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[Bug runtime/15880] on ppc64, getting a kernel panic when running systemtap.stress/conversions.exp
- From: "dsmith at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Fri, 23 Aug 2013 15:02:27 +0000
- Subject: [Bug runtime/15880] on ppc64, getting a kernel panic when running systemtap.stress/conversions.exp
- Auto-submitted: auto-generated
- References: <bug-15880-6586 at http dot sourceware dot org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=15880
--- Comment #2 from David Smith <dsmith at redhat dot com> ---
Here's some additional information. The conversions.exp testcase runs several
scripts: conversions.stp, conversions_trace.stp (testing tracepoints),
conversions_profile.stp (testing timer.profile), and conversions_perf.stp
(testing perf probes).
The panic happens only when the conversions_perf.stp test is run. In addition,
this appears to be related to the user_string_n() function, which was changed
by bug #15044. Note that the panic doesn't happen if I run conversions_perf.stp
with the '--compatible=2.2' flag.
To sum up, the following doesn't cause a panic:
# stap --compatible=2.2 -DMAXSKIPPED=99999 -DMAXERRORS=40 -v
../src/testsuite/systemtap.stress/conversions_perf.stp 0xffffffff
But this does:
# stap -DMAXSKIPPED=99999 -DMAXERRORS=40 -v
../src/testsuite/systemtap.stress/conversions_perf.stp 0xffffffff
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