netdev - Re: [syzbot] [net?] INFO: task hung in new_device

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Message-Id: <20240928000657.1247-1-hdanton@sina.com>
Date: Sat, 28 Sep 2024 08:06:57 +0800
From: Hillf Danton <hdanton@...a.com>
To: Eric Dumazet <edumazet@...gle.com>
Cc: syzbot <syzbot+05f9cecd28e356241aba@...kaller.appspotmail.com>,
	linux-kernel@...r.kernel.org,
	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	Boqun Feng <boqun.feng@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	netdev@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [net?] INFO: task hung in new_device_store (5)

On Fri, 27 Sep 2024 13:54:59 +0200 Eric Dumazet <edumazet@...gle.com>
> On Fri, Sep 27, 2024 at 1:44 PM Hillf Danton <hdanton@...a.com> wrote:
> >
> > On Fri, 27 Sep 2024 13:24:54 +0200 Eric Dumazet <edumazet@...gle.com>
> > > I suggest you look at why we have to use rtnl_trylock()
> > >
> > > If you know better, please send patches to remove all instances.
> >
> > No patch is needed before you show us deadlock. I suspect you could
> > spot a case where lockdep fails to report deadlock.
> 
> Please try to not educate maintainers about their stuff.
> 
Is this the typical dude style in Paris when showing deadlock?

> lockdep is usually right. And here there is an actua syzbot report.

The word maintainer is abused in this case.