Re: [PATCH] tools/power/x86/intel-speed-select: Fix off by one check

[srinivas pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>]

On Mon, 2022-07-18 at 16:17 +0300, Dan Carpenter wrote:
> Change > MAX_DIE_PER_PACKAGE to >= MAX_DIE_PER_PACKAGE to prevent
> accessing one element beyond the end of the array.
> 
> Fixes: 7fd786dfbd2c ("tools/power/x86/intel-speed-select: OOB daemon
> mode")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Thanks. I will add to PULL request.


> ---
>  tools/power/x86/intel-speed-select/isst-daemon.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/power/x86/intel-speed-select/isst-daemon.c
> b/tools/power/x86/intel-speed-select/isst-daemon.c
> index dd372924bc82..d0400c6684ba 100644
> --- a/tools/power/x86/intel-speed-select/isst-daemon.c
> +++ b/tools/power/x86/intel-speed-select/isst-daemon.c
> @@ -41,7 +41,7 @@ void process_level_change(int cpu)
>         time_t tm;
>         int ret;
>  
> -       if (pkg_id >= MAX_PACKAGE_COUNT || die_id >
> MAX_DIE_PER_PACKAGE) {
> +       if (pkg_id >= MAX_PACKAGE_COUNT || die_id >=
> MAX_DIE_PER_PACKAGE) {
>                 debug_printf("Invalid package/die info for cpu:%d\n",
> cpu);
>                 return;
>         }