[Xen-devel] unlock_cpu_hotplug() Kernel Bug

[Joshua West <jwest@xxxxxxxxxxxx>]

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_hotplug()

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 2.6.18.8
(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.

-- 
Joshua West
Senior Systems Engineer
Brandeis University
http://www.brandeis.edu


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