linux-kernel - Re: general protection fault in loop_validate

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Message-ID: <e9bd0998-b9ea-0028-b429-58baac69b877@I-love.SAKURA.ne.jp>
Date:   Mon, 18 Jun 2018 23:51:30 +0900
From:   Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:     syzbot <syzbot+2f228435b0b9ec0ba068@...kaller.appspotmail.com>,
        axboe@...nel.dk, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: general protection fault in loop_validate_file

On 2018/06/18 23:33, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    ce397d215ccd Linux 4.18-rc1
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=129dfccf800000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=f390986c4f7cd566
> dashboard link: https://syzkaller.appspot.com/bug?extid=2f228435b0b9ec0ba068
> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> 
> Unfortunately, I don't have any reproducer for this crash yet.

This is a known bug. We are waiting for response from Jens Axboe at
http://lkml.kernel.org/r/748bce03-afda-4ed2-13b3-1fcd01d57770@kernel.dk .

#syz dup: general protection fault in lo_ioctl (2)