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From: Ingo Molnar <mingo@elte.hu>
To: Ben Hutchings <bhutchings@solarflare.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Cyrill Gorcunov <gorcunov@gmail.com>,
	Yinghai Lu <yhlu.kernel@gmail.com>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] x86: Don't allow nr_irqs > NR_IRQS
Date: Thu, 6 Nov 2008 07:24:23 +0100	[thread overview]
Message-ID: <20081106062423.GB6384@elte.hu> (raw)
In-Reply-To: <1225886687.3074.59.camel@achroite>


* Ben Hutchings <bhutchings@solarflare.com> wrote:

> On some systems probe_nr_irqs() can return a value larger than 
> NR_IRQS.  This will lead to probe_irq_on() overrunning the irq_desc 
> array.
> 
> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

>  I hit this when running net-next-2.6 (close to 
> 2.6.28-rc3) on a Supermicro dual Xeon system.  NR_IRQS is 224 but 
> probe_nr_irqs() detects 5 IOAPICs and returns 240.  Here are the log 
> messages:

applied to tip/x86/urgent, thanks Ben!

	Ingo

      parent reply	other threads:[~2008-11-06  6:24 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-04 17:18 [PATCH] " Ben Hutchings
2008-11-04 18:00 ` Cyrill Gorcunov
2008-11-04 18:36   ` Ben Hutchings
2008-11-04 18:56     ` Yinghai Lu
2008-11-04 19:01     ` Cyrill Gorcunov
     [not found]       ` <1225825559.3074.26.camel@achroite>
     [not found]         ` <20081104194606.GJ21470@localhost>
2008-11-04 21:31           ` Ben Hutchings
2008-11-05 12:04 ` [PATCH v2] " Ben Hutchings
2008-11-05 19:11   ` Cyrill Gorcunov
2008-11-05 19:15     ` Ben Hutchings
2008-11-05 19:26       ` Cyrill Gorcunov
2008-11-06  9:03       ` Ingo Molnar
2008-11-06  6:24   ` Ingo Molnar [this message]

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