linux-kernel - Re: general protection fault in debugfs_create

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Message-ID: <CAGXu5j+TTQPGZC3QR1MzX16LT9rypAzMjm15DU39Kfz+jx-p7A@mail.gmail.com>
Date:   Fri, 1 Feb 2019 21:30:54 +1300
From:   Kees Cook <keescook@...omium.org>
To:     syzbot <syzbot+a9d09761be47db706560@...kaller.appspotmail.com>
Cc:     Jens Axboe <axboe@...nel.dk>,
        linux-block <linux-block@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: general protection fault in debugfs_create_files

On Thu, Jan 31, 2019 at 7:53 AM syzbot
<syzbot+a9d09761be47db706560@...kaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:    02495e76ded5 Add linux-next specific files for 20190130
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=172ed528c00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a2b2e9c0bc43c14d
> dashboard link: https://syzkaller.appspot.com/bug?extid=a9d09761be47db706560
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=149209ef400000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13e00c2f400000

#syz fix: blk-mq: protect debugfs_create_files() from failures

-- 
Kees Cook