netdev - Re: [syzbot] [net?] INFO: rcu detected stall in neigh_timer

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Message-ID: <CANn89iL0eakKDx9WvrP5zmMJV6=N75PAuTtDx3M=VfUbpXs4xQ@mail.gmail.com>
Date: Fri, 13 Sep 2024 11:08:31 +0200
From: Eric Dumazet <edumazet@...gle.com>
To: syzbot <syzbot+5127feb52165f8ab165b@...kaller.appspotmail.com>
Cc: davem@...emloft.net, gregkh@...uxfoundation.org, kuba@...nel.org, 
	linux-kernel@...r.kernel.org, marcello.bauer@...ements.com, 
	netdev@...r.kernel.org, pabeni@...hat.com, stern@...land.harvard.edu, 
	sylv@...v.io, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [net?] INFO: rcu detected stall in neigh_timer_handler (8)

On Fri, Sep 13, 2024 at 4:47 AM syzbot
<syzbot+5127feb52165f8ab165b@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 22f00812862564b314784167a89f27b444f82a46
> Author: Alan Stern <stern@...land.harvard.edu>
> Date:   Fri Jun 14 01:30:43 2024 +0000
>
>     USB: class: cdc-wdm: Fix CPU lockup caused by excessive log messages
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17eae0a9980000
> start commit:   dc772f8237f9 Merge tag 'mm-hotfixes-stable-2024-06-07-15-2..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=333ebe38d43c42e2
> dashboard link: https://syzkaller.appspot.com/bug?extid=5127feb52165f8ab165b
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17398dce980000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=112fa5ac980000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: USB: class: cdc-wdm: Fix CPU lockup caused by excessive log messages
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

#syz fix: USB: class: cdc-wdm: Fix CPU lockup caused by excessive log messages