1config ARCH_HAS_UBSAN_SANITIZE_ALL 2 bool 3 4config UBSAN 5 bool "Undefined behaviour sanity checker" 6 help 7 This option enables undefined behaviour sanity checker 8 Compile-time instrumentation is used to detect various undefined 9 behaviours in runtime. Various types of checks may be enabled 10 via boot parameter ubsan_handle (see: Documentation/ubsan.txt). 11 12config UBSAN_SANITIZE_ALL 13 bool "Enable instrumentation for the entire kernel" 14 depends on UBSAN 15 depends on ARCH_HAS_UBSAN_SANITIZE_ALL 16 default y 17 help 18 This option activates instrumentation for the entire kernel. 19 If you don't enable this option, you have to explicitly specify 20 UBSAN_SANITIZE := y for the files/directories you want to check for UB. 21 22config UBSAN_ALIGNMENT 23 bool "Enable checking of pointers alignment" 24 depends on UBSAN 25 default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS 26 help 27 This option enables detection of unaligned memory accesses. 28 Enabling this option on architectures that support unalligned 29 accesses may produce a lot of false positives. 30