Patch Name: PHKL_28313

Patch Description: s700_800 11.22 INIT panic - spinlock held

Creation Date: 02/12/16

Post Date:  03/01/10

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_28313: PANIC

Category Tags:
	defect_repair general_release critical panic

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_28313

Symptoms:
	PHKL_28313:
	( SR:8606272246 CR:JAGae36386 )
	Possibility of system panicing when the INIT (TOC) button is
	 pressed.

	Panic would look like this:

	panic: wait_for_lock: Already owns lock: FW PSM
	                      firmware_spinlock
	Stack Trace:
	  IP                  Function Name
	  0xe000000000264a40  wait_for_lock+0x260
	  0xe00000000075fd10  spinlock+0x90
	  0xe00000000072a390  sal_proc_real+0xd0
	  0xe0000000002ae5b0  mca_log_error+0x190
	  0xe000000000734c70  INIT_hndlr_monarch+0x130
	  0xe00000000130e700  crash_copy_mss
	End of Stack Trace

Defect Description:
	PHKL_28313:
	( SR:8606272246 CR:JAGae36386 )
	When the TOC/INIT button is pressed while firmware is
	holding a fw spinlock then the system will panic.  This
	prevents the correct information from being stored in the
	crash dump.

	Resolution:
	Add code to the INIT handler and panic path to check for a
	firmware spinlock.  If this lock is held during a panic or
	an INIT/TOC the new code will unlock it.

Enhancement:
	No

SR:
	8606272246

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

what(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.22,fa=HP-UX_B.11.22_IA,v=HP:
	/usr/conf/lib/libshutdown-pdk.a(os_init.o):
		os_init.c $Date: 2002/11/26 10:12:32 $Revision: r11.
			22/1 PATCH_11.22 (PHKL_28313)
	/usr/conf/lib/libshutdown-pdk.a(panic.o):
		panic.c $Date: 2002/11/26 10:12:32 $Revision: r11.22
			/1 PATCH_11.22 (PHKL_28313)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.22,fa=HP-UX_B.11.22_IA,v=HP:
	1537716956 13560 /usr/conf/lib/libshutdown-pdk.a(os_init.o)
	2059613680 31384 /usr/conf/lib/libshutdown-pdk.a(panic.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies:
	ia64

Other Dependencies: None

Supersedes: None

Equivalent Patches: None

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_28313

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_28313.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_28313.  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_28313.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_28313.depot

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

		dd if=/tmp/PHKL_28313.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None