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Problem Report 1371 Details

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This page provides all information on Problem Report 1371.

Report 1371 Actions

    Problem Report Number 1371
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0653
    Raised 1970-01-01 08:00
    Updated 2003-03-13 08:00
    Published 1996-11-12 08:00
    Product Standard Internationalised System Calls and Libraries Extended (UNIX 95)
    Certification Program The Open Brand certification program
    Test Suite VSU version 4.1.0
    Test Identification Base/setrlimit 19
    Problem Summary TSD4U.00164 This test may fail intermittently when run on a heavily used system.
    Problem Text
    This test intermittently fails. The test uses a recursive
    function, recursive_fn(), to find the stack resource limit. It
    does not distinguish between finding a resource limit and running
    out of system resources. On our implementation, the resource
    limits are set too high for this to be a good approach. Because
    this test does not distinguish between finding a resource limit
    and running out of system resources, the test is fundamentally
    flawed. In order for this test to function properly, it needs to
    be modified to decrease the resource limits to a value just
    beyond the end of the program's data area.
    Test Output
    TEST CASE: setrlimit

    TEST PURPOSE #19
    If the implementation does not inhibit enforcement of
    limits for the resource RLIMIT_STACK:
    When the size of the stack for the calling process
    would exceed the limit set by a call to int
    setrlimit(int resource, const struct rlimit *rlp) for
    resource RLIMIT_STACK the implementation shall not
    automatically grow the stack.
    PREP: Save the current stack limits
    PREP: Check if limits are enforced
    TEST: Set limits with setrlimit
    INFO: Raise succeeded
    PREP: Get set to catch SIGSEGV on an alternate stack
    PREP: Call sigsetjmp() to save the environment
    PREP: Make the stack grow such that a SIGSEGV is
    generated. Awaiting return from siglongjmp()
    PREP: Set to catch SIGSEGV again
    PREP: Call sigsetjmp() to save the environment
    PREP: Make the stack grow such that another SIGSEGV is
    generated. Awaiting return from siglongjmp()
    TEST: The implementation does not automatically
    grow the stack
    ERROR: The stack automatically grew once the limit was
    reached
    19 FAIL

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    We recommend this request be refused.

    The submitter has a valid point. But the suggested change leads
    to problems with other implementations. We can see no approach
    that accomodates all portability issues and allows the test to be
    run reliably on systems with limited resources and/or a
    substantial user population.

    We'll add a recommendation to the VSU documentation that this
    test be run on a dedicated, lightly loaded system. The submitter
    should adopt this solution for their branding runs.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution No Resolution Given
    Review Conclusion
    We understand this test has been run with a lightly loaded system and
    still fails.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Test Suite Deficiency (TSD)
    Review Conclusion
    This is an agreed Test Suite Deficiency.

    Problem Reporting System Options:

     

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