swapon swapfile on Bamboo board

[Youngchul Bang (방영철)]

Hi,

I'm tring to use a swapfile on Bamboo reference board.  I got some of
messages.  Is it a kernel BUG?

I'm using kernel 2.6.11.8, which patched [1]"PPC440EP SoC and Bamboo
board support".
[1] http://ozlabs.org/pipermail/linuxppc-embedded/2005-April/017648.html

Commands to use a swapfile are following:
/# dd if=/dev/zero of=swapfile bs=1024 count=65536
65536+0 records in
65536+0 records out
67108864 bytes transferred in 82.371510 seconds (814710 bytes/sec)
/# mkswap swapfile                                                
Setting up swapspace version 1, size = 67104 kB                                 
no label, UUID=daed5412-feb7-42ed-a925-f80e1c7782fb                             
/# swapon swapfile                                                
kernel BUG in swp_entry_to_pte at include/linux/swapops.h:67!                   
Oops: Exception in kernel mode, sig: 5 [#1]                                     
PREEMPT                                                                         
NIP: C00562A0 LR: C0056284 SP: C0D59EE0 REGS: c0d59e30 TRAP: 0700    Not tainted
MSR: 00029000 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 00                                 
TASK = c1c30430[928] 'swapon' THREAD: c0d58000                                  
Last syscall: 87                                                                
GPR00: 00000400 C0D59EE0 C1C30430 00000000 00000001 0000000A C021B875 C033AC10  
GPR08: 00000001 010B6000 C1087258 C02D0000 00004000 1001BAA4 100C0000 100A0000  
GPR16: 00000000 100DC368 C02E0000 00000000 00000001 C1882000 C0C8EC20 00000000  
GPR24: C10871B4 C030A7C0 00004000 04000000 FFFFFFEA C10B6000 C02D8ABC C10B6FF6  
NIP [c00562a0] sys_swapon+0x588/0xa04                                           
LR [c0056284] sys_swapon+0x56c/0xa04                                            
Call trace:                                                                     
 [c0001a88] ret_from_syscall+0x0/0x48                                           
Trace/breakpoint trap                                                           
/#  

Let me know what problem is.

Thanks in advice,

Youngchul.