Bug 215624 - Basic "hello-world" with systemtap doesn't work
Basic "hello-world" with systemtap doesn't work
Product: Fedora
Classification: Fedora
Component: systemtap (Show other bugs)
ia64 Linux
medium Severity medium
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Assigned To: Frank Ch. Eigler
Radek Bíba
Depends On:
Blocks: fedora-ia64
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Reported: 2006-11-14 16:36 EST by Tony Luck
Modified: 2007-11-30 17:11 EST (History)
0 users

See Also:
Fixed In Version: 0.5.10
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2006-11-14 18:39:37 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Tony Luck 2006-11-14 16:36:24 EST
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; InfoPath.1)

Description of problem:
The systemtap tutorial by Frank Eigler starts with:

# cat hello-world.stp
probe begin
   print("hello world\n")
# stap hello-world.stp

This fails.  Running with "-v" the first problem is that the generated .c file includes linux/config.h, which has been obsoleted in 2.6.18.  Workaround: make an empty config.h file.

Second problem: generated module will not load due to missing symbol. Dmesg(1) reports:

stap_9360: Unknown symbol kallsyms_lookup_name

Checking against the git log ... the export of this symbol was dropped when a new method was added to the kernel for symbol to address resolution.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:

Actual Results:
Module is built (once I created empty config.h file) but will not load.

Expected Results:
Module should have loaded and printed "hello world".

Additional info:
Comment 1 Tony Luck 2006-11-14 16:45:45 EST
Prarit said "be sure to file them against the devel branch of Fedora Core.  
Also, add "fedora-ia64" to the "blocks" field of the BZ".  Hope this is now 
Comment 2 Frank Ch. Eigler 2006-11-14 18:39:37 EST
Fedora rawhide already contains a newer 0.5.10 version that corrects this problem.
Comment 3 Tony Luck 2006-11-15 18:29:34 EST
Thanks ... 0.5.10 does indeed fix this.

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