Patch Name:  PHKL_6591

Patch Description: s700 9.09 prevent kernel messages from corrupting display

Creation Date: 96/01/04

Post Date:  96/01/11

Hardware Platforms - OS Releases:
        s700: 9.09

Products: N/A

Filesets:
        KERN-BLD

Automatic Reboot?: Yes

Status: General Release

Critical: No

Path Name:  /hp-ux_patches/s700/9.X/PHKL_6591

Symptoms:
        PHKL_6591:
        Kernel uprintf messages such as 'nfs server not responding'
        can corrupt graphics displays.

        PHKL_5191:
        System unavailable due to malicious user activity

Defect Description:
        PHKL_6591:
        Users running dedicated graphics applications may prefer
        not to have their displays corrupted by kernel uprintf
        messages such as 'nfs server not responding.'  This patch
        provides a mechanism to selectively divert these messages
        to the kernel message buffers that dmesg(1M) reads.

        The system's behavior can be modified by changing the
        value of the new kernel variable 'no_console_uprintf'
        with adb as follows:

        # echo 'no_console_uprintf?W XXX' | adb -w /hp-ux

        where XXX is one of the following values:

        Value           Behavior
        ------------------------------------------------------------
        0 (default)     same as without the patch
        1               uprintfs to the system console are diverted
        2               uprintfs to all tty devices are diverted
                        (possibly desired if you have multiple
                         graphics displays on your system)

        Changes take effect on the next system reboot.

        PHKL_5191:
        System unavailable due to malicious user activity

SR:
        5003297515

Patch Files:  
        /etc/conf/libhp-ux.a(locore.o)
        /etc/conf/libhp-ux.a(machdep.o)
        /etc/conf/libhp-ux.a(subr_prf.o)
        /etc/conf/libhp-ux.a(vm_machdep.o)

what(1) Output:
        /etc/conf/libhp-ux.a(locore.o):
                locore.s  $Revision: $ $Date: $ PATCH_9.09 (PHKL_519
                        1)
        /etc/conf/libhp-ux.a(machdep.o):
                machdep.c     $Revision: $ $Date: $ PATCH_9.09 (PHKL
                        _5191))
        /etc/conf/libhp-ux.a(subr_prf.o):
                subr_prf.c  $Revision: 1.61.87.5 $ $Date: 96/01/04 1
                        3:38:49 $ PATCH_9.09 (PHKL_6591)
        /etc/conf/libhp-ux.a(vm_machdep.o):
                vm_machdep.c  $Revision:  $ $Date:  $ PATCH_9.09 (PH
                        KL_5191)

sum(1) Output:
        52165 107 /etc/conf/libhp-ux.a(locore.o)
        2341 56 /etc/conf/libhp-ux.a(machdep.o)
        57978 27 /etc/conf/libhp-ux.a(subr_prf.o)
        16929 101 /etc/conf/libhp-ux.a(vm_machdep.o)

Patch Conflicts: None

Patch Dependencies:  None

Hardware Dependencies:  None

Other Dependencies:  None

Supersedes:  
        PHKL_5191

Equivalent Patches: None

Patch Package Size:  200 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_6591 .
                sh PHKL_6591

        3. Become root and run update:

                /etc/update [-r [kernel_gen_file]] -s \
                        /tmp/PHKL_6591.updt PHKL_6591

        Update moves the original software to
        /system/PHKL_6591/orig.  Keep this file to recover from any
        potential problems.  You should move the .text file to
        /system/PHKL_6591 for future reference.

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

                dd if=PHKL_6591.updt of=/dev/rmt/0m bs=2048

Special Installation Instructions:  None