Comment on First time correlating a crash to a CME (probably Bit-Flip/SEU)

Shdwdrgn@mander.xyz ⁨1⁩ ⁨year⁩ ago

• SheeEttin@lemmy.world ⁨1⁩ ⁨year⁩ ago

  In memory?

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  • Shdwdrgn@mander.xyz ⁨1⁩ ⁨year⁩ ago

    Oh! I thought OP was referencing OS files from the drive.

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  • nexusband@lemmy.world ⁨1⁩ ⁨year⁩ ago

    It also wouldn’t cause Hard-Locks and Freezes without any errors

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    • SheeEttin@lemmy.world ⁨1⁩ ⁨year⁩ ago

      It certainly could. A bit-flip in a core part of the kernel could easily cause it to lock up, if an address is corrupted and it starts writing garbage over its code, or execution jumps to somewhere unexpected, or an instruction is changed from something reasonable to a halt.

      Yes, most of those should trigger a blue screen or kernel panic, but that’s not guaranteed when you’re making completely random changes.

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      • nexusband@lemmy.world ⁨1⁩ ⁨year⁩ ago

        Sure - i should have mentioned, that the system itself runs not on the ZFS but from it’s own SSD. So a “ZFS Cache in Memory Bit-Flip” should (theoretically…) not cause a hard-lock/freeze. It would probably trigger a complete garbage collection though.

        And yes - that’s what was so confusing to me, no kernel panic, no log entry…nothing, just a sudden, random freeze.

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• nexusband@lemmy.world ⁨1⁩ ⁨year⁩ ago

  It probably did - but that’s not why the server crashed :)

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