Commit c42d8c7d authored by Christian Borntraeger's avatar Christian Borntraeger Committed by Martin Schwidefsky

s390: enable UBSAN

This enables UBSAN for s390. We have to disable the null sanitizer
as s390 code does access memory via a null pointer (the prefix page).
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: default avatarAndrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 725c4d22
......@@ -74,6 +74,7 @@ config S390
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_KCOV
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_INLINE_READ_LOCK
select ARCH_INLINE_READ_LOCK_BH
......@@ -110,6 +111,7 @@ config S390
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_WANTS_DYNAMIC_TASK_STRUCT
select ARCH_WANTS_PROT_NUMA_PROT_NONE
select ARCH_WANTS_UBSAN_NO_NULL
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS2
......
......@@ -17,6 +17,7 @@ KBUILD_CFLAGS += $(call cc-option,-mpacked-stack)
KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
GCOV_PROFILE := n
UBSAN_SANITIZE := n
OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o sclp.o ebcdic.o als.o)
OBJECTS += $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o
......
......@@ -48,6 +48,9 @@ AFLAGS_head.o += -march=z900
endif
GCOV_PROFILE_sclp.o := n
GCOV_PROFILE_als.o := n
UBSAN_SANITIZE_als.o := n
UBSAN_SANITIZE_early.o := n
UBSAN_SANITIZE_sclp.o := n
obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
......
......@@ -24,8 +24,9 @@ obj-y += vdso32_wrapper.o
extra-y += vdso32.lds
CPPFLAGS_vdso32.lds += -P -C -U$(ARCH)
# Disable gcov profiling for VDSO code
# Disable gcov profiling and ubsan for VDSO code
GCOV_PROFILE := n
UBSAN_SANITIZE := n
# Force dependency (incbin is bad)
$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so
......
......@@ -24,8 +24,9 @@ obj-y += vdso64_wrapper.o
extra-y += vdso64.lds
CPPFLAGS_vdso64.lds += -P -C -U$(ARCH)
# Disable gcov profiling for VDSO code
# Disable gcov profiling and ubsan for VDSO code
GCOV_PROFILE := n
UBSAN_SANITIZE := n
# Force dependency (incbin is bad)
$(obj)/vdso64_wrapper.o : $(obj)/vdso64.so
......
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