Patch-ID# 100076-01
Keywords: panic segu_softunlock missing page watchdog reset
Synopsis: Pages stolen after Copy On Write
Date:

SunOS release: 4.1

Topic: kernel panic missing page

BugID's fixed with this patch: 1038713

Architectures for which this patch is available: sun3 sun4 sun4c

Problem description:

	The system crashes with "segu_softunlock: missing page"
	as a result of a child process locking shared pages,
	also sometimes the system stops with "watchdog reset".

Fix description:

	The fix includes patched version of:

                vm_anon.o

Install instructions:

   After extracting fix tape contents into /tmp, as root install
   the appopriate sun3 or sun4 patches as follows:

        chmod 444 vnode.h 
        cd /sys/{sun3,sun4}/OBJ
        mv vm_anon.o vm_anon.o_orig
        cp /tmp/vm_anon.o vm_anon.o
        chmod 444 vm_anon.o
 
Then a new kernel will need to be made