Re: [md] e1a86dbbbd: mdadm-selftests.enchmarks/mdadm-selftests/tests/

From: Junxiao Bi
Date: Tue Aug 04 2020 - 20:31:20 EST

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



On 8/3/20 9:00 AM, Junxiao Bi wrote:
Hi Song,

I am working on setup an env to reproduce, will update soon.



On 8/2/20 10:52 PM, Song Liu wrote:

On Jul 29, 2020, at 2:04 AM, kernel test robot <rong.a.chen@xxxxxxxxx> wrote:


FYI, we noticed the following commit (built with gcc-9):

commit: e1a86dbbbd6a77f73c3d099030495fa31f181e2f ("md: fix deadlock causing by sysfs_notify") 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@xxxxxxxxx>

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
/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
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml

Rong Chen

Hi Junxiao,

Could you please look into this issue?