linux-kernel - Re: modify_irte NULL pointer

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Message-ID: <alpine.DEB.2.11.1605241543260.3639@nanos>
Date:	Tue, 24 May 2016 15:44:21 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Wanpeng Li <kernellwp@...il.com>
cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: modify_irte NULL pointer

On Sun, 22 May 2016, Wanpeng Li wrote:
> [   39.977778] BUG: unable to handle kernel NULL pointer dereference
> at           (null)
> [   39.988494] IP: [<ffffffff81560598>] modify_irte+0x58/0x140
> [   39.996939] PGD cede3067 PUD 2d790067 PMD 0
> [   40.004087] Oops: 0000 [#1] SMP
>  
> This can be reproduced by adding noapic boot parameter.

Hmm. We should not have MSIs and such if apic is disabled. I'll have a
look.

Thanks,

	tglx