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s390/kasan: avoid instrumentation of early C code 

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>
This commit is contained in:
Vasily Gorbik 2017-11-17 13:10:33 +01:00 committed by Martin Schwidefsky
parent 3484984585
commit 0a9b40911b
4 changed files with 5 additions and 0 deletions
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1
arch/s390/boot/Makefile
View File

@ -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)

1
arch/s390/boot/compressed/Makefile
View File

@ -8,6 +8,7 @@
KCOV_INSTRUMENT := n
GCOV_PROFILE := n
UBSAN_SANITIZE := n
KASAN_SANITIZE := n
obj-y := $(if $(CONFIG_KERNEL_UNCOMPRESSED),,decompressor.o) piggy.o info.o
targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2

2
arch/s390/kernel/Makefile
View File

@ -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.
#

1
drivers/s390/char/Makefile
View File

@ -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