linux-kernel - Re: [PATCH] sched/fair: Fix overflow in vruntime

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Message-ID: <20250709115317.GK1613200@noisy.programming.kicks-ass.net>
Date: Wed, 9 Jul 2025 13:53:17 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Zicheng Qu <quzicheng@...wei.com>
Cc: mingo@...hat.com, juri.lelli@...hat.com, vincent.guittot@...aro.org,
	dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
	mgorman@...e.de, vschneid@...hat.com, linux-kernel@...r.kernel.org,
	tanghui20@...wei.com, zhangqiao22@...wei.com,
	judy.chenhui@...wei.com
Subject: Re: [PATCH] sched/fair: Fix overflow in vruntime_eligible() causing
 NULL return

On Wed, Jul 09, 2025 at 09:38:29AM +0000, Zicheng Qu wrote:

> The best approach should be to dig deep into why overflow occurs, which
> attributes lead to the overflow, whether it is normal, and how to avoid
> it.

What kernel version are you seeing this on?