linux-kernel - Re: [PATCH] sched:add panic to remind that wake_q_node should be WAKE_Q

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Message-ID:
 <SEZPR01MB5894794E69717A19DAA68BAEDDB62@SEZPR01MB5894.apcprd01.prod.exchangelabs.com>
Date: Sun, 28 Jul 2024 23:08:38 +0530
From: Mukesh Kumar Chaurasiya <mchauras@...mail.com>
To: buckzhang1212@...h.net
Cc: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, 
	Juri Lelli <juri.lelli@...hat.com>, Vincent Guittot <vincent.guittot@...aro.org>, 
	Dietmar Eggemann <dietmar.eggemann@....com>, Steven Rostedt <rostedt@...dmis.org>, 
	Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, 
	Daniel Bristot de Oliveira <bristot@...hat.com>, Valentin Schneider <vschneid@...hat.com>, 
	Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, 
	Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, llvm@...ts.linux.dev, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sched:add panic to remind that wake_q_node should be
 WAKE_Q_TAIL when emtpy

On Wed, Jul 17, 2024 at 09:19:01AM -0700, buckzhang1212@...h.net wrote:
> From: "weihui.zhang" <buckzhang1212@...h.net>
> 
> Here is a kernel exception ,wake_q_node is NULL.
> when wake_q_node empty ,it must be WAKE_Q_TAIL instead of NULL Logically.
> Maybe a hardware bitflip corrupted the node ,add panic to call attention.

Hey,

is there a way to recreate this crash?

Regards,
Mukesh