Kernel bug?

Hi, I am using uClinux 3.1 and trying to run on the NEEK, but after nios2-terminal, I got this unhandle message.

Unhandled exception #12 in kernel mode
r1: c6000cc0 r2:00000000 r3: 00000b1c r4: 80000000
r5: 2aac70c0 r6: 00000f40 r7: ffffe0000 r8: c7049c88
r13: c704ede0 r14: c655cbb4 r15: 00000001
ra: c60b553c fp: c7c06ad4 sp: c7c17d5c gp: 00000000
ea: c60b512c estatus: 00000001
BUG: failure at /root/Desktop/nios2-linux/linux-2.6/mm/slab.c:501/page_get_cashe()!
Kernel panic - not syncing: BUG!

Have anyone seem this before? Any help is appreciated.