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From: "mcermak at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug translator/10607] need way to protect sensitive tapset globals
Date: Tue, 03 Nov 2015 08:25:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D10607

Martin Cermak <mcermak at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |mcermak at redhat dot com
         Resolution|---                         |FIXED

--- Comment #3 from Martin Cermak <mcermak at redhat dot com> ---
Can be done using private global variable introduced by PR19136:=20

=3D=3D=3D=3D=3D=3D=3D
$ stap -e 'global gt=3D5; private pt=3D6; probe oneshot {println(gt, ",", p=
t)}'
5,6
$ stap -G gt=3D7 -e 'global gt=3D5; private pt=3D6; probe oneshot {println(=
gt, ",",
pt)}'
7,6
$ stap -G pt=3D7 -e 'global gt=3D5; private pt=3D6; probe oneshot {println(=
gt, ",",
pt)}'
ERROR: Couldn't insert module
'/tmp/stapJOEsIt/stap_c338a51e10d33545e0988128fc6f2e20_1117.ko': Unknown sy=
mbol
in module
WARNING: /usr/local/bin/staprun exited with status: 1
Pass 5: run failed.  [man error::pass5]
$ stap --dyninst -G pt=3D7 -e 'global gt=3D5; private pt=3D6; probe oneshot
{println(gt, ",", pt)}'
stapdyn: WARNING: Ignoring unknown module option '__global_pt'
5,6
$
=3D=3D=3D=3D=3D=3D=3D

Commit 1b9d316 extends the private.exp testcase to cover this scenario.

--=20
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