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From: Jens Axboe <[email protected]>
To: syzbot <[email protected]>,
	[email protected], [email protected],
	[email protected], [email protected]
Subject: Re: [syzbot] BUG: unable to handle kernel NULL pointer dereference in io_do_iopoll
Date: Tue, 17 May 2022 12:34:00 -0600	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On 5/17/22 12:13 PM, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    42226c989789 Linux 5.18-rc7
> git tree:       upstream
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=125b807ef00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=902c5209311d387c
> dashboard link: https://syzkaller.appspot.com/bug?extid=1a0a53300ce782f8b3ad
> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=149eb59ef00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17cc57c6f00000
> 
> The issue was bisected to:
> 
> commit 3f1d52abf098c85b177b8c6f5b310e8347d1bc42
> Author: Jens Axboe <[email protected]>
> Date:   Tue Mar 29 16:43:56 2022 +0000
> 
>     io_uring: defer msg-ring file validity check until command issue

#syz test git://git.kernel.dk/linux-block io_uring-5.18

-- 
Jens Axboe


  reply	other threads:[~2022-05-17 18:34 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-17 18:13 [syzbot] BUG: unable to handle kernel NULL pointer dereference in io_do_iopoll syzbot
2022-05-17 18:34 ` Jens Axboe [this message]
2022-05-17 18:44   ` syzbot
2022-05-17 18:46     ` Jens Axboe
2022-05-17 19:02       ` syzbot

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