Re: [PATCH] BUG-REPORT: cpuidle: teo: intervals[] array index out
From: Rafael J. Wysocki
Date: Fri Jan 10 2020 - 06:13:33 EST
On Friday, January 10, 2020 2:59:17 AM CET Ikjoon Jang wrote:
> This seems to be a simple bug in rotating array index.
That's correct.
Please repost the patch with a Signed-off-by tag, so I can apply it.
> ---
> drivers/cpuidle/governors/teo.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/cpuidle/governors/teo.c b/drivers/cpuidle/governors/teo.c
> index de7e706efd46..6deaaf5f05b5 100644
> --- a/drivers/cpuidle/governors/teo.c
> +++ b/drivers/cpuidle/governors/teo.c
> @@ -198,7 +198,7 @@ static void teo_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
> * pattern detection.
> */
> cpu_data->intervals[cpu_data->interval_idx++] = measured_ns;
> - if (cpu_data->interval_idx > INTERVALS)
> + if (cpu_data->interval_idx >= INTERVALS)
> cpu_data->interval_idx = 0;
> }
>
>