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[Bug runtime/17245] New: pthreadprobes.exp sometimes segfaults on f20


https://sourceware.org/bugzilla/show_bug.cgi?id=17245

            Bug ID: 17245
           Summary: pthreadprobes.exp sometimes segfaults on f20
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
          Assignee: systemtap at sourceware dot org
          Reporter: mcermak at redhat dot com

Created attachment 7740
  --> https://sourceware.org/bugzilla/attachment.cgi?id=7740&action=edit
test logs

>From time to time pthreadprobes.exp causes segfault on fedora20:

[  529.733125] stapdyn[2967]: segfault at 2a254 ip 00007f9e6491df51 sp
00007fffef0043f0 error 4 in libstackwalk.so.8.1.2[7f9e648ef000+58000]
[  531.432067] pthreadprobes[2971]: segfault at 0 ip           (null) sp
00007fff4f4e11e8 error 14 in pthreadprobes[400000+2000]


Reproduced using e6e7c33 bits on top of 3.13.9-200.fc20.x86_64. The
systemtap.log and stap-report output attached. For me this happens once per 10
runs or so.

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