Systemtap user space probing issue - Unknown symbol in module

[buddhika chamith]

Hi All,

Not sure if this has been addressed before. Checked the archive and
couldn't find a solution there. I tried user space probing with
Systemtap 3.0. But it gives me the following error.

$ sudo stap -e 'probe process("./h264ref").function("*") { printf("hello\n"); }'
ERROR: Couldn't insert module
'/tmp/stapsPVPF2/stap_b964ab648506800b700ce82c4e1cf5cd_167937.ko':
Unknown symbol in module
WARNING: /usr/bin/staprun exited with status: 1
Pass 5: run failed.  [man error::pass5]
Tip: /usr/share/doc/systemtap/README.Debian should help you get started.

My user account is in following groups.

stapdev stapusr stapsys

Kernel details

$ uname -a
Linux 3.19.0-28-generic #30~14.04.1-Ubuntu SMP  x86_64 x86_64 x86_64 GNU/Linux

$grep CONFIG_UPROBES /boot/config-`uname -r`
CONFIG_UPROBES=y

Systemtap version

$ stap --version
Systemtap translator/driver (version 3.0/0.158, non-git sources)
Copyright (C) 2005-2015 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
enabled features: BOOST_SHARED_PTR BOOST_STRING_REF LIBSQLITE3 NLS
TR1_UNORDERED_MAP READLINE

What do I need to do in order to fix this?

Thanks