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Challenges of Debugging Optimized x64 Code

If you have not had the luxury of debugging optimized x64 code as of yet, don’t wait much longer and fall behind the times! Due to the x64 fastcall-like calling convention coupled with the abundance of general purpose registers, finding variable values Read More...
Posted Friday, January 09, 2009 8:50 PM by ntdebug | 4 Comments
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Remote kernel or user mode debugging of dumps or live systems

GES (Global Escalation Services) is not only responsible for helping our external customers, but we spend a great deal of time collaborating with engineers and developers around the world at our support and development sites. We often look at large dump Read More...
Posted Tuesday, October 28, 2008 7:43 PM by ntdebug | 2 Comments
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How to Determine Which Resource is Causing the Cluster Resource Monitor to Crash – Possible Deadlock

Hello, my name is John Marlin, and I am a Support Escalation Engineer on the Microsoft Platform Cluster Services Support team. I wanted to talk about the Windows 2003 Cluster Resource Monitor and with what happens when it crashes. In this blog I’ll show Read More...
Posted Wednesday, October 15, 2008 7:53 PM by ntdebug | 1 Comments
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NDIS Case Study 1 - NDIS Packet Double Completion

Hi, this is Anurag again. Here is a case study of an NDIS driver causing a problem due to double completion of a send packet. A protocol driver allocates a NDIS packet and gives it to the miniport driver to be sent on the wire. A miniport driver is supposed Read More...
Posted Tuesday, September 30, 2008 10:59 PM by ntdebug | 1 Comments
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Some of our favorite debugging-related links

Today we’re posting links to some of our favorite debugging - related content on the web . Post your own favorites as a comment to share them with everyone! Reverse Engineering and Debugging Blogs DumpAnalysis MetaSploit Nynaeve Mark Russinovich's Blog Read More...
Posted Thursday, September 25, 2008 9:40 PM by ntdebug | 4 Comments
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NDIS - Part 1

Hi, my name Anurag Sarin, I am an escalation engineer in the Platforms Global Escalation Team. I would like to give some insight on NDIS. NDIS Introduction The Network Driver Interface Specification (NDIS) library abstracts the network hardware from network Read More...
Posted Friday, September 19, 2008 6:06 PM by ntdebug | 1 Comments
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Red alert! My Server is hung - what do I do?

So you have a dump from a hung server and you’re the first person on the scene. Your IT Manager is jumping up and down, the phone is ringing off the hook and people are hovering outside your cube. It’s game time and the pressure is on!!! Now what do you Read More...
Posted Friday, September 12, 2008 8:48 PM by ntdebug | 5 Comments
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Basics of Debugging Windows

Hello, this is East again. This blog post is about a topic that we always skip over when discussing debugging; what and where are the tools for debugging. I will touch on the different types of debuggers, loading symbols and the basics of getting started Read More...
Posted Thursday, August 28, 2008 10:45 PM by ntdebug | 8 Comments
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How to Access the User Mode Debugger from the Kernel Debugger

In certain cases you may want to use a user mode debugger to debug a process from within the kernel debugger. It could be that you have an application that loads a kernel mode driver, and you want to be able to debug the user mode aspect of the application Read More...
Posted Friday, August 08, 2008 8:58 PM by ntdebug | 4 Comments
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How can I find out why the Cluster Resource Monitor dumped – Access Violation

Hello, my name is John Marlin, and I am a Support Escalation Engineer on the Microsoft Platform Cluster Services Support team. I wanted to talk about the Windows 2003 Cluster Resource Monitor along with what happens when it crashes as well as how to debug Read More...
Posted Friday, August 01, 2008 7:40 PM by ntdebug | 3 Comments
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What Are the Odds?

Hi NTDebuggers, something rarely talked about are the odds of a problem being in one piece of code vs. another. From time to time we see some very strange debugs or symptoms reported by customers. The problems can be associated with anything from an internally Read More...
Posted Friday, July 25, 2008 8:44 PM by ntdebug | 2 Comments
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Data Execution Protection in action

Hello, my name is Graham, and I’m an escalation engineer on the Platforms Global Escalation Team. I recently worked a case where a group of Windows XP machines were hitting a bugcheck on boot, error 0xC000021A . This error occurs when a critical usermode Read More...
Posted Wednesday, July 23, 2008 8:20 PM by ntdebug | 5 Comments
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If Cluster is running fine, don’t dump cluadmin on a hang

Hello, my name is East, and I’m an Escalation Engineer on the Microsoft Platform Global Escalation Services team. Here are some tips for those wanting to review dumps from Cluster Administrator (Cluadmin.exe), the GUI version of cluster.exe that allows Read More...
Posted Thursday, July 10, 2008 8:21 PM by ntdebug | 3 Comments
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Windows Internals Beta Exam 71-660

Correction, Windows Internals Beta Exam 71-660 This was previously listed incorrectly as 70-660, the actual exam ID is now 71-660 Update 7-18-2008: The link to the exam preparation information has been updated below. Update 7-21-2008: When registering, Read More...
Posted Thursday, July 10, 2008 5:32 PM by ntdebug | 13 Comments

Tracking Down a Multi-Process Deadlock

Hello, my name is Louis Shanks and my story starts off with a tricky little deadlock issue that I worked on recently. Let me set the stage by explaining the surface level symptom, and then we will get to the good stuff. Randomly when users running Vista Read More...
Posted Tuesday, July 01, 2008 8:58 PM by ntdebug | 8 Comments
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