From: "agentzh at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug dyninst/23605] New: Intermittent errors when running a simplest stap script against a simplest target program
Date: Tue, 04 Sep 2018 18:52:00 -0000 [thread overview]
Message-ID: <bug-23605-6586@http.sourceware.org/bugzilla/> (raw)
https://sourceware.org/bugzilla/show_bug.cgi?id=23605
Bug ID: 23605
Summary: Intermittent errors when running a simplest stap
script against a simplest target program
Product: systemtap
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: dyninst
Assignee: systemtap at sourceware dot org
Reporter: agentzh at gmail dot com
Target Milestone: ---
When running a trivial stap script against a trivial C program process, I
occasionally see the following error:
```
$ stap --runtime=dyninst -c ./a.out a.stp
IRPC on terminated process, ret false!
--SERIOUS-- #124: `�3<�^?
stapdyn: ERROR: Couldn't load
/tmp/stapsBBcUd/stap_c7fd539785fa2c0bcc7ddfb6321bcd6f_1605.so into the target
process
WARNING: /opt/stap-plus/bin/stapdyn exited with status: 1
Pass 5: run failed. [man error::pass5]
```
The a.stp file looks like this:
```
probe process.function("main") {
println(@var("a"));
}
```
And the C program is like this:
```
int a = -32;
int main(void) { a++; return 0; }
```
The C program is compiled with `gcc -g`.
What could go wrong here please?
I'm not Fedora 27 x86_64 (kernel 4.16.16):
```
$ uname -r
4.16.16-200.fc27.x86_64
```
I'm using the current master branch of systemtap.
--
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next reply other threads:[~2018-09-04 18:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-04 18:52 agentzh at gmail dot com [this message]
2018-09-04 19:44 ` [Bug dyninst/23605] " agentzh at gmail dot com
2018-09-04 20:32 ` agentzh at gmail dot com
2018-09-04 21:14 ` agentzh at gmail dot com
2019-04-05 15:25 ` scox at redhat dot com
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