Unhandled exception at 0x778640f2 (ntdll.dll) in VSPerfMon.exe: 0xC0000374: A heap has been corrupted.

Question

1. Instrumented my Azure service DLLs using vsinstr.exe. 
2. Started coverage monitor using vsperfcmd.exe.
3. Running Azure service on local emulator using csrun.exe

No clue why I am getting following error:

Faulting application name: VSPerfMon.exe, version: 10.0.30319.1, time stamp: 0x4ba23ad7
Faulting module name: ntdll.dll, version: 6.1.7601.17725, time stamp: 0x4ec4aa8e
Exception code: 0xc0000005
Fault offset: 0x000000000002bb6f
Faulting process id: 0x2cec
Faulting application start time: 0x01cd29782d80706f
Faulting application path: C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Performance Tools\x64\VSPerfMon.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 8ca1f9f7-956b-11e1-bf30-00155d889209

Fault bucket 63783591, type 4
Event Name: APPCRASH
Response: Not available
Cab Id: 1761439495

Problem signature:
P1: VSPerfMon.exe
P2: 10.0.30319.1
P3: 4ba23ad7
P4: ntdll.dll
P5: 6.1.7601.17725
P6: 4ec4aa8e
P7: c0000005
P8: 000000000002bb6f
P9: 
P10: 

Attached files:
C:\Users\test\AppData\Local\Temp\2\WER4320.tmp.WERInternalMetadata.xml
C:\Users\test\AppData\Local\Temp\2\WER4BBC.tmp.appcompat.txt
C:\Users\test\AppData\Local\Temp\2\WER4BEC.tmp.mdmp

These files may be available here:


Analysis symbol: 
Rechecking for solution: 0
Report Id: 8ca1f9f7-956b-11e1-bf30-00155d889209
Report Status: 8

Answer 1

1. Instrumented my Azure service DLLs using vsinstr.exe.
2. Started coverage monitor using vsperfcmd.exe.
3. Running Azure service on local emulator using csrun.exe

No clue why I am getting following error:

Faulting application name: VSPerfMon.exe, version: 10.0.30319.1, time stamp: 0x4ba23ad7
Faulting module name: ntdll.dll, version: 6.1.7601.17725, time stamp: 0x4ec4aa8e
Exception code: 0xc0000005
Fault offset: 0x000000000002bb6f
Faulting process id: 0x2cec
Faulting application start time: 0x01cd29782d80706f
Faulting application path: C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Performance Tools\x64\VSPerfMon.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 8ca1f9f7-956b-11e1-bf30-00155d889209

Fault bucket 63783591, type 4
Event Name: APPCRASH
Response: Not available
Cab Id: 1761439495

Problem signature:
P1: VSPerfMon.exe
P2: 10.0.30319.1
P3: 4ba23ad7
P4: ntdll.dll
P5: 6.1.7601.17725
P6: 4ec4aa8e
P7: c0000005
P8: 000000000002bb6f
P9:
P10:

Attached files:
C:\Users\test\AppData\Local\Temp\2\WER4320.tmp.WERInternalMetadata.xml
C:\Users\test\AppData\Local\Temp\2\WER4BBC.tmp.appcompat.txt
C:\Users\test\AppData\Local\Temp\2\WER4BEC.tmp.mdmp

These files may be available here:


Analysis symbol:
Rechecking for solution: 0
Report Id: 8ca1f9f7-956b-11e1-bf30-00155d889209
Report Status: 8

Answer 2

Hi Poojasingh,

Thank you for posting in the MSDN forum.

Would you mind letting us know more information? Can you share us the detailed steps about what you are doing? What result did you want to get? Do you mean that you are using the Visual Studio Performance Tools (Profiler) to get the code coverage?

It seems that it is also related to Windows Azure, so it will be better if you could provide more information.

Best Regards,

---

Jack Zhai [MSFT]
MSDN Community Support | Feedback to us

Answer 3

I'm having a very similar issue.

I have a couple (10) of processes, all on the same machine, and they all use a few (8) common binaries.

Here are my steps for code coverage:

1) used vsinstr.exe to insrument my binaries.

2) calling vsperfcmd.exe /START:COVERAGE /OUTPUT:D:\myoutput.coverage /CS /USER:myuser

3) calling vsperfcmd.exe /GLOBALOFF (because i'm not intrested in collecting data during the next phase).

4) warmup for my processes. The warmup is achived by invoking various calls on the API the proccesses expose, which basically makes them load data and start various initializing logic. During this phase, The vsperfmon.exe process, crashes with the same error as posted above.

I found this article: http://connect.microsoft.com/VisualStudio/feedback/details/689937/vsperf-console-performance-monitor-crash
which suggests that a certain KB (KB 2679717) might solve this issue, however i couldn't find this KB anywhere.

I did notice the following:

Vsperfmon.exe does not crash if i limit the number of proccesses. For example, it might work for 6 instrumented processes, but will crush on the 7.

Thanks in advance for your help.