XADM: IS Stops Unexpectedly Formatting a Binary Property Value

• Microsoft Exchange Server, version 5.5

SYMPTOMS

During normal operations, the information store may stop unexpectedly, and an Access Violation error message appears on the server console. If Dr. Watson is active as the default debugger, a Dr. Watson log and a User.dmp file (if configured to create a User.dmp file) may be produced.

CAUSE

The information store stops because an attempt is made to de-reference a NULL pointer during a memory copy operation.

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 Drwtsn32.log file that is produced will look similar to the following. Note that the ESI register is zero:

   Microsoft (R) Windows NT (TM) Version 4.00 DrWtsn32
   Copyright (C) 1985-1995 Microsoft Corp. All rights reserved.

   Application exception occurred:
         App: STORE.DBG (pid=76)
         When: 2/19/1998 @ 9:39:5.106
         Exception number: c0000005 (access violation)

   State Dump for Thread Id 0x1aa

   EAX=055252a8  EBX=9f3f0002  ECX=27cfc000  EDX=9f3f0000  ESI=00000000
   EDI=188ca081
   EIP=00437b76  ESP=148df964  EBP=188ca070  EFL=00000216
   CS=001b  DS=0023  ES=0023  SS=0023  FS=0038  GS=0000

   function:STORE!@EcFormatMVBinary

         .....
         00437B66  761F             jbe         EcFormatMVBinary+66h

         0437B68   8B12             mov         edx,dword ptr [edx]

         00437B6A  8B7004           mov         esi,dword ptr [ibMost]

         00437B6D  8D7C1502         lea         edi,dword ptr [ebp+edx+2]

         00437B71  8BD1             mov         edx,ecx

         00437B73  C1E902           shr         ecx,2

   FAULT => 00437B76  F3A5             rep movs    dword ptr es:[edi],dword
         ptr [esi]
         .....

   *----> Stack Back Trace <----*
   FramePtr  RetAddr   Param1   Param2   Param3   Function Name
   148df974  00410c6b  00007fff 00000001 055252a8
    STORE!EcFormatMVBinary+0x5d
   148df99c  0040f898  00007fff 055252a0 148df9c8
    STORE!EcFormatValue+0x1b1
   148df9cc  004268d6  00007fff 00000001 00000000 STORE!EcFormatRow+0xcc
   148dfa20  0040c558  00000001 0000355a 19ac8ee8
    STORE!EcGetPropsSpecific+0x17c
   00000006  00000000  00000000 00000000 00000000 STORE!EcRpc+0x471 

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