Re: [syzbot] Monthly io-uring report

[Eric Biggers <ebiggers@kernel.org>]

On Mon, Mar 27, 2023 at 04:01:54AM -0700, syzbot wrote:
> Hello io-uring maintainers/developers,
> 
> This is a 30-day syzbot report for the io-uring subsystem.
> All related reports/information can be found at:
> https://syzkaller.appspot.com/upstream/s/io-uring
> 
> During the period, 5 new issues were detected and 0 were fixed.
> In total, 49 issues are still open and 105 have been fixed so far.
> 
> Some of the still happening issues:
> 
> Crashes Repro Title
> 3393    Yes   WARNING in io_ring_exit_work
>               https://syzkaller.appspot.com/bug?extid=00e15cda746c5bc70e24
> 3241    Yes   general protection fault in try_to_wake_up (2)
>               https://syzkaller.appspot.com/bug?extid=b4a81dc8727e513f364d
> 1873    Yes   WARNING in split_huge_page_to_list (2)
>               https://syzkaller.appspot.com/bug?extid=07a218429c8d19b1fb25
> 772     Yes   INFO: task hung in io_ring_exit_work
>               https://syzkaller.appspot.com/bug?extid=93f72b3885406bb09e0d
> 718     Yes   KASAN: use-after-free Read in io_poll_remove_entries
>               https://syzkaller.appspot.com/bug?extid=cd301bb6523ea8cc8ca2
> 443     Yes   KMSAN: uninit-value in io_req_cqe_overflow
>               https://syzkaller.appspot.com/bug?extid=12dde80bf174ac8ae285
> 73      Yes   INFO: task hung in io_wq_put_and_exit (3)
>               https://syzkaller.appspot.com/bug?extid=adb05ed2853417be49ce
> 38      Yes   KASAN: use-after-free Read in nfc_llcp_find_local
>               https://syzkaller.appspot.com/bug?extid=e7ac69e6a5d806180b40
> 
> ---
> This report is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@googlegroups.com.

Thanks for getting syzbot to classify reports by subsystem and send these
reminders!  These should be very helpful over time.

One thing that is missing in these reminders is a mention of how to change the
subsystem of miscategorized bugs.  Yes, it's in https://goo.gl/tpsmEJ halfway
down the page, but it's not obvious.

I think adding something like "See https://goo.gl/tpsmEJ#subsystems for how to
change the subsystem of miscategorized reports" would be helpful.  Probably not
in all syzbot emails, but just in these remainder emails.

- Eric