lkml.org 
[lkml]   [2020]   [May]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v10 01/26] Documentation/x86: Add CET description
On Sat, May 16, 2020 at 03:09:22PM +0100, Andrew Cooper wrote:

> Sadly, the same is not true for kernel shadow stacks.
>
> SSP is 0 after SYSCALL, SYSENTER and CLRSSBSY, and you've got to be
> careful to re-establish the shadow stack before a CALL, interrupt or
> exception tries pushing a word onto the shadow stack at 0xfffffffffffffff8.

Oh man, I can only imagine the joy that brings to #NM and friends :-(

\
 
 \ /
  Last update: 2020-05-22 18:54    [W:0.119 / U:35.984 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site