Re: [PATCH v3 2/2] x86: Fix /proc/cpuinfo cpumask warning

Borislav Petkov
2022-10-31T08:59:13Z

On Mon, Oct 31, 2022 at 09:06:04AM +0100, Andrew Jones wrote:
> The valid cpumask range is [0, nr_cpu_ids) and cpumask_next() always
> returns a CPU ID greater than its input, which results in its input
> range being [-1, nr_cpu_ids - 1). Ensure showing CPU info avoids
> triggering error conditions in cpumask_next() by stopping its loop

What error conditions?

What would happen if @n is outside of the valid range?

--
Regards/Gruss,
Boris.