Re: 9f4835fb96 ("x86/fpu: Tighten validation of user-supplied .."): Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

From: Ingo Molnar
Date: Mon Sep 25 2017 - 10:55:18 EST



* Fengguang Wu <wfg@xxxxxxxxxxxxxxx> wrote:

> On Mon, Sep 25, 2017 at 10:20:13AM +0800, kernel test robot wrote:
> > Hi Ingo,
> >
> > On your request I'm resending the report here, with attached dmesg,
> > kconfig and reproduce script.
> >
> > I'll go on to test your split up commits, too.
> >
> > https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/fpu
>
> It looks 6fc19a42 ("x86/fpu: Use validate_xstate_header() to validate
> the xstate_header in sanitize_restored_xstate()") is the first bad commit.

Thank you! Could you check that the latest tip:master or tip:WIP.x86/fpu
(9cff7344187e) fixes this crash?

Thanks,

Ingo