FYI, we noticed the following commit:

commit: 05a0a21e9346172402b5a2dd195eb75cce24efd5 ("userfaultfd: selftest: combine all cases into the single executable")
url: https://github.com/0day-ci/linux/commits/Mike-Rapoport/userfaultfd-selftest-combine-all-cases-into-the-single-executable/20170323-055752


in testcase: kernel_selftests
with following parameters:


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) i7-2600K CPU @ 3.40GHz with 8G memory

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



selftests:  run_vmtests [FAIL]
/usr/src/linux-selftests-x86_64-rhel-7.2-05a0a21e9346172402b5a2dd195eb75cce24efd5/tools/testing/selftests/vm
make: Leaving directory '/usr/src/linux-selftests-x86_64-rhel-7.2-05a0a21e9346172402b5a2dd195eb75cce24efd5/tools/testing/selftests/vm'
skip watchdog test: not be default compiling/testing target



To reproduce:

        git clone https://github.com/01org/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