Patch-ID# 105378-01
Keywords: panic segvn_softunlock 
Synopsis: SunOS 4.1.3_U1: Kernel Fix for panic: segvn_softlock
Date: Oct/20/97

Solaris Release: 1.1.1A

SunOS Release: 4.1.3_U1A

Unbundled Product: 

Unbundled Release: 

Relevant Architectures: sparc
    NOTE: sun4(all)

BugId's fixed with this patch: 4062793

Changes incorporated in this version: 

Patches accumulated and obsoleted by this patch: 

Patches which conflict with this patch: 

Patches required with this patch: 

Obsoleted by: 

Files included with this patch:  sun4/seg_vn.o
                                 sun4c/seg_vn.o
                                 sun4m/seg_vn.o
   
Problem Description: 

4062793  System crashes with "panic on cpu 0: segvn_softunlock"


Patch Installation Instructions: 

1) As root, save a copy of the original file:
   mv /usr/sys/`arch -k`/OBJ/seg_vn.o /usr/sys/`arch -k`/OBJ/seg_vn.o.fcs
   
2) Copy the new file from the patch directory:
   cp seg_vn.o /usr/sys/`arch -k`/OBJ

   chown root.staff /usr/sys/`arch -k`/OBJ/seg_vn.o
   chmod 444 /usr/sys/`arch -k`/OBJ/seg_vn.o
   
3) Build and install a new kernel.  Reboot.
   Please refer to the System and Network Administration
   manual for details on building a custom kernel.
