Re: [PATCH v4 01/10] kcsan: Add Kernel Concurrency Sanitizer infrastructure

[Qian Cai]

On Thu, 2019-11-14 at 19:02 +0100, 'Marco Elver' via kasan-dev wrote:

> +menuconfig KCSAN
> +	bool "KCSAN: watchpoint-based dynamic data race detector"
> +	depends on HAVE_ARCH_KCSAN && !KASAN && STACKTRACE

"!KASAN" makes me sorrow. What's problem of those two?

> +	default n
> +	help
> +	  Kernel Concurrency Sanitizer is a dynamic data race detector, which
> +	  uses a watchpoint-based sampling approach to detect races. See
> +	  <file:Documentation/dev-tools/kcsan.rst> for more details.
> +