* [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
@ 2011-05-30 8:40 bugzilla-daemon
2011-05-30 8:48 ` [Bug 36222] " bugzilla-daemon
` (14 more replies)
0 siblings, 15 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 8:40 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
Summary: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
Product: Virtualization
Version: unspecified
Kernel Version: 3.0.0-rc1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: kvm
AssignedTo: virtualization_kvm@kernel-bugs.osdl.org
ReportedBy: edwintorok@gmail.com
Regression: Yes
Created an attachment (id=60022)
--> (https://bugzilla.kernel.org/attachment.cgi?id=60022)
config-3.0.0-rc1
Host is 3.0.0-rc1, guest is 3.0.0-rc1.
After shutting down the guest, KVM on the host uses 100% CPU.
gdb shows for KVM:
6 Thread 0x7f00d1875700 (LWP 32105) 0x0000003e278ce2f7 in ioctl () at
../sysdeps/unix/syscall-template.S:82
5 Thread 0x7f00d1074700 (LWP 32106) 0x0000003e278ce2f7 in ioctl () at
../sysdeps/unix/syscall-template.S:82
4 Thread 0x7f00d0873700 (LWP 32107) 0x0000003e278ce2f7 in ioctl () at
../sysdeps/unix/syscall-template.S:82
3 Thread 0x7f00d0072700 (LWP 32108) 0x0000003e278ce2f7 in ioctl () at
../sysdeps/unix/syscall-template.S:82
2 Thread 0x7f00cf871700 (LWP 32109) 0x0000003e278ce2f7 in ioctl () at
../sysdeps/unix/syscall-template.S:82
* 1 Thread 0x7f00d1e95760 (LWP 32100) 0x0000003e278ceda3 in select () at
../sysdeps/unix/syscall-template.S:82
This seems to be a problem with the 3.0.0-rc1 guest, because if I boot 2.6.39
in the guest (still keeping same 3.0.0-rc1 running on the host), then shutdown
completes normally, no 100% CPU usage loop.
.config for KVM guest attached.
KVM command-line (created by libvirt):
/usr/bin/kvm -S -M pc-0.14 -cpu
phenom,+wdt,+skinit,+osvw,+3dnowprefetch,+misalignsse,+sse4a,+abm,+cr8legacy,+extapic,+cmp_legacy,+lahf_lm,+rdtscp,+pdpe1gb,+popcnt,+cx16,+ht,+vme
-enable-nesting -enable-kvm -m 3072 -smp 5,sockets=5,cores=1,threads=1 -name
debian-enc -uuid 55782a0a-937c-fa7b-8db5-86876d151a08 -nodefconfig -nodefaults
-chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/debian-enc.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=readline -rtc base=utc -boot
order=c,menu=off -drive
file=/var/lib/libvirt/images/debian-enc.img,if=none,id=drive-virtio-disk0,boot=on,format=raw
-device
virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0
-drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device
ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev
tap,fd=18,id=hostnet0,vhost=on,vhostfd=19 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:52:de:54,bus=pci.0,addr=0x3
-chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0
-usb -device usb-tablet,id=input0 -vnc 127.0.0.1:0 -vga cirrus -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6
Bisecting...
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
@ 2011-05-30 8:48 ` bugzilla-daemon
2011-05-30 9:18 ` bugzilla-daemon
` (13 subsequent siblings)
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 8:48 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
Avi Kivity <avi@redhat.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |avi@redhat.com
--- Comment #1 from Avi Kivity <avi@redhat.com> 2011-05-30 08:48:43 ---
Please also post
- kvm_stat output
- trace-cmd record -e kvm; trace-cmd report
- qemu monitor
(qemu) info registers
(qemu) x/40i $eip - 32
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
2011-05-30 8:48 ` [Bug 36222] " bugzilla-daemon
@ 2011-05-30 9:18 ` bugzilla-daemon
2011-05-30 9:20 ` bugzilla-daemon
` (12 subsequent siblings)
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 9:18 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #2 from Török Edwin <edwintorok@gmail.com> 2011-05-30 09:18:31 ---
Created an attachment (id=60032)
--> (https://bugzilla.kernel.org/attachment.cgi?id=60032)
kvm_stat output
when the 100% cpu usage happens
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
2011-05-30 8:48 ` [Bug 36222] " bugzilla-daemon
2011-05-30 9:18 ` bugzilla-daemon
@ 2011-05-30 9:20 ` bugzilla-daemon
2011-05-30 9:55 ` Avi Kivity
2011-05-30 9:26 ` bugzilla-daemon
` (11 subsequent siblings)
14 siblings, 1 reply; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 9:20 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #3 from Török Edwin <edwintorok@gmail.com> 2011-05-30 09:20:06 ---
Created an attachment (id=60042)
--> (https://bugzilla.kernel.org/attachment.cgi?id=60042)
trace-cmd record -e kvm; ^C; trace-cmd report
(In reply to comment #1)
> Please also post
>
> - kvm_stat output
> - trace-cmd record -e kvm; trace-cmd report
Doesn't seem to be part of mainline, are you refering to this trace-cmd?
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (2 preceding siblings ...)
2011-05-30 9:20 ` bugzilla-daemon
@ 2011-05-30 9:26 ` bugzilla-daemon
2011-05-30 10:31 ` bugzilla-daemon
` (10 subsequent siblings)
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 9:26 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #4 from Török Edwin <edwintorok@gmail.com> 2011-05-30 09:25:58 ---
(In reply to comment #1)
> - qemu monitor
> (qemu) info registers
> (qemu) x/40i $eip - 32
Hmm libvirt doesn't provide access to qemu monitor on purpose.
Run it manually like this:
/usr/bin/kvm -S -cpu
phenom,+wdt,+skinit,+osvw,+3dnowprefetch,+misalignsse,+sse4a,+abm,+cr8legacy,+extapic,+cmp_legacy,+lahf_lm,+rdtscp,+pdpe1gb,+popcnt,+cx16,+ht,+vme
-enable-nesting -enable-kvm -m 3072 -smp 5,sockets=5,cores=1,threads=1 -name
debian-enc -uuid 55782a0a-937c-fa7b-8db5-86876d151a08 -rtc base=utc -boot
order=c,menu=off -drive
file=/var/lib/libvirt/images/debian-enc.img,if=none,id=drive-virtio-disk0,boot=on,format=raw
-device
virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0
-drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device
ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -usb -device
usb-tablet,id=input0 -vga cirrus -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 -monitor stdio
(qemu) info registers
RAX=ffffffff81ca0ac0 RBX=ffff8800ba5a3d48 RCX=ffffffff81c9b020
RDX=0000000000000000
RSI=00000000000000ff RDI=00000000000000f0 RBP=ffff8800bf003f88
RSP=ffff8800bf003f88
R8 =0000000000000000 R9 =0000000000000001 R10=0000000000000001
R11=00000090ffffff90
R12=0000000000000004 R13=ffff8800ba5a3d6c R14=ffff8800ba5a3d00
R15=ffff8800bf00d1c0
RIP=ffffffff81023f75 RFL=00000046 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1
ES =0000 0000000000000000 ffffffff 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 ffffffff 00000000
FS =0000 00007fc3a9d4b700 ffffffff 00000000
GS =0000 ffff8800bf000000 ffffffff 00000000
LDT=0000 0000000000000000 0000ffff 00000000
TR =0040 ffff8800bf00e640 00002087 00008b00 DPL=0 TSS64-busy
GDT= ffff8800bf004000 0000007f
IDT= ffffffff81dd5000 00000fff
CR0=8005003b CR2=00000000019093dc CR3=00000000bab17000 CR4=000006f0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000
DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=3800 [ST=7] FTW=80 MXCSR=00001f80
FPR0=8200000000000000 c01d FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
XMM00=00ff0000000000000000000000000000 XMM01=00000000000000000000000000000000
XMM02=ffffffff00000000000000ff00000000 XMM03=ffffffff00000000000000ff00000000
XMM04=776f6e206c6c695700000000019039e0 XMM05=00000000000000000000000000000000
XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000
XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000
XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000
XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000
XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000
(qemu) x/40i $eip - 32
0xffffffff81023f55: leaveq
0xffffffff81023f56: retq
0xffffffff81023f57: nopw 0x0(%rax,%rax,1)
0xffffffff81023f60: push %rbp
0xffffffff81023f61: mov %rsp,%rbp
0xffffffff81023f64: sti
0xffffffff81023f65: hlt
0xffffffff81023f66: leaveq
0xffffffff81023f67: retq
0xffffffff81023f68: nopl 0x0(%rax,%rax,1)
0xffffffff81023f70: push %rbp
0xffffffff81023f71: mov %rsp,%rbp
0xffffffff81023f74: hlt
0xffffffff81023f75: leaveq
0xffffffff81023f76: retq
0xffffffff81023f77: nopw 0x0(%rax,%rax,1)
0xffffffff81023f80: push %rbp
0xffffffff81023f81: mov %rsp,%rbp
0xffffffff81023f84: clts
0xffffffff81023f86: leaveq
0xffffffff81023f87: retq
0xffffffff81023f88: nopl 0x0(%rax,%rax,1)
0xffffffff81023f90: push %rbp
0xffffffff81023f91: mov %rsp,%rbp
0xffffffff81023f94: mov %cr0,%rax
0xffffffff81023f97: leaveq
0xffffffff81023f98: retq
0xffffffff81023f99: nopl 0x0(%rax)
0xffffffff81023fa0: push %rbp
0xffffffff81023fa1: mov %rsp,%rbp
0xffffffff81023fa4: mov %rdi,%cr0
0xffffffff81023fa7: leaveq
0xffffffff81023fa8: retq
0xffffffff81023fa9: nopl 0x0(%rax)
0xffffffff81023fb0: push %rbp
0xffffffff81023fb1: mov %rsp,%rbp
0xffffffff81023fb4: mov %cr2,%rax
0xffffffff81023fb7: leaveq
0xffffffff81023fb8: retq
0xffffffff81023fb9: nopl 0x0(%rax)
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* Re: [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 9:20 ` bugzilla-daemon
@ 2011-05-30 9:55 ` Avi Kivity
0 siblings, 0 replies; 17+ messages in thread
From: Avi Kivity @ 2011-05-30 9:55 UTC (permalink / raw)
To: bugzilla-daemon; +Cc: kvm
On 05/30/2011 12:20 PM, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=36222
>
>
>
>
>
> --- Comment #3 from Török Edwin<edwintorok@gmail.com> 2011-05-30 09:20:06 ---
> Created an attachment (id=60042)
> --> (https://bugzilla.kernel.org/attachment.cgi?id=60042)
> trace-cmd record -e kvm; ^C; trace-cmd report
>
> (In reply to comment #1)
> > Please also post
> >
> > - kvm_stat output
> > - trace-cmd record -e kvm; trace-cmd report
>
> Doesn't seem to be part of mainline, are you refering to this trace-cmd?
> git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git
>
Yes. Install udis86 and udis86-devel before building it, please.
--
error compiling committee.c: too many arguments to function
^ permalink raw reply [flat|nested] 17+ messages in thread
* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (3 preceding siblings ...)
2011-05-30 9:26 ` bugzilla-daemon
@ 2011-05-30 10:31 ` bugzilla-daemon
2011-05-30 10:55 ` bugzilla-daemon
` (9 subsequent siblings)
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 10:31 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #5 from Avi Kivity <avi@redhat.com> 2011-05-30 10:31:43 ---
On 05/30/2011 12:20 PM, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=36222
>
>
>
>
>
> --- Comment #3 from Török Edwin<edwintorok@gmail.com> 2011-05-30 09:20:06 ---
> Created an attachment (id=60042)
--> (https://bugzilla.kernel.org/attachment.cgi?id=60042)
> --> (https://bugzilla.kernel.org/attachment.cgi?id=60042)
> trace-cmd record -e kvm; ^C; trace-cmd report
>
> (In reply to comment #1)
> > Please also post
> >
> > - kvm_stat output
> > - trace-cmd record -e kvm; trace-cmd report
>
> Doesn't seem to be part of mainline, are you refering to this trace-cmd?
> git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git
>
Yes. Install udis86 and udis86-devel before building it, please.
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (4 preceding siblings ...)
2011-05-30 10:31 ` bugzilla-daemon
@ 2011-05-30 10:55 ` bugzilla-daemon
2011-05-30 10:58 ` bugzilla-daemon
` (8 subsequent siblings)
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 10:55 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #6 from Avi Kivity <avi@redhat.com> 2011-05-30 10:55:39 ---
On 05/30/2011 12:26 PM, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=36222
>
>
>
>
>
> --- Comment #4 from Török Edwin<edwintorok@gmail.com> 2011-05-30 09:25:58 ---
> (In reply to comment #1)
> > - qemu monitor
> > (qemu) info registers
> > (qemu) x/40i $eip - 32
> 0xffffffff81023f74: hlt
> 0xffffffff81023f75: leaveq
> 0xffffffff81023f76: retq
Looks like the ordinary idle loop. What does the guest say while it's
shutting down?
Seems like some daemon can't stop itself, not a host issue.
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (5 preceding siblings ...)
2011-05-30 10:55 ` bugzilla-daemon
@ 2011-05-30 10:58 ` bugzilla-daemon
2011-05-30 11:01 ` bugzilla-daemon
` (7 subsequent siblings)
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 10:58 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #7 from Török Edwin <edwintorok@gmail.com> 2011-05-30 10:58:47 ---
It says:
Will now halt.
_
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (6 preceding siblings ...)
2011-05-30 10:58 ` bugzilla-daemon
@ 2011-05-30 11:01 ` bugzilla-daemon
2011-05-30 11:09 ` bugzilla-daemon
` (6 subsequent siblings)
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From: bugzilla-daemon @ 2011-05-30 11:01 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #8 from Török Edwin <edwintorok@gmail.com> 2011-05-30 11:01:00 ---
And that corresponds to this script:
log_action_msg "Will now halt"
halt -d -f $netdown $poweroff $hddown
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (7 preceding siblings ...)
2011-05-30 11:01 ` bugzilla-daemon
@ 2011-05-30 11:09 ` bugzilla-daemon
2011-05-30 11:38 ` bugzilla-daemon
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From: bugzilla-daemon @ 2011-05-30 11:09 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #9 from Török Edwin <edwintorok@gmail.com> 2011-05-30 11:09:45 ---
Using -serial stdio, and console=ttyS0 I see an Oops when running 'halt -f -p'
in the guest:
/[ 36.308445] invalid opcode: 0000 [#1] SMP
[ 36.308445] CPU 1
[ 36.308445] Modules linked in:
[ 36.308445]
[ 36.308445] Pid: 0, comm: kworker/0:0 Not tainted 3.0.0-rc1 #8 Bochs Bochs
[ 36.308445] RIP: 0010:[<ffffffff8101cf19>] [<ffffffff8101cf19>]
native_play_dead+0xd9/0xf0
[ 36.308445] RSP: 0018:ffff8800bbeb1ef8 EFLAGS: 00010046
[ 36.308445] RAX: ffff8800bbeb0010 RBX: ffff8800bbeb0010 RCX:
0000000000000000
[ 36.308445] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
ffff8800bbeb1ee4
[ 36.308445] RBP: ffff8800bbeb1f08 R08: ffff8800bbeb1edc R09:
ffff8800bbeb1ed8
[ 36.308445] R10: 0000000874121b10 R11: 0000000000000000 R12:
00000000ffffffff
[ 36.308445] R13: 0000000000000000 R14: 0000000000000000 R15:
0000000000000000
[ 36.308445] FS: 00007f0c93b3f700(0000) GS:ffff8800bf100000(0000)
knlGS:0000000000000000
[ 36.308445] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 36.308445] CR2: 00007f9c8e7c0f80 CR3: 0000000001c93000 CR4:
00000000000006e0
[ 36.308445] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 36.308445] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 36.308445] Process kworker/0:0 (pid: 0, threadinfo ffff8800bbeb0000, task
ffff8800bbe76740)
[ 36.308445] Stack:
[ 36.308445] ffff8800bbeb0010 ffffffff81d10810 ffff8800bbeb1f28
ffffffff810018ae
[ 36.308445] 0000000000000001 0000000000000000 ffff8800bbeb1f48
ffffffff8162c73b
[ 36.308445] 0000000000000000 0000000000000000 0000000000000000
0000000000000000
[ 36.308445] Call Trace:
[ 36.308445] [<ffffffff810018ae>] cpu_idle+0x9e/0xb0
[ 36.308445] [<ffffffff8162c73b>] start_secondary+0x177/0x17c
[ 36.308445] Code: 09 f4 65 48 8b 1c 25 c8 b5 00 00 48 81 eb c8 1f 00 00 0f
09 66 66 90 66 90 31 c9 0f 1f 80 00 00 00 00 0f ae 3b 48 89 d8 48 89 ca <0f> 01
c8 0f ae f0 4c 89 e0 0f 01 c9 eb e9 66 0f 1f 84 00 00 00
[ 36.308445] RIP [<ffffffff8101cf19>] native_play_dead+0xd9/0xf0
[ 36.308445] RSP <ffff8800bbeb1ef8>
[ 36.308445] ---[ end trace b72c6a73fe4299e2 ]---
[ 36.330393] invalid opcode: 0000 [#2] SMP
[ 36.330393] CPU 2
[ 36.330393] Modules linked in:
[ 36.330393]
[ 36.330393] Pid: 0, comm: kworker/0:1 Tainted: G D 3.0.0-rc1 #8
Bochs Bochs
[ 36.330393] RIP: 0010:[<ffffffff8101cf19>] [<ffffffff8101cf19>]
native_play_dead+0xd9/0xf0
[ 36.330393] RSP: 0018:ffff8800bbecfef8 EFLAGS: 00010046
[ 36.330393] RAX: ffff8800bbece010 RBX: ffff8800bbece010 RCX:
0000000000000000
[ 36.330393] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
ffff8800bbecfee4
[ 36.330393] RBP: ffff8800bbecff08 R08: ffff8800bbecfedc R09:
ffff8800bbecfed8
[ 36.330393] R10: 000000166d13e921 R11: 0000000000000000 R12:
00000000ffffffff
[ 36.330393] R13: 0000000000000000 R14: 0000000000000000 R15:
0000000000000000
[ 36.330393] FS: 00007ff8f51e97a0(0000) GS:ffff8800bf200000(0000)
knlGS:0000000000000000
[ 36.330393] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 36.330393] CR2: 00007ff8f4aa7920 CR3: 0000000001c93000 CR4:
00000000000006e0
[ 36.330393] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 36.330393] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 36.330393] Process kworker/0:1 (pid: 0, threadinfo ffff8800bbece000, task
ffff8800bbec0ec0)
[ 36.330393] Stack:
[ 36.330393] ffff8800bbece010 ffffffff81d10810 ffff8800bbecff28
ffffffff810018ae
[ 36.330393] 0000000000000002 0000000000000000 ffff8800bbecff48
ffffffff8162c73b
[ 36.330393] 0000000000000000 0000000000000000 0000000000000000
0000000000000000
[ 36.330393] Call Trace:
[ 36.330393] [<ffffffff810018ae>] cpu_idle+0x9e/0xb0
[ 36.330393] [<ffffffff8162c73b>] start_secondary+0x177/0x17c
[ 36.330393] Code: 09 f4 65 48 8b 1c 25 c8 b5 00 00 48 81 eb c8 1f 00 00 0f
09 66 66 90 66 90 31 c9 0f 1f 80 00 00 00 00 0f ae 3b 48 89 d8 48 89 ca <0f> 01
c8 0f ae f0 4c 89 e0 0f 01 c9 eb e9 66 0f 1f 84 00 00 00
[ 36.330393] RIP [<ffffffff8101cf19>] native_play_dead+0xd9/0xf0
[ 36.330393] RSP <ffff8800bbecfef8>
[ 36.330393] ---[ end trace b72c6a73fe4299e3 ]---
[ 36.330393] Kernel panic - not syncing: Attempted to kill the idle task!
[ 36.330393] Pid: 0, comm: kworker/0:1 Tainted: G D 3.0.0-rc1 #8
[ 36.330393] Call Trace:
[ 36.330393] [<ffffffff81630721>] panic+0x8c/0x190
[ 36.330393] [<ffffffff8104d033>] do_exit+0x6a3/0x8a0
[ 36.330393] [<ffffffff81049544>] ? kmsg_dump+0x44/0x100
[ 36.330393] [<ffffffff81005633>] oops_end+0x83/0xb0
[ 36.330393] [<ffffffff81005766>] die+0x56/0x90
[ 36.330393] [<ffffffff81002bcc>] do_trap+0xbc/0x160
[ 36.330393] [<ffffffff810030c0>] do_invalid_op+0x90/0xb0
[ 36.330393] [<ffffffff8101cf19>] ? native_play_dead+0xd9/0xf0
[ 36.330393] [<ffffffff8103a97b>] ? __dequeue_entity+0x2b/0x50
[ 36.330393] [<ffffffff81024c48>] ? pvclock_clocksource_read+0x58/0xd0
[ 36.330393] [<ffffffff8126f0c5>] ? timerqueue_del+0x35/0x90
[ 36.330393] [<ffffffff8106d396>] ? __remove_hrtimer+0x36/0xa0
[ 36.330393] [<ffffffff81634d5b>] invalid_op+0x1b/0x20
[ 36.330393] [<ffffffff8101cf19>] ? native_play_dead+0xd9/0xf0
[ 36.330393] [<ffffffff8101cec5>] ? native_play_dead+0x85/0xf0
[ 36.330393] [<ffffffff810018ae>] cpu_idle+0x9e/0xb0
[ 36.330393] [<ffffffff8162c73b>] start_secondary+0x177/0x17c
[ 36.308445] Kernel panic - not syncing: Attempted to kill the idle task!
[ 36.308445] Pid: 0, comm: kworker/0:0 Tainted: G D 3.0.0-rc1 #8
[ 36.308445] Call Trace:
[ 36.308445] [<ffffffff81630721>] panic+0x8c/0x190
[ 36.308445] [<ffffffff8104d033>] do_exit+0x6a3/0x8a0
[ 36.308445] [<ffffffff81049544>] ? kmsg_dump+0x44/0x100
[ 36.308445] [<ffffffff81005633>] oops_end+0x83/0xb0
[ 36.308445] [<ffffffff81005766>] die+0x56/0x90
[ 36.308445] [<ffffffff81002bcc>] do_trap+0xbc/0x160
[ 36.308445] [<ffffffff810030c0>] do_invalid_op+0x90/0xb0
[ 36.308445] [<ffffffff8101cf19>] ? native_play_dead+0xd9/0xf0
[ 36.308445] [<ffffffff81024c48>] ? pvclock_clocksource_read+0x58/0xd0
[ 36.308445] [<ffffffff8126f0c5>] ? timerqueue_del+0x35/0x90
[ 36.308445] [<ffffffff8106d396>] ? __remove_hrtimer+0x36/0xa0
[ 36.308445] [<ffffffff81634d5b>] invalid_op+0x1b/0x20
[ 36.308445] [<ffffffff8101cf19>] ? native_play_dead+0xd9/0xf0
[ 36.308445] [<ffffffff8101cec5>] ? native_play_dead+0x85/0xf0
[ 36.308445] [<ffffffff810018ae>] cpu_idle+0x9e/0xb0
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (8 preceding siblings ...)
2011-05-30 11:09 ` bugzilla-daemon
@ 2011-05-30 11:38 ` bugzilla-daemon
2011-05-30 11:43 ` bugzilla-daemon
` (4 subsequent siblings)
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 11:38 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #10 from Avi Kivity <avi@redhat.com> 2011-05-30 11:38:09 ---
On 05/30/2011 02:09 PM, bugzilla-daemon@bugzilla.kernel.org wrote:
> [ 36.308445] [<ffffffff810018ae>] cpu_idle+0x9e/0xb0
> [ 36.308445] [<ffffffff8162c73b>] start_secondary+0x177/0x17c
> [ 36.308445] Code: 09 f4 65 48 8b 1c 25 c8 b5 00 00 48 81 eb c8 1f 00 00 0f
> 09 66 66 90 66 90 31 c9 0f 1f 80 00 00 00 00 0f ae 3b 48 89 d8 48 89 ca<0f> 01
> c8 0f ae f0 4c 89 e0 0f 01 c9 eb e9 66 0f 1f 84 00 00 00
0f 01 c8 monitor %rax,%rcx,%rdx
The guest thinks it has monitor/mwait, which kvm doesn't emulate.
What's the guest's /proc/cpuinfo?
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (9 preceding siblings ...)
2011-05-30 11:38 ` bugzilla-daemon
@ 2011-05-30 11:43 ` bugzilla-daemon
2011-05-30 12:26 ` bugzilla-daemon
` (3 subsequent siblings)
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 11:43 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #11 from Török Edwin <edwintorok@gmail.com> 2011-05-30 11:43:37 ---
With 3.0.0-rc1:
processor : 4
vendor_id : AuthenticAMD
cpu family : 16
model : 2
model name : AMD Phenom(tm) 9550 Quad-Core Processor
stepping : 3
cpu MHz : 3214.320
cache size : 512 KB
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb lm
rep_good nopl extd_apicid pni cx16 popcnt hypervisor lahf_lm cmp_legacy svm
cr8_legacy abm sse4a misalignsse 3dnowprefetch npt
bogomips : 6428.64
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:
With 2.6.39 (which shuts down properly) it is the same.
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (10 preceding siblings ...)
2011-05-30 11:43 ` bugzilla-daemon
@ 2011-05-30 12:26 ` bugzilla-daemon
2011-06-06 10:57 ` bugzilla-daemon
` (2 subsequent siblings)
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-05-30 12:26 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
--- Comment #12 from Török Edwin <edwintorok@gmail.com> 2011-05-30 12:26:19 ---
Bisection tells me this is the offending commit (see below), but I see you
found it too.
commit 349c004e3d31fda23ad225b61861be38047fff16
Author: Christoph Lameter <cl@linux.com>
Date: Sat Mar 12 12:50:10 2011 +0100
x86: A fast way to check capabilities of the current cpu
Add this_cpu_has() which determines if the current cpu has a certain
ability using a segment prefix and a bit test operation.
For that we need to add bit operations to x86s percpu.h.
Many uses of cpu_has use a pointer passed to a function to determine
the current flags. That is no longer necessary after this patch.
However, this patch only converts the straightforward cases where
cpu_has is used with this_cpu_ptr. The rest is work for later.
-tj: Rolled up patch to add x86_ prefix and use percpu_read() instead
of percpu_read_stable().
Signed-off-by: Christoph Lameter <cl@linux.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (11 preceding siblings ...)
2011-05-30 12:26 ` bugzilla-daemon
@ 2011-06-06 10:57 ` bugzilla-daemon
2012-06-13 15:07 ` bugzilla-daemon
2012-06-13 15:07 ` bugzilla-daemon
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2011-06-06 10:57 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
Florian Mickler <florian@mickler.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |florian@mickler.org
--- Comment #13 from Florian Mickler <florian@mickler.org> 2011-06-06 10:57:48 ---
A patch referencing this bug report has been merged in v3.0-rc2:
commit 4f3c125c7420c85eaff627145557e392a871922d
Author: Avi Kivity <avi@redhat.com>
Date: Mon May 30 08:23:57 2011 -0400
x86: Fix mwait_play_dead() faulting on mwait-incapable cpus
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (12 preceding siblings ...)
2011-06-06 10:57 ` bugzilla-daemon
@ 2012-06-13 15:07 ` bugzilla-daemon
2012-06-13 15:07 ` bugzilla-daemon
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2012-06-13 15:07 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
Alan <alan@lxorguk.ukuu.org.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |alan@lxorguk.ukuu.org.uk
Resolution| |CODE_FIX
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* [Bug 36222] kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown
2011-05-30 8:40 [Bug 36222] New: kvm: 100% CPU usage after 3.0.0-rc1 guest shutdown bugzilla-daemon
` (13 preceding siblings ...)
2012-06-13 15:07 ` bugzilla-daemon
@ 2012-06-13 15:07 ` bugzilla-daemon
14 siblings, 0 replies; 17+ messages in thread
From: bugzilla-daemon @ 2012-06-13 15:07 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=36222
Alan <alan@lxorguk.ukuu.org.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |CLOSED
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