Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Subject: Re: BUG: unable to handle kernel NULL pointer dereference in
 loop_rw_iter
To:     syzbot <syzbot+1abbd16e49910f6bbe45@syzkaller.appspotmail.com>,
        io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com,
        viro@zeniv.linux.org.uk
References: <00000000000066583105ac87dbf4@google.com>
From:   Jens Axboe <axboe@kernel.dk>
Message-ID: <f81cc90f-1d09-4a05-1619-02d44189f03a@kernel.dk>
Date:   Mon, 10 Aug 2020 10:00:59 -0600
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.10.0
MIME-Version: 1.0
In-Reply-To: <00000000000066583105ac87dbf4@google.com>
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On 8/10/20 9:46 AM, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    9420f1ce Merge tag 'pinctrl-v5.9-1' of git://git.kernel.or..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=13662f62900000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=72cf85e4237850c8
> dashboard link: https://syzkaller.appspot.com/bug?extid=1abbd16e49910f6bbe45
> compiler:       gcc (GCC) 10.1.0-syz 20200507
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15929006900000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15e196aa900000
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+1abbd16e49910f6bbe45@syzkaller.appspotmail.com

Already fixed, just not upstream yet:

https://git.kernel.dk/cgit/linux-block/commit/?h=io_uring-5.9&id=2dd2111d0d383df104b144e0d1f6b5a00cb7cd88

-- 
Jens Axboe