Re: [4.8-RELEASE - Stable, 5.1-RELEASE] Panics when system loaded

From: Andrew Kinney (andykinney_at_advantagecom.net)
Date: 10/27/03

  • Next message: Wes Peters: "Re: non-root process and PID files" 
    To: "Jaco van Tonder" <jacovt@cscrsa.com>, freebsd-hackers@freebsd.org
Date: Mon, 27 Oct 2003 11:02:17 -0800

    On 27 Oct 2003 at 13:08, Jaco van Tonder wrote:

    > buildworld and my machine panicked. Tried a few more times with random
    > panics. Same random panics occur if I build the kernel. After a bit of
    > struggling I managed to get a GENERIC kernel built with debug symbols
    > on the latest source. I did not manage to build or install world on
    > the new sources, but the panics happen regardless of what kernel is
    > running.
    >

    Last time we had random trap 12 panics, it was because we had
    some bad RAM. The RAM wasn't bad enough to fail post, but it did
    occasionally flip bits on the data registers of one of the chips. Not all
    RAM test software can catch that, but the Dell diagnostic software
    did.

    Of course the same thing can happen if your BIOS has overly
    aggressive RAM timings set.

    Since your problems occurred regardless of the kernel, it would
    certainly imply a hardware problem.

    Sincerely,
    Andrew Kinney
    President and
    Chief Technology Officer
    Advantagecom Networks, Inc.
    http://www.advantagecom.net

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