Re: [syzbot] INFO: rcu detected stall in ieee80211_tasklet_handler

[Dmitry Vyukov]

On Tue, 26 Oct 2021 at 23:44, syzbot
<syzbot+7bb955045fc0840decd3@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 313bbd1990b6ddfdaa7da098d0c56b098a833572
> Author: Johannes Berg <johannes.berg@xxxxxxxxx>
> Date:   Wed Sep 15 09:29:37 2021 +0000
>
>     mac80211-hwsim: fix late beacon hrtimer handling
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=151766bab00000
> start commit:   835d31d319d9 Merge tag 'media/v5.15-1' of git://git.kernel..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9c32e23fada3a0e4
> dashboard link: https://syzkaller.appspot.com/bug?extid=7bb955045fc0840decd3
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15e08125300000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14b17dde300000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: mac80211-hwsim: fix late beacon hrtimer handling
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Looks plausible:

#syz fix: mac80211-hwsim: fix late beacon hrtimer handling