[Bug runtime/10427] New: Multiple tracepoint OKs!

["mjw at redhat dot com" <sourceware-bugzilla@sourceware.org>]

On a rawhide install (2.6.31-0.81.rc3.git4.fc12.x86_64) the
testsuite/systemtap.base/tracepoints.stp sometimes produces multiple triggers of
the following probe:

probe all_tracepoints!, begin {
    println("tracepoints OK")
    exit()
}

But only with clean caches.

$ rm -rf ~/.systemtap && stap -v testsuite/systemtap.base/tracepoints.stp

Pass 1: parsed user script and 58 library script(s) in 90usr/10sys/110real ms.
Pass 2: analyzed script: 60 probe(s), 2 function(s), 0 embed(s), 1 global(s) in
6600usr/8570sys/14727real ms.
Pass 3: translated to C into
"/tmp/stapTj3U43/stap_6a431ab5b96059ed64495d90c1c45405_20000.c" in
10usr/0sys/11real ms.
Pass 4: compiled C into "stap_6a431ab5b96059ed64495d90c1c45405_20000.ko" in
4530usr/1600sys/6163real ms.
Pass 5: starting run.
tracepoints OK
tracepoints OK
tracepoints OK
Pass 5: run completed in 30usr/60sys/124real ms.

With the cache in place, it never seems to trigger multiple times afterwards. It
also doesn't trigger multiple times ever on fedora 11 (2.6.29.6-213.fc11.x86_64).

-- 
           Summary: Multiple tracepoint OKs!
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: mjw at redhat dot com
                CC: jistone at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=10427

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