[lkml]   [2020]   [Sep]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: KASLR support on ARM with Kernel 4.9 and 4.14
On Tue, 29 Sep 2020 at 01:20, Kees Cook <> wrote:

> Note that I still can't explain what you're seeing. /proc/kallsyms
> shouldn't be affected by these patches -- I would expect it to either
> report the true value or 00s.
> > I will disable kptr_restrict and check or, I will enable
> I would start with kptr_restrict=0 and see if that changes the contents
> of /proc/kallsyms. If it does, then it is the hashing. If it doesn't,
> well, we're back to square one. :)

Actually in that board, the kptr_restrict=0 already in both case: 4.9
and 4.14 Kernel boards.
In another board with 4.14 and kptr_restrict=2, I see that the
addresses are 00 always.

I further checked that when I enable this config:
then the addresses are remaining the same in every boot.
But this particular config is not present in 4.9 Kernel.
So, I think it is controlled using this config.


 \ /
  Last update: 2020-09-30 15:59    [W:0.035 / U:34.316 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site