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SubjectRe: [PATCH] KVM: x86: Forcibly leave nested virt when SMM state is toggled
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On 2/18/22 18:22, Tadeusz Struk wrote:
> On 2/18/22 08:58, Sean Christopherson wrote:
>> This SMM-specific patch fixes something different, the bug that you
>> are still
>> hitting is the FNAME(cmpxchg_gpte) mess.  The uaccess CMPXCHG
>> series[*] that
>> properly fixes that issue hasn't been merged yet.
>>
>>    ==================================================================
>>    BUG: KASAN: use-after-free in ept_cmpxchg_gpte.constprop.0+0x3c3/0x590
>>    Write of size 8 at addr ffff888010000000 by task repro/5633
>>
>> [*]https://lore.kernel.org/all/20220202004945.2540433-1-seanjc@google.com
>>
>
> Ok, that's good. I will keep an eye on it and give it a try then.

I'll poke PeterZ for a review next week.

Paolo

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