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Conference 49.910::kav30

Title:VAX on VMEbus: KAV30
Notice:Could have been as fast as 68K but its a VAX!
Moderator:CSSVMS::KAV30_SUPP
Created:Thu Apr 18 1991
Last Modified:Fri Aug 02 1996
Last Successful Update:Fri Jun 06 1997
Number of topics:159
Total number of notes:645

140.0. "KER$DELETE hang" by TRN01::FORMIA () Thu Oct 06 1994 13:48

    Hi,
    I have a question related to ELN 4.4 :
    
     Using KER$DELETE in case of object already deleted,
     the system hangs (all our application jobs).
    
    Why this happens ?.
    
     Marino Formia
T.RTitleUserPersonal
Name		DateLines
140.1not reproduced in V4.5SWTHOM::VOUTERSFri Oct 07 1994 17:2415
    Hello Marino,
    
    I made a quick check under VAXELN V4.5. In my source, there are 2
    consecutive KER$DELETE (Message_object). The second one returned as
    expected the following error message:
    %KERNEL-F-BAD_VALUE, bad parameter value.
    I looked in the V4.5 sources and the files containing the code which
    returns such an error are dated from VAXELN V4.3 (no changes since in
    DELETE.MAR and KERNELSUB.MAR). Can you give more details or halt the
    VAX and see the Program Counter and PSL. Use EBUILD/MAP/FULL/INTERN
    to locate the correspondance between P0 and S0 address of jobs.
    Of course if the hang (read loop) is not in the kernel.
    
    Regards,
    Philippe
140.2debug/remote session log fileSWTHOM::VOUTERSFri Oct 07 1994 17:4623
type 14:22
!module ALLOC
!    14: BEGIN
!    15: CREATE_MESSAGE (Mess,data_ptr) ;
!    16: NEW (test_ptr) ;
!    17: DELETE (Mess) ;
!    18: DELETE (Mess) ;
!    19: DISPOSE (test_ptr) ;
!    20: CREATE_MESSAGE (Mess,data_ptr) ;
!    21: END.
!    22: END;
Step
!stepped to ALLOC\%LINE 16
!    16: NEW (test_ptr) ;
Step
!stepped to ALLOC\%LINE 17
!    17: DELETE (Mess) ;
Step
!stepped to ALLOC\%LINE 18
!    18: DELETE (Mess) ;
Step
!%KERNEL-F-BAD_VALUE, bad parameter value
exit