Hi all, I read following statement in "Understanding Linux kernel" "the process on behalf of which an interrupt handler is executed must always stay in the TASK_RUNNING state, or a system freeze could occur." I am not able to understand it clearly. so can anybody plz explain it to me. Thanks in advance, Deepak Joshi. ___________________________________________________________ Yahoo! Photos ? NEW, now offering a quality print service from just 8p a photo http://uk.photos.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/