msdaps.dll causing SQL server 2008 R2 crash

msdaps.dll causing SQL server 2008 R2 crash by Prashant Jha

Active

Type:	Bug
ID:	774004
Opened:	12/11/2012 2:04:00 AM
Access Restriction:	Public

Workaround(s)

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User(s) can reproduce this bug

Recently, we have started seeing SQL Server (2008 R2 SP2) to crash often. There is not much information in Errorlog or anywhere except that Application logs suggest it is msdaps.dll crashing SQL Server. It generates a WER dump as well.

Error#1
========
    Faulting application name: sqlservr.exe, version: 2009.100.4000.0, time stamp: 0x4fecc5ba
    Faulting module name: msdaps.dll, version: 6.1.7600.16385, time stamp: 0x4a5bdfb4
    Exception code: 0xc0000005
    Fault offset: 0x000000000005516e
    Faulting process id: 0x744c
    Faulting application start time: 0x01cdd2cb945167e9
    Faulting application path: E:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Binn\sqlservr.exe
    Faulting module path: C:\Program Files\Common Files\System\Ole DB\msdaps.dll
    Report Id: c49753a9-4327-11e2-b8b1-441ea14caee8

Error#2
=========
    Log Name:     Application
    Source:        Application Error
    Date:         12/10/2012 7:14:46 PM
    Event ID:     1000
    Task Category: (100)
    Level:         Error
    Keywords:     Classic
    User:         N/A
    Computer:     xxxxx
    Description:
    Faulting application name: sqlservr.exe, version: 2009.100.4000.0, time stamp: 0x4fecc5ba
    Faulting module name: msdaps.dll, version: 6.1.7600.16385, time stamp: 0x4a5bdfb4
    Exception code: 0xc0000005
    Fault offset: 0x000000000005516e
    Faulting process id: 0x744c
    Faulting application start time: 0x01cdd2cb945167e9
    Faulting application path: E:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Binn\sqlservr.exe
    Faulting module path: C:\Program Files\Common Files\System\Ole DB\msdaps.dll
    Report Id: c49753a9-4327-11e2-b8b1-441ea14caee8

Top of the stack raising AV
=======================
        00000021`fc04dfb0 000007fe`f12723c5 msdaps!CVLHeap::VLFree+0x3e
    00000021`fc04dfe0 000007fe`f1272620 msdaps!CSeqStr::~CSeqStr+0x55
    00000021`fc04e020 000007fe`fde99c8f msdaps!CSeqStr::Release+0x20

I have attached the dump and callstac herewith. Can you pls investigate and let us know why is msdaps.dll causing this crash? What to do to resolve this?

Thank you!

Details (expand)

English

SQL Server 2008 R2

SQL Engine

Windows Server 2008 R2 (all editions) (SP1)

English

No crash.

SQL crash due to AV by msdaps.dll

X64

File Name	Submitted By	Submitted On	File Size
AppCrash_sqlservr.exe_38f5591aa39e26dcafce4c36abff11527cf68b7_cab_8dce87cc.zip (restricted)	Prashant Jha	12/11/2012	-
AV callstack.txt (restricted)	Prashant Jha	12/11/2012	-

Sorry, as you know this is a heap corruption, the problem likely can't be reproduced at will. In fact, I had this issue twice in Dec '12 and hasn't re-surfaced since then.

If you can look into the dumps I already uploaded, and find the root-cause that should be helpful.

Pls don't close it as "Not reproducible" as that would be illogical to do that.