FYI, we noticed the following commit (built with gcc-6):

commit: 8230b905a6780c60372bf5df7bf5f23041ca3196 ("selftests: mqueue: Use full path to run tests from Makefile")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

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: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 64G memory

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


2017-09-29 19:38:09 make run_tests -C mqueue
make: Entering directory '/usr/src/linux-selftests-x86_64-rhel-7.2-8230b905a6780c60372bf5df7bf5f23041ca3196/tools/testing/selftests/mqueue'
gcc -O2    mq_open_tests.c -lrt -lpthread -lpopt -o /usr/src/linux-selftests-x86_64-rhel-7.2-8230b905a6780c60372bf5df7bf5f23041ca3196/tools/testing/selftests/mqueue/mq_open_tests
gcc -O2    mq_perf_tests.c -lrt -lpthread -lpopt -o /usr/src/linux-selftests-x86_64-rhel-7.2-8230b905a6780c60372bf5df7bf5f23041ca3196/tools/testing/selftests/mqueue/mq_perf_tests
/usr/src/linux-selftests-x86_64-rhel-7.2-8230b905a6780c60372bf5df7bf5f23041ca3196/tools/testing/selftests/mqueue/mq_open_tests /test1 || echo "selftests: mq_open_tests [FAIL]"
/usr/src/linux-selftests-x86_64-rhel-7.2-8230b905a6780c60372bf5df7bf5f23041ca3196/tools/testing/selftests/mqueue//mq_perf_tests || echo "selftests: mq_perf_tests [FAIL]"



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