* [Bug 150851] general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40
2016-08-01 4:04 [Bug 150851] New: general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40 bugzilla-daemon
@ 2016-08-01 6:25 ` bugzilla-daemon
2016-08-01 10:43 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-08-01 6:25 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=150851
Wanpeng Li <wanpeng.li@hotmail.com> changed:
What |Removed |Added
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CC| |wanpeng.li@hotmail.com
--- Comment #1 from Wanpeng Li <wanpeng.li@hotmail.com> ---
How to reproduce it?
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* [Bug 150851] general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40
2016-08-01 4:04 [Bug 150851] New: general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40 bugzilla-daemon
2016-08-01 6:25 ` [Bug 150851] " bugzilla-daemon
@ 2016-08-01 10:43 ` bugzilla-daemon
2016-08-02 8:49 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-08-01 10:43 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=150851
Huaitong Han <oenhan@gmail.com> changed:
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CC| |oenhan@gmail.com
--- Comment #2 from Huaitong Han <oenhan@gmail.com> ---
I guess it has nothing with virtulization, please give me your CPU information
with "cat /proc/cpuinfo | head -n 30"
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* [Bug 150851] general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40
2016-08-01 4:04 [Bug 150851] New: general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40 bugzilla-daemon
2016-08-01 6:25 ` [Bug 150851] " bugzilla-daemon
2016-08-01 10:43 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-08-02 8:49 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=150851
--- Comment #3 from JianhongYin <yin-jianhong@163.com> ---
(In reply to Wanpeng Li from comment #1)
> How to reproduce it?
have not reproduced again yet.
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* [Bug 150851] general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40
2016-08-01 4:04 [Bug 150851] New: general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40 bugzilla-daemon
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From: bugzilla-daemon @ 2016-08-02 9:00 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=150851
--- Comment #4 from JianhongYin <yin-jianhong@163.com> ---
(In reply to Huaitong Han from comment #2)
> I guess it has nothing with virtulization, please give me your CPU
> information with "cat /proc/cpuinfo | head -n 30"
The machine is used by others,
got it's info from internal manage system:
System
------------------------------------------
Host Hypervisor (not virtualized)
Vendor IBM
Model System x3650 -[7979AC1]-
Serial Number KQHTLVV
MAC Address 00:1A:64:C7:EC:08
Memory 34029 MB
NUMA Nodes 1
CPU
------------------------------------------
Vendor Intel Corp.
Model Name Xeon
Family 6
Model 23
Stepping 6
Speed 1992.0
Processors 8
Cores 8
Sockets 2
Hyper False
Flags fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx
x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64
monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm dtherm
tpr_shadow vnmi flexpriority cpufreq
Arch(s) i386 x86_64
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* [Bug 150851] general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40
2016-08-01 4:04 [Bug 150851] New: general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40 bugzilla-daemon
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From: bugzilla-daemon @ 2016-08-11 20:31 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=150851
Mark Asselstine <asselsm@gmail.com> changed:
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CC| |asselsm@gmail.com
--- Comment #5 from Mark Asselstine <asselsm@gmail.com> ---
You are not being clear if this is falling over in the guest or native, which
is it?
Can you use gdb to confirm the instruction which is failing?
I am no expert but I have built the latest mainline kernel as of today and I
believe the failure is in the call to 'rdpmc'. The PCE bit (9th bit) in CR4
appears to be 0 and thus RDPMC can only be used in ring 0. If it is a guest
which is failing this might explain the oops.
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* [Bug 150851] general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40
2016-08-01 4:04 [Bug 150851] New: general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40 bugzilla-daemon
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2016-08-12 17:24 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-08-11 20:36 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=150851
--- Comment #6 from Mark Asselstine <asselsm@gmail.com> ---
If this is the guest and you are using "-cpu host" you can try "-cpu
host,level=9" to disable PMU emulation (see the comments here
https://bugs.launchpad.net/qemu/+bug/1037675)
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* [Bug 150851] general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40
2016-08-01 4:04 [Bug 150851] New: general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40 bugzilla-daemon
` (5 preceding siblings ...)
2016-08-11 20:36 ` bugzilla-daemon
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2016-08-12 17:24 ` bugzilla-daemon
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From: bugzilla-daemon @ 2016-08-11 21:46 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=150851
--- Comment #7 from Mark Asselstine <asselsm@gmail.com> ---
RCX: 000000000000001e is suspicious. This seems to be out of range.
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* [Bug 150851] general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40
2016-08-01 4:04 [Bug 150851] New: general protection fault: 0000 [#1] SMP; native_read_pmc+0x7/0x40 bugzilla-daemon
` (6 preceding siblings ...)
2016-08-11 21:46 ` bugzilla-daemon
@ 2016-08-12 17:24 ` bugzilla-daemon
7 siblings, 0 replies; 9+ messages in thread
From: bugzilla-daemon @ 2016-08-12 17:24 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=150851
--- Comment #8 from Mark Asselstine <asselsm@gmail.com> ---
This looks very much like what is fixed in commit
65ea11ec6a82b1d44aba62b59e9eb20247e57c6e [x86/hweight: Don't clobber %rdi]
Can you try with the above applied?
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