Re: [syzbot] WARNING in kvm_mmu_uninit_tdp_mmu (2)

From: Paolo Bonzini
Date: Thu Apr 28 2022 - 13:22:56 EST


On 4/28/22 17:32, Sean Christopherson wrote:
On Tue, Apr 26, 2022, Maxim Levitsky wrote:
I can reproduce this in a VM, by running and CTRL+C'in my ipi_stress test,

Can you post your ipi_stress test? I'm curious to see if I can repro, and also
very curious as to what might be unique about your test. I haven't been able to
repro the syzbot test, nor have I been able to repro by killing VMs/tests.

Did you test with CONFIG_PREEMPT=y?

(BTW, the fact that it reproduces under 5.17 is a mixed blessing, because it means that we can analyze/stare at a simpler codebase).

Paolo