Re: KASAN: null-ptr-deref Write in blk_mq_map_swqueue

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To: syzbot <syzbot+313d95e8a7a49263f88d@xxxxxxxxxxxxxxxxxxxxxxxxx>, a@xxxxxxxxxxx, b.a.t.m.a.n@xxxxxxxxxxxxxxxxxxxxxx, davem@xxxxxxxxxxxxx, dongli.zhang@xxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, mareklindner@xxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, sven@xxxxxxxxxxxxx, sw@xxxxxxxxxxxxxxxxxx, syzkaller-bugs@xxxxxxxxxxxxxxxx, viro@xxxxxxxxxxxxxxxxxx
Subject: Re: KASAN: null-ptr-deref Write in blk_mq_map_swqueue
From: Jens Axboe <axboe@xxxxxxxxx>
Date: Fri, 27 Mar 2020 09:06:32 -0600
In-reply-to: <0000000000004760b805a1cc03fc@google.com>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1

On 3/26/20 7:28 PM, syzbot wrote:
> syzbot has bisected this bug to:
> 
> commit 768134d4f48109b90f4248feecbeeb7d684e410c
> Author: Jens Axboe <axboe@xxxxxxxxx>
> Date:   Mon Nov 11 03:30:53 2019 +0000
> 
>     io_uring: don't do flush cancel under inflight_lock

This is definitely an utterly bogus bisect, not related at all.

-- 
Jens Axboe

References:
- Re: KASAN: null-ptr-deref Write in blk_mq_map_swqueue
  - From: syzbot

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