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/[email protected] Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Kees Cook <[email protected]> Acked-by: Michael Ellerman <[email protected]> Cc: Daniel Micay <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
laijs · Jul 12, 2017 · 054f367 · 054f367
1 parent 4c93496
commit 054f367
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
@@ -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>