> When you use a custom kernel, you usually get to keep the pieces. > > Go buy a new car and change the engine and then see if they honor the > warranty. > > We stopped using Dell machines some time ago. For some reason there > reliability has been steadily falling. I don't know if they are doing > non-standard stuff in their bios's or just using less than optimal hardware > to cut costs, but I probably won't go back. > agree. I have turn back to original CentOS kernel, and then restart my program. In other words, my program run without PF_RING. By now, nothing happens. Therefore, it seems the bug results from PF_RING patch. Thanks for your help.