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Date:   Wed, 14 Sep 2022 15:12:26 +0800
From:   kernel test robot <>
To:     Jeff Layton <>
CC:     <>, <>,
        Lukas Czerner <>, Jan Kara <>,
        Christian Brauner <>,
Subject: [ext4] 87919e97c0:


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

commit: 87919e97c0218b758f328e0dc9c4f359b9ba1cc5 ("ext4: fix i_version handling in ext4") iversion

in testcase: xfstests
version: xfstests-x86_64-c1144bf-1_20220906
with following parameters:

	disk: 4HDD
	fs: ext4
	test: generic-group-00

test-description: xfstests is a regression test suite for xfs and other files ystems.
test-url: git://

on test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz (Ivy Bridge) with 16G memory

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

2022-09-14 05:00:35 ./check -E tests/exclude/ext4 generic/001 generic/002 generic/003 generic/004 generic/005 generic/006 generic/007 generic/008 generic/009 generic/010 generic/011 generic/012 generic/013 generic/014 generic/015 generic/016 generic/018 generic/019
FSTYP         -- ext4
PLATFORM      -- Linux/x86_64 lkp-ivb-d01 6.0.0-rc4-00058-g87919e97c021 #1 SMP Sat Sep 10 17:40:10 CST 2022
MKFS_OPTIONS  -- -F /dev/sda4
MOUNT_OPTIONS -- -o acl,user_xattr /dev/sda4 /fs/scratch
generic/018       [failed, exit status 1]- output mismatch (see /lkp/benchmarks/xfstests/results//generic/018.out.bad)
    --- tests/generic/018.out	2022-09-06 02:42:28.000000000 +0000
    +++ /lkp/benchmarks/xfstests/results//generic/018.out.bad	2022-09-14 05:03:57.541220154 +0000
    @@ -11,9 +11,5 @@
     Write backwards sync, but contiguous - should defrag to 1 extent
     Before: in_range(5, 10)
     After: 1
    -Write backwards sync leaving holes - defrag should do nothing
    -Before: 16
    -After: 16
    -Write forwards sync leaving holes - defrag should do nothing
    (Run 'diff -u /lkp/benchmarks/xfstests/tests/generic/018.out /lkp/benchmarks/xfstests/results//generic/018.out.bad'  to see the entire diff)
Failures: generic/018

If you fix the issue, kindly add following tag
Reported-by: kernel test robot <>

To reproduce:

        git clone
        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.

0-DAY CI Kernel Test Service

View attachment "config-6.0.0-rc4-00058-g87919e97c021" of type "text/plain" (168270 bytes)

View attachment "job-script" of type "text/plain" (5841 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (4464 bytes)

View attachment "xfstests" of type "text/plain" (2220 bytes)

View attachment "job.yaml" of type "text/plain" (4817 bytes)

View attachment "reproduce" of type "text/plain" (917 bytes)

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