XADM: Information Store May Crash In STORE!CMAPIextr::hrExtractHdr While a Client Downloads POP3 Mail

ID: Q188807

The information in this article applies to:

Microsoft Exchange Server, version 5.5

SYMPTOMS

The Microsoft Exchange Server information store crashes as a POP3 user downloads mail.

CAUSE

During the extraction of the message header, a call to GetNamesFromIDs is made. This call returns a warning that is ignored. In this instance, the data pointer is set to PT_ERROR because one of the properties in the requested set cannot be resolved (the Exchange database engine returned an error indicating the record was not found).

RESOLUTION

To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For more information, please see the following article in the Microsoft Knowledge Base:

Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 2.

MORE INFORMATION

The fix for this case is to simply check for the null pointer in the return data from GetNamesFromIDs.

For more information on the API call GetNamesFromIDs, see the Platform SDK.

The stack on this particular crash will be similar to the one below:


   FramePtr  RetAddr   Param1   Param2   Param3   Function Name
   1403fd04  0040bc7d  ffffffff 00000006 004b6490
    STORE!CMAPIextr::hrExtractHdr+0x9c771
   1403fd10  004b6490  01381900 00000000 0043d2fc
    STORE!MIDL_user_allocate+0xa
   1403fd30  0043d0b3  00000000 00000001 0138c8c0
    STORE!CMAPIextr::hrExtract+0x11
   1403fd40  00440472  0042c865 0138c8c0 0138dad0
    STORE!CINETemtr::hrStartMessage+0x23
   1403fd44  0042c865  0138c8c0 0138dad0 00000400
    STORE!CmcvtrBptStart::hrEmit+0x9
   1403fd6c  0042c78b  0138e180 00000400 1403fde0
    STORE!CINETemtr::hrEmit+0x99
   1403fd88  6fff1921  6fff1965 00000003 00000001
    STORE!CConvertStream::Read+0x5b
   1403fdb8  00480c09  01387ba0 0138e180 00000400
    EXCHMEM!MpHeapAlloc+0x101
   1403fe90  00480a9c  0000000a 9cefde00 ffffffff
    STORE!POP3CON::EcRenderMessage+0x12e({...})
   1403feb4  004809f6  0000000a 9cefde00 ffffffff
    STORE!POP3CON::EcSendMessage+0x47({...})
   1403fed4  00462084  0000002c 77f05140 01387df0
    STORE!POP3CON::EcRetr+0x91
   1403feec  00461b2b  00000004 0000002c 01387610
    STORE!POP3CON::OnTransactionCmd+0xa2


Keywords          : exc55sp2fix 
Version           : WinNT:5.5
Platform          : winnt 
Issue type        : kbbug

Last Reviewed: April 21, 1999