[Bug dyninst/24884] New: stapdyn crashes with a segmentation fault

["avi at cloudius-systems dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=24884

            Bug ID: 24884
           Summary: stapdyn crashes with a segmentation fault
           Product: systemtap
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: dyninst
          Assignee: systemtap at sourceware dot org
          Reporter: avi@cloudius-systems.com
  Target Milestone: ---

Trying the following script:


#!/usr/bin/stap

# usage: task-histogram.stap process_name

global hist

probe process.mark("reactor_run_tasks_single_start") {
    ++hist[tid(), $arg1]
}

probe end {
    foreach ([tid, addr] in hist) {
        printf("%10d %8d 0x%x\n", hist[tid, addr], tid, addr)
    }
}


(trying to collect a histogram of tasks)

With this command line:

    stap --dyninst -x $(pgrep -x httpd) ./debug/task-histogram.stap

Crashes with

WARNING: /usr/bin/stapdyn exited with signal: 11 (Segmentation fault)


systemtap-4.1-1.fc30.x86_64

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