Re: [PATCH] kbuild: Abort build on bad stack protector flag

From: Ingo Molnar
Date: Sat Jul 09 2016 - 08:03:19 EST

* Kees Cook <keescook@xxxxxxxxxxxx> wrote:

> Before, the stack protector flag was sanity checked before .config had
> been reprocessed. This meant the build couldn't be aborted early, and
> only a warning could be emitted followed later by the compiler blowing
> up with an unknown flag. This has caused a lot of confusion over time,
> so this splits the flag selection from sanity checking and performs the
> sanity checking after the make has been restarted from a reprocessed
> .config, so builds can be aborted as early as possible now.
> Additionally moves the x86-specific sanity check to the same location,
> since it suffered from the same warn-then-wait-for-compiler-failure
> problem.
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
> ---
> Makefile | 69 +++++++++++++++++++++++++++++++++----------------------
> arch/x86/Makefile | 8 -------
> 2 files changed, 42 insertions(+), 35 deletions(-)

What's the status of this patch? I can merge it if Michal acks the main Makefile