Patch Name:  PHKL_7341

Patch Description: s700 9.0[357] Fixes panic in unp_externalize()

Creation Date: 96/04/19

Post Date:  96/04/23

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_7341: PANIC

Path Name:  /hp-ux_patches/s700/9.X/PHKL_7341

Symptoms:
        PHKL_7341:
        This patch fixes a bug which can lead to a panic
        in unp_externalize().
        The typical stack trace for this is:
          panic+0x2c ( arguments not stored )
                pc=0x102730, pfmp=0x7ffe6d48, psp=0x7ffe6d68
          unp_externalize+0xa4 ( arguments not stored )
                pc=0x2a3a0, pfmp=0x7ffe6cc8, psp=0x7ffe6ce8
          soreceive+0x7a4 ( arguments not stored )
                pc=0x2ce88, pfmp=0x7ffe6bc8, psp=0x7ffe6be8
          recvit+0x11c ( arguments not stored )
                pc=0x28b78, pfmp=0x7ffe6b48, psp=0x7ffe6b68
          recvmsg+0xf8 ( arguments not stored )
                pc=0x28a20, pfmp=0x7ffe6a48, psp=0x7ffe6a68
          syscall+0x1a4 ( arguments not stored )
                pc=0xa23cc, pfmp=0x7ffe69c8, psp=0x7ffe69e8
          $syscallrtn+0x0 ( arguments not stored )
                pc=0x931b8, pfmp=0xffffffe0, psp=0x0

        This happens when the process has the maximum number of
        file descriptors open and calls recvmsg under certain
        conditions. When allocating file descriptors it can
        cause a panic due to a bug in ufavail().

Defect Description:
        PHKL_7341:
        Fixes panic in unp_externalize()

SR:
        4701239897

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

what(1) Output:
        /etc/conf/libhp-ux.a(kern_dscrp.o):
                kern_dscrp.c  $Revision: 1.54.61.8 $ $Date: 96/04/19
                         14:16:43 $ PATCH_9.03 (PHKL_7341)

sum(1) Output:
        54715 20 /etc/conf/libhp-ux.a(kern_dscrp.o)

Patch Conflicts: None

Patch Dependencies:  None

Hardware Dependencies:  None

Other Dependencies:  None

Supersedes:  None

Equivalent Patches:
        PHKL_4462:
        s800: 9.00

        PHKL_4589:
        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_7341 .
                sh PHKL_7341

        3. Become root and run update:

                /etc/update [-r [kernel_gen_file]] -s \
                        /tmp/PHKL_7341.updt PHKL_7341

        Update moves the original software to
        /system/PHKL_7341/orig.  Keep this file to recover from any
        potential problems.  You should move the .text file to
        /system/PHKL_7341 for future reference.

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

                dd if=PHKL_7341.updt of=/dev/rmt/0m bs=2048

Special Installation Instructions:  None