scripts/Makefile.kmsan - pub/scm/linux/kernel/git/sailus/linux-next - Git at Google

 # SPDX-License-Identifier: GPL-2.0
 kmsan-cflags := -fsanitize=kernel-memory

 ifdef CONFIG_KMSAN_CHECK_PARAM_RETVAL
 kmsan-cflags += -fsanitize-memory-param-retval
 endif

 export CFLAGS_KMSAN := $(kmsan-cflags)
	# SPDX-License-Identifier: GPL-2.0
	kmsan-cflags := -fsanitize=kernel-memory

	ifdef CONFIG_KMSAN_CHECK_PARAM_RETVAL
	kmsan-cflags += -fsanitize-memory-param-retval
	endif

	export CFLAGS_KMSAN := $(kmsan-cflags)