Re: [syzbot] [batman?] [bpf?] possible deadlock in lock_timer_base

[Aleksandr Nogikh]

Hi Sven,

On Tue, Mar 19, 2024 at 2:19 PM Sven Eckelmann <sven@xxxxxxxxxxxxx> 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
>
> --