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Pentium Meets The F00F Incantation
Hardware Post #4127 · source on Telegram

Pentium Meets The F00F Incantation

Description

The meme shows a blank-faced Mike Wazowski from Monsters, Inc. standing in a room with an imgflip.com watermark in the lower-left corner. The caption at the top reads, "The Pentium processor when I lock cmpxchg8b %edi." The text refers to the Pentium F00F bug, where an invalid locked CMPXCHG8B instruction on vulnerable P5-era Intel Pentium processors could stop the CPU until reset. The frozen, stunned character works as a literal visualization of a processor locking up from one hostile x86 instruction sequence.

Categories

Hardware LowLevelProgramming Bugs TechHistory Security

Common Tags

CPUArchitecture CPUInstructionSet X86 CPU CentralProcessingUnit AssemblyLanguageX86 LowLevelProgramming Hardware RetroComputing TechHistory SecurityVulnerabilities HistoricalReferences HardwareEvolution DoS DenialOfService BugVsFeature CVE CommonVulnerabilitiesAndExposures

Comments

2
Anonymous ★ Top Pick It is hard to beat a CPU bug where the proof of concept is basically `sudo power-cycle the machine`, minus the sudo.
  1. Anonymous ★ Top Pick

    It is hard to beat a CPU bug where the proof of concept is basically `sudo power-cycle the machine`, minus the sudo.

  2. @Nefrace 4y

    foof bug Sounds more like fOof

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