The PSXSS.EXE process may stop unexpectedly on a computer that has Utilities and SDK for Subsystem for SUA installed in Windows Server 2008 or in Windows Vista

Gælder for: Windows Server 2008 Service Pack 2Windows Vista Service Pack 2

Symptoms


Consider the following scenario:
  • You install Utilities and SDK for Subsystem for UNIX-based Applications (SUA) on a computer that is running Windows Server 2008 or Windows Vista.
  • You run a multithreaded application that uses portable operating system interface (POSIX) threads on the computer.
In this scenario, the PSXSS.EXE process may stop unexpectedly, and the following event is logged into the Application log:
Log Name:      Application
Source: Application Error
Date: <date>
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Computer: <computer>
Description:
Faulting application psxss.exe, version <version>, time stamp <timestamp>, faulting module ntdll.dll, version <version>, time stamp <timestamp>, exception code 0xc0000005, fault offset <offset>, process id <process id>, application start time <time>.

Cause


This problem occurs because the pointer to the session structure of the process is not set to NULL after the structure is released. When another thread tries to access the structure, a heap corruption occurs.

Resolution


Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that ou wait for the next software update that contains this hotfix.

If the hotfix is available for doywnload, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running or Windows Server 2008 Service Pack 2 (SP2) Windows Vista Service Pack 2 (SP2). Additionally, you must have Utilities and SDK for Subsystem for UNIX-based Applications installed on the computer.
For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service pack

For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849 How to obtain the latest service pack for Windows Server 2008

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows Vista and Windows Server 2008 file information notes
Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies to" section in articles to determine the actual operating system that each hotfix applies to.
  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.
    VersionProductSR_LevelService branch
    6.0.600
    2.
    22xxx
    Windows Vista and Windows Server 2008SP2LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 and for Windows Vista" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed by using a Microsoft digital signature.
For all supported x86-based versions of Windows Server 2008 SP2 and of Windows Vista SP2
File nameFile versionFile sizeDateTimePlatform
Baseu.dnlNot applicable16604-Apr-200906:08Not applicable
Baseu.prmNot applicable1,15304-Apr-200906:08Not applicable
Disablesetuid.iniNot applicable9204-Apr-200906:08Not applicable
Download.urlNot applicable7104-Apr-200906:08Not applicable
Enablesetuid.iniNot applicable9204-Apr-200906:08Not applicable
Posix.exe6.0.6002.2245980,89602-Aug-201013:36x86
Posixsscom.dll6.0.6002.224595,63202-Aug-201016:12x86
Psxdll.dll6.0.6002.22459314,88002-Aug-201016:12x86
Psxdllsvr.dll6.0.6002.22459364,03202-Aug-201016:12x86
Psxdrv.sys6.0.6002.224599,21602-Aug-201013:36x86
Psxrun.exe6.0.6002.2245940,96002-Aug-201013:36x86
Psxss.exe6.0.6002.22459654,33602-Aug-201013:37x86
Suacore-ppdlic.xrm-msNot applicable2,99302-Aug-201015:43Not applicable
Suares.dll6.0.6002.224592,04802-Aug-201013:36x86
Baseu.dnlNot applicable16604-Apr-200906:08Not applicable
Baseu.prmNot applicable1,15304-Apr-200906:08Not applicable
Desktop.iniNot applicable8104-Apr-200906:08Not applicable
Disablesetuid.iniNot applicable9204-Apr-200906:08Not applicable
Download.urlNot applicable7104-Apr-200906:08Not applicable
Enablesetuid.iniNot applicable9204-Apr-200906:08Not applicable
Posix.exe6.0.6002.2245980,89602-Aug-201013:36x86
Posixsscom.dll6.0.6002.224595,63202-Aug-201016:12x86
Psxdll.dll6.0.6002.22459314,88002-Aug-201016:12x86
Psxdllsvr.dll6.0.6002.22459364,03202-Aug-201016:12x86
Psxdrv.sys6.0.6002.224599,21602-Aug-201013:36x86
Psxrun.exe6.0.6002.2245940,96002-Aug-201013:36x86
Psxss.exe6.0.6002.22459654,33602-Aug-201013:37x86
Sua-ppdlic.xrm-msNot applicable2,98102-Aug-201015:43Not applicable
Suagc.exe6.0.6002.224597,68002-Aug-201013:36x86
Suares.dll6.0.6002.224592,04802-Aug-201013:36x86
For all supported x64-based versions of Windows Server 2008 SP2 and of Windows Vista SP2
File nameFile versionFile sizeDateTimePlatform
Baseu.dnlNot applicable16603-Apr-200921:35Not applicable
Baseu.prmNot applicable1,15303-Apr-200921:35Not applicable
Disablesetuid.iniNot applicable9203-Apr-200921:35Not applicable
Download.urlNot applicable7103-Apr-200921:35Not applicable
Enablesetuid.iniNot applicable9203-Apr-200921:35Not applicable
Posix.exe6.0.6002.2245989,08802-Aug-201013:50x64
Psxdll.dll6.0.6002.22459333,31202-Aug-201016:15x64
Psxdllsvr.dll6.0.6002.22459382,46402-Aug-201016:15x64
Psxdrv.sys6.0.6002.2245910,24002-Aug-201013:50x64
Psxrun.exe6.0.6002.2245944,54402-Aug-201013:50x64
Psxss.exe6.0.6002.22459846,84802-Aug-201013:51x64
Suacore-ppdlic.xrm-msNot applicable2,99302-Aug-201015:50Not applicable
Suares.dll6.0.6002.224592,04802-Aug-201013:50x64
Baseu.dnlNot applicable16603-Apr-200921:35Not applicable
Baseu.prmNot applicable1,15303-Apr-200921:35Not applicable
Desktop.iniNot applicable8103-Apr-200921:35Not applicable
Disablesetuid.iniNot applicable9203-Apr-200921:35Not applicable
Download.urlNot applicable7103-Apr-200921:35Not applicable
Enablesetuid.iniNot applicable9203-Apr-200921:35Not applicable
Posix.exe6.0.6002.2245989,08802-Aug-201013:50x64
Psxdll.dll6.0.6002.22459333,31202-Aug-201016:15x64
Psxdllsvr.dll6.0.6002.22459382,46402-Aug-201016:15x64
Psxdrv.sys6.0.6002.2245910,24002-Aug-201013:50x64
Psxrun.exe6.0.6002.2245944,54402-Aug-201013:50x64
Psxss.exe6.0.6002.22459846,84802-Aug-201013:51x64
Sua-ppdlic.xrm-msNot applicable2,98102-Aug-201015:50Not applicable
Suagc.exe6.0.6002.224598,70402-Aug-201013:50x64
Suares.dll6.0.6002.224592,04802-Aug-201013:50x64
Posixsscom.dll6.0.6002.224595,63202-Aug-201016:12x86
Psxdll.dll6.0.6002.22459333,82402-Aug-201016:12x86
Psxdllsvr.dll6.0.6002.22459382,97602-Aug-201016:12x86
Posixsscom.dll6.0.6002.224595,63202-Aug-201016:12x86
Psxdll.dll6.0.6002.22459333,82402-Aug-201016:12x86
Psxdllsvr.dll6.0.6002.22459382,97602-Aug-201016:12x86
For all supported IA-64-based versions of Windows Server 2008 SP2
File nameFile versionFile sizeDateTimePlatform
Baseu.dnlNot applicable16603-Apr-200921:35Not applicable
Baseu.prmNot applicable1,15303-Apr-200921:35Not applicable
Desktop.iniNot applicable8103-Apr-200921:35Not applicable
Disablesetuid.iniNot applicable9203-Apr-200921:35Not applicable
Download.urlNot applicable7103-Apr-200921:35Not applicable
Enablesetuid.iniNot applicable9203-Apr-200921:35Not applicable
Posix.exe6.0.6002.22459181,24802-Aug-201013:26IA-64
Psxdll.dll6.0.6002.22459735,74402-Aug-201015:43IA-64
Psxdllsvr.dll6.0.6002.22459761,34402-Aug-201015:43IA-64
Psxdrv.sys6.0.6002.2245920,48002-Aug-201013:26IA-64
Psxrun.exe6.0.6002.2245975,77602-Aug-201013:26IA-64
Psxss.exe6.0.6002.224591,645,05602-Aug-201013:27IA-64
Sua-ppdlic.xrm-msNot applicable2,98102-Aug-201015:17Not applicable
Suagc.exe6.0.6002.2245916,38402-Aug-201013:26IA-64
Suares.dll6.0.6002.224592,04802-Aug-201013:26IA-64
Posixsscom.dll6.0.6002.224595,63202-Aug-201016:12x86
Psxdll.dll6.0.6002.22459333,82402-Aug-201016:12x86
Psxdllsvr.dll6.0.6002.22459382,97602-Aug-201016:12x86

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information


For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista SP2 and of Windows Server 2008 SP2
File nameX86_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.0.6002.22459_none_f6a086e8b6d03313.manifest
File versionNot applicable
File size67,914
Date (UTC)02-Aug-2010
Time (UTC)16:31
File nameX86_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.22459_none_762b64db0653ef75.manifest
File versionNot applicable
File size72,810
Date (UTC)02-Aug-2010
Time (UTC)16:32
Additional files for all supported x64-based versions of Windows Vista SP2 and of Windows Server 2008 SP2
File nameAmd64_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.0.6002.22459_none_52bf226c6f2da449.manifest
File versionNot applicable
File size67,414
Date (UTC)02-Aug-2010
Time (UTC)16:32
File nameAmd64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.22459_none_d24a005ebeb160ab.manifest
File versionNot applicable
File size73,989
Date (UTC)02-Aug-2010
Time (UTC)16:33
File nameWow64_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.0.6002.22459_none_5d13ccbea38e6644.manifest
File versionNot applicable
File size42,587
Date (UTC)02-Aug-2010
Time (UTC)16:18
File nameWow64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.22459_none_dc9eaab0f31222a6.manifest
File versionNot applicable
File size42,068
Date (UTC)02-Aug-2010
Time (UTC)16:19
Additional files for all supported IA-64-based versions of Windows Server 2008 SP2
File nameIa64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.22459_none_762d08d10651f871.manifest
File versionNot applicable
File size73,967
Date (UTC)02-Aug-2010
Time (UTC)15:54
File nameWow64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.22459_none_dc9eaab0f31222a6.manifest
File versionNot applicable
File size42,068
Date (UTC)02-Aug-2010
Time (UTC)16:19