[PATCH 15/22] drivers/misc/lkdtm: disable LTO for rodata.o

Sami Tolvanen samitolvanen at google.com
Wed Jun 24 16:31:53 EDT 2020


Disable LTO for rodata.o to allow objcopy to be used to
manipulate sections.

Signed-off-by: Sami Tolvanen <samitolvanen at google.com>
Acked-by: Kees Cook <keescook at chromium.org>
---
 drivers/misc/lkdtm/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/misc/lkdtm/Makefile b/drivers/misc/lkdtm/Makefile
index c70b3822013f..dd4c936d4d73 100644
--- a/drivers/misc/lkdtm/Makefile
+++ b/drivers/misc/lkdtm/Makefile
@@ -13,6 +13,7 @@ lkdtm-$(CONFIG_LKDTM)		+= cfi.o
 
 KASAN_SANITIZE_stackleak.o	:= n
 KCOV_INSTRUMENT_rodata.o	:= n
+CFLAGS_REMOVE_rodata.o		+= $(CC_FLAGS_LTO)
 
 OBJCOPYFLAGS :=
 OBJCOPYFLAGS_rodata_objcopy.o	:= \
-- 
2.27.0.212.ge8ba1cc988-goog




More information about the linux-arm-kernel mailing list