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  1. #1
    Just Joined!
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    Jan 2013
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    Trying to read Crash Dump on Freebsd 10.3-Release


    Hi,

    Ever since I've upgraded my FreeBSD, the machine will crash during startup displaying a kernel panic fault page which involves the WLAN network driver. I'm able to locate the vmcore.0 file but kgdb isn't able to successfully open the file with the error:
    Code:
    Cannot access memory at address 0x0
    I was in one of the compiled kernel and the command that produce this result was
    Code:
    kgdb kernel.debug /var/crash/vmcore.0
    Crash dump is enabled in the rc.conf file through the following variables
    Code:
    # Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable
    dumpdev="AUTO"
    dumpdir="/var/crash"
    I want to discuss this further if people have the time.

    Thanks.

  2. #2
    Just Joined! woodsmoke's Avatar
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    Hi
    thanks for the question.
    Maybe, don't know, this might be better asked at FreeBSD.
    wooddunnosmoke

  3. #3
    Linux Guru Rubberman's Avatar
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    I can be found either 40 miles west of Chicago, in Chicago, or in a galaxy far, far away.
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    14,038
    A seg-fault at address 0x0 basically means that something is trying to write to that memory address - not allowed! I agree with woodsmoke, contact the FreeBSD user forums for help!
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

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