Patch Name: PHKL_20873

Patch Description: s700_800 11.00 patch for kernel stack unwinding

Creation Date: 00/02/23

Post Date:  00/03/07

Hardware Platforms - OS Releases:
	s700: 11.00
	s800: 11.00

Products: N/A

Filesets:
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical: No

Category Tags:
	defect_repair general_release

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_20873

Symptoms:
	PHKL_20873:
	( SR: 8606113895 DTS: JAGac12415 )
	Kernel debuggers (eg. q4) would report a partial kernel
	stack trace for TOC crash events while in
	panic_save_register_state:

	  q4> trace event 2
	  stack trace for event 2
	  crash event was a TOC
	  panic_save_register_state+0x144

Defect Description:
	PHKL_20873:
	( SR: 8606113895 DTS: JAGac12415 )
	The unwind descriptor for panic_save_state_register was
	not properly set, thus breaking kernel stack unwinding.
	The "save_rp" flag was set although the routine was not
	actually saving RP.

	Resolution:
	The "save_rp" flag was removed from the unwind descriptor
	of the panic_save_state_register routine.

SR:
	8606113895

Patch Files:
	
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
	/usr/conf/lib/libhp-ux.a(asm_crash.o)

	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libhp-ux.a(asm_crash.o)

what(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
	/usr/conf/lib/libhp-ux.a(asm_crash.o):
		asm_crash.s $Date: 2000/01/11 12:40:42 $Revision: r1
			1ros/4 PATCH_11.00 (PHKL_20873)

	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libhp-ux.a(asm_crash.o):
		asm_crash.s $Date: 2000/01/11 12:40:42 $Revision: r1
			1ros/4 PATCH_11.00 (PHKL_20873)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
	3134111589 11988 /usr/conf/lib/libhp-ux.a(asm_crash.o)

	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	905688992 44104 /usr/conf/lib/libhp-ux.a(asm_crash.o)

Patch Conflicts: None

Patch Dependencies:
	s700: 11.00: PHKL_18543
	s800: 11.00: PHKL_18543

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches: None

Patch Package Size: 90 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. Login as root.

	3. Copy the patch to the /tmp directory.

	4. Move to the /tmp directory and unshar the patch:

		cd /tmp
		sh PHKL_20873

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_20873.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_20873.  If you do not wish to retain a
	copy of the original software, use the patch_save_files option:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -x patch_save_files=false -s /tmp/PHKL_20873.depot

	WARNING: If patch_save_files is false when a patch is installed,
		 the patch cannot be deinstalled.  Please be careful
		 when using this feature.

	For future reference, the contents of the PHKL_20873.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_20873.depot

	To put this patch on a magnetic tape and install from the
	tape drive, use the command:

		dd if=/tmp/PHKL_20873.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:
	This patch depends on base patch PHKL_18543.
	For successful installation please insure that PHKL_18543
	is already installed, or that PHKL_18543 is included
	in the same depot with this patch and PHKL_18543
	is selected for installation.