[Bug runtime/19874] New: stap -c CMD run-time limited to 60s due to uncleared alarm()

["fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=19874

            Bug ID: 19874
           Summary: stap -c CMD run-time limited to 60s due to uncleared
                    alarm()
           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: ---

commit 90e6b60db3 introduced an alarm(60) call in stapio's "-c CMD" preparatory
code, as a protection against a deceased parent process.  Unfortunately, the
code neglected to clear the alarm in the case of successful synch, and the
alarm survived the subsequent -c CMD execve().  That in turn kills CMD after 60
seconds.  Whoops.

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