Re: [PATCH v3 27/46] kmsan: instrumentation.h: add instrumentation_begin_with_regs()

[Thomas Gleixner]

On Tue, Apr 26 2022 at 18:42, Alexander Potapenko wrote:
> +void kmsan_instrumentation_begin(struct pt_regs *regs)
> +{
> +	struct kmsan_context_state *state = &kmsan_get_context()->cstate;
> +
> +	if (state)
> +		__memset(state, 0, sizeof(struct kmsan_context_state));

  sizeof(*state) please

> +	if (!kmsan_enabled || !regs)
> +		return;

Why has state to be cleared when kmsan is not enabled and how do you end up
with regs == NULL here?

Thanks,

        tglx