vxworks的Pagefault问题

我最进用amd 的pentium，开发socket，出现里以下错误，请高人指点：
------------------------------------------------------------------------
Page fault  
Page Dir Base :0x7bb8000
Esp0  0x07bfe660 ；0x00000000, 0x000000000,0x00000000,0x000000000
Esp0  0x7bfe670 : 0x00000000, 0x000000000,0x00000000,0x000000000
Program  Count ；0x00000000
Cpde Selector: 0x00000008
Eflags Register :   0x00010202
Error Code ； 0x00310000
Page fault Addr： 0xffffffff
Task  : 0x7bfe684  “ mytask1”


Page fault  
Page Dir Base :0x7bb8000
Esp0  0x07a7b088 ；0x00000000, 0x000000000,0x00000000,0x000000000
Esp0  0x7a7b098 : 0x00000000, 0x000000000,0x00000000,0x000000000
Program  Count ；0x0031b7e2
Cpde Selector: 0x00000008
Eflags Register :   0x00010202
Error Code ； 0xeeee0000
Page fault Addr： 0x09080706
Task  : 0x7a7b0b0  “ mytask2”