From: "fche at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sourceware.org
Subject: [Bug runtime/26702] New: historical intermittent rt-linux crashes
Date: Fri, 02 Oct 2020 20:50:26 +0000 [thread overview]
Message-ID: <bug-26702-6586@http.sourceware.org/bugzilla/> (raw)
https://sourceware.org/bugzilla/show_bug.cgi?id=26702
Bug ID: 26702
Summary: historical intermittent rt-linux crashes
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: runtime
Assignee: systemtap at sourceware dot org
Reporter: fche at redhat dot com
Target Milestone: ---
While numerous rt-linux tweaks to the runtime have been
made over the years, there may still be some problems.
Some problem reproducer from years ago may still cause
problems now. Putting them here for the record.
Via <smakarov@redhat.com>:
Looked into reducing the conversions_profile.stp test case. So far I've reduced
down to
$ stap -g --suppress-time-limits -vv -DMAXSKIPPED=99999 -DMAXERRORS=40 -e
'global hits; probe timer.profile { if (hits == 0) { hits = 1;
print(kernel_string(0xfffffff)) } }'
and
$ stap -g --suppress-time-limits -vv -DMAXSKIPPED=99999 -DMAXERRORS=40 -e
'global hits; probe timer.profile { if (hits == 0) { hits = 1 } }'
The following works fine without crashing:
$ stap -g --suppress-time-limits -vv -DMAXSKIPPED=99999 -DMAXERRORS=40 -e
'probe timer.profile { print(kernel_string(0xfffffff)) }'
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