Re: WARNING in do_debug

From: Eric Biggers
Date: Fri Jan 26 2018 - 14:47:34 EST


On Tue, Dec 26, 2017 at 08:08:13AM +0100, 'Dmitry Vyukov' via syzkaller-bugs wrote:
> On Tue, Dec 26, 2017 at 1:55 AM, Wanpeng Li <kernellwp@xxxxxxxxx> wrote:
> > 2017-12-26 8:22 GMT+08:00 syzbot
> > <syzbot+adbefe6736a5b37af36f19ebfa8764fcdd9ddaed@xxxxxxxxxxxxxxxxxxxxxxxxx>:
> >> syzkaller has found reproducer for the following crash on
> >> 464e1d5f23cca236b930ef068c328a64cab78fb1
> >> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master
> >> compiler: gcc (GCC) 7.1.1 20170620
> >> .config is attached
> >> Raw console output is attached.
> >> C reproducer is attached
> >> syzkaller reproducer is attached. See https://goo.gl/kgGztJ
> >> for information about syzkaller reproducers
> >>
> >
> > https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?h=queue&id=ed3b37ac63a060bdc184d126c0655c1af8b6de62
> >
> > There is a fix in kvm/queue.
>
> Hi Wanpeng,
>
> syzbot does not know about the fix and still thinks that this bug is
> open. Please tell it about the fix:
>
>
> > syzbot will keep track of this bug report.
> > Once a fix for this bug is committed, please reply to this email with:
> > #syz fix: exact-commit-title
> > Note: all commands must start from beginning of the line.

#syz fix: KVM: x86: fix escape of guest dr6 to the host

Wanpeng, shouldn't this be Cc'ed to stable?

- Eric