Re: [syzbot] WARNING: refcount bug in mm_update_next_owner

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Subject: Re: [syzbot] WARNING: refcount bug in mm_update_next_owner
From: Jens Axboe <axboe@xxxxxxxxx>
Date: Mon, 16 Jan 2023 11:01:20 -0700
Cc: akpm@xxxxxxxxxxxxxxxxxxxx, arnd@xxxxxxxx, brauner@xxxxxxxxxx, ebiederm@xxxxxxxxxxxx, keescook@xxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, syzkaller-bugs@xxxxxxxxxxxxxxxx
In-reply-to: <CAG48ez23_TUMENLmi5X4F61vb6ZNiL+mfz6YE96U4Y7bgvYnSg@mail.gmail.com>
User-agent: Mozilla/5.0 (X11; Linux aarch64; rv:102.0) Gecko/20100101 Thunderbird/102.6.0

On 1/16/23 10:53 AM, Jann Horn wrote:
> All 5 console logs listed on the syzkaller dashboard for this one have
> io-uring with IORING_OP_POLL_ADD somewhere. Could that be related?

It was just due to a buggy patch that's long since been fixed.

#syz invalid

-- 
Jens Axboe

References:
- Re: [syzbot] WARNING: refcount bug in mm_update_next_owner
  - From: Jann Horn

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