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Kernel: UNIX Time, Bluetooth Bug, Char/Misc and Intel

Submitted by Roy Schestowitz on Monday 19th of October 2020 03:02:31 PM Filed under
Linux

      

  • Linux 5.10 Solves the Year 2038 Problem Till Year 2486

    The Year 2000 problem was one of the most severe issues in programs of computerized systems that created havoc in computers and affecting systems worldwide. A little background on why this problem emerged — Ever noticed when a computer or a website asks you to enter the last two digits of the year?

    Computers are programmed to store only the last two digits of years because it saves storage space (Four digits Vs. Two digits). Say there’s only one day left in the year 1999 (99); a day later, the systems would fail to understand if it’s the Year 2000 (00) or 1900 (00).

  • Linux 5.9.1 And Older Stable Kernel Updates Fixing "Bleeding Tooth" Bluetooth Vulnerability Are Available - LinuxReviews

    BleedingTooth is a really bad and in theory very serious Linux kernel vulnerability. It allows someone within Bluetooth range to potentially execute code on your Linux machine thanks to a combination of improper input validation, improper buffer restrictions and improper access control in the BlueZ libraries and heap-based type confusion in the Linux kernel's L2CAP code. The practical threat isn't all that.

    Linux 5.9.1 as well as updates to the older "stable" kernel series (5.8.16, 5.4.72, 4.19.152, 4.14.202, 4.9.240, and 4.4.240) have been released with a patch by Intel's Luiz Augusto von Dentz addressing the Linux kernel side of the BleedingTooth vulnerability. You should upgrade to one of those if your machine has a Bluetooth adapter (most laptops do). 

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  • Char/Misc With Linux 5.10 Brings Nitro Enclaves, Alder Lake, More Code For Gaudi - Phoronix

    The "char/misc" area within the Linux kernel continues to have a bit of everything as the "catch all" pull request of the kernel not fitting into other existing subsystems. 

    [...]

    - Qualcomm's MHI bus added in Linux 5.7 supports more features with Linux 5.10 albeit mostly lower-level changes. 

    - The Intel-owned Habana Labs continues working extensively on their upstream kernel driver supporting their AI inference and training accelerators. With Linux 5.10 is a wide range of improvements to the Habana Labs kernel code largely on the Gaudi side. 

    - The SoundWire code has gained support for run-time power management, including within the Intel SoundWire support paths. The Intel code also adds multi-link support and other improvements. 

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  • Linux 5.10 Continues Bringing Up Support For Intel's Rocket Lake - Phoronix

    Building off Linux 5.9 that featured initial support for Gen12 graphics on next year's Rocket Lake desktop platform along with other early enablement for Rocket Lake like RAPL support and other PCI ID additions, that work has continued for the Linux 5.10 cycle. 

    The libata pull adds Rocket Lake PCH-H RAID PCI IDs as one of the additions. 

    There is also the platform-drivers-x86 work for Linux 5.10 where Rocket Lake support is added to the intel_pmc_core driver. 

    While the DRM code in Linux 5.9 brought initial support for Rocket Lake building off the existing Gen12 code, the DRM code for Linux 5.10 also has necessary code changes for properly driving displays with the hardware. 

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Relax, The Computing World Won’t End In 2038.

Submitted by Roy Schestowitz on Monday 19th of October 2020 03:12:54 PM.

  • Relax, The Computing World Won’t End In 2038. But 2486 Is Looking Grim

    A looming problem with Linux-based computers being unable to handle dates beyond the year 2038 appears to have been solved - or at least punted into the distant future.

    In a similar vein to the infamous Millennium Bug, where computers using two digits to denote years were unable to handle the fallover into the year 2000, Linux-based systems were facing a comparable issue on 03:14:07 UTC on January 19, 2038.

    This time the problem was being caused by Linux computers counting the time in seconds, starting from January 1, 1970. On that fateful date in January 2038, the number of seconds would have exceeded the value that could be stored in a single 32-bit integer, causing computers to lose track of time.

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