[PATCH] ARM: ubsan: select ARCH_HAS_UBSAN_SANITIZE_ALL

[Florian Fainelli]

From: Seung-Woo Kim <sw0312.kim at samsung.com>

To enable UBSAN on ARM, this patch enables ARCH_HAS_UBSAN_SANITIZE_ALL
from arm confiuration. Basic kernel bootup test is passed on arm with
CONFIG_UBSAN_SANITIZE_ALL enabled.

Signed-off-by: Seung-Woo Kim <sw0312.kim at samsung.com>
[florian: rebased against v6.0-rc7]
Signed-off-by: Florian Fainelli <f.fainelli at gmail.com>
---
 arch/arm/Kconfig                  | 1 +
 arch/arm/boot/compressed/Makefile | 1 +
 arch/arm/vdso/Makefile            | 1 +
 3 files changed, 3 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 87badeae3181..c90aa58eab7f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -27,6 +27,7 @@ config ARM
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K
 	select ARCH_HAS_GCOV_PROFILE_ALL
 	select ARCH_KEEP_MEMBLOCK
+	select ARCH_HAS_UBSAN_SANITIZE_ALL
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select ARCH_NO_SG_CHAIN if !ARM_HAS_SG_CHAIN
 	select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 41bcbb460fac..2cc2af13779e 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -27,6 +27,7 @@ KASAN_SANITIZE		:= n
 
 # Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
 KCOV_INSTRUMENT		:= n
+UBSAN_SANITIZE		:= n
 
 #
 # Architecture dependencies
diff --git a/arch/arm/vdso/Makefile b/arch/arm/vdso/Makefile
index 8ca1c9f262a2..a7ec06ce3785 100644
--- a/arch/arm/vdso/Makefile
+++ b/arch/arm/vdso/Makefile
@@ -37,6 +37,7 @@ endif
 
 # Disable gcov profiling for VDSO code
 GCOV_PROFILE := n
+UBSAN_SANITIZE := n
 
 # Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
 KCOV_INSTRUMENT := n
-- 
2.25.1