Messages in this thread | | | Subject | RE: Warning in during hotplug on 2.6.27-rc2-git5 | Date | Thu, 14 Aug 2008 13:35:49 -0500 | From | "Langsdorf, Mark" <> |
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> On Thu, Aug 14, 2008 at 05:53:57PM +0200, Rafael J. Wysocki wrote: > > On Wednesday, 13 of August 2008, Mark Langsdorf wrote: > > > I'm seeing the following error message when I hotunplug and replug > > > a cpu in 2.6.27-rc2-git5. The system becomes unstable almost > > > immediately afterwards. > > > > Hm, it seems that MCE is involved somehow. Andi, can you > have a look at this, > > please? > > FWIW the mce code here actually hasn't changed for a long time. > > > > > ------------[ cut here ]------------ > > > WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x33/0x39() > > > sysfs: duplicate filename 'machinecheck4' can not be created > > The only way I could see that happening if CPU_DEAD/CPU_ONLINE > is not properly balanced.
I'm still seeing it on 2.6.27-rc2, even with the patch here http://lkml.org/lkml/2008/7/30/171 and the wbinvd_halt code patch applied. Maybe something else broke in some of the recent hotplug changes?
-Mark Langsdorf Operating System Research Center AMD
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