Patch Name: PHKL_25375

Patch Description: s700_800 11.11 VM stale icache

Creation Date: 01/09/27

Post Date:  01/10/02

Hardware Platforms - OS Releases:
	s700: 11.11
	s800: 11.11

Products: N/A

Filesets:
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_25375: ABORT

Category Tags:
	defect_repair general_release critical halts_system

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_25375

Symptoms:
	PHKL_25375:
	( SR:8606208152 CR:JAGad77330 )
	During normal operation random process core dumps may occur.

Defect Description:
	PHKL_25375:
	( SR:8606208152 CR:JAGad77330 )
	The VM subsystem was not correctly handling self-modifying
	code pages that were not initially mapped with execute
	access.  There was a possibility that execute access could
	be removed, leaving stale data in the instruction cache.
	When the page was subsequently reused by another process,
	it would fault on the stale instruction cache data.

	Resolution:
	If a page has execute access, retain the execute access when
	adding a new translation.  This ensures the data is flushed
	from the instruction cache upon page deallocation.

SR:
	8606208152

Patch Files:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	/usr/conf/lib/libvm-pdk.a(hdl_trans.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libvm-pdk.a(hdl_trans.o)

what(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	/usr/conf/lib/libvm-pdk.a(hdl_trans.o):
		hdl_trans.c $Date: 2001/09/25 07:53:51 $Revision: r1
			1.11/1 PATCH_11.11 (PHKL_25375)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libvm-pdk.a(hdl_trans.o):
		hdl_trans.c $Date: 2001/09/25 07:53:51 $Revision: r1
			1.11/1 PATCH_11.11 (PHKL_25375)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	2777256603 15316 /usr/conf/lib/libvm-pdk.a(hdl_trans.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	758092797 34248 /usr/conf/lib/libvm-pdk.a(hdl_trans.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_24612:
	s700: 11.00
	s800: 11.00

Patch Package Size: 70 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_25375

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_25375.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_25375.  If you do not wish to retain a
	copy of the original software, include the patch_save_files
	option in the swinstall command above:

		-x patch_save_files=false

	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_25375.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_25375.depot

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

		dd if=/tmp/PHKL_25375.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None