config ARCH_HAS_UBSAN_SANITIZE_ALL
|
bool
|
|
config UBSAN
|
bool "Undefined behaviour sanity checker"
|
help
|
This option enables undefined behaviour sanity checker
|
Compile-time instrumentation is used to detect various undefined
|
behaviours in runtime. Various types of checks may be enabled
|
via boot parameter ubsan_handle
|
(see: Documentation/dev-tools/ubsan.rst).
|
|
config UBSAN_SANITIZE_ALL
|
bool "Enable instrumentation for the entire kernel"
|
depends on UBSAN
|
depends on ARCH_HAS_UBSAN_SANITIZE_ALL
|
|
# We build with -Wno-maybe-uninitilzed, but we still want to
|
# use -Wmaybe-uninitilized in allmodconfig builds.
|
# So dependsy bellow used to disable this option in allmodconfig
|
depends on !COMPILE_TEST
|
default y
|
help
|
This option activates instrumentation for the entire kernel.
|
If you don't enable this option, you have to explicitly specify
|
UBSAN_SANITIZE := y for the files/directories you want to check for UB.
|
Enabling this option will get kernel image size increased
|
significantly.
|
|
config UBSAN_ALIGNMENT
|
bool "Enable checking of pointers alignment"
|
depends on UBSAN
|
default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS
|
help
|
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 TEST_UBSAN
|
tristate "Module for testing for undefined behavior detection"
|
depends on m && UBSAN
|
help
|
This is a test module for UBSAN.
|
It triggers various undefined behavior, and detect it.
|
