Greeting, FYI, we noticed the following commit (built with gcc-7): commit: 56939e014a6c212b317414faa307029e2e80c3b9 ("hibernate: Allow uswsusp to write to swap") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: xfstests with following parameters: disk: 4HDD fs: xfs test: generic-group29 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(a)intel.com&gt; 2020-04-15 14:56:42 export TEST_DIR=/fs/vda 2020-04-15 14:56:42 export TEST_DEV=/dev/vda 2020-04-15 14:56:42 export FSTYP=xfs 2020-04-15 14:56:42 export SCRATCH_MNT=/fs/scratch 2020-04-15 14:56:42 mkdir /fs/scratch -p 2020-04-15 14:56:42 export SCRATCH_DEV=/dev/vdd 2020-04-15 14:56:42 export SCRATCH_LOGDEV=/dev/vdb meta-data=/dev/vda isize=512 agcount=4, agsize=16777216 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1, sparse=0, rmapbt=0, reflink=1 data = bsize=4096 blocks=67108864, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal log bsize=4096 blocks=32768, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 2020-04-15 14:56:42 export MKFS_OPTIONS=-mreflink=1 2020-04-15 14:56:42 sed "s:^:generic/:" //lkp/benchmarks/xfstests/tests/generic-group29 2020-04-15 14:56:43 ./check generic/039 generic/080 generic/111 generic/143 generic/179 generic/210 generic/242 generic/275 generic/307 generic/337 generic/369 generic/402 generic/435 generic/472 generic/508 generic/540 generic/570 FSTYP -- xfs (debug) PLATFORM -- Linux/x86_64 vm-snb-61 5.6.0-rc4-00001-g56939e014a6c2 #1 SMP Tue Mar 24 05:59:06 CST 2020 MKFS_OPTIONS -- -f -mreflink=1 /dev/vdd MOUNT_OPTIONS -- /dev/vdd /fs/scratch generic/039 3s generic/080 3s generic/111 1s generic/143 6s generic/179 1s generic/210 1s generic/242 13s generic/275 9s generic/307 3s generic/337 1s generic/369 [not run] mkfs.xfs doesn't have richacl feature generic/402 [not run] xfs_io utimes support is missing generic/435 [not run] xfs_io set_encpolicy support is missing generic/472 2s generic/508 [not run] xfs_io statx support is missing generic/540 2s generic/570 - output mismatch (see /lkp/benchmarks/xfstests/results//generic/570.out.bad) --- tests/generic/570.out 2020-04-09 10:45:28.000000000 +0800 +++ /lkp/benchmarks/xfstests/results//generic/570.out.bad 2020-04-15 14:57:33.721046590 +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/039 generic/080 generic/111 generic/143 generic/179 generic/210 generic/242 generic/275 generic/307 generic/337 generic/369 generic/402 generic/435 generic/472 generic/508 generic/540 generic/570 Not run: generic/369 generic/402 generic/435 generic/508 Failures: generic/570 Failed 1 of 17 tests To reproduce: # build kernel cd linux cp config-5.6.0-rc4-00001-g56939e014a6c2 .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