linux-kernel - Re: [KVM] 816be9e9be: kernel-selftests.kvm.smm

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Message-ID: <YUpjOO3bq/SMFN7A@google.com>
Date:   Tue, 21 Sep 2021 22:56:56 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     kernel test robot <oliver.sang@...el.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        lkp@...el.com, xudong.hao@...el.com
Subject: Re: [KVM]  816be9e9be: kernel-selftests.kvm.smm_test.fail

On Sun, Sep 12, 2021, kernel test robot wrote:
> 
> 
> Greeting,
> 
> FYI, we noticed the following commit (built with gcc-9):
> 
> commit: 816be9e9be8d2e19dcea35fbec06f00cd5749fed ("KVM: nVMX: Don't evaluate "emulation required" on nested VM-Exit")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> 
> 
> in testcase: kernel-selftests
> version: kernel-selftests-x86_64-d0cba0d1-1_20210907
> with following parameters:
> 
> 	group: kvm
> 	ucode: 0xe2
> 
> test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
> test-url: https://www.kernel.org/doc/Documentation/kselftest.txt
> 
> 
> on test machine: 8 threads Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz with 28G memory
> 
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
> 
> 
> 
> 
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <oliver.sang@...el.com>

Maxim has a fix in the works.