RE: [PATCH] cpu-topology: Fix the potential data corruption

[Zengtao (B)]

> -----Original Message-----
> From: Sudeep Holla [mailto:sudeep.holla@xxxxxxx]
> Sent: Friday, February 28, 2020 6:41 PM
> To: Zengtao (B)
> Cc: Linuxarm; Greg Kroah-Hartman; Rafael J. Wysocki;
> linux-kernel@xxxxxxxxxxxxxxx; Sudeep Holla
> Subject: Re: [PATCH] cpu-topology: Fix the potential data corruption
> 
> On Fri, Feb 28, 2020 at 04:35:45PM +0800, Zeng Tao wrote:
> > Currently there are only 10 bytes to store the cpu-topology info.
> > That is:
> > snprintf(buffer, 10, "cluster%d",i);
> > snprintf(buffer, 10, "thread%d",i);
> > snprintf(buffer, 10, "core%d",i);
> >
> > In the boundary test, if the cluster number exceeds 100, there will be a
> 
> I don't understand you mention of 100 in particular above. I can see
> issue
> if there are cluster with more than 2-digit id. Though highly unlikely for
> now, but I don't have objection to the patch.
>

The same meaning, more than 2-digit id equals to more than 100, right?
Here 100 is for from tester/user perspective.
And we found this issue when test with QEMU. 

> --
> Regards,
> Sudeep