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Subject: Re: [md] e1a86dbbbd:
 mdadm-selftests.enchmarks/mdadm-selftests/tests/07layouts.fail
From:   Junxiao Bi <junxiao.bi@oracle.com>
To:     Song Liu <songliubraving@fb.com>
Cc:     LKML <linux-kernel@vger.kernel.org>, LKP <lkp@lists.01.org>,
        kernel test robot <rong.a.chen@intel.com>
References: <20200729090451.GK23458@shao2-debian>
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 <05662f78-f442-5f1d-4423-bd206a2e8fd8@oracle.com>
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Date:   Tue, 4 Aug 2020 17:30:27 -0700
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This issue had been fixed. I send the following patch in another thread. 
Please take a look. Thank you.

[PATCH] md: get sysfs entry after redundancy attr group create

Thanks,

Junxiao.

On 8/3/20 9:00 AM, Junxiao Bi wrote:
> Hi Song,
>
> I am working on setup an env to reproduce, will update soon.
>
> Thanks,
>
> Junxiao.
>
> On 8/2/20 10:52 PM, Song Liu wrote:
>>
>>> On Jul 29, 2020, at 2:04 AM, kernel test robot 
>>> <rong.a.chen@intel.com> wrote:
>>>
>>> Greeting,
>>>
>>> FYI, we noticed the following commit (built with gcc-9):
>>>
>>> commit: e1a86dbbbd6a77f73c3d099030495fa31f181e2f ("md: fix deadlock 
>>> causing by sysfs_notify")
>>> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
>>>
>>>
>>> in testcase: mdadm-selftests
>>> with following parameters:
>>>
>>>     disk: 1HDD
>>>     test_prefix: 07layout
>>>     ucode: 0x21
>>>
>>>
>>>
>>> on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz 
>>> with 4G 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 <rong.a.chen@intel.com>
>>>
>>>
>>>
>>> 2020-07-29 01:06:34 mkdir -p /var/tmp
>>> 2020-07-29 01:06:34 mke2fs -t ext3 -b 4096 -J size=4 -q /dev/sda3
>>> 2020-07-29 01:07:36 mount -t ext3 /dev/sda3 /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-5.8.0-rc4-00129-ge1a86dbbbd6a7 kernel
>>> /lkp/benchmarks/mdadm-selftests/tests/07layouts... FAILED - see 
>>> /var/tmp/07layouts.log and /var/tmp/fail07layouts.log for details
>>> 07layouts TIMEOUT
>>>
>>>
>>>
>>> To reproduce:
>>>
>>>         git clone https://github.com/intel/lkp-tests.git
>>>         cd lkp-tests
>>>         bin/lkp install job.yaml  # job file is attached in this email
>>>         bin/lkp run     job.yaml
>>>
>>>
>>>
>>> Thanks,
>>> Rong Chen
>>>
>>> <config-5.8.0-rc4-00129-ge1a86dbbbd6a7><job-script.txt><kmsg.xz><mdadm-selftests.txt><job.yaml><reproduce.txt><07layouts.log> 
>>>
>> Hi Junxiao,
>>
>> Could you please look into this issue?
>>
>> Thanks,
>> Song
>>