V4 [PATCH 04/12] x86/CET: Extend arch_prctl syscall for CET control

[Florian Weimer]

On 08/13/2018 06:51 AM, Sergey Senozhatsky wrote:
> [    8.864561] process: tty: Unsupported common prctl 3001
> [    8.865664] expr: Unsupported prctl 3001
> [..]
> 
> Which is, maybe fine, though I'm not entirely sure since I don't
> really see ARCH_CET being supported by any arch (neither in linux-next
> nor in Linus' tree), so maybe as of now those syscalls are unneeded.

Which kernel version is that?  The above looks like a kernel bug because 
there doesn't seem to be any rate limiting.

> The part where, I believe, these -EINVAL prctls begin to backfire is
> valgrind - I can't run it anymore with glibc 2.28. It gives me the
> following error:

valgrind has already been fixed:

   https://bugs.kde.org/show_bug.cgi?id=396887

Thanks,
Florian