7707535ab9
When enabling UBSAN_SANITIZE_ALL, the kernel image size gets increased significantly (~3x). So, it sounds better to have some note in Kconfig. And, fixed a typo. Signed-off-by: Yang Shi <yang.shi@linaro.org> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
31 lines
1.1 KiB
Text
31 lines
1.1 KiB
Text
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/ubsan.txt).
|
|
|
|
config UBSAN_SANITIZE_ALL
|
|
bool "Enable instrumentation for the entire kernel"
|
|
depends on UBSAN
|
|
depends on ARCH_HAS_UBSAN_SANITIZE_ALL
|
|
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.
|