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From: "Xiao, Jin" <jin.xiao@intel.com>
To: Joerg Roedel <jroedel@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
Subject: Re: [PATCH] smpboot.c: move setup_vector_irq after set_cpu_online
Date: Thu, 2 Jul 2015 15:02:10 +0800	[thread overview]
Message-ID: <5594E1F2.5060602@intel.com> (raw)
In-Reply-To: <20150702065215.GD16233@suse.de>

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.

  reply	other threads:[~2015-07-02  7:02 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-02  4:24 [PATCH] smpboot.c: move setup_vector_irq after set_cpu_online xiao jin
2015-07-02  6:52 ` Joerg Roedel
2015-07-02  7:02   ` Xiao, Jin [this message]
2015-07-02  9:20     ` Zhang, Yanmin
2015-07-02 12:50       ` Thomas Gleixner
2015-07-03  2:02         ` Xiao, Jin

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