Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

Discussion in 'Frontpage news' started by zero_cool, Jan 2, 2018.

  1. mbk1969

    mbk1969 Ancient Guru

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    Is it? I would assume that x79 platform would be listed like "Intel® Core™ X-series Processor Family for Intel® X79 platforms"
    like these two
    • Intel® Core™ X-series Processor Family for Intel® X99 platforms
    • Intel® Core™ X-series Processor Family for Intel® X299 platforms
    Did you mean that X79 platform processors were included in one of the "Nth generation Intel® Core™ processors" list items?
     
    Last edited: Jan 5, 2018
  2. Folken

    Folken Member

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    i9 7940x is safe?
     
  3. mbk1969

    mbk1969 Ancient Guru

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    Better assume that all Intel processors are not safe.
     
  4. sykozis

    sykozis Ancient Guru

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    The i7 4930K is not an "X-series" processor, which the "K" should make pretty damn obvious as all "X-series" processors have a name ending in "X". It's a 3rd Generation Core i7 processor that Intel chose to release on the "X79 Platform"

    The list of affected processors states very clearly...
    • Intel® Core™ X-series Processor Family for Intel® X299 platforms
    ...which would include any processor with a name designation ending with "X" that operates on the Intel X299 Platform.

    The early 45nm Atom processors actually are safe. They are "in-order" processors and as such, had no support to any extent for any form of branch prediction or speculation.
     

  5. mbk1969

    mbk1969 Ancient Guru

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    But do you think that 3960X, 3970X, 4960X are different from others for X79 platform? That "X" is just a marketing trick for "Extreme", not a mark of different architecture or something. ???
     
  6. tsunami231

    tsunami231 Ancient Guru

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  7. Sergio

    Sergio Master Guru

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    Hi swiSS. Left side is author's screenshot, i added my screenshot to the right side. And yes i am on win764, i7-4770k, Asus z87-Deluxe mainboard, and KB4056894 is installed with windows update.

    [ "Rogue data cache load" is Meltdown, "branch target injection" is one of two Spectre variants" ]

    "Rogue Data Cache Load" section > "Kernel VA Shadowing Enabled : YES" , so i am guessing my system is patched for Meltdown. But i have no idea why are those 3 options "With user pages.....", "With PCID support....", "With INVPCID support" are different than Author's screenshot...

    "Branch Target Injection" section "Branch Prediction Mitigation Enabled : NO" > "Disabled due to hardware support : YES", so i am guessing i need bios/uefi update or some other things for Spectre.
     
  8. tsunami231

    tsunami231 Ancient Guru

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    went to install MS one to check and it wont install ps one to check
     
  9. Sergio

    Sergio Master Guru

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    Hi tsunami231. If i am not wrong, this tool (intel-SA-00086 Detection Tool) is not about latest CVE-2017-5715 (Spectre) or CVE-2017-5754 (Meltdown), there is no Detection Tool for those yet from microsoft if i am not wrong. It is for "Intel Management Engine Critical Firmware Update (Intel-SA-00086). So please make sure your system get the latest critical windows updates. KB4056894 if you are on win7 and no idea Win10, Win8.1 KB versions. Pls google them.

    But there is a script you can use to check them >>> https://github.com/ionescu007/SpecuCheck , >>> https://github.com/ionescu007/SpecuCheck/releases .
    Download Latest "SpecuCheck.exe" file from that link and put it to C main HDD, like C:\SpecuCheck.exe ... Than open a command prompt and type SpecuCheck.exe and press Enter. See the results.

    If "Rogue Data Cache Load" section > "Kernel VA Shadowing Enabled" says "NO" than your system is not patched for Meltdown. So try to update it with windows update. I am not sure manual update method, cause i am told not to manualy update them.

    If your Windows Update is not giving/pushing any updates for meltdown, its because of your antivirus/antimalware program is not ready for this. If you edit your Regedit manualy for activating those KB windows updates, it can cause BSODs and maybe you can't get back in to windows. There are BSOD reports. So be careful on those. Try to get updates from windows update.

    BSOD reports :
    1. AMD CPU and Windows 7 Pro x86. MSE, key in registry present. BSOD after install of kb4056894.
    2. AMD CPU and Windows 7 Pro x64. 360 TSE, key in registry added manually. Normal boot after install of kb4056894.
    another BSOD, https://forums.mydigitallife.net/threads/windows-7-hotfix-repository.19461/page-508#post-1401816

    Anyways, i am really stressed and tired here, need to rest. Laters.
     
    Last edited: Jan 5, 2018
  10. tsunami231

    tsunami231 Ancient Guru

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    ok i got it to work i had reinstall powershell cause from some reason any time i ran the command

    Install-Module SpeculationControl
    powershell opened up a "open with" window

    so i ran
    Install-Module –Name PowerShellGet –Force
    then ran

    Install-Module SpeculationControl
    clicked yes to stuff then ran

    then ran
    Get-SpeculationControlSettings

    Code:
    Windows PowerShell
    Copyright (C) 2016 Microsoft Corporation. All rights reserved.
    
    PS C:\Windows\system32> Get-SpeculationControlSettings
    Speculation control settings for CVE-2017-5715 [branch target injection]
    
    Hardware support for branch target injection mitigation is present: False
    Windows OS support for branch target injection mitigation is present: False
    Windows OS support for branch target injection mitigation is enabled: False
    
    Speculation control settings for CVE-2017-5754 [rogue data cache load]
    
    Hardware requires kernel VA shadowing: True
    Windows OS support for kernel VA shadow is present: False
    Windows OS support for kernel VA shadow is enabled: False
    
    Suggested actions
    
     * Install BIOS/firmware update provided by your device OEM that enables hardware sup
    n mitigation.
     * Install the latest available updates for Windows with support for speculation cont
     * Follow the guidance for enabling Windows support for speculation control mitigatio
    .microsoft.com/help/4072698
    
    
    BTIHardwarePresent             : False
    BTIWindowsSupportPresent       : False
    BTIWindowsSupportEnabled       : False
    BTIDisabledBySystemPolicy      : False
    BTIDisabledByNoHardwareSupport : False
    KVAShadowRequired              : True
    KVAShadowWindowsSupportPresent : False
    KVAShadowWindowsSupportEnabled : False
    KVAShadowPcidEnabled           : False
    
    
    
    looks super promising MS has not pushed the patch to me I still running 1703 the January cumulative patch has not been pushed to my system yet i hasnt been pushed to my other system, and i not gona force updates, I did hot fix fw for MEI on my mobo only
     
    Last edited: Jan 5, 2018

  11. sykozis

    sykozis Ancient Guru

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    Core i7 4930K is an Ivy Bridge based processor, same as i7 4960X. The architectures are the same. The "K" and "X" designations denote the ability to overclock. Intel could have simplified the list but chose not to. Of course, by naming, the i7 4930K is a "K-series" processor, but on ARC, Intel does list it as an "X-series" processor. Part of Intel's stupid ass naming scheme that makes no sense.
     
    mbk1969 likes this.
  12. Sergio

    Sergio Master Guru

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    Hi Tsunami231, here is mine for comparison.
    [​IMG]

    This is SO confusing!!! Now windows update want me to install the same KB4056894 again!!! WTH!
    >>> https://i.imgur.com/YIWGHGU.png This is giving me huge anxiety!
    Here after restart , 2nd time installed >>> https://i.imgur.com/AG45V5O.png
     
    Last edited: Jan 5, 2018
  13. venturi

    venturi Master Guru

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    again, there should be no performance impact from a fix. Not even 1%. The purchase of the processor brought an expectation with it

    And just as important:

    Patching should b a choice
     
    Last edited: Jan 5, 2018
  14. Sergio

    Sergio Master Guru

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  15. Xul Aethyr

    Xul Aethyr Active Member

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    got the windows patch, no performance change in a few benches on my 7700k so far, ill try games now
     

  16. user1

    user1 Ancient Guru

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  17. tsunami231

    tsunami231 Ancient Guru

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    I will just wait for the update to see what happen
     
  18. sykozis

    sykozis Ancient Guru

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    It's not just a single kernel patch. You also need updated BIOS/UEFI and updates to various software, like web browsers.

    When the "fix" directly affects a function that exists to improve performance, there will be an impact.
     
  19. user1

    user1 Ancient Guru

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    Could it be 2018 is the year powerpc becomes relevant again ? lol
     
  20. southamptonfc

    southamptonfc Ancient Guru

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    I'm seriously worried how the patches will affect performance of the product I work on, which uses Docker containers based on Ubuntu. Next week we'll be doing a lot of regression testing!
     

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