linux-kernel - Re: [PATCH] x86: check for valid irq_cfg pointer in smp_irq_move_cleanup

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Message-ID: <alpine.LFD.2.02.1205212304580.3231@ionos>
Date:	Mon, 21 May 2012 23:07:04 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Dimitri Sivanich <sivanich@....com>
cc:	Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	x86@...nel.org, Suresh Siddha <suresh.b.siddha@...el.com>,
	Yinghai Lu <yinghai@...nel.org>,
	Naga Chumbalkar <nagananda.chumbalkar@...com>,
	Jacob Pan <jacob.jun.pan@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: check for valid irq_cfg pointer in
 smp_irq_move_cleanup_interrupt

On Mon, 21 May 2012, Dimitri Sivanich wrote:

> The smp_irq_move_cleanup_interrupt routine should be checking for a valid
> irq_cfg pointer prior to accessing it.  It also seems that this should be
> done after taking the desc lock.

It seems that you either missed or failed to explain why it should be
done _after_ taking the lock.

Changelogs matter, really.
 
Thanks,

	tglx
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