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

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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:

http://support.microsoft.com/contactus/?ws=supportNote 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.

    Version

    Product

    SR_Level

    Service branch

    6.0.600
    2.
    22xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • 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 name

File version

File size

Date

Time

Platform

Baseu.dnl

Not applicable

166

04-Apr-2009

06:08

Not applicable

Baseu.prm

Not applicable

1,153

04-Apr-2009

06:08

Not applicable

Disablesetuid.ini

Not applicable

92

04-Apr-2009

06:08

Not applicable

Download.url

Not applicable

71

04-Apr-2009

06:08

Not applicable

Enablesetuid.ini

Not applicable

92

04-Apr-2009

06:08

Not applicable

Posix.exe

6.0.6002.22459

80,896

02-Aug-2010

13:36

x86

Posixsscom.dll

6.0.6002.22459

5,632

02-Aug-2010

16:12

x86

Psxdll.dll

6.0.6002.22459

314,880

02-Aug-2010

16:12

x86

Psxdllsvr.dll

6.0.6002.22459

364,032

02-Aug-2010

16:12

x86

Psxdrv.sys

6.0.6002.22459

9,216

02-Aug-2010

13:36

x86

Psxrun.exe

6.0.6002.22459

40,960

02-Aug-2010

13:36

x86

Psxss.exe

6.0.6002.22459

654,336

02-Aug-2010

13:37

x86

Suacore-ppdlic.xrm-ms

Not applicable

2,993

02-Aug-2010

15:43

Not applicable

Suares.dll

6.0.6002.22459

2,048

02-Aug-2010

13:36

x86

Baseu.dnl

Not applicable

166

04-Apr-2009

06:08

Not applicable

Baseu.prm

Not applicable

1,153

04-Apr-2009

06:08

Not applicable

Desktop.ini

Not applicable

81

04-Apr-2009

06:08

Not applicable

Disablesetuid.ini

Not applicable

92

04-Apr-2009

06:08

Not applicable

Download.url

Not applicable

71

04-Apr-2009

06:08

Not applicable

Enablesetuid.ini

Not applicable

92

04-Apr-2009

06:08

Not applicable

Posix.exe

6.0.6002.22459

80,896

02-Aug-2010

13:36

x86

Posixsscom.dll

6.0.6002.22459

5,632

02-Aug-2010

16:12

x86

Psxdll.dll

6.0.6002.22459

314,880

02-Aug-2010

16:12

x86

Psxdllsvr.dll

6.0.6002.22459

364,032

02-Aug-2010

16:12

x86

Psxdrv.sys

6.0.6002.22459

9,216

02-Aug-2010

13:36

x86

Psxrun.exe

6.0.6002.22459

40,960

02-Aug-2010

13:36

x86

Psxss.exe

6.0.6002.22459

654,336

02-Aug-2010

13:37

x86

Sua-ppdlic.xrm-ms

Not applicable

2,981

02-Aug-2010

15:43

Not applicable

Suagc.exe

6.0.6002.22459

7,680

02-Aug-2010

13:36

x86

Suares.dll

6.0.6002.22459

2,048

02-Aug-2010

13:36

x86

For all supported x64-based versions of Windows Server 2008 SP2 and of Windows Vista SP2

File name

File version

File size

Date

Time

Platform

Baseu.dnl

Not applicable

166

03-Apr-2009

21:35

Not applicable

Baseu.prm

Not applicable

1,153

03-Apr-2009

21:35

Not applicable

Disablesetuid.ini

Not applicable

92

03-Apr-2009

21:35

Not applicable

Download.url

Not applicable

71

03-Apr-2009

21:35

Not applicable

Enablesetuid.ini

Not applicable

92

03-Apr-2009

21:35

Not applicable

Posix.exe

6.0.6002.22459

89,088

02-Aug-2010

13:50

x64

Psxdll.dll

6.0.6002.22459

333,312

02-Aug-2010

16:15

x64

Psxdllsvr.dll

6.0.6002.22459

382,464

02-Aug-2010

16:15

x64

Psxdrv.sys

6.0.6002.22459

10,240

02-Aug-2010

13:50

x64

Psxrun.exe

6.0.6002.22459

44,544

02-Aug-2010

13:50

x64

Psxss.exe

6.0.6002.22459

846,848

02-Aug-2010

13:51

x64

Suacore-ppdlic.xrm-ms

Not applicable

2,993

02-Aug-2010

15:50

Not applicable

Suares.dll

6.0.6002.22459

2,048

02-Aug-2010

13:50

x64

Baseu.dnl

Not applicable

166

03-Apr-2009

21:35

Not applicable

Baseu.prm

Not applicable

1,153

03-Apr-2009

21:35

Not applicable

Desktop.ini

Not applicable

81

03-Apr-2009

21:35

Not applicable

Disablesetuid.ini

Not applicable

92

03-Apr-2009

21:35

Not applicable

Download.url

Not applicable

71

03-Apr-2009

21:35

Not applicable

Enablesetuid.ini

Not applicable

92

03-Apr-2009

21:35

Not applicable

Posix.exe

6.0.6002.22459

89,088

02-Aug-2010

13:50

x64

Psxdll.dll

6.0.6002.22459

333,312

02-Aug-2010

16:15

x64

Psxdllsvr.dll

6.0.6002.22459

382,464

02-Aug-2010

16:15

x64

Psxdrv.sys

6.0.6002.22459

10,240

02-Aug-2010

13:50

x64

Psxrun.exe

6.0.6002.22459

44,544

02-Aug-2010

13:50

x64

Psxss.exe

6.0.6002.22459

846,848

02-Aug-2010

13:51

x64

Sua-ppdlic.xrm-ms

Not applicable

2,981

02-Aug-2010

15:50

Not applicable

Suagc.exe

6.0.6002.22459

8,704

02-Aug-2010

13:50

x64

Suares.dll

6.0.6002.22459

2,048

02-Aug-2010

13:50

x64

Posixsscom.dll

6.0.6002.22459

5,632

02-Aug-2010

16:12

x86

Psxdll.dll

6.0.6002.22459

333,824

02-Aug-2010

16:12

x86

Psxdllsvr.dll

6.0.6002.22459

382,976

02-Aug-2010

16:12

x86

Posixsscom.dll

6.0.6002.22459

5,632

02-Aug-2010

16:12

x86

Psxdll.dll

6.0.6002.22459

333,824

02-Aug-2010

16:12

x86

Psxdllsvr.dll

6.0.6002.22459

382,976

02-Aug-2010

16:12

x86

For all supported IA-64-based versions of Windows Server 2008 SP2

File name

File version

File size

Date

Time

Platform

Baseu.dnl

Not applicable

166

03-Apr-2009

21:35

Not applicable

Baseu.prm

Not applicable

1,153

03-Apr-2009

21:35

Not applicable

Desktop.ini

Not applicable

81

03-Apr-2009

21:35

Not applicable

Disablesetuid.ini

Not applicable

92

03-Apr-2009

21:35

Not applicable

Download.url

Not applicable

71

03-Apr-2009

21:35

Not applicable

Enablesetuid.ini

Not applicable

92

03-Apr-2009

21:35

Not applicable

Posix.exe

6.0.6002.22459

181,248

02-Aug-2010

13:26

IA-64

Psxdll.dll

6.0.6002.22459

735,744

02-Aug-2010

15:43

IA-64

Psxdllsvr.dll

6.0.6002.22459

761,344

02-Aug-2010

15:43

IA-64

Psxdrv.sys

6.0.6002.22459

20,480

02-Aug-2010

13:26

IA-64

Psxrun.exe

6.0.6002.22459

75,776

02-Aug-2010

13:26

IA-64

Psxss.exe

6.0.6002.22459

1,645,056

02-Aug-2010

13:27

IA-64

Sua-ppdlic.xrm-ms

Not applicable

2,981

02-Aug-2010

15:17

Not applicable

Suagc.exe

6.0.6002.22459

16,384

02-Aug-2010

13:26

IA-64

Suares.dll

6.0.6002.22459

2,048

02-Aug-2010

13:26

IA-64

Posixsscom.dll

6.0.6002.22459

5,632

02-Aug-2010

16:12

x86

Psxdll.dll

6.0.6002.22459

333,824

02-Aug-2010

16:12

x86

Psxdllsvr.dll

6.0.6002.22459

382,976

02-Aug-2010

16:12

x86

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 name

X86_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.0.6002.22459_none_f6a086e8b6d03313.manifest

File version

Not applicable

File size

67,914

Date (UTC)

02-Aug-2010

Time (UTC)

16:31

File name

X86_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.22459_none_762b64db0653ef75.manifest

File version

Not applicable

File size

72,810

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 name

Amd64_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.0.6002.22459_none_52bf226c6f2da449.manifest

File version

Not applicable

File size

67,414

Date (UTC)

02-Aug-2010

Time (UTC)

16:32

File name

Amd64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.22459_none_d24a005ebeb160ab.manifest

File version

Not applicable

File size

73,989

Date (UTC)

02-Aug-2010

Time (UTC)

16:33

File name

Wow64_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.0.6002.22459_none_5d13ccbea38e6644.manifest

File version

Not applicable

File size

42,587

Date (UTC)

02-Aug-2010

Time (UTC)

16:18

File name

Wow64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.22459_none_dc9eaab0f31222a6.manifest

File version

Not applicable

File size

42,068

Date (UTC)

02-Aug-2010

Time (UTC)

16:19

Additional files for all supported IA-64-based versions of Windows Server 2008 SP2

File name

Ia64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.22459_none_762d08d10651f871.manifest

File version

Not applicable

File size

73,967

Date (UTC)

02-Aug-2010

Time (UTC)

15:54

File name

Wow64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.22459_none_dc9eaab0f31222a6.manifest

File version

Not applicable

File size

42,068

Date (UTC)

02-Aug-2010

Time (UTC)

16:19

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