I think when u create a shared memory it will created in the kernel space. I have this strange problem bugging me... I have written a daemon which creates a shared memory and puts in the data. Then i have a kernel module which is always installed after starting the daemon. But when I try to access the shared memory that has been created using the daemon I am not seeing any data that has been put in by the daemon. When i print the addresses of the shared memory I see different addresses. I am using the same key_t to in the kernel module ,which i used to create using the daemon, to access the shared memory. I am not understanding what is the problem... Can anyone pls tell me what might be the problem... thanks, raghu -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/