hi all , the mistake i did in slab allocation was : my routine was bing called from a softirq , ie no process context and i was using SLAB_KERNEL , i changed it to SLAB_ATOMIC , everthing is working fine . thanx Rgds , Pankaj chauhan ________________________________________________________________________ Yahoo! India Insurance Special: Be informed on the best policies, services, tools and more. Go to: http://in.insurance.yahoo.com/licspecial/index.html -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/