Home • About Us • A-Z Index • Search * Contact Us • Register • Login • Press • Shop

The Open Brand -- Problem Reporting and Interpretations System

Problem Report 1162 Details

Help Show help | Quick Search | Submit a Test Suite Support Request | Click here to view your privileges

This page provides all information on Problem Report 1162.

Report 1162 Actions

    Problem Report Number 1162
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Rejected (REJ)
    Problem Resolution ID REJ.X.0364
    Raised 1970-01-01 08:00
    Updated 2003-03-13 08:00
    Published null
    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 CAPIbase/fkillpg 5
    Problem Summary PG4U.00104 This request claims that this test may fail because of an insuffient hardwired delay loop.
    Problem Text
    This assertion is failing (very rarely) on our system when we have
    a very heavy workload running, and the failure is timing related,

    Increasing the value of VSU_MACHINE_PERFORMANCE does not resolve
    the timing related failures. The problem lies is in the
    way killpg5_exec.c is coded, where the duration of time that
    the killpg5_exec code is being executed is determined by
    a while loop which is executed for a hardcoded duration:
    Here is a snippet of the offending code:


    t = (time((time_t *)NULL) + 4*10);

    while (time((time_t *)NULL) < t)
    ;

    If the killpg5_exec code finishes execution before the killpg()
    call is made, the killpg() call fails with errno ESRCH
    Test Output
    TEST PURPOSE #5
    EPERM in errno and return -1 on a call to int
    killpg(pid_t pgrp, int sig) when the process does not
    have permission to send sig to any receiving process.
    PREP: Exec a setuid program which changes its
    process group
    PREP: Read value for VSU_NOT_INUSE_UID1 configuration
    parameter
    PREP: Read value for VSU_NOT_INUSE_GID1 configuration
    parameter
    TEST: killpg() returns -1 when the process does not
    have permissions to send a signal to a
    process group
    TEST: killpg() sets errno to EPERM when the process
    does not have permissions to send a signal to
    a process group
    ERROR: killpg failed, errno = 143(ESRCH - No such process)
    5 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.

    This test runs a first process that spwans a second process
    then sleeps 5 seconds.

    While the first process is sleeping the second process executes a
    few function calls then enters a loop for 40 seconds.

    During that 40 seconds the first process makes a few function calls
    then calls killpg(). It is the error returned from the killlpg()
    call that the test checks and fails on this implementation.

    We believe that on any resonable system the first program should be
    able to do its work in 2 or 3 seconds at most. It does this in less
    than 1 second on the slowest test platform we have here. The 40
    second hardwired delay here sems more than sufficient, even after
    the 5 second sleep in the first program is taken into account.

    We would also point out that the error is one that one might be
    possible if the test were failing properly.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution No Resolution Given
    Review Conclusion
    We agree this should be refused. If the test rails only rarely then it
    is not procedurally correct to grant a Test Suite Deficiency which may
    be referenced by default.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Rejected (REJ)
    Review Conclusion
    This request is refused.

    Problem Reporting System Options:

     

    Back   

Contact the Certification Authority