From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:38086 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758706AbcILMh7 (ORCPT ); Mon, 12 Sep 2016 08:37:59 -0400 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u8CCWTYd013571 for ; Mon, 12 Sep 2016 08:37:58 -0400 Received: from e06smtp09.uk.ibm.com (e06smtp09.uk.ibm.com [195.75.94.105]) by mx0b-001b2d01.pphosted.com with ESMTP id 25ccatyt9y-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 12 Sep 2016 08:37:58 -0400 Received: from localhost by e06smtp09.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 12 Sep 2016 13:37:56 +0100 From: Christian Borntraeger Subject: [PATCH 2/2] s390/ubsan: enable UBSAN for s390 Date: Mon, 12 Sep 2016 14:37:20 +0200 In-Reply-To: <1473683840-8700-1-git-send-email-borntraeger@de.ibm.com> References: <1473683840-8700-1-git-send-email-borntraeger@de.ibm.com> Message-Id: <1473683840-8700-3-git-send-email-borntraeger@de.ibm.com> Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org Cc: Heiko Carstens , Martin Schwidefsky , Michal Marek , Andrey Ryabinin , Yang Shi , Andrew Morton , Christian Borntraeger 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: Christian Borntraeger --- arch/s390/Kconfig | 2 ++ arch/s390/boot/compressed/Makefile | 1 + arch/s390/kernel/Makefile | 3 +++ arch/s390/kernel/vdso32/Makefile | 3 ++- arch/s390/kernel/vdso64/Makefile | 3 ++- 5 files changed, 10 insertions(+), 2 deletions(-) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index e49ca114..5862a93 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -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 diff --git a/arch/s390/boot/compressed/Makefile b/arch/s390/boot/compressed/Makefile index 13723c3..66f42bb 100644 --- a/arch/s390/boot/compressed/Makefile +++ b/arch/s390/boot/compressed/Makefile @@ -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 $(obj)/piggy.o diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index 8bc18eb..30407e6 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -48,6 +48,9 @@ AFLAGS_head.o += -march=z900 endif GCOV_PROFILE_sclp.o := n GCOV_PROFILE_als.o := n +UBSAN_SANITIZE_als.o := n +UBSAN_SANITIZE_early.o := n +UBSAN_SANITIZE_sclp.o := n obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile index 6814545..6cc9478 100644 --- a/arch/s390/kernel/vdso32/Makefile +++ b/arch/s390/kernel/vdso32/Makefile @@ -24,8 +24,9 @@ obj-y += vdso32_wrapper.o extra-y += vdso32.lds CPPFLAGS_vdso32.lds += -P -C -U$(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 : $(obj)/vdso32.so diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile index 0b0fd22..2d54c18 100644 --- a/arch/s390/kernel/vdso64/Makefile +++ b/arch/s390/kernel/vdso64/Makefile @@ -24,8 +24,9 @@ obj-y += vdso64_wrapper.o extra-y += vdso64.lds CPPFLAGS_vdso64.lds += -P -C -U$(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 -- 2.5.5