general protection fault in rb_erase

[Theodore Y. Ts'o]

On Tue, Sep 25, 2018 at 04:44:03PM -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    846e8dd47c26 Merge tag 'scsi-fixes' of git://git.kernel.or..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=15c874a1400000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=dfb440e26f0a6f6f
> dashboard link: https://syzkaller.appspot.com/bug?extid=e81ccd4744c6c4f71354
> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15bddd2a400000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1293d3fa400000

Fixed with this patch:

	http://patchwork.ozlabs.org/patch/978083/