Patch Name: PHKL_24266

Patch Description: s700_800 11.00 DNLC panic and Enable IDS/9000 support

Creation Date: 01/06/12

Post Date:  01/07/10

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:
	Yes
	PHKL_24266: PANIC

Category Tags:
	defect_repair enhancement general_release critical panic

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_24266

Symptoms:
	PHKL_24266:
	( SR: 8606193785 CR: JAGad62995 )
	A Data Page Fault panic can occur if a small DNLC is
	configured.  This panic is unlikely to occur if a large
	DNLC has been configured.

	The stack trace might look like:
	panic+0x14
	report_trap_or_int_and_panic+0x84
	trap+0xd9c
	nokgdb+0x8
	remque+0x8
	dnlc_enter+0x2c8
	vx_lookup+0x2c0
	locallookuppn+0xd4
	lookuppn+0xf8
	lookupname+0x40
	stat1+0x38
	lstat+0x20
	syscall+0x394
	$syscallrtn+0x0

	PHKL_21362:
	( SR: 8606132625 CR: JAGad01774 )
	The Praesidium IDS/9000 product requires this patch in order
	to run.  This patch has no impact on systems without the
	Praesidium IDS/9000 product installed and enabled.

Defect Description:
	PHKL_24266:
	( SR: 8606193785 CR: JAGad62995 )
	A Race condition between two threads accessing the same LRU
	chain of the DNLC simultaneously can cause a Data Page
	Fault. A LRU chain should never be empty; however, with a
	small DNLC (one entry per LRU chain) a race condition can
	occur where one thread can catch the LRU in a transient
	empty state while another thread has temporarily removed
	the single entry.

	Resolution:
	The thread which finds the LRU chain empty returns without
	performing any operations and allows the other thread to
	operate on the sole entry of this LRU chain.

	PHKL_21362:
	( SR: 8606132625 CR: JAGad01774 )
	This patch is one of 16 patches (PHKL_21348-PHKL_21363)
	required by the Praesidium IDS/9000 product.  These patches
	enable the collection and tracking of information from
	various system calls.  Unless all of the enabling patches
	(or their successors) and the product are installed, and the
	product is enabled, this patch has no impact on the system.

	Resolution:
	This patch provides IDS/9000 with access to the filename
	cache.

SR:
	8606132625 8606193785

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(vfs_dnlc.o)

	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libhp-ux.a(vfs_dnlc.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(vfs_dnlc.o):
		vfs_dnlc.c $Date: 2001/05/29 07:30:07 $Revision: r11
			ros/7 PATCH_11.00 (PHKL_24266)

	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libhp-ux.a(vfs_dnlc.o):
		vfs_dnlc.c $Date: 2001/05/29 07:30:07 $Revision: r11
			ros/7 PATCH_11.00 (PHKL_24266)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_32,v=HP:
	2315740826 11740 /usr/conf/lib/libhp-ux.a(vfs_dnlc.o)

	OS-Core.CORE2-KRN,fr=B.11.00,fa=HP-UX_B.11.00_64,v=HP:
	2445713391 30160 /usr/conf/lib/libhp-ux.a(vfs_dnlc.o)

Patch Conflicts: None

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

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHKL_21362 

Equivalent Patches:
	PHKL_24343:
	s700: 11.11
	s800: 11.11

Patch Package Size: 80 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_24266

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_24266.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_24266.  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_24266.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_24266.depot

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

		dd if=/tmp/PHKL_24266.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.