linux-kernel - Re: general protection fault in open_fs

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Date:   Tue, 19 Jun 2018 20:05:39 +0200
From:   David Sterba <dsterba@...e.cz>
To:     syzbot <syzbot+909a5177749d7990ffa4@...kaller.appspotmail.com>
Cc:     clm@...com, dsterba@...e.com, jbacik@...com,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: general protection fault in open_fs_devices

On Wed, Jun 06, 2018 at 06:17:02AM -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    af6c5d5e01ad Merge branch 'for-4.18' of git://git.kernel.o..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1732a6f7800000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=12ff770540994680
> dashboard link: https://syzkaller.appspot.com/bug?extid=909a5177749d7990ffa4
> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=16ba31f7800000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16d4ac8f800000
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+909a5177749d7990ffa4@...kaller.appspotmail.com

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git test-syzbot-fs-devices