linux-kernel - Re: [PATCH] platform/x86: intel: punit

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Message-ID: <aSCmsyhV-aPu1WVW@stanley.mountain>
Date: Fri, 21 Nov 2025 20:51:47 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: Qipeng Zha <qipeng.zha@...el.com>, Hans de Goede <hansg@...nel.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Darren Hart <dvhart@...ux.intel.com>,
	platform-driver-x86@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] platform/x86: intel: punit_ipc: fix memory corruption

On Fri, Nov 21, 2025 at 07:27:54PM +0200, Ilpo Järvinen wrote:
> On Fri, 21 Nov 2025, Dan Carpenter wrote:
> 
> > This passes a stack address to the IRQ handler, "&punit_ipcdev" vs
> 
> This first part I don't get, why you think &punit_ipcdev is a stack 
> address? The punit_ipcdev variable is defined in the global scope:
> 
> static IPC_DEV *punit_ipcdev;

Ah, right.  Sorry.  I thought it was a local variable.

Yeah.  Let me resend this.

regards,
dan carpenter