linux-kernel - Re: INFO: rcu detected stall in __do

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Date:   Thu, 15 Aug 2019 17:10:01 -0700
From:   syzbot <syzbot+6593c6b8c8b66a07cd98@...kaller.appspotmail.com>
To:     alsa-devel@...a-project.org, bp@...en8.de,
        gregkh@...uxfoundation.org, hpa@...or.com,
        linux-kernel@...r.kernel.org, mingo@...hat.com, nstange@...e.de,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        srinivas.kandagatla@...aro.org, syzkaller-bugs@...glegroups.com,
        tglx@...utronix.de, vkoul@...nel.org, x86@...nel.org,
        yakui.zhao@...el.com
Subject: Re: INFO: rcu detected stall in __do_softirq

syzbot has bisected this bug to:

commit 2aeac95d1a4cc85aae57ab842d5c3340df0f817f
Author: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Date:   Tue Jun 11 10:40:41 2019 +0000

     soundwire: add module_sdw_driver helper macro

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=114b45ee600000
start commit:   882e8691 Add linux-next specific files for 20190801
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=134b45ee600000
console output: https://syzkaller.appspot.com/x/log.txt?x=154b45ee600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=466b331af3f34e94
dashboard link: https://syzkaller.appspot.com/bug?extid=6593c6b8c8b66a07cd98
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16b216b2600000

Reported-by: syzbot+6593c6b8c8b66a07cd98@...kaller.appspotmail.com
Fixes: 2aeac95d1a4c ("soundwire: add module_sdw_driver helper macro")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection