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Problem Report 1570 Details

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Report 1570 Actions

    Problem Report Number 1570
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0852
    Raised 2002-05-30 08:00
    Updated 2003-03-13 08:00
    Published 2002-06-06 08:00
    Product Standard Internationalised System Calls and Libraries Extended V2 (UNIX 98)
    Certification Program The Open Brand certification program
    Test Suite VSU version 5.1.2
    Test Identification CAPI.os/xcurses/delwin all
    Problem Summary TSD4U.00313 A problem with the locally defined malloc() function may cause the testset to abort during startup.
    Problem Text

    The test in question leaves a core file in TESTROOT/tset/CAPI.os/xcurses/delwin/

    Snippet from trace on the core file:

    SIGSEGV: Segmentation Fault
    $c
    $c
    malloc+0x4c(4, 0, 0, 0, 0, 0)
    tet_bufchk+0x7c(ffad5a70, ffad5a6c, 4, 0, 0, 6e9d0)
    tet_buftrace+0x160(ffad5a70, ffad5a6c, 4, 3c4c0, 1ae, 0)
    tet_minfoline+0x1b8(ffad5e6c, 1, 0, 0, 0, 0)
    tet_infoline+0x3c(3d180, 4, 0, 0, 0, 0)
    free+0x9c(6e9b0, ffad5f54, 6e970, 72656100, 1ae, 0)
    tet_minfoline+0x534(ffad630c, 1, 0, 0, 0, 0)
    tet_infoline+0x3c(3d180, 4, 0, 0, 0, 0)
    free+0x9c(6e950, ffad63f4, 6e910, 72656100, 1ae, 0)
    tet_minfoline+0x534(ffad67ac, 1, 0, 0, 0, 0)
    tet_infoline+0x3c(3d180, 4, 0, 0, 0, 0)
    free+0x9c(6e8f0, ffad6894, 6e8b0, 72656100, 1ae, 0)
    tet_minfoline+0x534(ffad6c4c, 1, 0, 0, 0, 0)
    ...
    (continues for many pages)
    tet_minfoline+0x534(ffbfde6c, 1, 0, 0, 0, 0)
    tet_infoline+0x3c(3d180, 4, 0, 0, 0, 0)
    free+0x9c(569b0, ffbfdf54, 56970, 0, 1ae, 0)
    tet_minfoline+0x534(ffbfe30c, 1, 0, 0, 0, 0)
    tet_infoline+0x3c(3d180, 4, 0, 0, 0, 0)
    free+0x9c(56950, ffbfe3f4, 56910, 206d76, 1ae, 0)
    tet_minfoline+0x534(ffbfe7ac, 1, 0, 0, 0, 0)
    tet_infoline+0x3c(3d180, 4, 0, 0, 0, 0)
    free+0x9c(568f0, ffbfe894, 568b0, 6b0000, 1ae, 0)
    tet_minfoline+0x534(ffbfec4c, 1, 0, 0, 0, 0)
    tet_infoline+0x3c(3d180, 4, 0, 0, 0, 0)
    free+0x9c(56890, ffbfed2c, 56860, 0, 1ae, 0)
    tet_minfoline+0x534(ffbff0ec, 1, 0, 0, 0, 0)
    tet_infoline+0x3c(3d1a0, 1fc, 0, 0, 0, 0)
    malloc+0x78(1fc, 0, 0, 0, 0, 0)
    realloc+0xc(56440, 1fc, 0, 0, 0, 0)
    tet_bufchk+0xcc(43580, 43584, 1fc, 0, 0, 0)
    tet_buftrace+0x160(43580, 43584, 1fc, 3c36d, c3, 56640)
    tet_config+0x2d8(1, ffbffc74, 3ff, ffbfff6b, 0, ffbff72d)
    tet_tcm_main+0x9c(1, ffbffc74, 0, 23708, 270f8, ffbffd9c)
    main+0x68(1, ffbffc74, ffbffc7c, 3b800, 0, 0)
    _start+0x108(0, 0, 0, 0, 0, 0)

    The trace of the corefile shows the test never gets to excuting any of the
    xcurses routines. The test defines its own memory management routines like
    malloc/realloc/free to detect invalid memory operations by the curses library.
    The malloc routine defined in delwin.c has only 256 buckets to trace the memory
    allocation. Therefore, if malloc() is called more than 256 times (without free()
    call), it fails and tries to record the failure "ERROR: Too many mallocs" using
    tet_infoline(). But tet_infoline() also may call malloc() and free(). As a result,
    we can easily image that will enter into an infinite recursive loop. This loop is
    happening before the actual test routine 'test1A()' gets called because tet_*
    routines calls malloc() more than 256 times.


    Test Output
    10|1001 /tset/CAPI.os/xcurses/delwin/T.delwin 18:52:30|TC Start, scenario ref 10
    03-0
    520|1001 0 00000895 1 517|ERROR: Free for unmalloced area
    520|1001 0 00000895 1 518|ERROR: Free for unmalloced area
    510|1001|system 0: tet_result(2) called from test case startup or cleanup functi
    on
    510|1001|system 0: tet_result(2) called from test case startup or cleanup functi
    on
    520|1001 0 00000895 1 516|ERROR: Free for unmalloced area
    520|1001 0 00000895 1 519|ERROR: Free for unmalloced area
    510|1001|system 0: tet_result(2) called from test case startup or cleanup functi
    on
    520|1001 0 00000895 1 520|ERROR: Free for unmalloced area
    510|1001|system 0: tet_result(2) called from test case startup or cleanup functi
    on
    510|1001|system 0: tet_result(2) called from test case startup or cleanup functi
    on
    520|1001 0 00000895 1 515|ERROR: Free for unmalloced area
    520|1001 0 00000895 1 521|ERROR: Free for unmalloced area
    510|1001|system 0: tet_result(2) called from test case startup or cleanup functi
    on
    520|1001 0 00000895 1 522|ERROR: Free for unmalloced area
    ...

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    This is accepted as a fault in the test suite.

    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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