[Bug tapsets/21362] New: more syscall nesting problems

[dsmith at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=21362

            Bug ID: 21362
           Summary: more syscall nesting problems
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tapsets
          Assignee: systemtap at sourceware dot org
          Reporter: dsmith at redhat dot com
  Target Milestone: ---

After filing bug #21353, I wondered if the syscall testsuite couldn't find
syscall nesting issues. The systemtap test script uses indentation to show
nesting:

msg_queue: msgctl (2523136, IPC_64|IPC_RMID, 0x0) =
  msg_queue: msgctl (2523136, IPC_64|IPC_RMID, 0x0) = 0

But, the test script looking at that output didn't care that syscall nesting
was going on. With that changed, I'm seeing several failures. On RHEL7 x86_64,
I'm seeing failures in the following tests: lseek, msg_queue, semop, uid, and
uid16.

These failures should be investigated and fixed. I'm sure the list of failing
tests will be architecture dependent.

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