Comment 15 for bug 669641

Got a chance to retest against an officially built kernel and dbgsym, the technique works, so
now all that's left is to independently verify the entire patch on a new build and call
it done.

root@ubuntu:~# uname -a
Linux ubuntu 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

cat > /etc/apt/sources.list.d/ddebs.list << EOF
deb http://ddebs.ubuntu.com/ precise main restricted universe multiverse
EOF

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ECDCAD72428D7C01
apt-get update
apt-get install linux-image-$(uname -r)-dbgsym

serio='/lib/modules/3.2.0-23-generic/kernel/drivers/input/serio/serio_raw.ko'
dbg='/usr/lib/debug/lib/modules/3.2.0-23-generic/kernel/drivers/input/serio/serio_raw.ko'

objcopy --add-gnu-debuglink=$dbg $serio
objdump -h $serio | grep -A2 debuglink

root@ubuntu:~# stap -l 'module("serio_raw").function("*")'
module("serio_raw").function("INIT_LIST_HEAD@/build/buildd/linux-3.2.0/include/linux/list.h:24")
module("serio_raw").function("__list_add@/build/buildd/linux-3.2.0/include/linux/list.h:37")
module("serio_raw").function("__list_del@/build/buildd/linux-3.2.0/include/linux/list.h:86")
module("serio_raw").function("__list_del_entry@/build/buildd/linux-3.2.0/include/linux/list.h:99")
...

any other module I try to probe comes up empty.