Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1753018AbbGBHCc (ORCPT <rfc822;w@1wt.eu>);
	Thu, 2 Jul 2015 03:02:32 -0400
Received: from mga01.intel.com ([192.55.52.88]:43106 "EHLO mga01.intel.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1750854AbbGBHCb (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Thu, 2 Jul 2015 03:02:31 -0400
X-ExtLoop1: 1
X-IronPort-AV: E=Sophos;i="5.15,390,1432623600"; 
   d="scan'208";a="721537317"
Subject: Re: [PATCH] smpboot.c: move setup_vector_irq after set_cpu_online
To: Joerg Roedel <jroedel@suse.de>
References: <1435811074-30062-1-git-send-email-jin.xiao@intel.com>
 <20150702065215.GD16233@suse.de>
Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org,
        bp@suse.de, boris.ostrovsky@oracle.com, dave.hansen@linux.intel.com,
        rientjes@google.com, imammedo@redhat.com, paulmck@linux.vnet.ibm.com,
        linux-kernel@vger.kernel.org, peterz@infradead.org, mingo@kernel.org,
        yanmin_zhang@linux.intel.com, xinhuix.pan@intel.com
From: "Xiao, Jin" <jin.xiao@intel.com>
Message-ID: <5594E1F2.5060602@intel.com>
Date: Thu, 2 Jul 2015 15:02:10 +0800
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101
 Thunderbird/38.0.1
MIME-Version: 1.0
In-Reply-To: <20150702065215.GD16233@suse.de>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1020
Lines: 32

Hi Joerg,

On 7/2/2015 2:52 PM, Joerg Roedel wrote:
> Hi Jin,
>
> On Thu, Jul 02, 2015 at 12:24:34PM +0800, xiao jin wrote:
>> [  106.107851] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
>> [  106.116702] IP:
>> [  106.118490]  [<ffffffff810044f6>] check_irq_vectors_for_cpu_disable+0x76/0x180
> This might be the same issue I fixed with:
>
> 	d97eb8966c91 x86/irq: Check for valid irq descriptor in check_irq_vectors_for_cpu_disable()
>
> Can you try whether applying this patch on your kernel fixes your
> issue?
>
Yes, I agree d97eb8966c91 fix the IPANIC. I just notice a description 
from http://lkml.kernel.org/r/20150204132754.GA10078@suse.de.

I wish to share the debug result and root cause from my side.

> Thanks,
>
> 	Joerg
>

Thanks.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/