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Intel's Skylake and Kaby Lake CPUs Have Nasty Microcode Bug

posted by takyon on Monday June 26 2017, @09:35PM   Printer-friendly
from the skylake-axed dept.

"exec" writes:

Arthur T Knackerbracket has found the following story:

During April and May, Intel started updating processor documentation with a new errata note, and over the weekend we learned why: Skylake and Kaby Lake silicon has a microcode bug.

The errata is described in detail on the Debian mailing list, and affects Skylake and Kaby Lake Intel Core processors (in desktop, high-end desktop, embedded and mobile platforms), Xeon v5 and v6 server processors, and some Pentium models.

The Debian advisory says affected users need to disable hyper-threading "immediately" in their BIOS or UEFI settings, because the processors can "dangerously misbehave when hyper-threading is enabled."

Symptoms can include "application and system misbehaviour, data corruption, and data loss".

Henrique de Moraes Holschuh, who authored the Debian post, notes that all operating systems, not only Linux, are subject to the bug.

Also at Tom's Hardware and Ars Technica.

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  • (Score: 0) by Anonymous Coward on Tuesday June 27 2017, @12:56PM

    by Anonymous Coward on Tuesday June 27 2017, @12:56PM (#531886)

    for "kaby lake(gen7)" (and "skylake"(gen6)) there's a nice document from intel listing all "errata".
    also the affected CPUs are listed by name (and stepping).
    other then that, thanks for scaring people into sending AMD their moneys : D