From: Vasily Gorbik gor@linux.ibm.com
[ Upstream commit 0a9b40911baffac6fc9cc2d88e893585870a97f7 ]
Instrumented C code cannot run without the kasan shadow area. Exempt source code files from kasan which are running before / used during kasan initialization.
Reviewed-by: Martin Schwidefsky schwidefsky@de.ibm.com Signed-off-by: Vasily Gorbik gor@linux.ibm.com Signed-off-by: Martin Schwidefsky schwidefsky@de.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/s390/boot/Makefile | 1 + arch/s390/boot/compressed/Makefile | 1 + arch/s390/kernel/Makefile | 2 ++ drivers/s390/char/Makefile | 1 + 4 files changed, 5 insertions(+)
diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile index 9e6668ee93de8..f6a9b0c203553 100644 --- a/arch/s390/boot/Makefile +++ b/arch/s390/boot/Makefile @@ -6,6 +6,7 @@ KCOV_INSTRUMENT := n GCOV_PROFILE := n UBSAN_SANITIZE := n +KASAN_SANITIZE := n
KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR) KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR) diff --git a/arch/s390/boot/compressed/Makefile b/arch/s390/boot/compressed/Makefile index b375c6c5ae7b1..9b3d821e5b46e 100644 --- a/arch/s390/boot/compressed/Makefile +++ b/arch/s390/boot/compressed/Makefile @@ -8,6 +8,7 @@ KCOV_INSTRUMENT := n GCOV_PROFILE := n UBSAN_SANITIZE := n +KASAN_SANITIZE := n
obj-y := $(if $(CONFIG_KERNEL_UNCOMPRESSED),,head.o misc.o) piggy.o targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index b205c0ff0b220..762fc45376ffd 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -23,6 +23,8 @@ KCOV_INSTRUMENT_early_nobss.o := n UBSAN_SANITIZE_early.o := n UBSAN_SANITIZE_early_nobss.o := n
+KASAN_SANITIZE_early_nobss.o := n + # # Passing null pointers is ok for smp code, since we access the lowcore here. # diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile index c6ab34f94b1b5..3072b89785ddf 100644 --- a/drivers/s390/char/Makefile +++ b/drivers/s390/char/Makefile @@ -11,6 +11,7 @@ endif GCOV_PROFILE_sclp_early_core.o := n KCOV_INSTRUMENT_sclp_early_core.o := n UBSAN_SANITIZE_sclp_early_core.o := n +KASAN_SANITIZE_sclp_early_core.o := n
CFLAGS_sclp_early_core.o += -D__NO_FORTIFY