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

commit: d3fd949abd3e3005dab7ccb185c3c8bc0ad639f1 ("selftests: Fix memfd to support relocatable build (O=objdir)")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: kernel-selftests
with following parameters:

	group: kselftests-02
	ucode: 0xd6

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 <rong.a.chen@intel.com>


# selftests: memfd: memfd_test
# memfd: CREATE
# memfd: BASIC
# memfd: SEAL-WRITE
# memfd: SEAL-FUTURE-WRITE
# memfd: CREATE
# memfd: BASIC
# memfd: SEAL-WRITE
# memfd: SEAL-FUTURE-WRITE
# memfd: SEAL-SHRINK
# memfd: SEAL-GROW
# memfd: SEAL-RESIZE
# memfd: SHARE-DUP 
# memfd: SHARE-MMAP 
# memfd: SHARE-OPEN 
# memfd: SHARE-FORK 
# memfd: SHARE-DUP (shared file-table)
# memfd: SHARE-MMAP (shared file-table)
# memfd: SHARE-OPEN (shared file-table)
# memfd: SHARE-FORK (shared file-table)
# memfd: DONE
ok 1 selftests: memfd: memfd_test
# selftests: memfd: fuse_test
# Aborted
not ok 2 selftests: memfd: fuse_test # exit=134
# selftests: memfd: fuse_mnt
# fuse: missing mountpoint parameter
not ok 3 selftests: memfd: fuse_mnt # exit=1
# selftests: memfd: run_fuse_test.sh
# opening: ./mnt/memfd
# fuse: DONE
ok 4 selftests: memfd: run_fuse_test.sh


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