On Fri, Nov 07, 2008 at 08:37:50PM +1100, Stephen Rothwell wrote:
>
> > =======================================================
> > [ INFO: possible circular locking dependency detected ]
> > 2.6.28-rc3-next-20081106-mad-1 #2
> > -------------------------------------------------------
> > cryptsetup/2554 is trying to acquire lock:
> > (&cpu_hotplug.lock){--..}, at: [<c012cd32>] get_online_cpus+0x22/0x40
> >
> > but task is already holding lock:
> > (&mm->mmap_sem){----}, at: [<c018b98e>] sys_mlockall+0x5e/0xd0
I don't see anything in the back-trace that's crypto related
or even dm related. Therefore I suspect the problem is in core
sysfs, mm or CPU hot plugging.
Cheers,
--
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