On Fri, Aug 12, 2016 at 4:14 AM, Rafael J. Wysocki <raf...@kernel.org> wrote: > On Fri, Aug 12, 2016 at 7:49 AM, Borislav Petkov <b...@suse.de> wrote: >> On Thu, Aug 11, 2016 at 02:49:29PM -0700, Thomas Garnier wrote: >>> Restore the processor state before calling any other function to ensure >>> per-cpu variables can be used with KASLR memory randomization. >>> >>> Tracing functions use per-cpu variables (gs based) and one was called >>> just before restoring the processor state fully. It resulted in a double >>> fault when both the tracing & the exception handler functions tried to >>> use a per-cpu variable. >>> >>> Signed-off-by: Thomas Garnier <thgar...@google.com> >>> --- >>> Based on next-20160808 >> >> Ok, I believe before I test this, I need to apply another patch from >> Rafael. I think it is the "Always create temporary identity mapping >> correctly" thing. >> >> Yes, no? > > Yes. > >> Rafael, can you please apply everything on a test branch for us to run? > > You can simply test my linux-next branch: > > git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \ > linux-next > > That's 4.8-rc1 plus 3 fixes on top of it.
Borislav, let me know once you tested it and I will send a v2 with acked/tested.
