root@xubuntu:~# gdb /vmlinux

GNU gdb (GDB) 7.5.91.20130417-cvs-ubuntu

Copyright (C) 2013 Free Software Foundation, Inc.

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This GDB was configured as "i686-linux-gnu".

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<http://www.gnu.org/software/gdb/bugs/>...

Reading symbols from /vmlinux...done.

(gdb) target remote /dev/ttyS0

Remote debugging using /dev/ttyS0

Remote 'g' packet reply is too long: 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