(pleased be noted we found the issue still exists on latest maineline,
so report though the commit is old, FYI)


Greeting,

FYI, we noticed the following commit (built with gcc-11):

commit: efcfec579f6139528c9e6925eca2bc4a36da65c6 ("loop: fix no-unmap write-zeroes request behavior")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: mdadm-selftests
version: mdadm-selftests-x86_64-5f41845-1_20220518
with following parameters:

	disk: 1HDD
	test_prefix: 12
	ucode: 0x28



on test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-4790T CPU @ 2.70GHz 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 <oliver.sang@intel.com>

2022-08-05 18:01:28 mkdir -p /var/tmp
2022-08-05 18:01:28 mke2fs -t ext3 -b 4096 -J size=4 -q /dev/sda1
2022-08-05 18:02:00 mount -t ext3 /dev/sda1 /var/tmp
sed -e 's/{DEFAULT_METADATA}/1.2/g' \
-e 's,{MAP_PATH},/run/mdadm/map,g'  mdadm.8.in > mdadm.8
/usr/bin/install -D -m 644 mdadm.8 /usr/share/man/man8/mdadm.8
/usr/bin/install -D -m 644 mdmon.8 /usr/share/man/man8/mdmon.8
/usr/bin/install -D -m 644 md.4 /usr/share/man/man4/md.4
/usr/bin/install -D -m 644 mdadm.conf.5 /usr/share/man/man5/mdadm.conf.5
/usr/bin/install -D -m 644 udev-md-raid-creating.rules /lib/udev/rules.d/01-md-raid-creating.rules
/usr/bin/install -D -m 644 udev-md-raid-arrays.rules /lib/udev/rules.d/63-md-raid-arrays.rules
/usr/bin/install -D -m 644 udev-md-raid-assembly.rules /lib/udev/rules.d/64-md-raid-assembly.rules
/usr/bin/install -D -m 644 udev-md-clustered-confirm-device.rules /lib/udev/rules.d/69-md-clustered-confirm-device.rules
/usr/bin/install -D  -m 755 mdadm /sbin/mdadm
/usr/bin/install -D  -m 755 mdmon /sbin/mdmon
Testing on linux-5.4.0-rc2-00010-gefcfec579f6139 kernel
/lkp/benchmarks/mdadm-selftests/tests/12imsm-r0_2d-grow-r0_3d... 
	ERROR: dmesg prints errors when testing 12imsm-r0_2d-grow-r0_3d! 

FAILED - see /var/tmp/12imsm-r0_2d-grow-r0_3d.log and /var/tmp/fail12imsm-r0_2d-grow-r0_3d.log for details
Testing on linux-5.4.0-rc2-00010-gefcfec579f6139 kernel
/lkp/benchmarks/mdadm-selftests/tests/12imsm-r0_2d-grow-r0_4d... 
	ERROR: dmesg prints errors when testing 12imsm-r0_2d-grow-r0_4d! 

FAILED - see /var/tmp/12imsm-r0_2d-grow-r0_4d.log and /var/tmp/fail12imsm-r0_2d-grow-r0_4d.log for details
Testing on linux-5.4.0-rc2-00010-gefcfec579f6139 kernel
/lkp/benchmarks/mdadm-selftests/tests/12imsm-r0_2d-grow-r0_5d... 
	ERROR: dmesg prints errors when testing 12imsm-r0_2d-grow-r0_5d! 

FAILED - see /var/tmp/12imsm-r0_2d-grow-r0_5d.log and /var/tmp/fail12imsm-r0_2d-grow-r0_5d.log for details
Testing on linux-5.4.0-rc2-00010-gefcfec579f6139 kernel
/lkp/benchmarks/mdadm-selftests/tests/12imsm-r0_3d-grow-r0_4d... 
	ERROR: dmesg prints errors when testing 12imsm-r0_3d-grow-r0_4d! 

FAILED - see /var/tmp/12imsm-r0_3d-grow-r0_4d.log and /var/tmp/fail12imsm-r0_3d-grow-r0_4d.log for details
Testing on linux-5.4.0-rc2-00010-gefcfec579f6139 kernel
/lkp/benchmarks/mdadm-selftests/tests/12imsm-r5_3d-grow-r5_4d... succeeded
Testing on linux-5.4.0-rc2-00010-gefcfec579f6139 kernel
/lkp/benchmarks/mdadm-selftests/tests/12imsm-r5_3d-grow-r5_5d... succeeded



To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        sudo bin/lkp install job.yaml           # job file is attached in this email
        bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
        sudo bin/lkp run generated-yaml-file

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.


#regzbot introduced: efcfec579f

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp