XADM: IS Uses 100% of CPU and Generates Access Violation (178344)


The information in this article applies to:

  • Microsoft Exchange Server 5.0
This article was previously published under Q178344

SYMPTOMS

An IMAIL conversion thread is caught in a loop due to an incorrectly formatted MIME message. As a result, the Microsoft Exchange Server Information Store CPU utilization jumps to 100 percent and the Information Store will eventually generate an access violation.

CAUSE

The Thread handling this message is caught between commit opperations for two converters.

The Microsoft Exchange Information Store issues a commit operation, and the HR returned is 80040c11. According to the comments before IsIMAILRewindError, these errors indicated that the message should be reconverted. This error is IMAIL_E_REWIND_STREAM_822, which is supposed to cause a rewind, then process as 822. The Information Store passes this into the Clean up function, which should set the rewriter to Convert to 822. It does. The Information Store continually sets the rewind error to be rewind and convert as 822, but it never succeeds or changes.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.0.

This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 5.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

MORE INFORMATION

If you are experiencing this problem, the call stack shown in the Dr.Watson dump (and log) will look like the one below (with thousands of calls to EcCommitStream and EcCommitStreamOp). 
   FramePtr  RetAddr   Param1   Param2   Param3   Function Name
   062ef89c  004700d2  00000023 00000004 00000001
   STORE!EcCommitStreamOp+0x88
   062ef8ac  004044c6  00000001 00000023 062ef948 STORE!EcCommitStream+0x46
   062ef90c  00403928  062ef928 00005a00 062ef92c STORE!EcRpc+0xb6a
   062ef928  77e11841  00171330 00f8db6c 00176ec0 STORE!EcDoRpc+0x3e
   062ef948  77e52265  004038ea 062efb3c 00000004 RPCRT4!Invoke+0x28
   062ef964  77e52236  004038ea 062efb3c 00000004
   RPCRT4!NdrCallServerManager+0x15
   062efc28  77e51f9e  00000000 00000000 062efe08 0x77e52236
   062efc40  77e1134f  062efe08 062efe08 00163380 RPCRT4!NdrServerCall+0x19
   062efc7c  77e11122  00404af4 062efe08 062efdc4
   RPCRT4!DispatchToStubInC+0x34
   062efcd0  77e112fb  062efe08 00000000 062efdc4
   RPCRT4!?DispatchToStubWorker@RPC_INTERFACE@@AAEJPAU_RPC_
   MESSAGE@@IPAJ@Z+0xb0
   062efcf0  77e119cf  062efe08 00000000 062efdc4
   RPCRT4!?DispatchToStub@RPC_INTERFACE@@QAEJPAU_RPC_MESSAGE@@IPAJ@Z+0x41
   062efdc8  77e12b98  00144360 062efe68 062efe08
   RPCRT4!?DealWithRequestMessage@WMSG_SASSOCIATION@@QAEXPAT_WMSG_
   MESSAGE@@0PAU_RPC_MESSAGE@@PAPAVWMSG_SBINDING@@IHH@Z+0x182
   062efe40  77e15fff  00144360 062efe68 00000000
   RPCRT4!?DealWithLRPCRequest@WMSG_ADDRESS@@AAEPAT_WMSG_
   MESSAGE@@PAT2@0HPAVWMSG_ASSOCIATION@@@Z+0xab
   062eff90  77e162f0  77e163e5 001545f0 062effec
   RPCRT4!?ReceiveLotsaCalls@WMSG_ADDRESS@@AAEXXZ+0x38
Modification Type:MinorLast Reviewed:9/23/2005
Keywords:kbHotfixServer kbQFE kbbug kbfix kbQFE KB178344
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