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Message-ID: <CANp29Y7SuK8P8xHa6JzAzs_NxPUN9AvFTiKfMhgLy1POGBodwA@mail.gmail.com>
Date: Tue, 19 Mar 2024 14:31:35 +0100
From: Aleksandr Nogikh <nogikh@...gle.com>
To: Sven Eckelmann <sven@...fation.org>
Cc: akpm@...ux-foundation.org, andrii@...nel.org, ast@...nel.org, 
	b.a.t.m.a.n@...ts.open-mesh.org, bpf@...r.kernel.org, christian@...uner.io, 
	daniel@...earbox.net, dvyukov@...gle.com, edumazet@...gle.com, 
	elver@...gle.com, glider@...gle.com, hdanton@...a.com, jakub@...udflare.com, 
	jannh@...gle.com, john.fastabend@...il.com, kasan-dev@...glegroups.com, 
	kuba@...nel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	mareklindner@...mailbox.ch, mark.rutland@....com, netdev@...r.kernel.org, 
	pabeni@...hat.com, shakeelb@...gle.com, syzkaller-bugs@...glegroups.com, 
	syzbot <syzbot+8983d6d4f7df556be565@...kaller.appspotmail.com>
Subject: Re: [syzbot] [batman?] [bpf?] possible deadlock in lock_timer_base

Hi Sven,

On Tue, Mar 19, 2024 at 2:19 PM Sven Eckelmann <sven@...fation.org> wrote:
>
> On Tuesday, 19 March 2024 11:33:17 CET syzbot wrote:
> > syzbot has found a reproducer for the following issue on:
> >
< ... >
>
> Sorry, this is a little bit off-topic. But how does sysbot figure out the
> subsystems (like "[batman?]"). Because neither the reproducer nor the
> backtrace nor the console output mention anything batman-adv related.

Syzbot looks at several crash reports to determine the bug subsystems
and in this case one of those crashes was pointing to
net/batman-adv/multicast.c:

https://syzkaller.appspot.com/text?tag=CrashReport&x=15afccb3280000

-- 
Aleksandr

>
> Kind regards,
>         Sven
>
> --

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