Patch Name: PHKL_30350

Patch Description: s700_800 11.22 I/O card initialization allocation failures

Creation Date: 04/01/21

Post Date: 04/03/03

Hardware Platforms - OS Releases:
	s700: 11.22
	s800: 11.22

Products: N/A

Filesets:
	OS-Core.CORE2-KRN,fr=B.11.22,fa=HP-UX_B.11.22_IA,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_30350: PANIC HANG

Category Tags:
	defect_repair general_release critical panic halts_system

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_30350

Symptoms:
	PHKL_30350:
	( SR:8606336294 CR:JAGae97347 )
	System panic: all VFS_MOUTROOTs failed: NEED DRIVERS ?????
	on a system where the boot option menu has only VGA
	selected and the graphics adapter is not able to
	initialize.

	Stack Trace:
	  IP                  Function Name
	  0xe000000000802b90  vfs_mountroot+0x1b0
	  0xe000000000856920  im_preinitrc+0x300
	  0xe0000000009e6a70  DoCalllist+0x230
	End of Stack Trace

	Systems may also hang just after the "Booting kernel"
	message.

	Systems which neither panic nor hang may fail to
	initialize I/O devices on boot. Later ioscans may
	successfully claim these devices.

Defect Description:
	PHKL_30350:
	( SR:8606336294 CR:JAGae97347 )
	Systems with many I/O cards may exhaust kernel memory
	structures during boot-time ioscan. The operation to
	allocate more kernel memory for those structures fails
	even when sufficient kernel memory is available,
	and the system may fail to boot depending if the card is
	required.

	If the card is not required, later allocations from
	later ioscans may succeed and allow the card to be claimed.

	Resolution:
	Modify the allocation of kernel memory so that it will
	succeed when sufficient system memory is available. This
	greatly reduces the possibility of an I/O card
	initialization failure due to failed kernel memory
	allocation. If kernel memory is exhausted due to improper
	configuration or excessive requirements prior to I/O card
	initialization, the initialization will continue to fail
	after this change is installed.

Enhancement:
	No

SR:
	8606336294

Patch Files:
	
	OS-Core.CORE2-KRN,fr=B.11.22,fa=HP-UX_B.11.22_IA,v=HP:
	/usr/conf/lib/libio-pdk.a(io_mem.o)

what(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.22,fa=HP-UX_B.11.22_IA,v=HP:
	/usr/conf/lib/libio-pdk.a(io_mem.o):
		io_mem.c $Date: 2004/01/21 10:55:25 $Revision: r11.2
			2/1 PATCH_11.22 (PHKL_30350)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.22,fa=HP-UX_B.11.22_IA,v=HP:
	428660162 35648 /usr/conf/lib/libio-pdk.a(io_mem.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_30351:
	s700: 11.23
	s800: 11.23

Patch Package Size: 30 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_30350

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_30350.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_30350.  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_30350.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_30350.depot

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

		dd if=/tmp/PHKL_30350.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None