X64 Exception Type 0x12 Machinecheck Exception Link 🎉

The UC (Uncorrected) flag in the MCi_STATUS register indicates whether the error was corrected automatically by the processor. If this flag is set, it means the error was uncorrectable and the system had no choice but to halt.

Direct reference: The official Intel Software Developer’s Manual (SDM) Volume 3, Chapter 15 (Machine-Check Architecture) is the definitive source. AMD users refer to the AMD64 Architecture Programmer’s Manual Volume 2, Section 7.8.

After an MCE, the OS reads these banks to determine the fault source. x64 exception type 0x12 machinecheck exception link

CPU overheating, causing the processor to shut down or trigger an exception to prevent permanent damage.

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. The UC (Uncorrected) flag in the MCi_STATUS register

(if you share the model).

In the world of high-performance computing, the —better known as a Machine Check Exception (MCE) —is the digital equivalent of a "check engine" light for a server's most critical components. The Incident at DataCore AMD users refer to the AMD64 Architecture Programmer’s

Enterprise platforms will record the exact machine check parameters into hardware event logs. Check the via the iLO interface. Look for the hexadecimal registers provided in the crash message:

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x64 exception type 0x12 machinecheck exception link
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