X64 Exception Type 0x12 Machinecheck Exception Link Official

journalctl -k | grep -i "machine check"

: Outdated BIOS or microcode that cannot properly manage hardware power transitions or communication. Hewlett Packard Enterprise Community Immediate Troubleshooting Steps x64 Exception type 0x12 in ProLiant DL380 Gen10 Server

In the Intel and AMD x64 Machine Check Architecture (MCA), exception vector 18 (which translates to hexadecimal ) is reserved explicitly for the Machine Check Exception ( #MC ).

HARDWARE ERROR. This is not a software issue. CPU 0 BANK 3 MCG status: MCi_STATUS=0xbc000e000f000315 MCE: 0x12 MISC: 0x86 ADDR: 0x7fb3c0000 TIME: 1703000000 LINK: 0x1 (Interconnect: UPI Link 0) x64 exception type 0x12 machinecheck exception link

When software diagnostics point to a specific component but don't provide definitive proof, hardware swapping is the most effective diagnostic method:

A typical Linux MCE log entry might look like:

The most common resolution is updating the system firmware. For HPE servers, this involves downloading the latest . Ensure all firmware components (BIOS, ILO, NICs) are updated to the latest versions. 2. Switch from Legacy to UEFI Boot Mode journalctl -k | grep -i "machine check" :

In the x64 architecture (the 64-bit extension of x86), exceptions are numbered from 0 to 255. These are interrupts raised by the CPU when an unusual condition occurs. Standard exceptions include:

References: Intel SDM Vol. 3 (Chapter 15 – Machine-Check Architecture), AMD APM Vol. 2 (Section 8.2 – Machine Check Exception), Linux kernel documentation on MCA (Documentation/x86/x86_64/machinecheck.rst).

Ask: Does the crash happen only when:

The consequences of an exception type 0x12 can vary depending on the severity of the error and the action taken by the handler routine. In some cases, the exception may be benign and can be handled by the operating system or the application without any significant impact on the program. However, in other cases, the exception may be severe and can cause:

Unstable overclocking, incompatible XMP profiles, or corrupted BIOS/firmware. Common Scenarios and Systems Affected

Internal processor errors, memory failures (ECC couldn't handle bit flips), or system bus errors. This is not a software issue