88011ba00000(0000)
knlGS:0000000000000000
[258364.401198] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[258364.432486] CR2: 00007fcdc0672543 CR3: 0000000001e0c000 CR4:
0000000000020670
[258364.470918] Stack:
[258364.481920] ffff88011ba03de0 ffff88011ba03de0 ffff8800bff20e00
ffff88011ba03ca0
[258364.521426] 0000000000000001 0000000000000001 ffff8800d327fdce
ffff88011ba03c10
[258364.561323] ffffffff81713aa0 ffff8802195c3b28 0000000100000005
ffff8800bff20e00
[258364.601724] Call Trace:
[258364.615234] <IRQ>
[258364.626239] [<ffffffff81713aa0>] __pskb_pull_tail+0x50/0x350
[258364.658220] [<ffffffff818051b6>] _decode_session6+0x2e6/0x490
[258364.690802] [<ffffffff817b9653>] __xfrm_decode_session+0x33/0x50
[258364.724086] [<ffffffff817ef8e4>] icmpv6_route_lookup+0xf4/0x1d0
[258364.756501] [<ffffffff817f0341>] icmp6_send+0x5f1/0x920
[258364.786304] [<ffffffff810dfa3a>] ? handle_edge_irq+0xba/0x180
[258364.818506] [<ffffffffc056e230>] ? nf_ct_net_exit+0x50/0x50
[nf_defrag_ipv6]
[258364.856875] [<ffffffff81808fe1>] icmpv6_send+0x21/0x30
[258364.884947] [<ffffffff817f7250>] ip6_expire_frag_queue+0xe0/0x120
[258364.918555] [<ffffffffc056e24f>] nf_ct_frag6_expire+0x1f/0x30
[nf_defrag_ipv6]
[258364.957884] [<ffffffff810edd87>] call_timer_fn+0x37/0x140
[258364.988097] [<ffffffffc056e230>] ? nf_ct_net_exit+0x50/0x50
[nf_defrag_ipv6]
[258365.027226] [<ffffffff810ee133>] run_timer_softirq+0x213/0x320
[258365.065587] [<ffffffff81087625>] __do_softirq+0xe5/0x2b0
[258365.100276] [<ffffffff81087a26>] irq_exit+0x96/0xa0
[258365.132826] [<ffffffff81830c40>] smp_apic_timer_interrupt+0x50/0x70
[258365.172450] [<ffffffff8182e3bc>] apic_timer_interrupt+0xcc/0xe0
[258365.210589] <EOI>
[258365.221544] [<ffffffff816c2339>] ? cpuidle_enter_state+0xc9/0x280
[258365.266485] [<ffffffff816c232b>] ? cpuidle_enter_state+0xbb/0x280
[258365.305657] [<ffffffff816c2527>] cpuidle_enter+0x17/0x20
[258365.339899] [<ffffffff810c5752>] call_cpuidle+0x32/0x60
[258365.372832] [<ffffffff816c2509>] ? cpuidle_select+0x19/0x20
[258365.407697] [<ffffffff810c5a10>] cpu_startup_entry+0x290/0x350
[258365.443997] [<ffffffff81820f0c>] rest_init+0x7c/0x80
[258365.476503] [<ffffffff81f6b0f7>] start_kernel+0x4a7/0x4b4
[258365.511376] [<ffffffff81f6aa3b>] ? set_init_arg+0x55/0x55
[258365.546509] [<ffffffff81f6a120>] ? early_idt_handler_array+0x120/0x120
[258365.585481] [<ffffffff81f6a5ee>] x86_64_start_reservations+0x2a/0x2c
[258365.623803] [<ffffffff81f6a71d>] x86_64_start_kernel+0x12d/0x13a
[258365.660778] Code: ff ff ff 90 e9 54 ff ff ff 48 89 d7 48 89 55 c8 e8 0f b1
a8 ff 84 c0 48 8b 55 c8 75 97 eb 91 41 81 cf 00 20 00 00 e9 2a fe ff ff <0f> 0b
0f 0b 44 89 fe 4c 89 ef e8 7a ec ff ff 85 c0 74 12 48 89
[258365.772214] RIP [<ffffffff81711d07>] pskb_expand_head+0x227/0x260
[258365.811291] RSP <ffff88011ba03b90>
[258365.850327] ---[ end trace 4625108fd52df30d ]---
[258365.879532] Kernel panic - not syncing: Fatal exception in interrupt
[258365.918544] Kernel Offset: disabled
[258365.940516] ---[ end Kernel panic - not syncing: Fatal exception in
interrupt
[258365.983012] ------------[ cut here ]------------
[258366.012138] WARNING: CPU: 0 PID: 0 at
/build/linux-lts-xenial-YWfqtJ/linux-lts-xenial-4.4.0/arch/x86/kernel/smp.c:125
native_smp_send_reschedule+0x63/0x70()
[258366.095628] Modules linked in: ip6table_raw ip6table_mangle ip6t_REJECT
nf_reject_ipv6 iptable_raw xt_nat iptable_nat nf_nat_ipv4 nf_nat xt_mark
iptable_mangle xt_comment ipt_REJECT nf_reject_ipv4 xt_NFLOG xt_limit xt_tcpudp
xt_iprange ip_set_hash_net hpwdt nfnetlink_log ip6table_filter ip6_tables
xt_set ip_set nfnetlink xt_multiport xt_conntrack iptable_filter ip_tables
x_tables dm_crypt intel_powerclamp coretemp kvm_intel kvm irqbypass
crct10dif_pclmul nf_conntrack_irc nf_conntrack_tftp nf_conntrack_ftp
crc32_pclmul ghash_clmulni_intel hpilo aesni_intel aes_x86_64 nf_conntrack_ipv6
acpi_power_meter mac_hid lrw 8250_fintek nf_defrag_ipv6 shpchp gpio_ich
gf128mul serio_raw nf_conntrack_ipv4 i7core_edac glue_helper nf_defrag_ipv4
edac_core nf_conntrack ablk_helper cryptd lpc_ich ipmi_ssif ipmi_devintf
ipmi_si ipmi_msghandler ipip tunnel4 ip_tunnel 8021q garp mrp stp llc bonding
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor
raid6_pq libcrc32c raid1 raid0 multipath linear amdkfd amd_iommu_v2 radeon
ixgbe i2c_algo_bit ttm dca drm_kms_helper vxlan syscopyarea ip6_udp_tunnel
sysfillrect udp_tunnel sysimgblt ptp fb_sys_fops hpsa pps_core psmouse drm mdio
bnx2 scsi_transport_sas fjes
[258366.718283] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G D
4.4.0-144-generic #170~14.04.1-Ubuntu
[258366.775794] Hardware name: HP ProLiant DL360 G7, BIOS P68 07/02/2013
[258366.815370] 0000000000000000 ffff88011ba03630 ffffffff813ee977
0000000000000000
[258366.860330] ffffffff81cb16a0 ffff88011ba03668 ffffffff810829c6
0000000000000003
[258366.905824] ffff88021f857300 0000000000000000 0000000000000000
00000000000103a8
[258366.950305] Call Trace:
[258366.968301] <IRQ> [<ffffffff813ee977>] dump_stack+0x63/0x8c
[258367.003999] [<ffffffff810829c6>] warn_slowpath_common+0x86/0xc0
[258367.040181] [<ffffffff81082aba>] warn_slowpath_null+0x1a/0x20
[258367.075756] [<ffffffff8104f903>] native_smp_send_reschedule+0x63/0x70
[258367.117247] [<ffffffff810c0239>] trigger_load_balance+0x149/0x1f0
[258367.156319] [<ffffffff810afb8a>] scheduler_tick+0xaa/0xe0
[258367.191036] [<ffffffff810ffb60>] ? tick_sched_handle.isra.15+0x60/0x60
[258367.231378] [<ffffffff810f03e1>] update_process_times+0x51/0x60
[258367.269277] [<ffffffff810ffb25>] tick_sched_handle.isra.15+0x25/0x60
[258367.310291] [<ffffffff810ffb9d>] tick_sched_timer+0x3d/0x70
[258367.345839] [<ffffffff810f0fa3>] __hrtimer_run_queues+0xf3/0x270
[258367.385068] [<ffffffff810f1458>] hrtimer_interrupt+0xa8/0x1a0
[258367.422105] [<ffffffff8105264b>] local_apic_timer_interrupt+0x3b/0x60
[258367.462399] [<ffffffff81830c3b>] smp_apic_timer_interrupt+0x4b/0x70
[258367.501999] [<ffffffff8182e3bc>] apic_timer_interrupt+0xcc/0xe0
[258367.539699] [<ffffffff8118c558>] ? panic+0x1d7/0x221
[258367.572401] [<ffffffff81030b7f>] oops_end+0xff/0x100
[258367.604987] [<ffffffff810310cb>] die+0x4b/0x70
[258367.633915] [<ffffffff8102e02d>] do_trap+0x13d/0x150
[258367.665701] [<ffffffff8102e397>] do_error_trap+0x77/0xe0
[258367.699734] [<ffffffff81711d07>] ? pskb_expand_head+0x227/0x260
[258367.737141] [<ffffffff8182cb80>] ? _raw_read_unlock_bh+0x20/0x30
[258367.775096] [<ffffffff817de13d>] ? ip6_pol_route.isra.39+0x2dd/0x5e0
[258367.815744] [<ffffffff8102e7f0>] do_invalid_op+0x20/0x30
[258367.850598] [<ffffffff8182f89e>] invalid_op+0x1e/0x30
[258367.883143] [<ffffffff81711d07>] ? pskb_expand_head+0x227/0x260
[258367.920118] [<ffffffff81713aa0>] __pskb_pull_tail+0x50/0x350
[258367.956178] [<ffffffff818051b6>] _decode_session6+0x2e6/0x490
[258367.992355] [<ffffffff817b9653>] __xfrm_decode_session+0x33/0x50
[258368.030623] [<ffffffff817ef8e4>] icmpv6_route_lookup+0xf4/0x1d0
[258368.066652] [<ffffffff817f0341>] icmp6_send+0x5f1/0x920
[258368.099028] [<ffffffff810dfa3a>] ? handle_edge_irq+0xba/0x180
[258368.135157] [<ffffffffc056e230>] ? nf_ct_net_exit+0x50/0x50
[nf_defrag_ipv6]
[258368.178097] [<ffffffff81808fe1>] icmpv6_send+0x21/0x30
[258368.210498] [<ffffffff817f7250>] ip6_expire_frag_queue+0xe0/0x120
[258368.247215] [<ffffffffc056e24f>] nf_ct_frag6_expire+0x1f/0x30
[nf_defrag_ipv6]
[258368.291091] [<ffffffff810edd87>] call_timer_fn+0x37/0x140
[258368.323741] [<ffffffffc056e230>] ? nf_ct_net_exit+0x50/0x50
[nf_defrag_ipv6]
[258368.366009] [<ffffffff810ee133>] run_timer_softirq+0x213/0x320
[258368.402165] [<ffffffff81087625>] __do_softirq+0xe5/0x2b0
[258368.436015] [<ffffffff81087a26>] irq_exit+0x96/0xa0
[258368.465881] [<ffffffff81830c40>] smp_apic_timer_interrupt+0x50/0x70
[258368.503227] [<ffffffff8182e3bc>] apic_timer_interrupt+0xcc/0xe0
[258368.539120] <EOI> [<ffffffff816c2339>] ? cpuidle_enter_state+0xc9/0x280
[258368.579263] [<ffffffff816c232b>] ? cpuidle_enter_state+0xbb/0x280
[258368.616444] [<ffffffff816c2527>] cpuidle_enter+0x17/0x20
[258368.648794] [<ffffffff810c5752>] call_cpuidle+0x32/0x60
[258368.680904] [<ffffffff816c2509>] ? cpuidle_select+0x19/0x20
[258368.715039] [<ffffffff810c5a10>] cpu_startup_entry+0x290/0x350
[258368.750114] [<ffffffff81820f0c>] rest_init+0x7c/0x80
[258368.781110] [<ffffffff81f6b0f7>] start_kernel+0x4a7/0x4b4
[258368.814687] [<ffffffff81f6aa3b>] ? set_init_arg+0x55/0x55
[258368.847884] [<ffffffff81f6a120>] ? early_idt_handler_array+0x120/0x120
[258368.887214] [<ffffffff81f6a5ee>] x86_64_start_reservations+0x2a/0x2c
[258368.925863] [<ffffffff81f6a71d>] x86_64_start_kernel+0x12d/0x13a
[258368.962150] ---[ end trace 4625108fd52df30e ]---
Crash #2 (after approx 10.5 days of uptime):
[904742.422354] ------------[ cut here ]------------
[904742.446596] kernel BUG at
/build/linux-lts-xenial-YWfqtJ/linux-lts-xenial-4.4.0/net/core/skbuff.c:1207!
[904742.496670] invalid opcode: 0000 [#1] SMP
[904742.519107] Modules linked in: btrfs ufs qnx4 hfsplus hfs minix ntfs msdos
jfs xfs cpuid ip6table_raw ip6table_mangle ip6t_REJECT nf_reject_ipv6
iptable_raw xt_nat iptable_nat nf_nat_ipv4 nf_nat xt_mark iptable_mangle
xt_comment ipt_REJECT nf_reject_ipv4 xt_NFLOG xt_limit xt_tcpudp xt_iprange
ip_set_hash_net hpwdt nfnetlink_log ip6table_filter ip6_tables xt_set ip_set
nfnetlink xt_multiport xt_conntrack iptable_filter ip_tables x_tables dm_crypt
nf_conntrack_irc nf_conntrack_tftp nf_conntrack_ftp nf_conntrack_ipv6
nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ipmi_devintf
ipmi_ssif intel_powerclamp coretemp gpio_ich kvm_intel kvm hpilo irqbypass
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel 8250_fintek
aes_x86_64 lrw gf128mul i7core_edac glue_helper ablk_helper cryptd serio_raw
shpchp edac_core lpc_ich acpi_power_meter mac_hid ipmi_si ipmi_msghandler ipip
tunnel4 ip_tunnel 8021q garp mrp stp llc bonding raid10 raid456
async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq
libcrc32c raid1 raid0 multipath linear amdkfd amd_iommu_v2 radeon ixgbe
i2c_algo_bit ttm dca drm_kms_helper vxlan syscopyarea ip6_udp_tunnel
sysfillrect udp_tunnel sysimgblt ptp fb_sys_fops pps_core hpsa psmouse drm bnx2
mdio scsi_transport_sas fjes
[904743.129561] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 4.4.0-144-generic
#170~14.04.1-Ubuntu
[904743.174542] Hardware name: HP ProLiant DL360 G7, BIOS P68 07/02/2013
[904743.208594] task: ffff88011a8ff2c0 ti: ffff88011a900000 task.ti:
ffff88011a900000
[904743.248704] RIP: 0010:[<ffffffff81711d07>] [<ffffffff81711d07>]
pskb_expand_head+0x227/0x260
[904743.295812] RSP: 0018:ffff88011ba43b90 EFLAGS: 00010202
[904743.325174] RAX: 0000000000000002 RBX: ffff88001556d700 RCX:
0000000002080020
[904743.364584] RDX: 0000000000000140 RSI: 0000000000000000 RDI:
ffff88001556d700
[904743.403388] RBP: ffff88011ba43bc8 R08: 0000000000000001 R09:
ffff88011a720cc0
[904743.443277] R10: ffffffffffffffff R11: 0000000000000040 R12:
0000000000000000
[904743.483003] R13: ffff88001556d700 R14: 0000000000000001 R15:
ffff880081b041ce
[904743.522145] FS: 0000000000000000(0000) GS:ffff88011ba40000(0000)
knlGS:0000000000000000
[904743.567296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[904743.599236] CR2: 00007f421b3fb151 CR3: 0000000001e0c000 CR4:
0000000000020670
[904743.639170] Stack:
[904743.650908] ffff88011ba43de0 ffff88011ba43de0 ffff88001556d700
ffff88011ba43ca0
[904743.692211] 0000000000000001 0000000000000001 ffff880081b041ce
ffff88011ba43c10
[904743.732787] ffffffff81713aa0 ffff880034673328 0000000100000005
ffff88001556d700
[904743.773609] Call Trace:
[904743.787351] <IRQ>
[904743.797682] [<ffffffff81713aa0>] __pskb_pull_tail+0x50/0x350
[904743.829594] [<ffffffff818051b6>] _decode_session6+0x2e6/0x490
[904743.861962] [<ffffffff817b9653>] __xfrm_decode_session+0x33/0x50
[904743.895682] [<ffffffff817ef8e4>] icmpv6_route_lookup+0xf4/0x1d0
[904743.929316] [<ffffffff817f0341>] icmp6_send+0x5f1/0x920
[904743.958366] [<ffffffff81724853>] ? netif_receive_skb_internal+0x23/0x80
[904743.995988] [<ffffffff811ebabd>] ? kmem_cache_free+0x1dd/0x200
[904744.028305] [<ffffffffc048b230>] ? nf_ct_net_exit+0x50/0x50
[nf_defrag_ipv6]
[904744.067020] [<ffffffff81808fe1>] icmpv6_send+0x21/0x30
[904744.095285] [<ffffffff817f7250>] ip6_expire_frag_queue+0xe0/0x120
[904744.128497] [<ffffffffc048b24f>] nf_ct_frag6_expire+0x1f/0x30
[nf_defrag_ipv6]
[904744.168251] [<ffffffff810edd87>] call_timer_fn+0x37/0x140
[904744.204546] [<ffffffffc048b230>] ? nf_ct_net_exit+0x50/0x50
[nf_defrag_ipv6]
[904744.248459] [<ffffffff810ee133>] run_timer_softirq+0x213/0x320
[904744.285473] [<ffffffff81087625>] __do_softirq+0xe5/0x2b0
[904744.320390] [<ffffffff81087a26>] irq_exit+0x96/0xa0
[904744.352580] [<ffffffff81830c40>] smp_apic_timer_interrupt+0x50/0x70
[904744.391918] [<ffffffff8182e3bc>] apic_timer_interrupt+0xcc/0xe0
[904744.429091] <EOI>
[904744.440129] [<ffffffff816c2339>] ? cpuidle_enter_state+0xc9/0x280
[904744.484424] [<ffffffff816c232b>] ? cpuidle_enter_state+0xbb/0x280
[904744.522613] [<ffffffff816c2527>] cpuidle_enter+0x17/0x20
[904744.557681] [<ffffffff810c5752>] call_cpuidle+0x32/0x60
[904744.591840] [<ffffffff816c2509>] ? cpuidle_select+0x19/0x20
[904744.627778] [<ffffffff810c5a10>] cpu_startup_entry+0x290/0x350
[904744.664245] [<ffffffff810508cc>] start_secondary+0x16c/0x190
[904744.700506] Code: ff ff ff 90 e9 54 ff ff ff 48 89 d7 48 89 55 c8 e8 0f b1
a8 ff 84 c0 48 8b 55 c8 75 97 eb 91 41 81 cf 00 20 00 00 e9 2a fe ff ff <0f> 0b
0f 0b 44 89 fe 4c 89 ef e8 7a ec ff ff 85 c0 74 12 48 89
[904744.813128] RIP [<ffffffff81711d07>] pskb_expand_head+0x227/0x260
[904744.853577] RSP <ffff88011ba43b90>
[904744.894718] ---[ end trace b25a46ce8b731c75 ]---
[904744.925568] Kernel panic - not syncing: Fatal exception in interrupt
[904744.963823] Kernel Offset: disabled
[904744.986232] ---[ end Kernel panic - not syncing: Fatal exception in
interrupt
[904745.029237] ------------[ cut here ]------------
[904745.058307] WARNING: CPU: 2 PID: 0 at
/build/linux-lts-xenial-YWfqtJ/linux-lts-xenial-4.4.0/arch/x86/kernel/smp.c:125
native_smp_send_reschedule+0x63/0x70()
[904745.141586] Modules linked in: btrfs ufs qnx4 hfsplus hfs minix ntfs msdos
jfs xfs cpuid ip6table_raw ip6table_mangle ip6t_REJECT nf_reject_ipv6
iptable_raw xt_nat iptable_nat nf_nat_ipv4 nf_nat xt_mark iptable_mangle
xt_comment ipt_REJECT nf_reject_ipv4 xt_NFLOG xt_limit xt_tcpudp xt_iprange
ip_set_hash_net hpwdt nfnetlink_log ip6table_filter ip6_tables xt_set ip_set
nfnetlink xt_multiport xt_conntrack iptable_filter ip_tables x_tables dm_crypt
nf_conntrack_irc nf_conntrack_tftp nf_conntrack_ftp nf_conntrack_ipv6
nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ipmi_devintf
ipmi_ssif intel_powerclamp coretemp gpio_ich kvm_intel kvm hpilo irqbypass
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel 8250_fintek
aes_x86_64 lrw gf128mul i7core_edac glue_helper ablk_helper cryptd serio_raw
shpchp edac_core lpc_ich acpi_power_meter mac_hid ipmi_si ipmi_msghandler ipip
tunnel4 ip_tunnel 8021q garp mrp stp llc bonding raid10 raid456
async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq
libcrc32c raid1 raid0 multipath linear amdkfd amd_iommu_v2 radeon ixgbe
i2c_algo_bit ttm dca drm_kms_helper vxlan syscopyarea ip6_udp_tunnel
sysfillrect udp_tunnel sysimgblt ptp fb_sys_fops pps_core hpsa psmouse drm bnx2
mdio scsi_transport_sas fjes
[904745.792265] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G D
4.4.0-144-generic #170~14.04.1-Ubuntu
[904745.849608] Hardware name: HP ProLiant DL360 G7, BIOS P68 07/02/2013
[904745.889008] 0000000000000000 ffff88011ba43630 ffffffff813ee977
0000000000000000
[904745.934005] ffffffff81cb16a0 ffff88011ba43668 ffffffff810829c6
000000000000000b
[904745.978889] ffff88021f957300 0000000000000002 0000000000000002
00000000000103a8
[904746.023956] Call Trace:
[904746.042665] <IRQ> [<ffffffff813ee977>] dump_stack+0x63/0x8c
[904746.079135] [<ffffffff810829c6>] warn_slowpath_common+0x86/0xc0
[904746.117250] [<ffffffff81082aba>] warn_slowpath_null+0x1a/0x20
[904746.153396] [<ffffffff8104f903>] native_smp_send_reschedule+0x63/0x70
[904746.193309] [<ffffffff810c0239>] trigger_load_balance+0x149/0x1f0
[904746.232264] [<ffffffff810afb8a>] scheduler_tick+0xaa/0xe0
[904746.266577] [<ffffffff810ffb60>] ? tick_sched_handle.isra.15+0x60/0x60
[904746.307624] [<ffffffff810f03e1>] update_process_times+0x51/0x60
[904746.344548] [<ffffffff810ffb25>] tick_sched_handle.isra.15+0x25/0x60
[904746.383846] [<ffffffff810ffb9d>] tick_sched_timer+0x3d/0x70
[904746.419496] [<ffffffff810f0fa3>] __hrtimer_run_queues+0xf3/0x270
[904746.456808] [<ffffffff810f1458>] hrtimer_interrupt+0xa8/0x1a0
[904746.493033] [<ffffffff8105264b>] local_apic_timer_interrupt+0x3b/0x60
[904746.533936] [<ffffffff81830c3b>] smp_apic_timer_interrupt+0x4b/0x70
[904746.573266] [<ffffffff8182e3bc>] apic_timer_interrupt+0xcc/0xe0
[904746.610493] [<ffffffff8118c558>] ? panic+0x1d7/0x221
[904746.642355] [<ffffffff81030b7f>] oops_end+0xff/0x100
[904746.674523] [<ffffffff810310cb>] die+0x4b/0x70
[904746.703901] [<ffffffff8102e02d>] do_trap+0x13d/0x150
[904746.736623] [<ffffffff8102e397>] do_error_trap+0x77/0xe0
[904746.770575] [<ffffffff81711d07>] ? pskb_expand_head+0x227/0x260
[904746.807344] [<ffffffff8182cb80>] ? _raw_read_unlock_bh+0x20/0x30
[904746.845076] [<ffffffff817de13d>] ? ip6_pol_route.isra.39+0x2dd/0x5e0
[904746.884317] [<ffffffff8102e7f0>] do_invalid_op+0x20/0x30
[904746.918813] [<ffffffff8182f89e>] invalid_op+0x1e/0x30
[904746.952198] [<ffffffff81711d07>] ? pskb_expand_head+0x227/0x260
[904746.989190] [<ffffffff81713aa0>] __pskb_pull_tail+0x50/0x350
[904747.024669] [<ffffffff818051b6>] _decode_session6+0x2e6/0x490
[904747.061384] [<ffffffff817b9653>] __xfrm_decode_session+0x33/0x50
[904747.099629] [<ffffffff817ef8e4>] icmpv6_route_lookup+0xf4/0x1d0
[904747.136625] [<ffffffff817f0341>] icmp6_send+0x5f1/0x920
[904747.170345] [<ffffffff81724853>] ? netif_receive_skb_internal+0x23/0x80
[904747.211048] [<ffffffff811ebabd>] ? kmem_cache_free+0x1dd/0x200
[904747.246771] [<ffffffffc048b230>] ? nf_ct_net_exit+0x50/0x50
[nf_defrag_ipv6]
[904747.290157] [<ffffffff81808fe1>] icmpv6_send+0x21/0x30
[904747.322350] [<ffffffff817f7250>] ip6_expire_frag_queue+0xe0/0x120
[904747.360290] [<ffffffffc048b24f>] nf_ct_frag6_expire+0x1f/0x30
[nf_defrag_ipv6]
[904747.403474] [<ffffffff810edd87>] call_timer_fn+0x37/0x140
[904747.436740] [<ffffffffc048b230>] ? nf_ct_net_exit+0x50/0x50
[nf_defrag_ipv6]
[904747.479154] [<ffffffff810ee133>] run_timer_softirq+0x213/0x320
[904747.515067] [<ffffffff81087625>] __do_softirq+0xe5/0x2b0
[904747.547965] [<ffffffff81087a26>] irq_exit+0x96/0xa0
[904747.578018] [<ffffffff81830c40>] smp_apic_timer_interrupt+0x50/0x70
[904747.615196] [<ffffffff8182e3bc>] apic_timer_interrupt+0xcc/0xe0
[904747.649664] <EOI> [<ffffffff816c2339>] ? cpuidle_enter_state+0xc9/0x280
[904747.690024] [<ffffffff816c232b>] ? cpuidle_enter_state+0xbb/0x280
[904747.728252] [<ffffffff816c2527>] cpuidle_enter+0x17/0x20
[904747.761598] [<ffffffff810c5752>] call_cpuidle+0x32/0x60
[904747.793746] [<ffffffff816c2509>] ? cpuidle_select+0x19/0x20
[904747.827736] [<ffffffff810c5a10>] cpu_startup_entry+0x290/0x350
[904747.863007] [<ffffffff810508cc>] start_secondary+0x16c/0x190
[904747.897172] ---[ end trace b25a46ce8b731c76 ]---
** Affects: linux-meta-lts-xenial (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1828345
Title:
[possible regression] kernel BUG at [...]/linux-lts-
xenial-4.4.0/net/core/skbuff.c:1207
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