linux-kernel - Re: oops in ioapic_write

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Message-ID: <20100804073324.GC28183@elte.hu>
Date:	Wed, 4 Aug 2010 09:33:24 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Yinghai Lu <yinghai@...nel.org>, Dave Airlie <airlied@...il.com>,
	Iranna D Ankad <iranna.ankad@...ibm.com>,
	Gary Hade <garyhade@...ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Renninger <trenn@...e.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: oops in ioapic_write_entry


* Eric W. Biederman <ebiederm@...ssion.com> wrote:

> This patch definitely does not solve Dave Airlie's problem.  That was 
> clearly caused by a (ACPI being disabled compared to the test case) and a 
> bad BIOS provided MP table with an invalid apic_id, and our attempt to 
> lookup the ioapic and failed.

The kernel should not crash obviously, so that's a bug that has to be 
addressed - or failing any timely resolution the original patch which 
introduced the regression [if it's a regression] needs to be reverted.

Thanks,

	Ingo
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