From 725c4d22bbc4fcac5779963e0ff9cdf232afbb90 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Mon, 12 Sep 2016 14:37:19 +0200 Subject: ubsan: allow to disable the null sanitizer Some architectures use a hardware defined structure at address zero. Checking for a null pointer will result in many ubsan reports. Allow users to disable the null sanitizer. Signed-off-by: Christian Borntraeger Acked-by: Andrey Ryabinin Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- lib/Kconfig.ubsan | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'lib') diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan index 39494af9a84a..bc6e651df68c 100644 --- a/lib/Kconfig.ubsan +++ b/lib/Kconfig.ubsan @@ -1,6 +1,9 @@ config ARCH_HAS_UBSAN_SANITIZE_ALL bool +config ARCH_WANTS_UBSAN_NO_NULL + def_bool n + config UBSAN bool "Undefined behaviour sanity checker" help @@ -34,3 +37,11 @@ config UBSAN_ALIGNMENT This option enables detection of unaligned memory accesses. Enabling this option on architectures that support unaligned accesses may produce a lot of false positives. + +config UBSAN_NULL + bool "Enable checking of null pointers" + depends on UBSAN + default y if !ARCH_WANTS_UBSAN_NO_NULL + help + This option enables detection of memory accesses via a + null pointer. -- cgit v1.2.3