lkml.org 
[lkml]   [2018]   [Oct]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 05/11] x86/fpu: set PKRU state for kernel threads
On 2018-10-18 13:56:24 [-0700], Dave Hansen wrote:
> > But this is not the only loophole: There is ptrace interface which is
> > used by gdb (just checked) and also bypasses PKRU. So…
>
> Bypassing protection keys is not a big deal IMNHO. In places where a
> sane one is not readily available, I'm totally fine with just
> effectively disabling it (PKRU=0) for the length of time it isn't available.

Okay, this makes things easier. Let document that for kernel threads we
use PKRU=0. This should be happening in my try right now. I double check
tomorrow just in case…

Sebastian

\
 
 \ /
  Last update: 2018-10-18 23:24    [W:0.096 / U:5.932 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site