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Re: [Xen-devel] unlock_cpu_hotplug() Kernel Bug

To: Joshua West <jwest@xxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "keir.frasier@xxxxxxxxxxxxx" <keir.frasier@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] unlock_cpu_hotplug() Kernel Bug
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Mon, 31 Aug 2009 09:30:34 +0100
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Yes, thanks.


On 31/08/2009 05:16, "Joshua West" <jwest@xxxxxxxxxxxx> wrote:

> Keir,
> I take it linux-2.6.18-xen.hg changeset 931 was applied to fix this
> bug?  I'll test it out this week.
> On 08/28/2009 05:01 PM, Joshua West wrote:
>> Hey all,
>> I've just encountered the following on a rather busy virtual machine:
>> BUG: warning at
>> /usr/src/redhat/BUILD/xen-3.4.1/linux-2.6.18/kernel/cpu.c:53/unlock_cpu_hotpl
>> ug()
>> Call Trace:
>>   [<ffffffff80247679>] unlock_cpu_hotplug+0x3c/0x6d
>>   [<ffffffff802260aa>] sched_getaffinity+0x7e/0x95
>>   [<ffffffff802260e7>] sys_sched_getaffinity+0x26/0x55
>>   [<ffffffff80209302>] tracesys+0xab/0xb5
>> This is on a Dell PowerEdge 1950 w/ Xen 3.4.1, Kernel
>> (changeset 928 from linux-2.6.18-xen.hg), x86_64 Hypervisor and x86_64 dom0.
>> Perhaps the patch outlined in http://lkml.org/lkml/2007/2/16/4 should be
>> applied to the linux-2.6.18-xen.hg tree?
>> Thanks.

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