Vladimir Ivashchenko wrote:

Any stability assurances or workarounds are highly appreciated. :)

Jan 28 21:31:32 SunSTG kernel: BUG: soft lockup - CPU#0 stuck for 10s!

[...]

Jan 28 21:31:32 SunSTG kernel:  [<f8d63562>] compute_parity6+0x21c/0x28a
[raid456]
Jan 28 21:31:32 SunSTG kernel:  [<f8d6452e>] handle_stripe+0xc8b/0x215e
[raid456]
Jan 28 21:31:32 SunSTG kernel:  [<c041fdb3>] enqueue_task+0x29/0x39
Jan 28 21:31:32 SunSTG kernel:  [<c0420629>] try_to_wake_up+0x371/0x37b
Jan 28 21:31:32 SunSTG kernel:  [<c041edec>] __wake_up_common+0x2f/0x53
Jan 28 21:31:32 SunSTG kernel:  [<c041fbe6>] __wake_up+0x2a/0x3d
Jan 28 21:31:32 SunSTG kernel:  [<f8d61744>] release_stripe+0x21/0x2e
[raid456]
Jan 28 21:31:33 SunSTG kernel:  [<f8d65b0c>] raid5d+0x10b/0x130
[raid456]
Jan 28 21:31:33 SunSTG kernel:  [<c059aca8>] md_thread+0xdf/0xf5
Jan 28 21:31:33 SunSTG kernel:  [<c0436347>] autoremove_wake_function
+0x0/0x2d
Jan 28 21:31:33 SunSTG kernel:  [<c059abc9>] md_thread+0x0/0xf5
Jan 28 21:31:33 SunSTG kernel:  [<c0436285>] kthread+0xc0/0xeb
Jan 28 21:31:33 SunSTG kernel:  [<c04361c5>] kthread+0x0/0xeb
Jan 28 21:31:33 SunSTG kernel:  [<c0405c3b>] kernel_thread_helper
+0x7/0x10

Are you able to update the kernel to something more modern, or are you 
required to keep the kernel at the 2.6.18 level?  Out of curiousity, 
could you post the output of

	cat /proc/interrupts


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