I've seen this crash at-least twice on an Intel Haswell machine. I
can't pin-point to an exact trigger. As of now, it crashed when I
tried to reboot a linux guest. Thought I'll post the trace here, just
in case someone wants to take a look.
I compiled kernel from kvm.git queue on both L0 and L1:
$ git describe
for-linus-12017-g8a3c1a33
$ git log | head -1
commit 8a3c1a33476f6bfebd07954e2277dbc88003bd37
Crash: (Found via serial console)
=========================
[177558.023358] BUG: soft lockup - CPU#0 stuck for 22s! [kworker/0:2:6155]
[177558.030845] Modules linked in: vhost_net vhost macvtap macvlan
kvm_intel kvm ebtable_nat xt_CHECKSUM tun nf_conntrack_netbios_ns
nf_conntrack_broadcast ipt_MASQUERADE ip6table_nat nf_nat_ipv6
ip6table_mangle ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6
iptable_nat nf_nat_ipv4 nf_nat iptable_mangle nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack ebtable_filter ebtables
ip6table_filter ip6_tables bridge stp llc snd_hda_codec_realtek
snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hwdep snd_seq
snd_seq_device snd_pcm snd_page_alloc iwlwifi snd_timer snd cfg80211
e1000e iTCO_wdt iTCO_vendor_support mei_me lpc_ich mfd_core soundcore
ptp mei pps_core serio_raw pcspkr rfkill i2c_i801 binfmt_misc i915
i2c_algo_bit drm_kms_helper drm i2c_core video
[177558.107179] CPU: 0 PID: 6155 Comm: kworker/0:2 Tainted: G D W
3.12.0-rc2+ #7
[177558.116045] Hardware name: Intel Corporation Shark Bay Client
platform/Flathead Creek Crb, BIOS HSWLPTU1.86C.0131.R03.1307262359
07/26/2013
[177558.130323] Workqueue: events jump_label_update_timeout
[177558.136344] task: ffff8804379d5dc0 ti: ffff88007c8a8000 task.ti:
ffff88007c8a8000
[177558.144913] RIP: 0010:[<ffffffff810cdf5e>] [<ffffffff810cdf5e>]
smp_call_function_many+0x25e/0x2c0
[177558.155263] RSP: 0018:ffff88007c8a9c68 EFLAGS: 00000202
[177558.161374] RAX: 0000000000000003 RBX: 0000000000000000 RCX:
ffff88044e2d73e8
[177558.169550] RDX: 0000000000000003 RSI: 0000000000000080 RDI:
0000000000000000
[177558.177726] RBP: ffff88007c8a9cc8 R08: ffff88044e214c88 R09:
0000000000000002
[177558.185902] R10: ffff88044e214c88 R11: 0000000000001f17 R12:
000000000000dd50
[177558.194077] R13: 000000fc00000000 R14: 0000000000000286 R15:
0000000000000286
[177558.202254] FS: 0000000000000000(0000) GS:ffff88044e200000(0000)
knlGS:0000000000000000
[177558.211514] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[177558.218115] CR2: 00007fd4757f6000 CR3: 0000000001c0c000 CR4:
00000000001427e0
[177558.226291] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[177558.234467] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[177558.242642] Stack:
[177558.245012] ffff88044e214c98 0000000181050e73 0000000000014c40
0000000000000000
[177558.253524] ffffffff81018be0 ffff88044e2d4c40 0000000000000202
ffffffffa040e705
[177558.262032] ffffffff81018be0 0000000000000000 ffffffffa040e706
ffffffffa042d560
[177558.270542] Call Trace:
[177558.273406] [<ffffffff81018be0>] ? setup_data_read+0x90/0x90
[177558.280014] [<ffffffffa040e705>] ? apic_has_pending_timer+0x15/0x90 [kvm]
[177558.287895] [<ffffffff81018be0>] ? setup_data_read+0x90/0x90
[177558.294501] [<ffffffffa040e706>] ? apic_has_pending_timer+0x16/0x90 [kvm]
[177558.302384] [<ffffffff810ce0fd>] on_each_cpu+0x2d/0x60
[177558.308398] [<ffffffffa040e705>] ? apic_has_pending_timer+0x15/0x90 [kvm]
[177558.316280] [<ffffffff8101938b>] text_poke_bp+0x5b/0xc0
[177558.322393] [<ffffffffa040e705>] ? apic_has_pending_timer+0x15/0x90 [kvm]
[177558.330274] [<ffffffff81016912>] __jump_label_transform.isra.0+0x112/0x140
[177558.338255] [<ffffffff81016977>] arch_jump_label_transform+0x37/0x50
[177558.345646] [<ffffffff8113c2bf>] __jump_label_update+0x5f/0x80
[177558.352446] [<ffffffff8113c37d>] jump_label_update+0x9d/0xb0
[177558.359049] [<ffffffff8113c58d>] __static_key_slow_dec+0x4d/0xb0
[177558.366044] [<ffffffff8113c646>] jump_label_update_timeout+0x16/0x20
[177558.373436] [<ffffffff81082185>] process_one_work+0x175/0x430
[177558.380137] [<ffffffff81082dab>] worker_thread+0x11b/0x3a0
[177558.386544] [<ffffffff81082c90>] ? rescuer_thread+0x340/0x340
[177558.393245] [<ffffffff810897a0>] kthread+0xc0/0xd0
[177558.398866] [<ffffffff810896e0>] ? insert_kthread_work+0x40/0x40
[177558.405862] [<ffffffff816662bc>] ret_from_fork+0x7c/0xb0
[177558.412070] [<ffffffff810896e0>] ? insert_kthread_work+0x40/0x40
[177558.419066] Code: 3b 05 af 44 c2 00 89 c2 0f 8d 35 fe ff ff 48 98
49 8b 4d 00 48 03 0c c5 e0 fb ce 81 f6 41 20 01 74 cb 0f 1f 00 f3 90
f6 41 20 01 <75> f8 eb be 0f b6 4d ac 48 8b 55 b8 44 89 ef 48 8b 75 c0
e8 fa
[177586.007771] BUG: soft lockup - CPU#0 stuck for 22s! [kworker/0:2:6155]
[177586.015259] Modules linked in: vhost_net vhost macvtap macvlan
kvm_intel kvm ebtable_nat xt_CHECKSUM tun nf_conntrack_netbios_ns
nf_conntrack_broadcast ipt_MASQUERADE ip6table_nat nf_nat_ipv6
ip6table_mangle ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6
iptable_nat nf_nat_ipv4 nf_nat iptable_mangle nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack ebtable_filter ebtables
ip6table_filter ip6_tables bridge stp llc snd_hda_codec_realtek
snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hwdep snd_seq
snd_seq_device snd_pcm snd_page_alloc iwlwifi snd_timer snd cfg80211
e1000e iTCO_wdt iTCO_vendor_support mei_me lpc_ich mfd_core soundcore
ptp mei pps_core serio_raw pcspkr rfkill i2c_i801 binfmt_misc i915
i2c_algo_bit drm_kms_helper drm i2c_core video
[177586.091590] CPU: 0 PID: 6155 Comm: kworker/0:2 Tainted: G D W
3.12.0-rc2+ #7
[177586.100456] Hardware name: Intel Corporation Shark Bay Client
platform/Flathead Creek Crb, BIOS HSWLPTU1.86C.0131.R03.1307262359
07/26/2013
[177586.114733] Workqueue: events jump_label_update_timeout
[177586.120755] task: ffff8804379d5dc0 ti: ffff88007c8a8000 task.ti:
ffff88007c8a8000
[177586.129325] RIP: 0010:[<ffffffff810cdf5e>] [<ffffffff810cdf5e>]
smp_call_function_many+0x25e/0x2c0
[177586.139678] RSP: 0018:ffff88007c8a9c68 EFLAGS: 00000202
[177586.145789] RAX: 0000000000000003 RBX: 0000000000000000 RCX:
ffff88044e2d73e8
[177586.153965] RDX: 0000000000000003 RSI: 0000000000000080 RDI:
0000000000000000
[177586.162140] RBP: ffff88007c8a9cc8 R08: ffff88044e214c88 R09:
0000000000000002
[177586.170317] R10: ffff88044e214c88 R11: 0000000000001f17 R12:
000000000000dd50
[177586.178492] R13: 000000fc00000000 R14: 0000000000000286 R15:
0000000000000286
[177586.186669] FS: 0000000000000000(0000) GS:ffff88044e200000(0000)
knlGS:0000000000000000
[177586.195926] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[177586.202527] CR2: 00007fd4757f6000 CR3: 0000000001c0c000 CR4:
00000000001427e0
[177586.210703] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[177586.218879] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[177586.227054] Stack:
[177586.229425] ffff88044e214c98 0000000181050e73 0000000000014c40
0000000000000000
[177586.237932] ffffffff81018be0 ffff88044e2d4c40 0000000000000202
ffffffffa040e705
[177586.246440] ffffffff81018be0 0000000000000000 ffffffffa040e706
ffffffffa042d560
[177586.254950] Call Trace:
[177586.257813] [<ffffffff81018be0>] ? setup_data_read+0x90/0x90
[177586.264420] [<ffffffffa040e705>] ? apic_has_pending_timer+0x15/0x90 [kvm]
[177586.272301] [<ffffffff81018be0>] ? setup_data_read+0x90/0x90
[177586.278909] [<ffffffffa040e706>] ? apic_has_pending_timer+0x16/0x90 [kvm]
[177586.286790] [<ffffffff810ce0fd>] on_each_cpu+0x2d/0x60
[177586.292804] [<ffffffffa040e705>] ? apic_has_pending_timer+0x15/0x90 [kvm]
[177586.300686] [<ffffffff8101938b>] text_poke_bp+0x5b/0xc0
[177586.306800] [<ffffffffa040e705>] ? apic_has_pending_timer+0x15/0x90 [kvm]
[177586.314682] [<ffffffff81016912>] __jump_label_transform.isra.0+0x112/0x140
[177586.322661] [<ffffffff81016977>] arch_jump_label_transform+0x37/0x50
[177586.330052] [<ffffffff8113c2bf>] __jump_label_update+0x5f/0x80
[177586.336852] [<ffffffff8113c37d>] jump_label_update+0x9d/0xb0
[177586.343454] [<ffffffff8113c58d>] __static_key_slow_dec+0x4d/0xb0
[177586.350450] [<ffffffff8113c646>] jump_label_update_timeout+0x16/0x20
[177586.357839] [<ffffffff81082185>] process_one_work+0x175/0x430
[177586.364540] [<ffffffff81082dab>] worker_thread+0x11b/0x3a0
[177586.370947] [<ffffffff81082c90>] ? rescuer_thread+0x340/0x340
[177586.377649] [<ffffffff810897a0>] kthread+0xc0/0xd0
[177586.383269] [<ffffffff810896e0>] ? insert_kthread_work+0x40/0x40
[177586.390265] [<ffffffff816662bc>] ret_from_fork+0x7c/0xb0
[177586.396475] [<ffffffff810896e0>] ? insert_kthread_work+0x40/0x40
[177586.403469] Code: 3b 05 af 44 c2 00 89 c2 0f 8d 35 fe ff ff 48 98
49 8b 4d 00 48 03 0c c5 e0 fb ce 81 f6 41 20 01 74 cb 0f 1f 00 f3 90
f6 41 20 01 <75> f8 eb be 0f b6 4d ac 48 8b 55 b8 44 89 ef 48 8b 75 c0
e8 fa
[177611.874722] ------------[ cut here ]------------
[177611.880048] WARNING: CPU: 0 PID: 6155 at kernel/watchdog.c:245
watchdog_overflow_callback+0x9c/0xd0()
[177611.890586] Watchdog detected hard LOCKUP on cpu 0
[177611.895909] Modules linked in: vhost_net vhost macvtap macvlan
kvm_intel kvm ebtable_nat xt_CHECKSUM tun nf_conntrack_netbios_ns
nf_conntrack_broadcast ipt_MASQUERADE ip6table_nat nf_nat_ipv6
ip6table_mangle ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6
iptable_nat nf_nat_ipv4 nf_nat iptable_mangle nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack ebtable_filter ebtables
ip6table_filter ip6_tables bridge stp llc snd_hda_codec_realtek
snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hwdep snd_seq
snd_seq_device snd_pcm snd_page_alloc iwlwifi snd_timer snd cfg80211
e1000e iTCO_wdt iTCO_vendor_support mei_me lpc_ich mfd_core soundcore
ptp mei pps_core serio_raw pcspkr rfkill i2c_i801 binfmt_misc i915
i2c_algo_bit drm_kms_helper drm i2c_core video
[177611.972448] CPU: 0 PID: 6155 Comm: kworker/0:2 Tainted: G D W
3.12.0-rc2+ #7
[177611.981312] Hardware name: Intel Corporation Shark Bay Client
platform/Flathead Creek Crb, BIOS HSWLPTU1.86C.0131.R03.1307262359
07/26/2013
[177611.995589] Workqueue: events jump_label_update_timeout
[177612.001609] 0000000000000009 ffff88044e206c28 ffffffff816573b5
ffff88044e206c70
[177612.010120] ffff88044e206c60 ffffffff810680ad ffff88043d822000
0000000000000000
[177612.018622] ffff88044e206d90 0000000000000000 ffff88044e206ef8
ffff88044e206cc0
[177612.027134] Call Trace:
[177612.029997] <NMI> [<ffffffff816573b5>] dump_stack+0x45/0x56
[177612.036620] [<ffffffff810680ad>] warn_slowpath_common+0x7d/0xa0
[177612.043519] [<ffffffff8106811c>] warn_slowpath_fmt+0x4c/0x50
[177612.050122] [<ffffffff81016b6b>] ? arch_irq_work_raise+0x3b/0x40
[177612.057117] [<ffffffff810fc660>] ?
watchdog_enable_all_cpus.part.2+0x40/0x40
[177612.065292] [<ffffffff810fc6fc>] watchdog_overflow_callback+0x9c/0xd0
[177612.072781] [<ffffffff8113470e>] __perf_event_overflow+0x8e/0x220
[177612.079875] [<ffffffff81135284>] perf_event_overflow+0x14/0x20
[177612.086676] [<ffffffff8102de2d>] intel_pmu_handle_irq+0x1bd/0x3c0
[177612.093772] [<ffffffff8165f9db>] perf_event_nmi_handler+0x2b/0x50
[177612.100866] [<ffffffff8165f228>] nmi_handle.isra.3+0x88/0x180
[177612.107567] [<ffffffff8165f3f0>] do_nmi+0xd0/0x310
[177612.113186] [<ffffffff8165e841>] end_repeat_nmi+0x1e/0x2e
[177612.119494] [<ffffffff81548cb7>] ? kfree_skbmem+0x37/0x90
[177612.125801] [<ffffffff810bfa10>] ? __getnstimeofday+0x80/0xc0
[177612.132502] [<ffffffff810bfa10>] ? __getnstimeofday+0x80/0xc0
[177612.139204] [<ffffffff810bfa10>] ? __getnstimeofday+0x80/0xc0
[177612.145903] <<EOE>> <IRQ> [<ffffffff810bfa5e>] getnstimeofday+0xe/0x30
[177612.153713] [<ffffffff810bfae6>] ktime_get_real+0x16/0x50
[177612.160022] [<ffffffff81559e86>] netif_receive_skb+0x56/0xb0
[177612.166623] [<ffffffff8155a840>] napi_gro_receive+0x80/0xb0
[177612.173134] [<ffffffffa019d75f>] e1000_receive_skb+0x7f/0xe0 [e1000e]
[177612.180625] [<ffffffffa019ecfa>] e1000_clean_rx_irq+0x24a/0x400 [e1000e]
[177612.188413] [<ffffffffa01a688d>] e1000e_poll+0x6d/0x310 [e1000e]
[177612.195412] [<ffffffff8155a1d9>] net_rx_action+0x149/0x240
[177612.201818] [<ffffffff8106d3f7>] __do_softirq+0xf7/0x240
[177612.208029] [<ffffffff8106d6d5>] irq_exit+0xb5/0xc0
[177612.213748] [<ffffffff81668516>] do_IRQ+0x56/0xc0
[177612.219268] [<ffffffff8165e1ed>] common_interrupt+0x6d/0x6d
[177612.225773] <EOI> [<ffffffff810cdf5e>] ?
smp_call_function_many+0x25e/0x2c0
[177612.233965] [<ffffffff810cdf33>] ? smp_call_function_many+0x233/0x2c0
[177612.241453] [<ffffffff81018be0>] ? setup_data_read+0x90/0x90
[177612.248060] [<ffffffffa040e705>] ? apic_has_pending_timer+0x15/0x90 [kvm]
[177612.255942] [<ffffffff81018be0>] ? setup_data_read+0x90/0x90
[177612.262547] [<ffffffffa040e706>] ? apic_has_pending_timer+0x16/0x90 [kvm]
[177612.270428] [<ffffffff810ce0fd>] on_each_cpu+0x2d/0x60
[177612.276444] [<ffffffffa040e705>] ? apic_has_pending_timer+0x15/0x90 [kvm]
[177612.284326] [<ffffffff8101938b>] text_poke_bp+0x5b/0xc0
[177612.290438] [<ffffffffa040e705>] ? apic_has_pending_timer+0x15/0x90 [kvm]
[177612.298319] [<ffffffff81016912>] __jump_label_transform.isra.0+0x112/0x140
[177612.306300] [<ffffffff81016977>] arch_jump_label_transform+0x37/0x50
[177612.313691] [<ffffffff8113c2bf>] __jump_label_update+0x5f/0x80
[177612.320491] [<ffffffff8113c37d>] jump_label_update+0x9d/0xb0
[177612.327095] [<ffffffff8113c58d>] __static_key_slow_dec+0x4d/0xb0
[177612.334090] [<ffffffff8113c646>] jump_label_update_timeout+0x16/0x20
[177612.341480] [<ffffffff81082185>] process_one_work+0x175/0x430
[177612.348181] [<ffffffff81082dab>] worker_thread+0x11b/0x3a0
[177612.354587] [<ffffffff81082c90>] ? rescuer_thread+0x340/0x340
[177612.361288] [<ffffffff810897a0>] kthread+0xc0/0xd0
[177612.366908] [<ffffffff810896e0>] ? insert_kthread_work+0x40/0x40
[177612.373903] [<ffffffff816662bc>] ret_from_fork+0x7c/0xb0
[177612.380114] [<ffffffff810896e0>] ? insert_kthread_work+0x40/0x40
[177612.387108] ---[ end trace a7ec0517b6c78b3a ]---
[177612.392434] INFO: NMI handler (perf_event_nmi_handler) took too
long to run: 517.710 msecs
==================================
/kashyap
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