Unable to handle kernel paging request for instruction fetch???

[Scott Wood]

郭劲 wrote:
> Hi,all,
> 
> I run the iperf tool to test the ethernet throughput for my MPC8360E board, after
> about 20 minutes, the exception is happened. Could you tell me why? 
> 
> 
> Unable to handle kernel paging request for instruction fetch
> Faulting instruction address: 0x4e800020
> Oops: Kernel access of bad area, sig: 11 [#1]
> MPC836x MDS
> Modules linked in: encoder mpc_sync k_spi(P)

Can you reproduce it with kallsyms enabled, and without the out-of-tree 
module(s)?

> NIP: 4e800020 LR: c01a08d4 CTR: 00000000

Something branched to a bad address from 0xc01a08d0.  Can you look up 
what line that is in your kernel?

-Scott