Re: WARNING in percpu_ref_exit (2)

Dmitry Vyukov
2020-11-11T13:31:09Z

On Wed, Nov 11, 2020 at 4:09 AM syzbot
<syzbot+8c4a14856e657b43487c@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit c1e2148f8ecb26863b899d402a823dab8e26efd1
> Author: Jens Axboe <axboe@kernel.dk>
> Date: Wed Mar 4 14:25:50 2020 +0000
>
> io_uring: free fixed_file_data after RCU grace period
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=161ea46e500000
> start commit: 63849c8f Merge tag 'linux-kselftest-5.6-rc5' of git://git...
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=4527d1e2fb19fd5c
> dashboard link: https://syzkaller.appspot.com/bug?extid=8c4a14856e657b43487c
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13c30061e00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1251b731e00000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: io_uring: free fixed_file_data after RCU grace period
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

#syz fix: io_uring: free fixed_file_data after RCU grace period