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[Bug tapsets/18598] staprun markers don't exist
- From: "jistone at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Thu, 25 Jun 2015 17:15:11 +0000
- Subject: [Bug tapsets/18598] staprun markers don't exist
- Auto-submitted: auto-generated
- References: <bug-18598-6586 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=18598
Josh Stone <jistone at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jistone at redhat dot com
--- Comment #1 from Josh Stone <jistone at redhat dot com> ---
The more direct way to check existence is "readelf -n", and this is revealing:
$ readelf -n /usr/local/bin/staprun
readelf: Error: Input file '/usr/local/bin/staprun' is not readable.
That's because staprun has mode 4110 (suid|xusr|xgrp). Nobody has read
permission, which effectively means only root can read it.
Although you wrote a '#' before your commands, which usually indicates a root
prompt... Is that so, or were you running as a user?
$ sudo readelf -n /usr/local/bin/staprun
[...]
Displaying notes found at file offset 0x0002ba98 with length 0x000001f4:
Owner Data size Description
stapsdt 0x00000036 NT_STAPSDT (SystemTap probe
descriptors)
Provider: staprun
Name: remove__module
Location: 0x000000000040856e, Base: 0x0000000000427358, Semaphore:
0x0000000000000000
Arguments: 8@%rbx
stapsdt 0x00000036 NT_STAPSDT (SystemTap probe
descriptors)
Provider: staprun
Name: insert__module
Location: 0x000000000040aa18, Base: 0x0000000000427358, Semaphore:
0x0000000000000000
Arguments: 8@%r12
[etc]
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