Workload: pppoe server, 5k users on ppp interfaces. No actual SNAT/DNAT,
but using connmark and REDIRECT
[176412.990104] general protection fault: 0000 [#1]
SMP
[176412.990424] Modules linked in:
sch_pie
cls_fw
act_police
cls_u32
sch_ingress
sch_sfq
sch_htb
netconsole
[176412.991427] configfs
coretemp
nf_nat_pptp
nf_nat_proto_gre
nf_conntrack_pptp
nf_conntrack_proto_gre
pppoe
pppox
[176412.992571] ppp_generic
slhc
[176412.993218] tun
xt_REDIRECT
nf_nat_redirect
xt_TCPMSS
ipt_REJECT
nf_reject_ipv4
xt_set
ts_bm
xt_string
xt_connmark
xt_DSCP
xt_mark
xt_tcpudp
ip_set_hash_net
ip_set_hash_ip
ip_set
nfnetlink
iptable_mangle
iptable_filter
iptable_nat
nf_conntrack_ipv4
nf_defrag_ipv4
nf_nat_ipv4
nf_nat
nf_conntrack
ip_tables
x_tables
8021q
[176412.996208] garp
mrp
stp
llc
[176412.996834] CPU: 5 PID: 0 Comm: swapper/5 Not tainted
4.6.3-build-0105 #4
[176412.997037] Hardware name: HP ProLiant DL320e Gen8 v2, BIOS P80
04/02/2015
[176412.997241] task: ffff88043558af00 ti: ffff8804355a0000 task.ti:
ffff8804355a0000
[176412.997580] RIP: 0010:[<ffffffffa003d0f7>]
[<ffffffffa003d0f7>] nf_ct_delete+0x26/0x1dc [nf_conntrack]
[176412.997985] RSP: 0018:ffff8804474a3e80 EFLAGS: 00010282
[176412.998187] RAX: ffff880428bc0c90 RBX: ffac050402505080 RCX:
dead000000000200
[176412.998524] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
ffff880428bc0c08
[176412.998865] RBP: ffff8804474a3ec8 R08: ffff8804474a3f08 R09:
0000000000000000
[176412.999204] R10: ffffffff820050c0 R11: 000000000000049a R12:
ffff880428bc0c08
[176412.999545] R13: 0000000000000000 R14: 0000000000000000 R15:
ffffffff820050c8
[176412.999885] FS: 0000000000000000(0000) GS:ffff8804474a0000(0000)
knlGS:0000000000000000
[176413.000226] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[176413.000427] CR2: 00007f1dc4960100 CR3: 0000000002006000 CR4:
00000000001406e0
[176413.000767] Stack:
[176413.000963] ffff8804474a3ec0
ffffffff810fb036
ffff88043558af07
ffff8804474adcc0
[176413.001534] 0000000080000100
ffffffffa003d2ad
00000000000000a1
ffff8804355a4000
[176413.002097] ffffffff820050c8
ffff8804474a3ed8
ffffffffa003d2ba
ffff8804474a3ef8
[176413.002666] Call Trace:
[176413.002862] <IRQ>
[176413.002926] [<ffffffff810fb036>] ? hrtimer_forward+0xd5/0xeb
[176413.003322] [<ffffffffa003d2ad>] ? nf_ct_delete+0x1dc/0x1dc
[nf_conntrack]
[176413.003525] [<ffffffffa003d2ba>] death_by_timeout+0xd/0xf
[nf_conntrack]
[176413.003727] [<ffffffff810fa823>] call_timer_fn.isra.26+0x17/0x6d
[176413.003931] [<ffffffff810fa9ef>] run_timer_softirq+0x176/0x197
[176413.004134] [<ffffffff810c401a>] __do_softirq+0xb9/0x1a9
[176413.004333] [<ffffffff810c4251>] irq_exit+0x37/0x7c
[176413.004533] [<ffffffff8102b8f7>] smp_apic_timer_interrupt+0x3d/0x48
[176413.004734] [<ffffffff818cb15c>] apic_timer_interrupt+0x7c/0x90
[176413.004935] <EOI>
[176413.004997] [<ffffffff8101be12>] ? mwait_idle+0x68/0x7e
[176413.005391] [<ffffffff8101c212>] arch_cpu_idle+0xa/0xc
[176413.005592] [<ffffffff810ea333>] default_idle_call+0x27/0x29
[176413.005791] [<ffffffff810ea44a>] cpu_startup_entry+0x115/0x1bf
[176413.005993] [<ffffffff8102a289>] start_secondary+0xf1/0xf4
[176413.006193] Code:
5e
41
5f
5d
c3
55
48
89
e5
41
57
41
56
41
55
41
54
41
89
f5
53
49
89
fc
41
89
d6
48
83
ec
20
48
8b
9f
c8
00
00
00
48
85
db
74
20
b7
43
1c
66
85
c0
74
17
48
01
c3
74
12
48
83
7b
08
00
75
0b
[176413.010382] RIP
[<ffffffffa003d0f7>] nf_ct_delete+0x26/0x1dc [nf_conntrack]
[176413.010643] RSP <ffff8804474a3e80>
[176413.010855] ---[ end trace cf1060fc5087293e ]---
[176413.018573] Kernel panic - not syncing: Fatal exception in interrupt
[176413.018781] Kernel Offset: disabled
[176413.046284] ERST: [Firmware Warn]: Firmware does not respond in
time.
[176413.050041] Rebooting in 5 seconds..
