Hi, In some parts of the kernel current->kernel_stack_page is there, but in task_struct, there is no such variable, kernel_stack_page. What I am missing?? sourav - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.surriel.com/kernelnewbies.shtml