2017-05-11 15:44 GMT+08:00 Paolo Bonzini :
>
>
> On 11/05/2017 02:56, Wanpeng Li wrote:
>>> Hmm, thinking more about it, maybe use mxcsr_feature_mask instead of
>>> digging into vcpu->arch.guest_fpu? If you send v2, please remember to
>> ERROR: "mxcsr_feature_mask" [arch/x86/kvm/kvm.ko] undefined.
On 11/05/2017 02:56, Wanpeng Li wrote:
>> Hmm, thinking more about it, maybe use mxcsr_feature_mask instead of
>> digging into vcpu->arch.guest_fpu? If you send v2, please remember to
> ERROR: "mxcsr_feature_mask" [arch/x86/kvm/kvm.ko] undefined. So we
> should dig into vcpu->arch.guest_fpu.
Ye
2017-05-10 23:35 GMT+08:00 Paolo Bonzini :
>
>
> On 10/05/2017 12:19, Wanpeng Li wrote:
>>* with old userspace.
>>*/
>> - if (xstate_bv & ~kvm_supported_xcr0())
>> + if (xstate_bv & ~kvm_supported_xcr0() ||
>> + mxcsr &
>>
On 10/05/2017 12:19, Wanpeng Li wrote:
>* with old userspace.
>*/
> - if (xstate_bv & ~kvm_supported_xcr0())
> + if (xstate_bv & ~kvm_supported_xcr0() ||
> + mxcsr &
> ~vcpu->arch.guest_fpu.state.xsave.i387.mxcsr_mask)
>
On 10/05/2017 12:19, Wanpeng Li wrote:
> From: Wanpeng Li
>
> Reported by syzkaller:
>
>BUG: unable to handle kernel paging request at c07f6a2e
>IP: report_bug+0x94/0x120
>PGD 348e12067
>P4D 348e12067
>PUD 348e14067
>PMD 3cbd84067
>PTE 8003f7e87161
>
From: Wanpeng Li
Reported by syzkaller:
BUG: unable to handle kernel paging request at c07f6a2e
IP: report_bug+0x94/0x120
PGD 348e12067
P4D 348e12067
PUD 348e14067
PMD 3cbd84067
PTE 8003f7e87161
Oops: 0003 [#1] SMP
CPU: 2 PID: 7091 Comm: kvm_load_gue
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