Oops: Kernel access of bad area, sig: 11 [#1]

Hi. I'm developing a driver on PowerPC kernel version 3.10. Once In a while, I get the following OOPS and the system freezes. Unable to handle kernel paging request for data at address 0xffffffdc Faulting instruction address: 0xfb7780c8 Oops: Kernel access of bad area, sig: 11 [#1] When I look at the address where the paging fails, it looks like a wrong address (0xffffffdc). The stack trace points to a list_for_each() macro. Could it be that NULL linked list node container off was called ? Am I in the right direction ? Thanks, Ramon