Hi, On Thu, 18 Nov 2004 10:27:49 +0530, Mandeep Sandhu <mandeep_sandhu@xxxxxxxxxxx> wrote: > Hi all, > > a basic question. How does the kernel handle NULL pointer > dereferencing inside kernel space. Supposing I initialise a pointer > to NULL (i.e 0), and derefernce it then why do I get an oops? > Is 0 not a valid address? Also I've heard that the value of NULL can > change from processor to processor (I think on PowerPC 0 is a valid > address). Please consult: http://www.eskimo.com/~scs/C-faq/s5.html for a rather complete discussion of NULL pointers. Google is your friend (sometimes more than the ML :) ) -Nish -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
