Patch-ID# 117127-03

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Keywords: security t_chip_resched chip load
Synopsis: SunOS 5.9: header Patch
Date: Jul/24/2007

Install Requirements: After installing this patch on an active boot environment, the system will be in a potentially inconsistent state until a reboot is performed. Unless
otherwise specified in the Special Install Instructions below, it is normally safe to apply further patches prior to initiating the reboot due to the relatively small footprint of the patch utilities. Normal operations must not be resumed until after the reboot is performed.
Use Single User Mode (run level S) when installing this patch on an active boot environment. An alternative may be specified in the Special Install Instructions.

Solaris Release: 9

SunOS Release: 5.9

Unbundled Product:

Unbundled Release:

Xref: This patch available for x86 as patch 117128

Topic: SunOS 5.9: header Patch

Relevant Architectures: sparc

Bugs fixed with this patch:

Sun CR #	Bug #
4942663	15182314
4944406	15182722
5059500	15214376
6351092	15298215

Changes incorporated in this version: 6351092

Patches accumulated and obsoleted by this patch:

Patches which conflict with this patch:

Patches required with this patch: 112233-12 (or greater)

Obsoleted by:

Files included with this patch:

/usr/include/sys/chip.h
/usr/include/sys/thread.h

Problem Description:

6351092 race for t_ctx in removectx() can lead to panic
 
(from 117127-02)
 
5059500 FSS and FX threads require more accurate runq balancing
 
(from 117127-01)
 
4942663 chip load accounting could be better
4944406 failed assert: !(tp->t_flag & T_CHIP_RESCHED)

Patch Installation Instructions:

--------------------------------
 
For Solaris 2.0-2.6 releases, refer to the Install.info file and/or
the README within the patch for instructions on using the generic
'installpatch' and 'backoutpatch' scripts provided with each patch.
 
For Solaris 7-10 releases, refer to the man pages for instructions
on using 'patchadd' and 'patchrm' scripts provided with Solaris.
Any other special or non-generic installation instructions should be
described below as special instructions.  The following example
installs a patch to a standalone machine:
 
       example# patchadd /var/spool/patch/104945-02
 
The following example removes a patch from a standalone system:
 
       example# patchrm 104945-02
 
For additional examples please see the appropriate man pages.

Special Install Instructions:

-----------------------------
 
NOTE 1: To get the complete fix for bugids 4942663 (chip load accounting could
        be better) and 4944406 (failed assert: !(tp->t_flag & T_CHIP_RESCHED)),
        please also install the following patches:
 
        117129-01 (or greater) adb Patch
        117171-02 (or greater) Kernel Patch
 
NOTE 2: To get the complete fix for bugid 5059500 (FSS and FX threads require
        more accurate runq balancing), please also install the following
        patches:
 
        117171-09 (or greater) Kernel Patch
        117433-01 (or greater) FSS FX RT Patch
 
NOTE 3: To get the complete fix for bugid 6351092 (race for t_ctx in
        removectx() can lead to panic), please also install the following
        patches:
 
        115553-27 (or greater)  USB Drivers and Framework Patch
        122300-10 (or greater)  Kernel Patch

README -- Last modified date: Saturday, November 10, 2012