Triggered when the CPU identifies a failure it cannot correct itself, such as a parity error or a thermal trip.
When an MCE occurs, the processor saves the current state and transfers control to the MCE handler. The MCE handler can then analyze the error condition and take corrective action, such as logging the error, notifying the operating system, or even triggering a system reset. x64 exception type 0x12 machinecheck exception link
The x64 Exception Type 0x12, or Machine Check Exception (#MC), is a critical, often fatal, hardware-level error indicating a failure in the CPU, memory, or PCIe bus. Troubleshooting typically involves updating BIOS/firmware, reverting overclocks, and reviewing system logs via HPE iLO or Windows Event Viewer. Detailed troubleshooting steps for HPE ProLiant servers are available at HPE Community . Advisory: Apollo 6500 Gen10 - HPE Support Triggered when the CPU identifies a failure it
The server room hummed with the steady drone of a hundred ProLiant DL380 Gen10 units. For Elias, the lead systems architect, it was a typical Tuesday until the monitoring wall flashed a blinding crimson. One of the core nodes had flatlined into a "Red Screen of Death". The x64 Exception Type 0x12, or Machine Check
WHEA_UNCORRECTABLE_ERROR (124) A fatal hardware error has occurred. Parameter 1: Bank number (0x3) Parameter 2: MCi_STATUS = 0xfe000000000c0f35 Parameter 3: MCi_ADDR = 0x1a3f0000 **Link: UPI Link 1 - Poisoned packet**
When you see Exception 0x12, immediately capture the following from your system logs (via dmesg on Linux or WinDbg on Windows):
The Machine Check Exception (MCE) is a special type of exception that occurs when the processor detects a hardware error. This could range from correctable and uncorrectable memory errors to internal processor errors. When an MCE occurs, the processor saves its state and invokes a handler to deal with the error.