RE: Sudden and unexplained reboots

From: Noor Dawod (noor_at_comrax.com)
Date: 06/05/03

  • Next message: James Long: "Re: Sudden and unexplained reboots" 
    Date: Thu, 05 Jun 2003 06:37:55 +0200
To: freebsd-stable@freebsd.org

    Folks,

    After spending like an hour next to the server itself, I saw it crash
    with a 'page fault' panic. All speculations about fans and CPU
    over-heating is irrelevant as the server's cooling infrastructure is
    working perfectly (2 fans for CPU, 2 fans for disks, 2 external fans, 2
    fans for the power supplies, and all are working.)

    The panic's details are as follows:

    Fatal trap 12 = page fault while in kernel mode
    fault virtual address = 0xbfc407fc
    fault code = supervisor write, page not present
    instruction pointer = 0x8:0xc021d5e3
    stack pointer = 0x10:0xfbf8ae20
    frame pointer = 0x10:0xfbf8ae2c
    code segment = base 0x0, limit 0xfffff, type 0x1b
                              DPL 0, pres 1, def32 1, gran 1
    processor eflags = interrupt enabled, resume, IOPL = 0
    current process = 45671 (ftpd)
    interrupt mask = none
    trap number = 12
    panic = page fault

    syncing disks... 56 2
    Done
    Uptime: 51m35s

    Anyone knows what the hell is going on?
    By the way, is there a way to dump the panic's message to disk
    automatically when a panic occurs? Is there a log somewhere when a panic
    occurs?

    /Noor

    | -----Original Message-----
    | From: Charles Sprickman [mailto:spork@inch.com]
    | Sent: Wednesday, June 04, 2003 10:21 PM
    | To: Don Lewis
    | Cc: bmilekic@unixdaemons.com; freebsd-stable@freebsd.org;
    | noor@comrax.com
    | Subject: Re: Sudden and unexplained reboots
    |
    |
    | On Wed, 4 Jun 2003, Don Lewis wrote:
    |
    | > I'd also check to make sure that all the fans are operational and
    | > something isn't overheating.
    |
    | I ran into two boxes with the same bad CPU fans. Took a
    | while to track it down. Symptoms were seemingly random
    | reboots, but the reboots could be made to happen more often
    | if the box was loaded up. If your BIOS has hardware
    | monitoring, check the CPU fan RPMs there as well; one box had
    | a fan that was spinning, but only at about 1000 RPM, which
    | was not enough to keep the CPU in spec.
    |
    | Charles
    |
    | > _______________________________________________
    | > freebsd-stable@freebsd.org mailing list
    | > http://lists.freebsd.org/mailman/listinfo/freebsd-stable
    | > To unsubscribe, send any mail to
    | > "freebsd-stable-unsubscribe@freebsd.org"
    | >
    |

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  • Next message: James Long: "Re: Sudden and unexplained reboots"

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