linux-kernel - Re: KVM selftests are failing

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Date:   Fri, 16 Nov 2018 14:36:54 +0100
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     Ahmed Soliman <ahmedsoliman@...a.vt.edu>
Cc:     Anders Roxell <anders.roxell@...aro.org>,
        Shuah Khan <shuah@...nel.org>, linux-kselftest@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        Peter Xu <peterx@...hat.com>, linux-kernel@...r.kernel.org,
        Andrew Jones <drjones@...hat.com>
Subject: Re: KVM selftests are failing

Ahmed Soliman <ahmedsoliman@...a.vt.edu> writes:

> Hello once again,
>
> I noticed that there is still more problems with kvmself test (at
> least on my machine)
>
> Any test that would successfully reach the guest's code immediately
> VMexit by a shutdown.
>
> $ ./vmx_tsc_adjust_test
> ==== Test Assertion Failure ====
>  x86_64/vmx_tsc_adjust_test.c:156: run->exit_reason == KVM_EXIT_IO
>  pid=8499 tid=8499 - Success
>     1  0x00005604f07bd36c: ?? ??:0
>     2  0x00007f5c0dc53ae6: ?? ??:0
>     3  0x00005604f07bd4b9: ?? ??:0
>  Got exit_reason other than KVM_EXIT_IO: 8 (SHUTDOWN)
>

Hm, this is weird. Do other KVM users, e.g. qemu work on this host? Are
you sure this happens on the first VCPU_RUN invocation?

Could you try doing 

trace-cmd record -e kvm  ./x86_64/vmx_tsc_adjust_test && trace-cmd report 

to see if there's anything suspicious?

-- 
Vitaly