Re: KASAN: use-after-free Read in dump_schedule

[Dmitry Vyukov]

On Fri, Jan 22, 2021 at 6:21 PM syzbot
<syzbot+621fd33c0b53d15ee8de@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit cc00bcaa589914096edef7fb87ca5cee4a166b5c
> Author: Subash Abhinov Kasiviswanathan <subashab@xxxxxxxxxxxxxx>
> Date:   Wed Nov 25 18:27:22 2020 +0000
>
>     netfilter: x_tables: Switch synchronization to RCU
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10879d68d00000
> start commit:   59126901 Merge tag 'perf-tools-fixes-for-v5.9-2020-09-03' ..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=3c5f6ce8d5b68299
> dashboard link: https://syzkaller.appspot.com/bug?extid=621fd33c0b53d15ee8de
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=152c3af9900000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12213b71900000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: netfilter: x_tables: Switch synchronization to RCU
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

#syz fix: netfilter: x_tables: Switch synchronization to RCU