Patch Name: PHKL_23284

Patch Description: s700 10.20 mpctl(2) negative SPU check

Creation Date: 01/02/05

Post Date:  01/02/19

Hardware Platforms - OS Releases:
	s700: 10.20

Products: N/A

Filesets:
	OS-Core.CORE-KRN

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_23284: PANIC

Path Name: /hp-ux_patches/s700/10.X/PHKL_23284

Symptoms:
	PHKL_23284:
	(SR: 8606173973   CR: JAGad43226)
	When mpctl() is called with MPC_GETNEXTSPU and arg1 has a
	negative value, the system will panic with a Data Page
	Fault.  The stack trace is as follows:

	panic+0x14
	report_trap_or_int_and_panic+0x80
	trap+0xdb8
	thandler+0xd20
	mpctl+0x158
	syscall+0x480
	syscallinit+0x54c

Defect Description:
	PHKL_23284:
	(SR: 8606173973   CR: JAGad43226)
	The negative SPU value represented by arg1 is not valid, but
	there aren't any checks for this before that value is used.
	The usage of the invalid SPU results in the Data Page Fault.

	Resolution:
	A check was added to cause mpctl() to return with an error
	if it is called with MPC_GETNEXTSPU and a negative value for
	arg1.

SR:
	8606173973

Patch Files:
	/usr/conf/lib/libhp-ux.a(pm_policy.o)

what(1) Output:
	/usr/conf/lib/libhp-ux.a(pm_policy.o):
		pm_policy.c   $Date: 2001/02/01 16:29:25 $ $Revision
			: 1.7.98.12 $ PATCH_10.20 (PHKL_23284)

cksum(1) Output:
	2834533851 16880 /usr/conf/lib/libhp-ux.a(pm_policy.o)

Patch Conflicts: None

Patch Dependencies:
	s700: 10.20: PHKL_16750

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_23285:
	s800: 10.20

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_23284

	5a. For a standalone system, run swinstall to install the
	    patch:

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_23284.depot

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHKL_23284.  If you do not wish to retain a
	copy of the original software, you can create an empty file
	named /var/adm/sw/patch/PATCH_NOSAVE.

	WARNING: If this file exists when a patch is installed, the
	         patch cannot be deinstalled.  Please be careful
		 when using this feature.

	It is recommended that you move the PHKL_23284.text file to
	/var/adm/sw/patch for future reference.

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

		dd if=/tmp/PHKL_23284.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:
	This patch depends on base patch PHKL_16750 .
	For successful installation, please ensure that PHKL_16750
	is in the same depot with this patch, or PHKL_16750  is
	already installed.