![]() If parameter 3 indicates that this was an attempt to execute pageable code, then the IRQL is too high to call this function. Run at a lower IRQL, or allocate the data in the nonpaged pool. If !pool reports that parameter 1 is paged pool (or other types of pageable memory), then the IRQL is too high to access this data. If parameter 1 is less than 0x1000, the issue is likely a NULL pointer dereference. This is either a bad memory pointer or a pageability problem with the device driver code.įollowing are some general guidelines that you can use to categorize the type of coding error that caused the bug check: ![]() This bug check indicates that an attempt was made to access an invalid address while at a raised interrupt request level (IRQL). This bug check is usually caused by kernel-mode device drivers that use improper addresses. Use the ln (list nearest symbols) command on this address to see the name of the function. ![]() The instruction pointer at the time of the fault. Marking code as pageable when it must be non-pageable (for example, because the code acquires a spinlock, or is called in a deferred procedure call).Calling a function that cannot be called at DISPATCH_LEVEL while at DISPATCH_LEVEL.Note that bit 3 is only available on chipsets that support this level of reporting.Ġx0 - Fault trying to READ from the address in parameter 1.Ġx1 - Fault trying to WRITE to the address in parameter 1.Ġx8 - Fault trying to EXECUTE code from the address in parameter 1. These commands, may also be useful in gathering information about the failure: !pte, !address, and ln (list nearest symbols).Ģ: The IRQL was DISPATCH_LEVEL at the time of the fault.īit field that describes the operation that caused the fault. Use !pool on this address to see whether it's ![]() ![]() The virtual memory address that could not be accessed. IRQL_NOT_LESS_OR_EQUAL parameters Parameter If you are a customer who has received a blue screen error code while using your computer, see Troubleshoot blue screen errors. ![]()
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