The W3wp.exe process may crash in low memory situations in Exchange Server 2003

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SYMPTOMS

In Microsoft Exchange Server 2003, the W3wp.exe process may crash in low memory situations.

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CAUSE

This problem may occur if the Davex.dll file does not check memory allocation before it uses the memory.

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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. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

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, 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=support (http://support.microsoft.com/contactus/?ws=support)

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

Microsoft Exchange Server 2003 Service Pack 2 (SP2).

Restart requirement

You do not have to restart the computer after you apply this software update.

Hotfix replacement information

This hotfix does not replace any other software updates.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Collapse this tableExpand this table

File name	File version	File size	Date	Time	Platform
Davex.dll	6.5.7650.25	1,127,936	18-Jan-2006	04:45	x86

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STATUS

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

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MORE INFORMATION

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

824684 (http://support.microsoft.com/kb/824684/ ) Description of the standard terminology that is used to describe Microsoft software updates

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

817903 (http://support.microsoft.com/kb/817903/ ) New naming schema for Exchange Server software update packages

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MORE INFORMATION

This problem is characterized by the following call stack:

ChildEBP RetAddr  Args to Child
1dbefca8 59f75d25 00000001 0ae5ee78 00000000 davex!CXMLBody::ScAddTextBytes+0xbc
1dbefcdc 59f75dbf 00000001 0ae5bb64 00000000 davex!CXNode::ScAddUnicodeResponseBytes+0x14e
1dbefcf0 59f7670e 00000000 0ae5fa98 08e6f160 davex!CXNode::ScWriteTagName+0x25 1dbefd00 59f06a33 0ae5fa98 0ae5fa98 1dbefd3c davex!CXNode::ScDone+0x90 1dbefd1c 59f06a6d 1dbefdc0 1dbefd48 59eebf9b davex!CXNode::~CXNode+0x23
1dbefd28 59eebf9b 00000001 00000000 1dbefdc0 davex!CXNode::`scalar deleting destructor'+0xb
1dbefd48 59f21583 00000000 0000001d 00000000 davex!CEmitterNode::~CEmitterNode+0x27
1dbefdec 59f21787 59f2793c 18361010 59f971b4 davex!CPackedResponse::PackedResponse+0xc38
1dbefdf0 59f2793c 18361010 59f971b4 59f94350 davex!CPackedResponse::SendBufferComplete+0x25
1dbefe34 59f063e0 18361010 09f0e338 18361000 davex!ScDispatchQueueItem+0xe7
1dbefe64 62f396f9 09f0e33c 00001009 09f0e34d davex!CDavEpoxyQueueMgr::HrEpoxyRespHandler+0xd5
1dbefe90 62f3be29 00000001 09f0e33c 59fd67f8 epoxy!CEpoxyQ::DispatchRequest+0x86
1dbefee0 59f062e0 00000000 59fd67f8 00000000 epoxy!CEpoxyQ::IOCPNotification+0x102
1dbeff1c 59f2b20b 00000000 77e6b44f 0d731e90 davex!CDavEpoxyQueueMgr::DoWork+0xca
1dbeff50 68628b70 59fd67f8 00000000 00000000 davex!CAtqPoolManager::AtqIOComplete+0x40
1dbeff84 68628e6d 00000000 00000000 0d731e94 lsatq!AtqpProcessContext+0x266
1dbeffb8 77e66063 00000000 00000000 00000000 lsatq!AtqPoolThread+0x1a8 1dbeffec 00000000 68628cc5 00000000 00000000 kernel32!BaseThreadStart+0x34

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