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[Bug runtime/20279] New: in parallel testsuite mode, we're getting SIGABORTs


https://sourceware.org/bugzilla/show_bug.cgi?id=20279

            Bug ID: 20279
           Summary: in parallel testsuite mode, we're getting SIGABORTs
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
          Assignee: systemtap at sourceware dot org
          Reporter: dsmith at redhat dot com
  Target Milestone: ---

When running the testsuite in parallel mode, I see several of the following
messages on the console:

[ 5619.908020] rm[61446]: unhandled signal 11 at 00003fffdc83ff90 nip
00003fffa8a51f38 lr 00003fffa8a34008 code 30001
[ 6611.824811] bz5274[54850]: unhandled signal 11 at 0000000000000000 nip
0000000000000000 lr 0000000000000000 code 30001

On RHEL7 ppc64, I see around 7 of these during a full testsuite run. I don't
see these errors when the testsuite is run in non-parallel mode.

I'm not 100% sure it is related, but the testsuite also got hung at the end of
this run, waiting on a 'loop' process (from unprivileged_probes.exp) to be
killed.

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