On Mon, May 11, 2020 at 09:09:26AM +0800, kernel test robot wrote:
> Greeting,
>
> FYI, we noticed the following commit (built with gcc-7):
>
> commit: 6b6a864bd7d7eb12a82ec6da1c2dd97a43f79449 ("[PATCH v2] KVM: nVMX:
> Tweak handling of failure code for nested VM-Enter failure")
> url:
> https://github.com/0day-ci/linux/commits/Sean-Christopherson/KVM-nVMX-Tweak-handling-of-failure-code-for-nested-VM-Enter-failure/20200429-052911
> base: https://git.kernel.org/cgit/virt/kvm/kvm.git linux-next
>
> in testcase: kernel-selftests
> with following parameters:
>
> group: kselftests-kvm
> ucode: 0x500002c
>
> 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: 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz
> with 192G 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 <[email protected]>
>
>
>
> # selftests: kvm: vmx_tsc_adjust_test
> # ==== Test Assertion Failure ====
> # x86_64/vmx_tsc_adjust_test.c:153: false
> # pid=12157 tid=12157 - Interrupted system call
> # 1 0x000000000040116a: main at vmx_tsc_adjust_test.c:153
> # 2 0x00007fafd54bce0a: ?? ??:0
> # 3 0x00000000004011e9: _start at ??:?
> # Failed guest assert: (vmreadz(VM_EXIT_REASON) == (0x80000000 | 33))
> # IA32_TSC_ADJUST is -4294972240 (-1 * TSC_ADJUST_VALUE + -4944).
> not ok 14 selftests: kvm: vmx_tsc_adjust_test # exit=254
Ugh, missed the prepare_vmcs02() path. v3 incoming.
