@ -85,6 +85,41 @@ config KERNEL_PROFILING
Enable the extended profiling support mechanisms used by profilers such
as OProfile.
config KERNEL_UBSAN
bool "Compile the kernel with 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 KERNEL_UBSAN_SANITIZE_ALL
bool "Enable instrumentation for the entire kernel"
depends on KERNEL_UBSAN
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 KERNEL_UBSAN_ALIGNMENT
bool "Enable checking of pointers alignment"
depends on KERNEL_UBSAN
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 KERNEL_UBSAN_NULL
bool "Enable checking of null pointers"
depends on KERNEL_UBSAN
help
This option enables detection of memory accesses via a
null pointer.
config KERNEL_TASKSTATS
bool "Compile the kernel with task resource/io statistics and accounting"
default n