linux-kernel - Re: [syzbot] [net?] [usb?] INFO: rcu detected stall in worker

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Message-ID: <000000000000ec03e20609204362@google.com>
Date:   Wed, 01 Nov 2023 17:14:03 -0700
From:   syzbot <syzbot+225bfad78b079744fd5e@...kaller.appspotmail.com>
To:     admini@...kaller.appspotmail.com, bpf@...r.kernel.org,
        davem@...emloft.net, edumazet@...gle.com,
        gregkh@...uxfoundation.org, hdanton@...a.com, horms@...nel.org,
        jiri@...dia.com, kuba@...nel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        pabeni@...hat.com, rafael@...nel.org,
        syzkaller-bugs@...glegroups.com, twuufnxlz@...il.com
Subject: Re: [syzbot] [net?] [usb?] INFO: rcu detected stall in worker_thread (9)

syzbot has bisected this issue to:

commit c2368b19807affd7621f7c4638cd2e17fec13021
Author: Jiri Pirko <jiri@...dia.com>
Date:   Fri Jul 29 07:10:35 2022 +0000

    net: devlink: introduce "unregistering" mark and use it during devlinks iteration

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1758e1e3680000
start commit:   1c8b86a3799f Merge tag 'xsa441-6.6-tag' of git://git.kerne..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=14d8e1e3680000
console output: https://syzkaller.appspot.com/x/log.txt?x=10d8e1e3680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=11e478e28144788c
dashboard link: https://syzkaller.appspot.com/bug?extid=225bfad78b079744fd5e
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=155614de680000

Reported-by: syzbot+225bfad78b079744fd5e@...kaller.appspotmail.com
Fixes: c2368b19807a ("net: devlink: introduce "unregistering" mark and use it during devlinks iteration")

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