Date:	Mon, 30 Aug 2010 19:38:53 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Avi Kivity <avi@...hat.com>
Subject: Re: [Bug #16961] kernel BUG at arch/x86/kvm/../../../virt/kvm/kvm_main.c:1978

On Monday, August 30, 2010, Sergey Senozhatsky wrote:
> On (08/30/10 00:36), Rafael J. Wysocki wrote:
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16961
> > Subject		: kernel BUG at arch/x86/kvm/../../../virt/kvm/kvm_main.c:1978
> > Submitter	: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
> > Date		: 2010-08-19 9:54 (11 days old)
> > Message-ID	: <20100819095429.GA5201@...rdfish.minsk.epam.com>
> > References	: http://marc.info/?l=linux-kernel&m=128221169606214&w=2
> > Handled-By	: Avi Kivity <avi@...hat.com>
> > 
> 
> Hello,
> .36-rc3

I take this as "still present".

You've sent the stack traces once, there's no need to do that again and again
(unless something has changed substantially).

Thanks,
Rafael


> [ 2913.218767] kvm: disabling virtualization on CPU1
> [ 2913.219078] CPU 1 is now offline
> [ 2913.221758] lockdep: fixing up alternatives.
> [ 2913.221814] Booting Node 0 Processor 1 APIC 0x1
> [ 2913.363980] ------------[ cut here ]------------
> [ 2913.364042] kernel BUG at arch/x86/kvm/../../../virt/kvm/kvm_main.c:1978!
> [ 2913.364107] invalid opcode: 0000 [#1] PREEMPT SMP 
> [ 2913.364173] last sysfs file: /sys/devices/system/cpu/cpu1/online
> [ 2913.364262] CPU 1 
> [ 2913.364285] Modules linked in: kvm_intel kvm ipv6 ac battery snd_seq_dummy snd_seq_oss snd_seq_midi_event wmi snd_seq snd_seq_device snd_hda_codec_atihdmi button snd_hda_codec_realtek psmouse serio_raw snd_hda_intel snd_hda_codec
> snd_hwdep snd_pcm_oss snd_pcm broadcom snd_timer usbhid hid tg3 libphy snd_page_alloc evdev snd_mixer_oss snd soundcore ehci_hcd sr_mod usbcore cdrom sd_mod ahci libahci
> [ 2913.364784] 
> [ 2913.364805] Pid: 5912, comm: qemu-kvm Not tainted 2.6.36-rc3-dbg-00144-gb958348-dirty #144 Aspire 5741G    /Aspire 5741G    
> [ 2913.364965] RIP: 0010:[<ffffffffa0223446>]  [<ffffffffa0223446>] kvm_handle_fault_on_reboot+0xf/0x11 [kvm]
> [ 2913.365073] RSP: 0000:ffff880150b87b18  EFLAGS: 00010246
> [ 2913.365128] RAX: ffff880150b87b40 RBX: ffff8801534fc000 RCX: ffff880154e75000
> [ 2913.365225] RDX: ffff880002640000 RSI: ffff880154e4e638 RDI: ffff880154e75000
> [ 2913.365292] RBP: ffff880150b87b18 R08: 0000000000000001 R09: 000000000000039c
> [ 2913.365357] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
> [ 2913.365422] R13: ffff880154e75000 R14: ffff880154e4df10 R15: 0000000000000000
> [ 2913.365489] FS:  00007f23062c6710(0000) GS:ffff880002640000(0000) knlGS:0000000000000000
> [ 2913.365563] CS:  0010 DS: 002b ES: 002b CR0: 000000008005003b
> [ 2913.365617] CR2: 0000000000000000 CR3: 000000015544d000 CR4: 00000000000006e0
> [ 2913.365682] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 2913.365747] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [ 2913.365813] Process qemu-kvm (pid: 5912, threadinfo ffff880150b86000, task ffff880154e4df10)
> [ 2913.365929] Stack:
> [ 2913.365953]  ffff880150b87b68 ffffffffa02660a2 ffff880150b87b58 ffffffff81063240
> [ 2913.366034] <0> ffff880154e4df10 0000000154e75000 ffff880157d55f10 ffff8801534fc000
> [ 2913.366132] <0> 0000000000000001 0000000000014200 ffff880150b87b98 ffffffffa022c4cc
> [ 2913.366255] Call Trace:
> [ 2913.366288]  [<ffffffffa02660a2>] vmx_vcpu_load+0x90/0x1a0 [kvm_intel]
> [ 2913.366355]  [<ffffffff81063240>] ? mark_held_locks+0x50/0x72
> [ 2913.366422]  [<ffffffffa022c4cc>] kvm_arch_vcpu_load+0x73/0xbb [kvm]
> [ 2913.366490]  [<ffffffffa0223cd8>] kvm_sched_in+0xd/0xf [kvm]
> [ 2913.366547]  [<ffffffff8102e0d2>] finish_task_switch+0x90/0xd7
> [ 2913.366604]  [<ffffffff8102e042>] ? finish_task_switch+0x0/0xd7
> [ 2913.366663]  [<ffffffff81401149>] schedule+0x81d/0x8f2
> [ 2913.366715]  [<ffffffff81063240>] ? mark_held_locks+0x50/0x72
> [ 2913.366781]  [<ffffffffa023e838>] ? kvm_cpu_has_interrupt+0x3a/0x56 [kvm]
> [ 2913.366876]  [<ffffffffa0226057>] kvm_vcpu_block+0x8e/0xa9 [kvm]
> [ 2913.366956]  [<ffffffff810530d5>] ? autoremove_wake_function+0x0/0x34
> [ 2913.367029]  [<ffffffffa023125a>] kvm_arch_vcpu_ioctl_run+0x97d/0xc9f [kvm]
> [ 2913.367104]  [<ffffffffa0231177>] ? kvm_arch_vcpu_ioctl_run+0x89a/0xc9f [kvm]
> [ 2913.367210]  [<ffffffff814026a5>] ? __mutex_unlock_slowpath+0x111/0x13d
> [ 2913.367276]  [<ffffffff810346ec>] ? sub_preempt_count+0x92/0xa5
> [ 2913.367341]  [<ffffffffa0225164>] kvm_vcpu_ioctl+0x113/0x4e9 [kvm]
> [ 2913.367401]  [<ffffffff814011cf>] ? schedule+0x8a3/0x8f2
> [ 2913.367458]  [<ffffffff810e98c3>] do_vfs_ioctl+0x4c1/0x502
> [ 2913.367515]  [<ffffffff810dcffc>] ? fget_light+0xe0/0xf8
> [ 2913.367568]  [<ffffffff810dcf6e>] ? fget_light+0x52/0xf8
> [ 2913.369987]  [<ffffffff810e9955>] sys_ioctl+0x51/0x74
> [ 2913.372394]  [<ffffffff81002002>] system_call_fastpath+0x16/0x1b
> [ 2913.374739] Code: 2f 02 00 85 c0 75 13 ba 01 00 00 00 31 f6 48 c7 c7 bb 37 22 a0 e8 76 ce e1 e0 c9 c3 55 80 3d 79 2f 02 00 00 48 89 e5 74 02 eb fe <0f> 0b 55 48 89 e5 53 48 89 f3 48 83 ec 08 48 8b 87 98 00 00 00 
> [ 2913.380357] RIP  [<ffffffffa0223446>] kvm_handle_fault_on_reboot+0xf/0x11 [kvm]
> [ 2913.383084]  RSP <ffff880150b87b18>
> [ 2913.397343] ---[ end trace 9564e615f538c7b1 ]---
> [ 2913.399336] kvm: enabling virtualization on CPU1
> [ 2913.402446] note: qemu-kvm[5912] exited with preempt_count 1
> [ 2913.404860] NMI watchdog enabled, takes one hw-pmu counter.
> [ 2913.404918] vmwrite error: reg 6c0a value ffff880002650dc0 (err 40177088)
> [ 2913.404924] Pid: 5912, comm: qemu-kvm Tainted: G      D     2.6.36-rc3-dbg-00144-gb958348-dirty #144
> [ 2913.404928] Call Trace:
> [ 2913.404937]  [<ffffffffa0263ad5>] vmwrite_error+0x32/0x37 [kvm_intel]
> [ 2913.404944]  [<ffffffffa0263af3>] vmcs_writel+0x19/0x1b [kvm_intel]
> [ 2913.404951]  [<ffffffffa0266147>] vmx_vcpu_load+0x135/0x1a0 [kvm_intel]
> [ 2913.404958]  [<ffffffff8102e042>] ? finish_task_switch+0x0/0xd7
> [ 2913.404974]  [<ffffffffa022c4cc>] kvm_arch_vcpu_load+0x73/0xbb [kvm]
> [ 2913.404985]  [<ffffffffa0223cd8>] kvm_sched_in+0xd/0xf [kvm]
> [ 2913.404990]  [<ffffffff8102e0d2>] finish_task_switch+0x90/0xd7
> [ 2913.404995]  [<ffffffff8102e042>] ? finish_task_switch+0x0/0xd7
> [ 2913.405002]  [<ffffffff81401149>] schedule+0x81d/0x8f2
> [ 2913.405010]  [<ffffffff811f7c25>] ? do_raw_spin_unlock+0x8f/0x98
> [ 2913.405016]  [<ffffffff810363d7>] __cond_resched+0x13/0x1f
> [ 2913.405022]  [<ffffffff8103645f>] __cond_resched_lock+0x7c/0x96
> [ 2913.405028]  [<ffffffff810ebc4b>] ? __shrink_dcache_sb+0x253/0x2da
> [ 2913.405034]  [<ffffffff810eb9f0>] ? d_kill+0x64/0x6c
> [ 2913.405039]  [<ffffffff810ebc5c>] __shrink_dcache_sb+0x264/0x2da
> [ 2913.405046]  [<ffffffff810ec34b>] shrink_dcache_parent+0x37/0x136
> [ 2913.405053]  [<ffffffff811287de>] proc_flush_task+0xb2/0x2b2
> [ 2913.405060]  [<ffffffff8103d26d>] release_task+0x7f/0x3ec
> [ 2913.405066]  [<ffffffff8103d20e>] ? release_task+0x20/0x3ec
> [ 2913.405071]  [<ffffffff8103eb9e>] do_exit+0x659/0x6c4
> [ 2913.405079]  [<ffffffff810060b6>] oops_end+0x97/0x9c
> [ 2913.405084]  [<ffffffff810061f8>] die+0x55/0x5e
> [ 2913.405089]  [<ffffffff810030c4>] do_trap+0x11c/0x12b
> [ 2913.405094]  [<ffffffff810032c4>] ? do_invalid_op+0x72/0xa5
> [ 2913.405102]  [<ffffffff810032ee>] do_invalid_op+0x9c/0xa5
> [ 2913.405119]  [<ffffffffa0223446>] ? kvm_handle_fault_on_reboot+0xf/0x11 [kvm]
> [ 2913.405130]  [<ffffffff81403601>] ? trace_hardirqs_off_thunk+0x3a/0x3c
> [ 2913.405139]  [<ffffffff81404544>] ? irq_return+0x0/0xc
> [ 2913.405149]  [<ffffffff81002d1b>] invalid_op+0x1b/0x20
> [ 2913.405166]  [<ffffffffa0223446>] ? kvm_handle_fault_on_reboot+0xf/0x11 [kvm]
> [ 2913.405181]  [<ffffffffa02660a2>] vmx_vcpu_load+0x90/0x1a0 [kvm_intel]
> [ 2913.405189]  [<ffffffff81063240>] ? mark_held_locks+0x50/0x72
> [ 2913.405204]  [<ffffffffa022c4cc>] kvm_arch_vcpu_load+0x73/0xbb [kvm]
> [ 2913.405215]  [<ffffffffa0223cd8>] kvm_sched_in+0xd/0xf [kvm]
> [ 2913.405221]  [<ffffffff8102e0d2>] finish_task_switch+0x90/0xd7
> [ 2913.405227]  [<ffffffff8102e042>] ? finish_task_switch+0x0/0xd7
> [ 2913.405234]  [<ffffffff81401149>] schedule+0x81d/0x8f2
> [ 2913.405240]  [<ffffffff81063240>] ? mark_held_locks+0x50/0x72
> [ 2913.405255]  [<ffffffffa023e838>] ? kvm_cpu_has_interrupt+0x3a/0x56 [kvm]
> [ 2913.405269]  [<ffffffffa0226057>] kvm_vcpu_block+0x8e/0xa9 [kvm]
> [ 2913.405276]  [<ffffffff810530d5>] ? autoremove_wake_function+0x0/0x34
> [ 2913.405292]  [<ffffffffa023125a>] kvm_arch_vcpu_ioctl_run+0x97d/0xc9f [kvm]
> [ 2913.405306]  [<ffffffffa0231177>] ? kvm_arch_vcpu_ioctl_run+0x89a/0xc9f [kvm]
> [ 2913.405313]  [<ffffffff814026a5>] ? __mutex_unlock_slowpath+0x111/0x13d
> [ 2913.405321]  [<ffffffff810346ec>] ? sub_preempt_count+0x92/0xa5
> [ 2913.405334]  [<ffffffffa0225164>] kvm_vcpu_ioctl+0x113/0x4e9 [kvm]
> [ 2913.405341]  [<ffffffff814011cf>] ? schedule+0x8a3/0x8f2
> [ 2913.405348]  [<ffffffff810e98c3>] do_vfs_ioctl+0x4c1/0x502
> [ 2913.405354]  [<ffffffff810dcffc>] ? fget_light+0xe0/0xf8
> [ 2913.405360]  [<ffffffff810dcf6e>] ? fget_light+0x52/0xf8
> [ 2913.405366]  [<ffffffff810e9955>] sys_ioctl+0x51/0x74
> [ 2913.405373]  [<ffffffff81002002>] system_call_fastpath+0x16/0x1b
> [ 2913.405378] vmwrite error: reg 6c0c value ffff880002644000 (err 40124416)
> [ 2913.405384] Pid: 5912, comm: qemu-kvm Tainted: G      D     2.6.36-rc3-dbg-00144-gb958348-dirty #144
> [ 2913.405388] Call Trace:
> [ 2913.405395]  [<ffffffffa0263ad5>] vmwrite_error+0x32/0x37 [kvm_intel]
> [ 2913.405402]  [<ffffffffa0263af3>] vmcs_writel+0x19/0x1b [kvm_intel]
> [ 2913.405410]  [<ffffffffa0266159>] vmx_vcpu_load+0x147/0x1a0 [kvm_intel]
> [ 2913.405417]  [<ffffffff8102e042>] ? finish_task_switch+0x0/0xd7
> [ 2913.405432]  [<ffffffffa022c4cc>] kvm_arch_vcpu_load+0x73/0xbb [kvm]
> [ 2913.405444]  [<ffffffffa0223cd8>] kvm_sched_in+0xd/0xf [kvm]
> [ 2913.405450]  [<ffffffff8102e0d2>] finish_task_switch+0x90/0xd7
> [ 2913.405455]  [<ffffffff8102e042>] ? finish_task_switch+0x0/0xd7
> [ 2913.405461]  [<ffffffff81401149>] schedule+0x81d/0x8f2
> [ 2913.405469]  [<ffffffff811f7c25>] ? do_raw_spin_unlock+0x8f/0x98
> [ 2913.405475]  [<ffffffff810363d7>] __cond_resched+0x13/0x1f
> [ 2913.405482]  [<ffffffff8103645f>] __cond_resched_lock+0x7c/0x96
> [ 2913.405489]  [<ffffffff810ebc4b>] ? __shrink_dcache_sb+0x253/0x2da
> [ 2913.405495]  [<ffffffff810eb9f0>] ? d_kill+0x64/0x6c
> [ 2913.405501]  [<ffffffff810ebc5c>] __shrink_dcache_sb+0x264/0x2da
> [ 2913.405508]  [<ffffffff810ec34b>] shrink_dcache_parent+0x37/0x136
> [ 2913.405515]  [<ffffffff811287de>] proc_flush_task+0xb2/0x2b2
> [ 2913.405522]  [<ffffffff8103d26d>] release_task+0x7f/0x3ec
> [ 2913.405528]  [<ffffffff8103d20e>] ? release_task+0x20/0x3ec
> [ 2913.405534]  [<ffffffff8103eb9e>] do_exit+0x659/0x6c4
> [ 2913.405540]  [<ffffffff810060b6>] oops_end+0x97/0x9c
> [ 2913.405545]  [<ffffffff810061f8>] die+0x55/0x5e
> [ 2913.405550]  [<ffffffff810030c4>] do_trap+0x11c/0x12b
> [ 2913.405556]  [<ffffffff810032c4>] ? do_invalid_op+0x72/0xa5
> [ 2913.405561]  [<ffffffff810032ee>] do_invalid_op+0x9c/0xa5
> [ 2913.405572]  [<ffffffffa0223446>] ? kvm_handle_fault_on_reboot+0xf/0x11 [kvm]
> [ 2913.405580]  [<ffffffff81403601>] ? trace_hardirqs_off_thunk+0x3a/0x3c
> [ 2913.405586]  [<ffffffff81404544>] ? irq_return+0x0/0xc
> [ 2913.405592]  [<ffffffff81002d1b>] invalid_op+0x1b/0x20
> [ 2913.405603]  [<ffffffffa0223446>] ? kvm_handle_fault_on_reboot+0xf/0x11 [kvm]
> [ 2913.405612]  [<ffffffffa02660a2>] vmx_vcpu_load+0x90/0x1a0 [kvm_intel]
> [ 2913.405618]  [<ffffffff81063240>] ? mark_held_locks+0x50/0x72
> [ 2913.405634]  [<ffffffffa022c4cc>] kvm_arch_vcpu_load+0x73/0xbb [kvm]
> [ 2913.405645]  [<ffffffffa0223cd8>] kvm_sched_in+0xd/0xf [kvm]
> [ 2913.405651]  [<ffffffff8102e0d2>] finish_task_switch+0x90/0xd7
> [ 2913.405657]  [<ffffffff8102e042>] ? finish_task_switch+0x0/0xd7
> [ 2913.405664]  [<ffffffff81401149>] schedule+0x81d/0x8f2
> [ 2913.405670]  [<ffffffff81063240>] ? mark_held_locks+0x50/0x72
> [ 2913.405686]  [<ffffffffa023e838>] ? kvm_cpu_has_interrupt+0x3a/0x56 [kvm]
> [ 2913.405699]  [<ffffffffa0226057>] kvm_vcpu_block+0x8e/0xa9 [kvm]
> [ 2913.405706]  [<ffffffff810530d5>] ? autoremove_wake_function+0x0/0x34
> [ 2913.405721]  [<ffffffffa023125a>] kvm_arch_vcpu_ioctl_run+0x97d/0xc9f [kvm]
> [ 2913.405736]  [<ffffffffa0231177>] ? kvm_arch_vcpu_ioctl_run+0x89a/0xc9f [kvm]
> [ 2913.405743]  [<ffffffff814026a5>] ? __mutex_unlock_slowpath+0x111/0x13d
> [ 2913.405750]  [<ffffffff810346ec>] ? sub_preempt_count+0x92/0xa5
> [ 2913.405764]  [<ffffffffa0225164>] kvm_vcpu_ioctl+0x113/0x4e9 [kvm]
> [ 2913.405773]  [<ffffffff814011cf>] ? schedule+0x8a3/0x8f2
> [ 2913.405784]  [<ffffffff810e98c3>] do_vfs_ioctl+0x4c1/0x502
> [ 2913.405793]  [<ffffffff810dcffc>] ? fget_light+0xe0/0xf8
> [ 2913.405802]  [<ffffffff810dcf6e>] ? fget_light+0x52/0xf8
> [ 2913.405810]  [<ffffffff810e9955>] sys_ioctl+0x51/0x74
> [ 2913.405819]  [<ffffffff81002002>] system_call_fastpath+0x16/0x1b
> [ 2913.405828] vmwrite error: reg 6c10 value 0 (err 0)
> [ 2913.405834] Pid: 5912, comm: qemu-kvm Tainted: G      D     2.6.36-rc3-dbg-00144-gb958348-dirty #144
> [ 2913.405839] Call Trace:
> [ 2913.405849]  [<ffffffffa0263ad5>] vmwrite_error+0x32/0x37 [kvm_intel]
> [ 2913.405861]  [<ffffffffa0263af3>] vmcs_writel+0x19/0x1b [kvm_intel]
> [ 2913.405873]  [<ffffffffa0266176>] vmx_vcpu_load+0x164/0x1a0 [kvm_intel]
> [ 2913.405895]  [<ffffffffa022c4cc>] kvm_arch_vcpu_load+0x73/0xbb [kvm]
> [ 2913.405907]  [<ffffffffa0223cd8>] kvm_sched_in+0xd/0xf [kvm]
> [ 2913.405915]  [<ffffffff8102e0d2>] finish_task_switch+0x90/0xd7
> [ 2913.405921]  [<ffffffff8102e042>] ? finish_task_switch+0x0/0xd7
> [ 2913.405927]  [<ffffffff81401149>] schedule+0x81d/0x8f2
> [ 2913.405934]  [<ffffffff811f7c25>] ? do_raw_spin_unlock+0x8f/0x98
> [ 2913.405941]  [<ffffffff810363d7>] __cond_resched+0x13/0x1f
> [ 2913.405948]  [<ffffffff8103645f>] __cond_resched_lock+0x7c/0x96
> [ 2913.405955]  [<ffffffff810ebc4b>] ? __shrink_dcache_sb+0x253/0x2da
> [ 2913.405961]  [<ffffffff810eb9f0>] ? d_kill+0x64/0x6c
> [ 2913.405967]  [<ffffffff810ebc5c>] __shrink_dcache_sb+0x264/0x2da
> [ 2913.405973]  [<ffffffff810ec34b>] shrink_dcache_parent+0x37/0x136
> [ 2913.405980]  [<ffffffff811287de>] proc_flush_task+0xb2/0x2b2
> [ 2913.405986]  [<ffffffff8103d26d>] release_task+0x7f/0x3ec
> [ 2913.405992]  [<ffffffff8103d20e>] ? release_task+0x20/0x3ec
> [ 2913.405998]  [<ffffffff8103eb9e>] do_exit+0x659/0x6c4
> [ 2913.406004]  [<ffffffff810060b6>] oops_end+0x97/0x9c
> [ 2913.406009]  [<ffffffff810061f8>] die+0x55/0x5e
> [ 2913.406014]  [<ffffffff810030c4>] do_trap+0x11c/0x12b
> [ 2913.406019]  [<ffffffff810032c4>] ? do_invalid_op+0x72/0xa5
> [ 2913.406026]  [<ffffffff810032ee>] do_invalid_op+0x9c/0xa5
> [ 2913.406036]  [<ffffffffa0223446>] ? kvm_handle_fault_on_reboot+0xf/0x11 [kvm]
> [ 2913.406043]  [<ffffffff81403601>] ? trace_hardirqs_off_thunk+0x3a/0x3c
> [ 2913.406050]  [<ffffffff81404544>] ? irq_return+0x0/0xc
> [ 2913.406058]  [<ffffffff81002d1b>] invalid_op+0x1b/0x20
> [ 2913.406076]  [<ffffffffa0223446>] ? kvm_handle_fault_on_reboot+0xf/0x11 [kvm]
> [ 2913.406089]  [<ffffffffa02660a2>] vmx_vcpu_load+0x90/0x1a0 [kvm_intel]
> [ 2913.406098]  [<ffffffff81063240>] ? mark_held_locks+0x50/0x72
> [ 2913.406121]  [<ffffffffa022c4cc>] kvm_arch_vcpu_load+0x73/0xbb [kvm]
> [ 2913.406136]  [<ffffffffa0223cd8>] kvm_sched_in+0xd/0xf [kvm]
> [ 2913.406142]  [<ffffffff8102e0d2>] finish_task_switch+0x90/0xd7
> [ 2913.406147]  [<ffffffff8102e042>] ? finish_task_switch+0x0/0xd7
> [ 2913.406153]  [<ffffffff81401149>] schedule+0x81d/0x8f2
> [ 2913.406158]  [<ffffffff81063240>] ? mark_held_locks+0x50/0x72
> [ 2913.406173]  [<ffffffffa023e838>] ? kvm_cpu_has_interrupt+0x3a/0x56 [kvm]
> [ 2913.406186]  [<ffffffffa0226057>] kvm_vcpu_block+0x8e/0xa9 [kvm]
> [ 2913.406191]  [<ffffffff810530d5>] ? autoremove_wake_function+0x0/0x34
> [ 2913.406206]  [<ffffffffa023125a>] kvm_arch_vcpu_ioctl_run+0x97d/0xc9f [kvm]
> [ 2913.406220]  [<ffffffffa0231177>] ? kvm_arch_vcpu_ioctl_run+0x89a/0xc9f [kvm]
> [ 2913.406226]  [<ffffffff814026a5>] ? __mutex_unlock_slowpath+0x111/0x13d
> [ 2913.406233]  [<ffffffff810346ec>] ? sub_preempt_count+0x92/0xa5
> [ 2913.406245]  [<ffffffffa0225164>] kvm_vcpu_ioctl+0x113/0x4e9 [kvm]
> [ 2913.406250]  [<ffffffff814011cf>] ? schedule+0x8a3/0x8f2
> [ 2913.406257]  [<ffffffff810e98c3>] do_vfs_ioctl+0x4c1/0x502
> [ 2913.406262]  [<ffffffff810dcffc>] ? fget_light+0xe0/0xf8
> [ 2913.406267]  [<ffffffff810dcf6e>] ? fget_light+0x52/0xf8
> [ 2913.406273]  [<ffffffff810e9955>] sys_ioctl+0x51/0x74
> [ 2913.406279]  [<ffffffff81002002>] system_call_fastpath+0x16/0x1b
> [ 2913.749804] kvm: disabling virtualization on CPU2
> [ 2913.749831] CPU 2 is now offline
> [ 2913.751880] lockdep: fixing up alternatives.
> [ 2913.753457] Booting Node 0 Processor 2 APIC 0x4
> [ 2913.918676] kvm: enabling virtualization on CPU2
> [ 2913.920349] NMI watchdog enabled, takes one hw-pmu counter.
> [ 2913.922404] coretemp coretemp.2: TjMax is 105 C.
> [ 2913.952819] kvm: disabling virtualization on CPU1
> [ 2913.953052] CPU 1 is now offline
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