This is ipp025.unknown_domain (Linux x86_64 2.6.27-rc8-00016-gd3a47e8) 16:17:45

ipp025 login: [325022.142086] BUG: spinlock lockup on CPU#3, rpciod/3/1173, ffff88013624a100
[325022.142086] BUG: spinlock lockup on CPU#3, rpciod/3/1173, ffff88013624a100
[325022.142086] BUG: spinlock recursion on CPU#3, rpciod/3/1173
[325022.142086]  lock: ffffffff80799b40, .magic: dead4ead, .owner: rpciod/3/1173, .owner_cpu: 3
[325022.142086] Pid: 1173, comm: rpciod/3 Not tainted 2.6.27-rc8-00016-gd3a47e8 #1
[325022.142086] 
                 [325022.142086] Call Trace:
[325022.142086]  [] _raw_spin_lock+0x40/0x120
[325022.142086]  [] _spin_lock_irqsave+0x37/0
                 [325022.142086]  [] __wake_up+0x22/0x4f
[325022.142086]  [] __wake_up+0x22/0x4f

[325022.142086]  [] vprintk+0x33b/0x36f
[325022.142086]  [] number+0x10e/0x201
[325022.142086]  [] printk+0x4e/0x56
[325022.142086]  [] nv_start_xmit_optimized+0x449/0x50b [forcedeth]
[325022.142086]  [] delay_tsc+0x1c/0x42
[325022.142086]  [] _raw_spin_lock+0xf4/0x120
[325022.142086]  [] _spin_lock_irqsave+0x37/0x3f
[325022.142086]  [] tg_shares_up+0xcf/0x195
[325022.142086]  [] tg_shares_up+0xcf/0x195
[325022.142086]  [] tg_shares_up+0x0/0x195
[325022.142086]  [] tg_nop+0x0/0x6
[325022.142086]  [] walk_tg_tree+0x90/0xbc
[325022.142086]  [] walk_tg_tree+0x0/0xbc
[325022.142086]  [] try_to_wake_up+0xb0/0x238
[325022.142086]  [] __wake_up_common+0x41/0x74
[325022.142086]  [] __wake_up+0x38/0x4f
[325022.142086]  [] vprintk+0x33b/0x36f
[325022.142086]  [] __qdisc_run+0xe0/0x1c2
[325022.142086]  [] printk+0x4e/0x56
[325022.142086]  [] ip_queue_xmit+0x28f/0x2e2
[325022.142086]  [] sk_stream_alloc_skb+0x2f/0xd5
[325022.142086]  [] delay_tsc+0x1c/0x42

[325022.142086]  [] _raw_spin_lock+0xf4/0x120
[325022.142086]  [] _spin_lock_irqsave+0x37/0x3f
[325022.142086]  [] tg_shares_up+0xcf/0x195
[325022.142086]  [] tg_shares_up+0xcf/0x195
[325022.142086]  [] tg_shares_up+0x0/0x195
[325022.142086]  [] tg_nop+0x0/0x6
[325022.142086]  [] walk_tg_tree+0x90/0xbc
[325022.142086]  [] walk_tg_tree+0x0/0xbc
[325022.142086]  [] try_to_wake_up+0xb0/0x238
[325022.142086]  [] autoremove_wake_function+0x9/0x2e
[325022.142086]  [] __wake_up_common+0x41/0x74
[325022.142086]  [] __wake_up+0x38/0x4f
[325022.142086]  [] __queue_work+0x22/0x32
                 [325022.142086]  [] rpc_async_schedule+0x0/0xc
[325022.142086]  [] queue_work_on+0x37/0x40
[325022.142086]  [] run_workqueue+0xed/0x1ed
[325022.142086]  [] run_workqueue+0x97/0x1ed
[325022.142086]  [] worker_thread+0xd8/0xe3
[325022.142086]  [] autoremove_wake_function+0x0/0x2e
[325022.142086]  [] worker_thread+0x0/0xe3
[325022.142086]  [] kthread+0x47/0x76
[325022.142086]  [] schedule_tail+0x27/0x5f

[325022.142086]  [] child_rip+0xa/0x11
[325022.142086]  [] kthreadd+0x167/0x18c
[325022.142086]  [] kthread+0x0/0x76
[325022.142086]  [] child_rip+0x0/0x11
[325022.142086]