Patch Name: PHKL_29994

Patch Description: s700_800 11.23 install kernel panic with ram fs problem

Creation Date: 03/11/14

Post Date: 03/11/24

Hardware Platforms - OS Releases:
	s700: 11.23
	s800: 11.23

Products: N/A

Filesets:
	OS-Core.CORE2-KRN,fr=B.11.23,fa=HP-UX_B.11.23_IA,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_29994: PANIC

Category Tags:
	defect_repair general_release critical panic

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_29994

Symptoms:
	PHKL_29994:
	( SR:8606325170 CR:JAGae87460 )
	install kernel panic with the following message

	System Panic:

	panic: cannot allocate memory for RAM disk, possible bad
	memory Stack Trace: IP Function Name 0xe000000000952e60
	AddressSpaceScan+0x800 0xe0000000009526c0
	AddressSpaceScan+0x60 0xe0000000010050b0 DoCalllist+0x3a0
	End of Stack Trace

Defect Description:
	PHKL_29994:
	( SR:8606325170 CR:JAGae87460 )
	The pdt_read function inadvertently deallocates the memory
	with transient SBE (Single Bit Error).  This memory is
	marked as usable by firmware and is actually used by the
	boot loader.  In this situation, this memory with the
	transient SBE happened to be part of the RAM FS that is
	preallocated by the boot loader.  This causes the install
	kernel to panic.  This could also causes panic in non-
	install kernel, if this memory with the transient SBE
	happens to be part of the kernel stack, data, etc.

	Resolution:
	Change the pdt_read function to ignore the transient SBE
	reported by firmware so that this memory will not be
	deallocated.

Enhancement:
	No

SR:
	8606325170

Patch Files:
	
	OS-Core.CORE2-KRN,fr=B.11.23,fa=HP-UX_B.11.23_IA,v=HP:
	/usr/conf/lib/libio-pdk.a(foundation_psm.o)

what(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.23,fa=HP-UX_B.11.23_IA,v=HP:
	/usr/conf/lib/libio-pdk.a(foundation_psm.o):
		foundation_psm.c $Date: 2003/11/04 13:06:59 $Revisio
			n: r11.23/1 PATCH_11.23 (PHKL_29994)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.23,fa=HP-UX_B.11.23_IA,v=HP:
	1905109882 49728 /usr/conf/lib/libio-pdk.a(foundation_psm.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

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_29994

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_29994.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_29994.  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_29994.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_29994.depot

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

		dd if=/tmp/PHKL_29994.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None