On Tue, Oct 04, 2022 at 11:44:16AM +0300, Mike Rapoport wrote:

On Mon, Oct 03, 2022 at 04:59:43PM -0700, Kees Cook wrote:

quoted

On Thu, Sep 29, 2022 at 03:29:34PM -0700, Rick Edgecombe wrote:

quoted

From: Yu-cheng Yu <redacted>

Some applications (like GDB and CRIU) would like to tweak CET state via

Eee. Does GDB really need this? Can we make this whole thing
CONFIG-depend on CRIU?

GDB, at least its Intel fork uses this. I don't see how they can jump
between frames without an ability to modify shadow stack contents.

Last I looked they used NT_X86_CET to update SSP and ptrace(POKEDATA) to
write to the shadow stack.

Okay, thanks! I appreciate having specific examples. :)

-- 
Kees Cook