Patch Name:  PHNE_9059

Patch Description: s700 10.20 STREAMS kernel cumulative patch

Creation Date: 96/10/03

Post Date:  96/12/06

Hardware Platforms - OS Releases:
        s700: 10.20

Products: N/A

Filesets:
        Streams.STREAMS-KRN

Automatic Reboot?: Yes

Status: General Superseded

Critical:
        Yes
        PHNE_9059: PANIC
        PHNE_8492: PANIC

Path Name:  /hp-ux_patches/s700/10.X/PHNE_9059

Symptoms:
        PHNE_9059:
          When using high-speed networking it is possible to
          have the streams stack call back into itself multiple
          times.  If the drivers and modules in use have a deep
          execution stack then the kernel stack size may be
          exceeded resulting in a panic.

        PHNE_8492:
          In an environment where multiple streams are being
          built and torn down rapidly a panic can occur in the
          STREAMS code.

Defect Description:
        PHNE_9059:
          This problem was found with drivers and modules that
          employ a very deep execution stack

        PHNE_8492:
          In a situation where a STREAM is being closed, there
          is a window where other STREAM activity taking place
          on behalf of a different user process can cause the
          machine to panic.

SR:
        5003328617

Patch Files:
        /usr/conf/lib/libstream.a

what(1) Output:
        /usr/conf/lib/libstream.a:
                STREAMS: Revision: A.10.20 PHNE_9059 (700) PHNE_9060
                         (800) 96/09/26

cksum(1) Output:
        2426097791 401828 /usr/conf/lib/libstream.a

Patch Conflicts: None

Patch Dependencies:  None

Hardware Dependencies:  None

Other Dependencies:  None

Supersedes:
        PHNE_8492

Equivalent Patches: None

Patch Package Size:  450 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. Login as root.

        3. Copy the patch to the /tmp directory.

        4. Move to the /tmp directory and unshar the patch:

                cd /tmp
                sh PHNE_9059

        5a. For a standalone system, run swinstall to install the
            patch:

                swinstall -x autoreboot=true -x match_target=true \
                        -s /tmp/PHNE_9059.depot

        5b. For a homogeneous NFS Diskless cluster run swcluster on the
            server to install the patch on the server and the clients:

                swcluster -i -b

            This will invoke swcluster in the interactive mode and
            force all clients to be shut down.

            WARNING: All cluster clients must be shut down prior to the
                     patch installation.  Installing the patch while the
                     clients are booted is unsupported and can lead to
                     serious problems.

            The swcluster command will invoke an swinstall session in which
            you must specify:

                alternate root path  -  default is /export/shared_root/OS_700
                source depot path    -  /tmp/PHNE_9059.depot

            To complete the installation, select the patch by choosing
            "Actions -> Match What Target Has" and then "Actions -> Install"
            from the Menubar.

        5c. For a heterogeneous NFS Diskless cluster:

                - run swinstall on the server as in step 5a to install
                  the patch on the cluster server.

                - run swcluster on the server as in step 5b to install
                  the patch on the cluster clients.

        By default swinstall will archive the original software in
        /var/adm/sw/patch/PHNE_9059.  If you do not wish to retain a
        copy of the original software, you can create an empty file
        named /var/adm/sw/patch/PATCH_NOSAVE.

        Warning: If this file exists when a patch is installed, the
                 patch cannot be deinstalled.  Please be careful
                 when using this feature.

        It is recommended that you move the PHNE_9059.text file to
        /var/adm/sw/patch for future reference.

        To put this patch on a magnetic tape and install from the
        tape drive, use the command:

                dd if=/tmp/PHNE_9059.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:  None