Patch Name:  PHKL_9827

Patch Description: s700 9.0X Infinite sleep/wakeup loop with semop(2)

Creation Date: 97/01/15

Post Date:  97/01/17

Hardware Platforms - OS Releases:
        s700: 9.03 9.05 9.07

Products: N/A

Filesets:
        KERN-BLD

Automatic Reboot?: Yes

Status: General Release

Critical:
        Yes
        PHKL_9827: HANG

Path Name:  /hp-ux_patches/s700/9.X/PHKL_9827

Symptoms:
        PHKL_9827:
        Poor system performance and possibly system hang when
        calling semop() with marginal arguments.

Defect Description:
        PHKL_9827:
        Marginal semop() calls could cause the system to run into
        an infinite sleep/wakeup loop and this would cause the
        system to suffer from poor performance and to possibly hang.

SR:
        4701344648

Patch Files:  
        /etc/conf/libhp-ux.a(sysV_sem.o)

what(1) Output:
        /etc/conf/libhp-ux.a(sysV_sem.o):
                sysV_sem.c  $Date: 97/01/15 09:57:48 $ $Revision: 1.
                        25.61.5 $ PATCH_9.03 (PHKL_9827)

sum(1) Output:
        11829 19 /etc/conf/libhp-ux.a(sysV_sem.o)

Patch Conflicts: None

Patch Dependencies:  None

Hardware Dependencies:  None

Other Dependencies:  None

Supersedes:  None

Equivalent Patches:
        PHKL_9744:
        s700: 10.01

        PHKL_9745:
        s800: 10.01

        PHKL_9746:
        s700: 10.10

        PHKL_9747:
        s800: 10.10

        PHKL_9748:
        s700: 10.20

        PHKL_9749:
        s800: 10.20

        PHKL_9828:
        s800: 9.04

Patch Package Size:  60 Kbytes

Installation Instructions:  
        Please review all instructions and the Hewlett-Packard
        SupportLine User Guide or your Hewlett-Packard support terms
        and conditions for precautions, scope of license,
        restrictions, and, limitation of liability and warranties,
        before installing this patch.
        ------------------------------------------------------------
        1. Back up your system before installing a patch.

        2. Copy the patch to your /tmp directory and unshar it:

                cd /tmp
                cp patch_source/PHKL_9827 .
                sh PHKL_9827

        3. Become root and run update:

                /etc/update [-r [kernel_gen_file]] -s \
                        /tmp/PHKL_9827.updt PHKL_9827

        Update moves the original software to
        /system/PHKL_9827/orig.  Keep this file to recover from any
        potential problems.  You should move the .text file to
        /system/PHKL_9827 for future reference.

        To put this patch on a magnetic tape and update from the
        tape drive, use dd:

                dd if=PHKL_9827.updt of=/dev/rmt/0m bs=2048

Special Installation Instructions:  None