Hi everyone,
In my laptop soft lockup happens when modprobe nouveau at boot time , it 
report soft lockup repeatedly(full kernel log is attached):

Apr 27 23:03:43 wjx-IdeaPad-Y430 kernel: [  108.084004] BUG: soft lockup 
- CPU#1 stuck for 22s! [modprobe:559]
... ...
Apr 27 23:03:43 wjx-IdeaPad-Y430 kernel: [  108.084004] Call Trace:
Apr 27 23:03:43 wjx-IdeaPad-Y430 kernel: [  108.084004] [<f8b4c720>] ? 
init_condition+0x70/0xa0 [nouveau]
Apr 27 23:03:43 wjx-IdeaPad-Y430 kernel: [  108.084004] [<f8b4ee27>] 
nvbios_exec+0x37/0xd0 [nouveau]
Apr 27 23:03:43 wjx-IdeaPad-Y430 kernel: [  108.084004] [<f8b4f2ca>] 
nvbios_init+0x8a/0x130 [nouveau]
... ...

Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084003] BUG: soft lockup 
- CPU#1 stuck for 23s! [modprobe:559]
... ...
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] Call Trace:
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] [<f8b46785>] 
bit_entry+0x55/0xf0 [nouveau]
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] [<f8b4b115>] 
init_table+0x25/0xb0 [nouveau]
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] [<c107033d>] ? 
hrtimer_interrupt+0x16d/0x280
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] [<f8b4b1c8>] 
init_table_+0x28/0x190 [nouveau]
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] [<f8b4c59f>] 
init_condition_met+0x2f/0x140 [nouveau]
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] [<f8b4c72e>] 
init_condition+0x7e/0xa0 [nouveau]
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] [<f8b4ee27>] 
nvbios_exec+0x37/0xd0 [nouveau]
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] [<f8b4f2ca>] 
nvbios_init+0x8a/0x130 [nouveau]
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] [<f8b44470>] ? 
nouveau_subdev_fini+0x70/0x80 [nouveau]
Apr 27 23:03:07 wjx-IdeaPad-Y430 kernel: [   72.084004] [<f8b548df>] 
nouveau_devinit_init+0x1f/0x30 [nouveau]
... ...

And my kernel version is 3.8.8, and graphic card is nvidia Geforce 9300GS.
Any suggestion for this issue or how can I debug this?