netdev - Re: [syzbot] INFO: task hung in linkwatch

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Date:   Thu, 12 May 2022 15:26:25 +0200
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+96ff6cfc4551fcc29342@...kaller.appspotmail.com>
Cc:     allison@...utok.net, andrew@...n.ch, aviad.krawczyk@...wei.com,
        axboe@...nel.dk, davem@...emloft.net, gregkh@...uxfoundation.org,
        hdanton@...a.com, io-uring@...r.kernel.org,
        johannes.berg@...el.com, johannes@...solutions.net,
        kuba@...nel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
        linyunsheng@...wei.com, luobin9@...wei.com, netdev@...r.kernel.org,
        pabeni@...hat.com, phind.uet@...il.com,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de,
        viro@...iv.linux.org.uk, xiaoguang.wang@...ux.alibaba.com
Subject: Re: [syzbot] INFO: task hung in linkwatch_event (2)

On Tue, 5 Apr 2022 at 09:38, syzbot
<syzbot+96ff6cfc4551fcc29342@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 563fbefed46ae4c1f70cffb8eb54c02df480b2c2
> Author: Nguyen Dinh Phi <phind.uet@...il.com>
> Date:   Wed Oct 27 17:37:22 2021 +0000
>
>     cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1048725f700000
> start commit:   dd86e7fa07a3 Merge tag 'pci-v5.11-fixes-2' of git://git.ke..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=e83e68d0a6aba5f6
> dashboard link: https://syzkaller.appspot.com/bug?extid=96ff6cfc4551fcc29342
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11847bc4d00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1267e5a0d00000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: cfg80211: call cfg80211_stop_ap when switch from P2P_GO type

Looks possible:

#syz fix: cfg80211: call cfg80211_stop_ap when switch from P2P_GO type