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

commit: 3f423f3a030af232e5bcf9ec9336544b1bad0cf1 ("[PATCH v2] hibernate: Allow uswsusp to write to swap")
url: https://github.com/0day-ci/linux/commits/Domenico-Andreoli/hibernate-Allow-uswsusp-to-write-to-swap/20200305-052142


in testcase: xfstests
with following parameters:

	disk: 4HDD
	fs: ext4
	test: generic-group01

test-description: xfstests is a regression test suite for xfs and other files ystems.
test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git


on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G

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>

2020-03-10 14:09:23 export TEST_DIR=/fs/vda
2020-03-10 14:09:23 export TEST_DEV=/dev/vda
2020-03-10 14:09:23 export FSTYP=ext4
2020-03-10 14:09:23 export SCRATCH_MNT=/fs/scratch
2020-03-10 14:09:23 mkdir /fs/scratch -p
2020-03-10 14:09:23 export SCRATCH_DEV=/dev/vdd
2020-03-10 14:09:23 sed "s:^:generic/:" //lkp/benchmarks/xfstests/tests/generic-group01 | grep -F -f merged_ignored_files
2020-03-10 14:09:23 sed "s:^:generic/:" //lkp/benchmarks/xfstests/tests/generic-group01 | grep -v -F -f merged_ignored_files
2020-03-10 14:09:23 ./check generic/002 generic/041 generic/082 generic/114 generic/146 generic/182 generic/212 generic/244 generic/277 generic/309 generic/339 generic/371 generic/405 generic/436 generic/473 generic/508 generic/540 generic/570
FSTYP         -- ext4
PLATFORM      -- Linux/x86_64 vm-snb-48 5.6.0-rc4-00057-g3f423f3a030af #1 SMP Thu Mar 5 23:37:29 CST 2020
MKFS_OPTIONS  -- /dev/vdd
MOUNT_OPTIONS -- -o acl,user_xattr /dev/vdd /fs/scratch

generic/002	 1s
generic/041	 22s
generic/082	 18s
generic/114	 2s
generic/146	[not run] Reflink not supported by test filesystem type: ext4
generic/182	[not run] Dedupe not supported by test filesystem type: ext4
generic/212	 1s
generic/244	 15s
generic/277	 10s
generic/309	 3s
generic/339	 11s
generic/371	 18s
generic/405	 62s
generic/436	 0s
generic/473	[not run] xfs_io fiemap ranged support is missing
generic/508	[not run] xfs_io statx  support is missing
generic/540	[not run] Reflink not supported by scratch filesystem type: ext4
generic/570	- output mismatch (see /lkp/benchmarks/xfstests/results//generic/570.out.bad)
    --- tests/generic/570.out	2020-03-05 16:38:54.000000000 +0800
    +++ /lkp/benchmarks/xfstests/results//generic/570.out.bad	2020-03-10 14:12:24.293588385 +0800
    @@ -1,12 +1,13 @@
     QA output created by 570
     verb 1
    -pwrite: Text file busy
     verb 2
     mmap: Text file busy
     verb 3
     Caught signal 7, terminating...
    ...
    (Run 'diff -u /lkp/benchmarks/xfstests/tests/generic/570.out /lkp/benchmarks/xfstests/results//generic/570.out.bad'  to see the entire diff)
Ran: generic/002 generic/041 generic/082 generic/114 generic/146 generic/182 generic/212 generic/244 generic/277 generic/309 generic/339 generic/371 generic/405 generic/436 generic/473 generic/508 generic/540 generic/570
Not run: generic/146 generic/182 generic/473 generic/508 generic/540
Failures: generic/570
Failed 1 of 18 tests




To reproduce:

        # build kernel
	cd linux
	cp config-5.6.0-rc4-00057-g3f423f3a030af .config
	make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
	make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
	cd <mod-install-dir>
	find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz


        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email



Thanks,
Rong Chen