Patch Name: PHKL_0898 Patch Description: Fix a kernel panic. dupreg new region > old region Problem this patch addresses: If a program is NFS mounted from a remote machine, and the executable is overwritten on the remote machine while it is running locally, and the executable is started again (locally) while it is being overwritten, then it is possible for the kernel to panic with the message "panic: dupreg: new region > old region" This patch fixes this kernel panic. The kernel will kills programs that are modfied while they are executing. The process being started will also be killed if the executable is changed. Path Name: /hp-ux_patches/s700/8.X/PHKL_0898 Effective Date: 920306 Patch Files: /system/PHKL_0898/new/vm_fault.o /system/PHKL_0898/new/vm_region.o SR/APR#: None. "what" string/timestamp: vm_fault.o: PATCH_8.05: vm_fault.o 1.9.43.7 92/03/06 vm_region.o: PATCH_8.05: vm_region.o 1.10.43.3 92/03/06 "sum" output: 64627 14 vm_fault.o 45780 14 vm_region.o Dependencies: Applies only to S700 8.05 kernels. Supersedes: None. Patch Package Size: 41K 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. Note: Please back up your system before you patch. --------------------------------------------------------------------------- After getting the patch onto your machine, unshar the patch (sh PHKL_0898). To install this patch do the following: 1) Run the update program (Note: you must be logged in as root to update a system). 2) Once in the update "Main Menu" move the highlighted line to "Change Source or Destination ->" and press "Return" or "Select Item". 3) Make sure the highlighted item in the "Change Source or Destination" window is "From Tape Device to Local System ...", then press "Return" or "Select Item". 4) You should now be in the "From Tape Device to Local System" window. Change the "Source: /dev/rmt/0m" to "Source: /tmp/PHKL_0898.updt" (this assumes that you are in the /tmp directory where PHKL_0898.updt has been placed). Note: You must enter the complete path name. 5) Press "Done". 6) From here on follow the standard directions for update. The customized script that update runs will move the original software to /system/PHKL_0898/orig. HP recommends keeping this software there in order to recover from any potential problems. It is also recommended that you move the PHKL_0898.text file to /system/PHKL_0898 to be retained for future reference. If you wish to put this patch on a magnetic tape and update from the tape drive, dd a copy of the patch to the tape drive. As an example the following will create a copy of the patch that update can read: dd if=PHKL_0898.updt of=/dev/rmt/0m bs=2048