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powerpc: don't fortify prom_init

prom_init is a bit special; in theory it should be able to be linked
separately to the kernel.  To keep this from getting too complex, the
symbols that prom_init.c uses are checked.

Fortification adds symbols, and it gets quite messy as it includes
things like panic().  So just don't fortify prom_init.c for now.

Link: http://lkml.kernel.org/r/1497903987-21002-6-git-send-email-keescook@chromium.org
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Daniel Axtens 2017-07-12 14:36:04 -07:00 committed by Linus Torvalds
parent 4c93496f18
commit 054f367a32

View File

@ -15,6 +15,9 @@
#undef DEBUG_PROM
/* we cannot use FORTIFY as it brings in new symbols */
#define __NO_FORTIFY
#include <stdarg.h>
#include <linux/kernel.h>
#include <linux/string.h>