FYI, we noticed the following commit (built with gcc-7):

commit: 0367f205a3b7c0efe774634eef1f4697c79a4132 ("KVM: vmx: add support for emulating UMIP")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

in testcase: kvm-unit-tests-qemu
with following parameters:




on test machine: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 128G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):




2017-12-25 18:11:16 ./run_tests.sh
...
FAIL vmx_instruction_intercept (44 tests, 7 unexpected failures)
...


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,
Xiaolong