Re: [PATCH -next 1/2] mm: disable KCSAN for kmemleak

[Catalin Marinas]

On Tue, Mar 03, 2020 at 02:28:35PM -0500, Qian Cai wrote:
> Kmemleak could scan task stacks while plain writes happens to those
> stack variables which could results in data races. For example, in
> sys_rt_sigaction and do_sigaction(), it could have plain writes in
> a 32-byte size. Since the kmemleak does not care about the actual values
> of a non-pointer and all do_sigaction() call sites only copy to stack
> variables, just disable KCSAN for kmemleak to avoid annotating anything
> outside Kmemleak just because Kmemleak scans everything.
> 
> Suggested-by: Marco Elver <elver@xxxxxxxxxx>
> Signed-off-by: Qian Cai <cai@xxxxxx>

Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>