[patch V4 part 1 19/36] x86/entry: Exclude low level entry code from sanitizing

Thomas Gleixner
2020-05-05T14:14:05Z

The sanitizers are not really applicable to the fragile low level entry
code. code. Entry code needs to carefully setup a normal 'runtime'
environment.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/entry/Makefile | 8 ++++++++
1 file changed, 8 insertions(+)

--- a/arch/x86/entry/Makefile
+++ b/arch/x86/entry/Makefile
@@ -3,6 +3,14 @@
# Makefile for the x86 low level entry code
#

+KASAN_SANITIZE := n
+UBSAN_SANITIZE := n
+KCOV_INSTRUMENT := n
+
+CFLAGS_REMOVE_common.o = $(CC_FLAGS_FTRACE) -fstack-protector -fstack-protector-strong
+CFLAGS_REMOVE_syscall_32.o = $(CC_FLAGS_FTRACE) -fstack-protector -fstack-protector-strong
+CFLAGS_REMOVE_syscall_64.o = $(CC_FLAGS_FTRACE) -fstack-protector -fstack-protector-strong
+
OBJECT_FILES_NON_STANDARD_entry_64_compat.o := y

CFLAGS_syscall_64.o += $(call cc-option,-Wno-override-init,)