1# SPDX-License-Identifier: GPL-2.0
 
 
 
 
 
 
 
 
 
 
 2
 3# Enable available and selected UBSAN features.
 4ubsan-cflags-$(CONFIG_UBSAN_ALIGNMENT)		+= -fsanitize=alignment
 5ubsan-cflags-$(CONFIG_UBSAN_BOUNDS_STRICT)	+= -fsanitize=bounds-strict
 6ubsan-cflags-$(CONFIG_UBSAN_ARRAY_BOUNDS)	+= -fsanitize=array-bounds
 7ubsan-cflags-$(CONFIG_UBSAN_LOCAL_BOUNDS)	+= -fsanitize=local-bounds
 8ubsan-cflags-$(CONFIG_UBSAN_SHIFT)		+= -fsanitize=shift
 9ubsan-cflags-$(CONFIG_UBSAN_DIV_ZERO)		+= -fsanitize=integer-divide-by-zero
10ubsan-cflags-$(CONFIG_UBSAN_UNREACHABLE)	+= -fsanitize=unreachable
11ubsan-cflags-$(CONFIG_UBSAN_BOOL)		+= -fsanitize=bool
12ubsan-cflags-$(CONFIG_UBSAN_ENUM)		+= -fsanitize=enum
13ubsan-cflags-$(CONFIG_UBSAN_TRAP)		+= -fsanitize-undefined-trap-on-error
14
15export CFLAGS_UBSAN := $(ubsan-cflags-y)
 
 
 
 
 
 
 

 1ifdef CONFIG_UBSAN
 2      CFLAGS_UBSAN += $(call cc-option, -fsanitize=shift)
 3      CFLAGS_UBSAN += $(call cc-option, -fsanitize=integer-divide-by-zero)
 4      CFLAGS_UBSAN += $(call cc-option, -fsanitize=unreachable)
 5      CFLAGS_UBSAN += $(call cc-option, -fsanitize=vla-bound)
 6      CFLAGS_UBSAN += $(call cc-option, -fsanitize=signed-integer-overflow)
 7      CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
 8      CFLAGS_UBSAN += $(call cc-option, -fsanitize=object-size)
 9      CFLAGS_UBSAN += $(call cc-option, -fsanitize=returns-nonnull-attribute)
10      CFLAGS_UBSAN += $(call cc-option, -fsanitize=bool)
11      CFLAGS_UBSAN += $(call cc-option, -fsanitize=enum)
12
13ifdef CONFIG_UBSAN_ALIGNMENT
14      CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment)
15endif
 
 
 
 
 
 
 
 
16
17ifdef CONFIG_UBSAN_NULL
18      CFLAGS_UBSAN += $(call cc-option, -fsanitize=null)
19endif
20
21      # -fsanitize=* options makes GCC less smart than usual and
22      # increase number of 'maybe-uninitialized false-positives
23      CFLAGS_UBSAN += $(call cc-option, -Wno-maybe-uninitialized)
24endif