mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-22 03:04:34 +01:00
sys: move SAN and COVERAGE options handling to kern.mk
This allows the flags to be picked up more easily when building external modules. Sponsored by: Juniper Networks, Inc. Reviewed by: markj (earlier) Differential Revision: https://reviews.freebsd.org/D45563
This commit is contained in:
Ka Ho Ng
parent
a0618fbe19
commit
6e3875ebcf
@ -247,6 +247,86 @@ CFLAGS+= -fstack-protector
|
||||
CFLAGS+= -mretpoline
|
||||
.endif
|
||||
|
||||
#
|
||||
# Kernel Address SANitizer support
|
||||
#
|
||||
.if !empty(KASAN_ENABLED)
|
||||
SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kasan \
|
||||
-fsanitize=kernel-address
|
||||
.if ${COMPILER_TYPE} == "clang"
|
||||
SAN_CFLAGS+= -mllvm -asan-stack=true \
|
||||
-mllvm -asan-instrument-dynamic-allocas=true \
|
||||
-mllvm -asan-globals=true \
|
||||
-mllvm -asan-use-after-scope=true \
|
||||
-mllvm -asan-instrumentation-with-call-threshold=0 \
|
||||
-mllvm -asan-instrument-byval=false
|
||||
.endif
|
||||
|
||||
.if ${MACHINE_CPUARCH} == "aarch64"
|
||||
# KASAN/ARM64 TODO: -asan-mapping-offset is calculated from:
|
||||
# (VM_KERNEL_MIN_ADDRESS >> KASAN_SHADOW_SCALE_SHIFT) + $offset = KASAN_MIN_ADDRESS
|
||||
#
|
||||
# This is different than amd64, where we have a different
|
||||
# KASAN_MIN_ADDRESS, and this offset value should eventually be
|
||||
# upstreamed similar to: https://reviews.llvm.org/D98285
|
||||
#
|
||||
.if ${COMPILER_TYPE} == "clang"
|
||||
SAN_CFLAGS+= -mllvm -asan-mapping-offset=0xdfff208000000000
|
||||
.else
|
||||
SAN_CFLAGS+= -fasan-shadow-offset=0xdfff208000000000
|
||||
.endif
|
||||
.elif ${MACHINE_CPUARCH} == "amd64" && \
|
||||
${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 180000
|
||||
# Work around https://github.com/llvm/llvm-project/issues/87923, which leads to
|
||||
# an assertion failure compiling dtrace.c with asan enabled.
|
||||
SAN_CFLAGS+= -mllvm -asan-use-stack-safety=0
|
||||
.endif
|
||||
.endif # !empty(KASAN_ENABLED)
|
||||
|
||||
#
|
||||
# Kernel Concurrency SANitizer support
|
||||
#
|
||||
.if !empty(KCSAN_ENABLED)
|
||||
SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kcsan \
|
||||
-fsanitize=thread
|
||||
.endif
|
||||
|
||||
#
|
||||
# Kernel Memory SANitizer support
|
||||
#
|
||||
.if !empty(KMSAN_ENABLED)
|
||||
# Disable -fno-sanitize-memory-param-retval until interceptors have been
|
||||
# updated to work properly with it.
|
||||
MSAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kmsan \
|
||||
-fsanitize=kernel-memory
|
||||
.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 160000
|
||||
MSAN_CFLAGS+= -fno-sanitize-memory-param-retval
|
||||
.endif
|
||||
SAN_CFLAGS+= ${MSAN_CFLAGS}
|
||||
.endif # !empty(KMSAN_ENABLED)
|
||||
|
||||
#
|
||||
# Kernel Undefined Behavior SANitizer support
|
||||
#
|
||||
.if !empty(KUBSAN_ENABLED)
|
||||
SAN_CFLAGS+= -fsanitize=undefined
|
||||
.endif
|
||||
|
||||
#
|
||||
# Generic Kernel Coverage support
|
||||
#
|
||||
.if !empty(COVERAGE_ENABLED)
|
||||
.if ${COMPILER_TYPE} == "clang" || \
|
||||
(${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100)
|
||||
SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp
|
||||
.else
|
||||
SAN_CFLAGS+= -fsanitize-coverage=trace-pc
|
||||
.endif
|
||||
.endif # !empty(COVERAGE_ENABLED)
|
||||
|
||||
# Add the sanitizer C flags
|
||||
CFLAGS+= ${SAN_CFLAGS}
|
||||
|
||||
#
|
||||
# Initialize stack variables on function entry
|
||||
#
|
||||
|
||||
@ -37,10 +37,6 @@ MKMODULESENV+= WITH_CTF="${WITH_CTF}"
|
||||
MKMODULESENV+= KCSAN_ENABLED="yes"
|
||||
.endif
|
||||
|
||||
.if defined(SAN_CFLAGS)
|
||||
MKMODULESENV+= SAN_CFLAGS="${SAN_CFLAGS}"
|
||||
.endif
|
||||
|
||||
.if defined(GCOV_CFLAGS)
|
||||
MKMODULESENV+= GCOV_CFLAGS="${GCOV_CFLAGS}"
|
||||
.endif
|
||||
|
||||
@ -93,73 +93,9 @@ ASM_CFLAGS= -x assembler-with-cpp -DLOCORE ${CFLAGS} ${ASM_CFLAGS.${.IMPSRC:T}}
|
||||
COMPAT_FREEBSD32_ENABLED!= grep COMPAT_FREEBSD32 opt_global.h || true ; echo
|
||||
|
||||
KASAN_ENABLED!= grep KASAN opt_global.h || true ; echo
|
||||
.if !empty(KASAN_ENABLED)
|
||||
SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kasan \
|
||||
-fsanitize=kernel-address
|
||||
.if ${COMPILER_TYPE} == "clang"
|
||||
SAN_CFLAGS+= -mllvm -asan-stack=true \
|
||||
-mllvm -asan-instrument-dynamic-allocas=true \
|
||||
-mllvm -asan-globals=true \
|
||||
-mllvm -asan-use-after-scope=true \
|
||||
-mllvm -asan-instrumentation-with-call-threshold=0 \
|
||||
-mllvm -asan-instrument-byval=false
|
||||
.endif
|
||||
|
||||
.if ${MACHINE_CPUARCH} == "aarch64"
|
||||
# KASAN/ARM64 TODO: -asan-mapping-offset is calculated from:
|
||||
# (VM_KERNEL_MIN_ADDRESS >> KASAN_SHADOW_SCALE_SHIFT) + $offset = KASAN_MIN_ADDRESS
|
||||
#
|
||||
# This is different than amd64, where we have a different
|
||||
# KASAN_MIN_ADDRESS, and this offset value should eventually be
|
||||
# upstreamed similar to: https://reviews.llvm.org/D98285
|
||||
#
|
||||
.if ${COMPILER_TYPE} == "clang"
|
||||
SAN_CFLAGS+= -mllvm -asan-mapping-offset=0xdfff208000000000
|
||||
.else
|
||||
SAN_CFLAGS+= -fasan-shadow-offset=0xdfff208000000000
|
||||
.endif
|
||||
.elif ${MACHINE_CPUARCH} == "amd64" && \
|
||||
${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 180000
|
||||
# Work around https://github.com/llvm/llvm-project/issues/87923, which leads to
|
||||
# an assertion failure compiling dtrace.c with asan enabled.
|
||||
SAN_CFLAGS+= -mllvm -asan-use-stack-safety=0
|
||||
.endif
|
||||
.endif
|
||||
|
||||
KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo
|
||||
.if !empty(KCSAN_ENABLED)
|
||||
SAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kcsan \
|
||||
-fsanitize=thread
|
||||
.endif
|
||||
|
||||
KMSAN_ENABLED!= grep KMSAN opt_global.h || true ; echo
|
||||
.if !empty(KMSAN_ENABLED)
|
||||
# Disable -fno-sanitize-memory-param-retval until interceptors have been
|
||||
# updated to work properly with it.
|
||||
MSAN_CFLAGS+= -DSAN_NEEDS_INTERCEPTORS -DSAN_INTERCEPTOR_PREFIX=kmsan \
|
||||
-fsanitize=kernel-memory
|
||||
.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 160000
|
||||
MSAN_CFLAGS+= -fno-sanitize-memory-param-retval
|
||||
.endif
|
||||
SAN_CFLAGS+= ${MSAN_CFLAGS}
|
||||
.endif
|
||||
|
||||
KUBSAN_ENABLED!= grep KUBSAN opt_global.h || true ; echo
|
||||
.if !empty(KUBSAN_ENABLED)
|
||||
SAN_CFLAGS+= -fsanitize=undefined
|
||||
.endif
|
||||
|
||||
COVERAGE_ENABLED!= grep COVERAGE opt_global.h || true ; echo
|
||||
.if !empty(COVERAGE_ENABLED)
|
||||
.if ${COMPILER_TYPE} == "clang" || \
|
||||
(${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100)
|
||||
SAN_CFLAGS+= -fsanitize-coverage=trace-pc,trace-cmp
|
||||
.else
|
||||
SAN_CFLAGS+= -fsanitize-coverage=trace-pc
|
||||
.endif
|
||||
.endif
|
||||
|
||||
CFLAGS+= ${SAN_CFLAGS}
|
||||
|
||||
GCOV_ENABLED!= grep GCOV opt_global.h || true ; echo
|
||||
.if !empty(GCOV_ENABLED)
|
||||
|
||||
@ -406,8 +406,10 @@ ${_src}:
|
||||
.endfor
|
||||
.endif
|
||||
|
||||
# Add the sanitizer C flags
|
||||
CFLAGS+= ${SAN_CFLAGS}
|
||||
KASAN_ENABLED= ${KERN_OPTS:MKASAN}
|
||||
KCSAN_ENABLED= ${KERN_OPTS:MKCSAN}
|
||||
KMSAN_ENABLED= ${KERN_OPTS:MKMSAN}
|
||||
KUBSAN_ENABLED= ${KERN_OPTS:MKUBSAN}
|
||||
|
||||
# Add the gcov flags
|
||||
CFLAGS+= ${GCOV_CFLAGS}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user