按键驱动出现问题 求急

我也将按键驱动加载进去了，当按下按键时 等一会儿就出现了下面的问题：

BUG: soft lockup - CPU#0 stuck for 61s! [swapper:0]  
Modules linked in: button  
   
Pid: 0, comm: swapper  
CPU: 0 Not tainted (2.6.33 #17)  
PC is at synchronize_irq+0x18/0xc0  
LR is at synchronize_irq+0xc/0xc0  
pc : [<c007819c>] lr : [<c0078190>] psr: 00000013  
sp : c03ddca0 ip : c03ddd10 fp : 00000000  
r10: 30024ac4 r9 : 41129200 r8 : 30024b2c  
r7 : 0000003f r6 : c03ea714 r5 : 00000000 r4 : c38a8560  
r3 : 00028702 r2 : c03ea214 r1 : 00000010 r0 : c03ea714  
Flags: nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel  
Control: 0000717f Table: 33a4c000 DAC: 00000017

Flags: nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel  
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