Windows freezes or loses cluster disk reservation during a stress test in iSCSI initiator

This article describes an issue when you make a stress test in iSCSI initiator in Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7 Service Pack 1 (SP1), or Windows Server 2008 R2 SP1. Check out the details of the stress test where this problem occurs.

Resolution

To resolve this issue, install the hotfix that is described in this article or the update rollup (recommended) that contains this hotfix. You must restart the computer after you install the hotfix or update rollup.

Windows versionHotfixHotfix prerequisiteUpdate rollupUpdate rollup prerequisite
Windows 8.1, Windows Server 2012 R2Click "Hotfix Download Available"Install Update 2919355 firstGet update rollupInstall Update 2919355 first
Windows 8, Windows Server 2012Click "Hotfix Download Available"No prerequisiteGet update rollupNo prerequisite
Windows 7 SP1, Windows Server 2008 R2 SP1Click "Hotfix Download Available"No prerequisiteNot availableNot applicable


The update rollup fixes many other issues in addition to the issue that the hotfix fixes. We recommend that you use the update rollup. The update rollup is larger than the hotfix. Therefore, the update rollup takes longer to download.

Details of the stress test

This problem occurs when the stress test has the following conditions:

  • The stress test involves multiple iSCSI targets on external storage.
  • Each iSCSI target contains a Logical Unit Number (LUN).
  • A header and data digest are enabled for a cyclic redundancy check (CRC) function or for a checksum function on an iSCSI Initiator.
  • The test load writes to and reads from each volume.
In this scenario, the computer freezes because of the memory leak caused by the msiscsi.sys driver. 

Additionally, in a cluster environment, the computer (the cluster node) may unexpectedly lose cluster disk reservation before the freeze. Because the msiscsi.sys driver sends wrong information that is stored in leaked memory to the cluster disk driver, this causes the cluster to lose disk reservation.

Status

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

More Information

Additional 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 this specific problem.

If the hotfix is available for download, there is a "Hotfix Download Available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to 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 website: 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.


Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

Additional file information

Additional file information for Windows 8.1 and for Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1
File propertyValue
File nameUpdate.mum
File versionNot applicable
File size1,592
Date (UTC)07-Apr-2014
Time (UTC)03:51
PlatformNot applicable
File nameX86_iscsi.inf_31bf3856ad364e35_6.3.9600.17090_none_d1549cad0f4c202d.manifest
File versionNot applicable
File size2,736
Date (UTC)07-Apr-2014
Time (UTC)03:51
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2
File propertyValue
File nameAmd64_iscsi.inf_31bf3856ad364e35_6.3.9600.17090_none_2d733830c7a99163.manifest
File versionNot applicable
File size2,740
Date (UTC)07-Apr-2014
Time (UTC)04:01
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,820
Date (UTC)07-Apr-2014
Time (UTC)04:01
PlatformNot applicable

Additional file information for Windows 8 and for Windows Server 2012

Additional files for all supported x86-based versions of Windows 8
File propertyValue
File nameUpdate.mum
File versionNot applicable
File size1,790
Date (UTC)04-Apr-2014
Time (UTC)13:44
PlatformNot applicable
File nameX86_iscsi.inf_31bf3856ad364e35_6.2.9200.21006_none_3a50cff3dde88ee4.manifest
File versionNot applicable
File size2,736
Date (UTC)04-Apr-2014
Time (UTC)13:44
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 8 and of Windows Server 2012
File propertyValue
File nameAmd64_iscsi.inf_31bf3856ad364e35_6.2.9200.21006_none_966f6b779646001a.manifest
File versionNot applicable
File size2,740
Date (UTC)04-Apr-2014
Time (UTC)13:52
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size2,020
Date (UTC)04-Apr-2014
Time (UTC)13:52
PlatformNot applicable

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
File propertyValue
File nameUpdate.mum
File versionNot applicable
File size1,903
Date (UTC)04-Apr-2014
Time (UTC)06:10
PlatformNot applicable
File nameX86_iscsi.inf_31bf3856ad364e35_6.1.7601.22647_none_3f3746bc6b1c247c.manifest
File versionNot applicable
File size2,456
Date (UTC)04-Apr-2014
Time (UTC)06:13
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File propertyValue
File nameAmd64_iscsi.inf_31bf3856ad364e35_6.1.7601.22647_none_9b55e240237995b2.manifest
File versionNot applicable
File size2,460
Date (UTC)04-Apr-2014
Time (UTC)06:17
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,915
Date (UTC)04-Apr-2014
Time (UTC)06:10
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File propertyValue
File nameIa64_iscsi.inf_31bf3856ad364e35_6.1.7601.22647_none_3f38eab26b1a2d78.manifest
File versionNot applicable
File size2,458
Date (UTC)04-Apr-2014
Time (UTC)06:10
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,451
Date (UTC)04-Apr-2014
Time (UTC)06:10
PlatformNot applicable

Properties

Article ID: 2957560 - Last Review: Jun 12, 2014 - Revision: 1

Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows Server 2012 R2 Standard, Windows 8 Enterprise, Windows 8 Pro, Windows 8, Windows Server 2012 Datacenter, Windows Server 2012 Datacenter, Windows Server 2012 Essentials, Windows Server 2012 Foundation, Windows Server 2012 Foundation, Windows Server 2012 Standard, Windows Server 2012 Standard, Windows 7 Service Pack 1, Windows 7 Enterprise, Windows 7 Home Basic, Windows 7 Home Premium, Windows 7 Professional, Windows 7 Starter, Windows 7 Ultimate, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Datacenter, Windows Server 2008 R2 Enterprise, Windows Server 2008 R2 for Itanium-Based Systems, Windows Server 2008 R2 Foundation, Windows Server 2008 R2 Standard

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