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The following suggestions are specific to Stop 0x1E errors . For additional troubleshooting suggestions that apply to all Stop errors, see the section titled Stop Message Checklist later in this chapter .
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Common Stop Messages CHapTER 32
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Stop 0x1E messages typically occur after you install faulty drivers or system services, or they can indicate hardware problems, such as memory and interrupt request (IRQ) conflicts . If a Stop message lists a driver by name, disable, remove, or roll back that driver to correct the problem . If disabling or removing applications and drivers resolves the issue, contact the hardware manufacturer about a possible update . Using updated software is especially important for multimedia applications, antivirus scanners, and CD mastering tools . If the Stop message mentions the file Win32k .sys, the source of the error might be a third-party remote control program . If such software is installed, you might be able to disable it by starting the system in safe mode . If not, use Startup Repair to manually delete the system service file that is causing the problem . For more information about safe mode and Startup Repair, see 29 . Problems can result from system firmware incompatibilities . You can resolve many Advanced Configuration and Power Interface (ACPI) issues by updating to the latest firmware . Other possible causes include insufficient disk space while installing applications or performing certain functions that require more memory . You can free up space by deleting unneeded files . Use Disk Cleanup to increase available disk space . For more information about Disk Cleanup, see 30 . The problem might be due to a memory leak caused by an application or service that is not releasing memory correctly . Poolmon (Poolmon .exe) helps you to isolate the features that are causing kernel memory leaks . For more information about troubleshooting memory leaks, see Knowledge Base articles 177415, How to Use Memory Pool Monitor (Poolmon .exe) to Troubleshoot Kernel Mode Memory Leaks, at http://support.microsoft.com/kb/177415 and 298102, How to Find Pool Tags That Are Used by Third-Party Drivers, at http://support.microsoft.com/kb/298102 .
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To find additional articles, search using the keywords poolmon, pool tag,
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pooltag, and memory leak. For more information about Stop 0x1E messages, see the Knowledge Base at http://support.microsoft.com/. Search the Knowledge Base using the keyword 0x1E.
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Understanding Kernel Stack Overflows
Omer amin, Escalation Engineer
Microsoft Global Escalation Services Team
ernel stack overflows are a common error in many cases reported to us by customers. These are caused by drivers taking up too much space on the kernel
stack. This results in a kernel stack overflow, which will then crash the system with one of the following bugchecks:
STOp 0x7F: UNEXpECTED_KERNEL_MODE_TRap with parameter 1 set to EXCEpTION_DOUBLE_FaULT, which is caused by running off the end of a kernel stack. STOp 0x1E: KMODE_EXCEpTION_NOT_HaNDLED, 0x7E: SYSTEM_THREaD_ EXCEpTION_NOT_HaNDLED, or 0x8E: KERNEL_MODE_EXCEpTION_NOT_ HaNDLED, with an exception code of STaTUS_aCCESS_VIOLaTION, which indicates a memory access violation. STOp 0x2B: paNIC_STaCK_SWITCH, which usually occurs when a kernel-mode driver uses too much stack space.
Each thread in the system is allocated with a kernel mode stack. Code running on any kernel-mode thread (whether it is a system thread or a thread created by a driver) uses that thread s kernel-mode stack unless the code is a deferred procedure call (DpC), in which case it uses the processor s DpC stack on certain platforms. The stack grows negatively. This means that the beginning (bottom) of the stack has a higher address than the end (top) of the stack. For example, let s say the beginning of your stack is 0x80f1000, and this is where your stack pointer (ESp) is pointing. If you push a DWORD value onto the stack, its address would be 0x80f0ffc. The next DWORD value would be stored at 0x80f0ff8 and so on up to the limit (top) of the allocated stack. The top of the stack is bordered by a guard page to detect overruns. The size of the kernel-mode stack varies among different hardware platforms. For example, on 32-bit platforms, the kernel-mode stack is 12 KB, and on 64-bit platforms, the kernel-mode stack is 24 KB. The stack sizes are hard limits that are imposed by the system, and all drivers need to use space conservatively so that they can coexist. When we reach the top of the stack, one more push instruction is going to cause an exception, which in turn can lead to a Stop error. This could be either a simple push instruction or something along the lines of a call instruction that also pushes the return address onto the stack.
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