Windows 8 and 8.1 Forums


BSOD - Random apc-index _mismatch

  1. #1


    Posts : 19
    Windows 8.1 Pro

    BSOD - Random apc-index _mismatch


    Hi there

    I have a pc that is Windows 8.1 Professional and it is getting regular random blue screens (sad face).
    When I look at BluescreenView it shows several APC_INDEX_MISMATCH and is saying driver issue is related to ntoskrnl.exe

    I have a feeling it could be memory related but not 100& sure.

    I would be very grateful if you could take a look at the log files attached and let me know what you think might be causing the issue?

    Thanks
    PCTS

      My System SpecsSystem Spec

  2. #2


    Code:
    3: kd> .bugcheck
    Bugcheck code 00000001
    Arguments 00007ff8`b7650e4a 00000000`00000000 00000000`0000fffe ffffd000`216edb00
    
    3: kd> kn
     # Child-SP          RetAddr           Call Site
    00 ffffd000`216ed8c8 fffff801`02bdc4e9 nt!KeBugCheckEx
    01 ffffd000`216ed8d0 fffff801`02bdc406 nt!KiBugCheckDispatch+0x69
    02 ffffd000`216eda10 00007ff8`b7650e4a nt!KiSystemServiceExit+0x24b
    03 00000000`1d82eaa8 00000000`00000000 0x00007ff8`b7650e4a
    
       +0x1e4 KernelApcDisable : ??
       +0x1e6 SpecialApcDisable : ??
       +0x1e4 CombinedApcDisable : ??
    Doesn't look like a memory issue, it looks like a driver bug, there's been a mismatch of APCs being disabled and enabled.
    Enable Driver Verifier, that should find the culprit.
    Either that, or provide a Kernel memory dump from C:\Windows\MEMORY.dmp.
      My System SpecsSystem Spec

  3. #3


    Posts : 19
    Windows 8.1 Pro


    Hi Mysers Briggs

    Thanks for assisting with this and reviewing the log files. What procedure do you recommend for executing Driver Verifier?

    We have a MEMORY DMP file in C:\windows but it is approx 650MB. I have zipped it to 120MB approx. I can upload to Dropbox and provide a link if it would help in identifying the issue also?

    Thanks
    PCTS
      My System SpecsSystem Spec

  4. #4
      My System SpecsSystem Spec

  5. #5


    Posts : 19
    Windows 8.1 Pro


    Hi again

    Here is the dump file
    https://www.dropbox.com/s/9015pxh6pe...EMORY.zip?dl=0

    Thanks again for your assistance
    PCTS
      My System SpecsSystem Spec

  6. #6


    Posts : 19
    Windows 8.1 Pro


    Hi again Myser Briggs

    Here are 3 sets of collection logs (2 set of logs which had driver verifier turned on and 2 bluescreens happened), one set of logs after driver verifier was turned off. Not sure if you need this last set.

    https://dl.dropboxusercontent.com/u/...erTurnedOn.zip
    https://dl.dropboxusercontent.com/u/...erTurnedOn.zip
    https://dl.dropboxusercontent.com/u/...rTurnedOff.zip

    Let me know what you think
    Thanks
    PCTS
      My System SpecsSystem Spec

  7. #7


    To be honest, this kernel memory dump isn't much help, nor are the verifier enabled crashes.
    We'll need a complete memory dump, if you don't mind, which will be very large.

    Go the Start
    Right click My Computer
    Select Properties
    Click Advanced system settings
    Click on the Advanced tab
    Select Settings under Startup and Recovery
    Then under Write debugging information select Complete memory dump.

    Once a dump is created go to:
    C:/Windows/memory.dmp
    Copy the file to the desktop, zip it up and upload it to a file sharing site like Onedrive. After the upload is done post the download link in your next reply.
      My System SpecsSystem Spec

  8. #8


    Posts : 19
    Windows 8.1 Pro


    Hi there Mysers Briggs

    Thanks for the update. I have uploaded a 600MB complete memory dump yesterday. See 2nd last post. Zipped it is 120MB.
    Is that of any help?

    If its not suitable, do I need to wait till the next BSOD and then upload the complete memory dump? Do I also need to re-enable driver verifier since I stopped it after the last BSOD?

    Thanks
    PCTS
      My System SpecsSystem Spec

  9. #9


    That's a Kernel memory dump, they're quite a lot smaller.
    You'll need to wait for a new crash for a complete memory dump to overwrite it.
    No, you can leave driver verifier disabled, it's of no use.
      My System SpecsSystem Spec

  10. #10


    Posts : 19
    Windows 8.1 Pro


    Hi there Mysers Briggs

    Please find attached memory dump
    https://www.dropbox.com/s/ahi0cim4ze...32015.zip?dl=0

    Let me know what you think and thank you again for your assistance.

    Thanks
    PCTS
      My System SpecsSystem Spec

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