On Wed, Jul 17, 2013 at 08:42:26PM +0200, Markus Trippelsdorf wrote:
> On 2013.07.18 at 01:25 +0800, Xiao Guangrong wrote:
> > Hi Markus,
> >
> > Thanks for your report! I am downloading the ubuntu iso and will try to
> > reproducible it.
> >
> > Could you please enable these tracepoints:
> > kvmmmu/check_mmio_spte
> > kvmmmu/handle_mmio_page_fault
> > kvmmmu/kvm_mmu_invalidate_zap_all_pages
> > kvmmmu/mark_mmio_spte
> > kvm/kvm_mmio
> > kvm/vcpu_match_mmio
> >
> > and post the output?
> >
> First line repeated ad nauseam.
> ...
> 10346367 qemu-system-x86-1403 [001] 1451.422225: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346368 qemu-system-x86-1403 [001] 1451.422226: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346369 qemu-system-x86-1403 [001] 1451.422227: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346370 qemu-system-x86-1403 [001] 1451.422228: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346371 qemu-system-x86-1403 [001] 1451.422229: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346372 qemu-system-x86-1404 [002] 1451.422229: kvm_mmio:
> mmio write len 4 gpa 0xfee000b0 val 0x0
> 10346373 qemu-system-x86-1403 [001] 1451.422230: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346374 qemu-system-x86-1403 [001] 1451.422231: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346375 qemu-system-x86-1403 [001] 1451.422232: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346376 qemu-system-x86-1403 [001] 1451.422233: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346377 qemu-system-x86-1403 [001] 1451.422234: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346378 qemu-system-x86-1403 [001] 1451.422235: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346379 qemu-system-x86-1404 [002] 1451.422236: kvm_mmio:
> mmio write len 4 gpa 0xfee00380 val 0x3c7b0
> 10346380 qemu-system-x86-1403 [001] 1451.422237: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346381 qemu-system-x86-1403 [001] 1451.422238: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346382 qemu-system-x86-1403 [001] 1451.422239: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346383 qemu-system-x86-1403 [001] 1451.422240: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346384 qemu-system-x86-1403 [001] 1451.422241: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346385 qemu-system-x86-1403 [001] 1451.422242: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346386 qemu-system-x86-1403 [001] 1451.422243: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346387 qemu-system-x86-1403 [001] 1451.422244: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> 10346403 qemu-system-x86-1403 [001] 1451.422260: check_mmio_spte:
> spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> ...
> Last line repeated ad nauseam.
>
While this happens can you run "echo t > /proc/sysrq-trigger" and attach
dmesg here.
--
Gleb.
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