Patch Name: PHKL_23866

Patch Description: s700_800 11.10 Pregion lookup failure

Creation Date: 01/04/11

Post Date:  01/04/12

Hardware Platforms - OS Releases:
	s700: 11.10
	s800: 11.10

Products: N/A

Filesets:
	OS-Core.CORE2-KRN,fr=B.11.10,fa=HP-UX_B.11.10_32,v=HP
	OS-Core.CORE2-KRN,fr=B.11.10,fa=HP-UX_B.11.10_64,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_23866: PANIC

Category Tags:
	defect_repair general_release critical panic

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_23866

Symptoms:
	PHKL_23866:
	( SR:8606179743 CR:JAGad48965 )
	A system may experience a data page fault panic with the
	following stack trace:
	  panic+0x14
	  report_trap_or_int_and_panic+0x8c
	  trap+0xa80
	  nokgdb+0x8
	  lbcopy_pcxu_method+0x8
	  privlbcopy+0x1c
	  thread_pcb_reinit+0x54
	  thread_alloc+0x64
	  thread_create+0x410
	  kthread_daemon_create+0x30
	  vx_startdaemon+0x38
	  vx_workthread_create+0x20
	  vx_workthread_set+0xb4
	  vx_sched_thread+0x544
	  vx_postinit+0x16c
	  vx_sync+0x24
	  update+0x78
	  sync+0x60
	  syscall+0x53c
	  $syscallrtn+0x0

Defect Description:
	PHKL_23866:
	( SR:8606179743 CR:JAGad48965 )
	A pregion lookup is done based on the thread id.  Thread
	id's are cached, so on systems with many threads configured
	and running, the thread id may be stale, i.e. reused by
	another thread.  In this case, the wrong pregion is
	returned.

	Resolution:
	Use the thread pregion pointer to access the pregion
	instead of the thread id.

SR:
	8606179743

Patch Files:
	
	OS-Core.CORE2-KRN,fr=B.11.10,fa=HP-UX_B.11.10_32,v=HP:
	/usr/conf/lib/libvm.a(vm_vas.o)

	OS-Core.CORE2-KRN,fr=B.11.10,fa=HP-UX_B.11.10_64,v=HP:
	/usr/conf/lib/libvm.a(vm_vas.o)

what(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.10,fa=HP-UX_B.11.10_32,v=HP:
	/usr/conf/lib/libvm.a(vm_vas.o):
		vm_vas.c $Date: 2001/04/06 14:34:12 $Revision: cup_i
			80_11.10_pb/2 PATCH_11.10 (PHKL_23866)

	OS-Core.CORE2-KRN,fr=B.11.10,fa=HP-UX_B.11.10_64,v=HP:
	/usr/conf/lib/libvm.a(vm_vas.o):
		vm_vas.c $Date: 2001/04/06 14:34:12 $Revision: cup_i
			80_11.10_pb/2 PATCH_11.10 (PHKL_23866)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.10,fa=HP-UX_B.11.10_32,v=HP:
	1642466651 14820 /usr/conf/lib/libvm.a(vm_vas.o)

	OS-Core.CORE2-KRN,fr=B.11.10,fa=HP-UX_B.11.10_64,v=HP:
	200614630 31120 /usr/conf/lib/libvm.a(vm_vas.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_22744:
	s700: 11.00
	s800: 11.00

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_23866

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_23866.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_23866.  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_23866.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_23866.depot

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

		dd if=/tmp/PHKL_23866.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None