CPU kernel errors with RC10

I have upgraded one of my HP N36L Microservers to RC10.  It was running beta12 prior to this.  This is a spare machine really I am not using properly yet, I still have another running beta12.

I ran a parity check prior to and after upgrading.  Both ran clear in terms of parity errors but after upgrading my syslog contains a large number of errors, below is an excerpt.  The parity check takes around 6 hours and these errors only occur for roughly the first half.

The only addon I usually use is unmenu and the results are the same when I disable this and run as stock.  The full syslog is also attached.

Anyone have any ideas or suggestions?  There are a few other threads but no of these are on RC10.

Jan 18 10:18:31 hp2 kernel: INFO: rcu_sched self-detected stall on CPU { 1}  (t=6000 jiffies)
Jan 18 10:18:31 hp2 kernel: Pid: 1210, comm: unraidd Not tainted 3.4.24-unRAID #1 (Errors)
Jan 18 10:18:31 hp2 kernel: Call Trace: (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c1057ba2>] print_cpu_stall+0x6d/0xe5 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c1057c55>] __rcu_pending+0x3b/0x138 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c1057dc8>] rcu_check_callbacks+0x76/0xa1 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c102c96e>] update_process_times+0x2d/0x58 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c104b0fb>] tick_periodic+0x63/0x65 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c104b116>] tick_handle_periodic+0x19/0x6f (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c121d968>] ? add_interrupt_randomness+0x125/0x12d (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c104b467>] tick_do_periodic_broadcast+0x4f/0x88 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c104b4b0>] tick_handle_periodic_broadcast+0x10/0x4b (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c1004265>] timer_interrupt+0xd/0x14 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c10534a1>] handle_irq_event_percpu+0x2a/0x11a (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c1055866>] ? irq_set_chip_and_handler_name+0x27/0x27 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c10535b6>] handle_irq_event+0x25/0x3c (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c1055866>] ? irq_set_chip_and_handler_name+0x27/0x27 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c1055914>] handle_edge_irq+0xae/0xce (Errors)
Jan 18 10:18:31 hp2 kernel:  <IRQ>  [<c10036c3>] ? do_IRQ+0x37/0x9b
Jan 18 10:18:31 hp2 kernel:  [<c1240a62>] ? scsi_finish_command+0x9d/0xa3 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c10285ae>] ? irq_enter+0x41/0x41 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c133dfa9>] ? common_interrupt+0x29/0x30 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c10285ae>] ? irq_enter+0x41/0x41 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c10285ea>] ? __do_softirq+0x3c/0xfa (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c10285ae>] ? irq_enter+0x41/0x41 (Errors)
Jan 18 10:18:31 hp2 kernel:  <IRQ>  [<c1028462>] ? irq_exit+0x32/0x58
Jan 18 10:18:31 hp2 kernel:  [<c1003713>] ? do_IRQ+0x87/0x9b (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c10401f2>] ? default_wake_function+0xb/0xd (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c133dfa9>] ? common_interrupt+0x29/0x30 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c11b6521>] ? memcmp+0x1a/0x25 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<f851c902>] ? handle_stripe+0xb54/0xdc1 [md_mod] (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c1028486>] ? irq_exit+0x56/0x58 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c103d03d>] ? __wake_up+0x3b/0x42 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<f851cbe7>] ? unraidd+0x78/0xbc [md_mod] (Errors)
Jan 18 10:18:31 hp2 kernel:  [<f8519b31>] ? md_thread+0xcc/0xe3 [md_mod] (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c10379a1>] ? wake_up_bit+0x5b/0x5b (Errors)
Jan 18 10:18:31 hp2 kernel:  [<f8519a65>] ? import_device+0x166/0x166 [md_mod] (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c10376a8>] ? kthread+0x67/0x6c (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c1037641>] ? kthread_freezable_should_stop+0x49/0x49 (Errors)
Jan 18 10:18:31 hp2 kernel:  [<c133dfb6>] ? kernel_thread_helper+0x6/0xd (Errors)

syslog-2013-01-19.zip

That's a "harmless" warning message.  I need to do some work in the unraid driver to get rid of it, which I'll do when I'm integrating with the 64-bit kernel.

Ok, many thanks for the reply Tom.

Glad I found this thread, was having an issue this morning and saw the same errors and panicked a little >.<

What's the cause of this, anyways?