question about oops and panic

Hi, 1. I think oops and panic are both some way to deal with errors occurs in kernel space. Is there any relationship between them? 2. I make a NULL pointer reference deliberately in a kernel module and get an oops like: ... ... ... Aug 29 00:58:45 lfs kernel: Call Trace: Aug 29 00:58:45 lfs kernel: [<c100112d>] ? do_one_initcall+0x44/0x120 Aug 29 00:58:45 lfs kernel: [<c10517ce>] ? sys_init_module+0xa7/0x1d9 Aug 29 00:58:45 lfs kernel: [<c138d49d>] ? syscall_call+0x7/0xb ... ... ... I wonder what is the meaning of the tow numbers after a function name.