netdev - [sysfs] 1c04296f8f: suspend-stress.fail

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Message-ID: <20210701022737.GC21279@xsang-OptiPlex-9020>
Date:   Thu, 1 Jul 2021 10:27:37 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     0day robot <lkp@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        rui.zhang@...el.com, yu.c.chen@...el.com, rafael@...nel.org,
        davem@...emloft.net, kuba@...nel.org, ast@...nel.org,
        andriin@...com, daniel@...earbox.net, atenart@...nel.org,
        alobakin@...me, weiwan@...gle.com, ap420073@...il.com,
        jeyu@...nel.org, ngupta@...are.org,
        sergey.senozhatsky.work@...il.com, minchan@...nel.org,
        mcgrof@...nel.org, axboe@...nel.dk, mbenes@...e.com,
        jpoimboe@...hat.com, tglx@...utronix.de, keescook@...omium.org,
        jikos@...nel.org, rostedt@...dmis.org, peterz@...radead.org,
        linux-block@...r.kernel.org, netdev@...r.kernel.org
Subject: [sysfs]  1c04296f8f: suspend-stress.fail



Greeting,

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

commit: 1c04296f8fb2ab3c350c5889f8ac58f1690cd19c ("[PATCH v4] sysfs: fix kobject refcount to address races with kobject removal")
url: https://github.com/0day-ci/linux/commits/Luis-Chamberlain/sysfs-fix-kobject-refcount-to-address-races-with-kobject-removal/20210624-055134
base: https://git.kernel.org/cgit/linux/kernel/git/gregkh/driver-core.git 09705dcb63d269000595284b5dd7f5c938d647b9

in testcase: suspend-stress
version: 
with following parameters:

	mode: mem
	iterations: 10



on test machine: 4 threads Ivy Bridge 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 <oliver.sang@...el.com>

SUSPEND RESUME TEST STARTED
Suspend to mem 1/10:
/usr/bin/wget -q --timeout=1800 --tries=1 --local-encoding=UTF-8 http://internal-lkp-server:80/~lkp/cgi-bin/lkp-jobfile-append-var?job_file=/lkp/jobs/scheduled/lkp-ivb-toshiba1/suspend-stress-10-mem-debian-x86_64-20180403.cgz-1c04296f8fb2ab3c350c5889f8ac58f1690cd19c-20210628-95711-737wjl-19.yaml&job_state=suspending-1/10 -O /dev/null
Failed



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 split-job --compatible job.yaml  # generate the yaml file for lkp run
        bin/lkp run                    generated-yaml-file



---
0DAY/LKP+ Test Infrastructure                   Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org       Intel Corporation

Thanks,
Oliver Sang


View attachment "config-5.13.0-rc6-00030-g1c04296f8fb2" of type "text/plain" (174182 bytes)

View attachment "job-script" of type "text/plain" (5143 bytes)

Download attachment "kmsg.xz" of type "application/x-xz" (30736 bytes)

View attachment "suspend-stress" of type "text/plain" (392 bytes)

View attachment "job.yaml" of type "text/plain" (4139 bytes)