List, When oops comes up, I can trace offending code line using 1. gdb *.ko 2. list *offending_address to get an offending code line in commercial distribution. But if I download newer kernel and do 1.make 2.make modules_install 3. make install There is no symbol table compalin when I do "list *offending_address". I could not figure out why. Any help will be appreciated. ---henry