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Problem Report 1373 Details

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This page provides all information on Problem Report 1373.

Report 1373 Actions

    Problem Report Number 1373
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0655
    Raised 1970-01-01 08:00
    Updated 2003-03-13 08:00
    Published 1996-11-01 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 11
    Problem Summary TSD4U.00162 This test may fail on implementations which have logical limits set higher than physical system limits.
    Problem Text
    The method that this test uses to determine how much memory can be allocated
    under the limit does not always results in finding the actual resource limit.
    It finds the point at which the system resources are becoming exhausted.
    This test finds this limit by iteratively calling sbrk() until it fails,
    treating this at the upper limit of the resourses. 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.

    If this test is modified to decrease the RLIMIT_DATA ceiling to a point
    just beyond the end of the program's data area, then on the subsequent call
    to sbrk(), the expected correct error would consistently result.
    Test Output
    TEST CASE: setrlimit

    TEST PURPOSE #11
    If the implementation does not inhibit enforcement of
    limits for the resource RLIMIT_DATA:
    When the data segment size of the calling process
    exceeds the limit set by a call to int setrlimit(int
    resource, const struct rlimit *rlp) for resource
    RLIMIT_DATA brk(), malloc(), and sbrk() shall fail and
    set errno to ENOMEM.
    PREP: Check if the limits are enforced
    PREP: Obtain the system page size by call to
    sysconf(_SC_PAGESIZE)
    TEST: Set limits with setrlimit
    INFO: Raise succeeded
    TEST: When break value exceeds the limit sbrk()
    fails and sets errno to ENOMEM
    ERROR: Call to sbrk() did not set errno to ENOMEM
    Expected: 12(ENOMEM) Received: 11(EAGAIN - No more processes)
    11 FAIL

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    We agree this is a test suite deficiency in the test
    suite version(s) listed.

    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.

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