Greeting,

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

commit: 2229276c5283264b8c2241c1ed972bbb136cab22 ("xfs: use a separate frextents counter for rt extent reservations")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

in testcase: xfstests
version: xfstests-x86_64-46e1b83-1_20220414
with following parameters:

	disk: 4HDD
	fs: xfs
	test: xfs-external
	ucode: 0x21

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: 4 threads 1 sockets Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz with 8G 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>



xfs/187	- output mismatch (see /lkp/benchmarks/xfstests/results//xfs/187.out.bad)
    --- tests/xfs/187.out	2022-04-14 12:51:49.000000000 +0000
    +++ /lkp/benchmarks/xfstests/results//xfs/187.out.bad	2022-04-27 06:19:24.286936517 +0000
    @@ -1,3 +1,4 @@
     QA output created by 187
     Format and mount
    +Expected fragmented free rt space, found none.
     Try to write a bunch of stuff to the fragmented rt space
    ...
    (Run 'diff -u /lkp/benchmarks/xfstests/tests/xfs/187.out /lkp/benchmarks/xfstests/results//xfs/187.out.bad'  to see the entire diff)



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.



-- 
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https://01.org/lkp