lkml.org 
[lkml]   [2018]   [Aug]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: a13c600e15 ("x86/mm/pti: Move user W+X check into .."): WARNING: CPU: 0 PID: 1 at arch/x86/mm/dump_pagetables.c:283 note_page
On Fri, Aug 10, 2018 at 06:33:42AM +0800, kernel test robot wrote:
> [ 9.635329] x86/mm: Checking user space page tables
> [ 9.636271] ------------[ cut here ]------------
> [ 9.637045] x86/mm: Found insecure W+X mapping at address (ptrval)/0xffc01000
> [ 9.638228] WARNING: CPU: 0 PID: 1 at arch/x86/mm/dump_pagetables.c:283 note_page+0x66b/0x870

Hmm, weird, this warning triggers for 32-bit non-pae. There is no
NX-bit in this mode, so the check shouldn't happen there. I'll
investigate.


Joerg

\
 
 \ /
  Last update: 2018-08-10 09:31    [W:0.055 / U:1.296 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site