Re: [PATCH 2/8] objtool, kcsan: Add __tsan_read_write to uaccess whitelist

[Peter Zijlstra]

On Tue, Jul 21, 2020 at 12:30:10PM +0200, Marco Elver wrote:
> Adds the new __tsan_read_write compound instrumentation to objtool's
> uaccess whitelist.
> 
> Signed-off-by: Marco Elver <elver@xxxxxxxxxx>

Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>

> ---
>  tools/objtool/check.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/tools/objtool/check.c b/tools/objtool/check.c
> index 63d8b630c67a..38d82e705c93 100644
> --- a/tools/objtool/check.c
> +++ b/tools/objtool/check.c
> @@ -528,6 +528,11 @@ static const char *uaccess_safe_builtin[] = {
>  	"__tsan_write4",
>  	"__tsan_write8",
>  	"__tsan_write16",
> +	"__tsan_read_write1",
> +	"__tsan_read_write2",
> +	"__tsan_read_write4",
> +	"__tsan_read_write8",
> +	"__tsan_read_write16",
>  	"__tsan_atomic8_load",
>  	"__tsan_atomic16_load",
>  	"__tsan_atomic32_load",
> -- 
> 2.28.0.rc0.105.gf9edc3c819-goog
>