Hi, I have written a module for version 2.4.7-10 and it works perfect. I tried compiling the module for version 2.4.17 and it gives me errors when I try to load it. unresolved symbols: sys_msgget unresolved symbols: sys_msgsnd I have included "linux/msg.h" which has the prototype for these functions. Any pointers on why this might be happening. Thanks, SP __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/