linux-kernel - Re: [KVM] 323d73a8ec: kernel_selftests.kvm.vmx_set_nested_state

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Date:   Tue, 20 Aug 2019 08:40:00 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     kernel test robot <rong.a.chen@...el.com>,
        Liran Alon <liran.alon@...cle.com>
Cc:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        Maran Wilson <maran.wilson@...cle.com>,
        Krish Sadhukhan <krish.sadhukhan@...cle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>, lkp@...org
Subject: Re: [KVM] 323d73a8ec:
 kernel_selftests.kvm.vmx_set_nested_state_test.fail

On 20/08/19 02:52, kernel test robot wrote:
> FYI, we noticed the following commit (built with gcc-7):
> 
> commit: 323d73a8ecad22bf3284f11112a7cce576ade6af ("KVM: nVMX: Change KVM_STATE_NESTED_EVMCS to signal vmcs12 is copied from eVMCS")
> https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux.git master
> 
> in testcase: kernel_selftests
> with following parameters:
> 
> 	group: kselftests-01
> 
> 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 16G memory
> 
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):

Patches for these are already on the list, but I'll add the Reported-by.

Paolo

> 
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <rong.a.chen@...el.com>
> 
> # selftests: kvm: vmx_set_nested_state_test
> # ==== Test Assertion Failure ====
> #   lib/kvm_util.c:1277: ret == 0
> #   pid=12810 tid=12810 - Invalid argument
> #      1	0x0000000000403624: vcpu_nested_state_set at kvm_util.c:1275
> #      2	0x0000000000401197: test_nested_state at vmx_set_nested_state_test.c:32
> #      3	0x0000000000401562: test_vmx_nested_state at vmx_set_nested_state_test.c:151
> #      4	0x000000000040100f: main at vmx_set_nested_state_test.c:283
> #      5	0x00007efdc57f409a: ?? ??:0
> #      6	0x0000000000401099: _start at ??:?
> #   KVM_SET_NESTED_STATE failed, ret: -1 errno: 22
> not ok 12 selftests: kvm: vmx_set_nested_state_test
> 
> 
> To reproduce:
> 
>         git clone https://github.com/intel/lkp-tests.git
>         cd lkp-tests
>         bin/lkp install job.yaml  # job file is attached in this email
>         bin/lkp run     job.yaml
> 
> 
> 
> Thanks,
> Rong Chen
>