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): If you fix the issue, kindly add following tag Reported-by: kernel test robot # 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