Patch Name: PHKL_29890

Patch Description: s700_800 11.11 vPar enablement,DLKM load panic

Creation Date: 03/10/10

Post Date: 03/10/21

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_29890: PANIC

Category Tags:
	defect_repair enhancement general_release critical panic

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_29890

Symptoms:
	PHKL_29890:
	( SR:8606327556 CR:JAGae89817 )
	When loading DLKM software modules on large memory
	systems (>8GB) running 64-bit kernels, the kernel
	can panic with the following panic string:
	kalloc: out of kernel virtual address space

	Stack trace:
	panic+0x6c
	kalloc_4K+0x238
	kalloc_from_superpage+0x408
	kalloc+0x14
	alloc_mem+0x44
	get_kmem+0x8c
	kmem_arena_xlarge_alloc+0x74
	kmem_arena_varalloc+0x144
	mod_obj_getprog+0x2c4
	mod_obj_load+0x1b8
	mod_load_helper+0x50
	modld+0x200
	modload+0x12c
	syscall+0x750
	syscallinit+0x554

	PHKL_24563:
	( SR:8606204638 CR:JAGad73820 )
	This patch is a member of a set of patches needed to enable
	the HP-UX Virtual Partitions product. When the HP-UX Virtual
	Partitions product (VPARSBASE or T1335AA) is installed, it
	will install the full set of required patches for that
	product, including this patch.

	If the HP-UX Virtual Partitions product is not installed,
	this change will have no impact on your system.

Defect Description:
	PHKL_29890:
	( SR:8606327556 CR:JAGae89817 )
	This happens on large memory systems due to
	unavailability of 32-bit kernel virtual addresses.
	DLKM needs 32-bit kernel virtual addresses to load
	the module, but these addresses are already
	taken by kernel data structures.

	Resolution:
	Now 32-bit kernel virtual addresses are left
	unallocated for later use by other modules such
	as DLKMs.

	PHKL_24563:
	( SR:8606204638 CR:JAGad73820 )
	This patch contains minor enhancements required to support
	the HP-UX Virtual Partitions product.

	Resolution:
	Enhancements added to support relocated kernels.

Enhancement:
	No (superseded patches contained enhancements)
	PHKL_29890:
		Enhancements were delivered in a patch this one has
		superseded.  Please review the Defect Description
		text for more information.

SR:
	8606204638 8606327556

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(vm_alloc.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libvm-pdk.a(vm_alloc.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(vm_alloc.o):
		vm_alloc.c $Date: 2003/10/09 00:41:00 $Revision: r11
			.11/4 PATCH_11.11 (PHKL_29890)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libvm-pdk.a(vm_alloc.o):
		vm_alloc.c $Date: 2003/10/09 00:41:00 $Revision: r11
			.11/4 PATCH_11.11 (PHKL_29890)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	3347602717 8872 /usr/conf/lib/libvm-pdk.a(vm_alloc.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	2669606966 32224 /usr/conf/lib/libvm-pdk.a(vm_alloc.o)

Patch Conflicts: None

Patch Dependencies:
	s700: 11.11: PHKL_29889
	s800: 11.11: PHKL_29889

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHKL_24563 

Equivalent Patches: None

Patch Package Size: 40 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_29890

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_29890.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_29890.  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_29890.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_29890.depot

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

		dd if=/tmp/PHKL_29890.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None