Why are there no debug symbols in my vmlinux when using gdb with /proc/kcore?

Question

I\'ve configure all CONFIG_DEBUG_ related options to y,but when I try to debug the kernel,it says no debug symbols found:

gdb /usr/         


        

Answer 1

It's also possible when you package your vmlinuz image, the debug symbols were stripped (when using make-kpkg to build deb package for linux kernel). So you have to use the built vmlinux file under your linux source tree to have those debug symbols.