Re: unexpected panic in idle process (RELENG_5 2005/04/25UTC)

From: Adrian Steinmann (ast_at_marabu.ch)
Date: 05/09/05

  • Next message: Jonathan Noack: "Re: Performance issue" 
    Date: Mon,  9 May 2005 20:52:21 +0200
To: Doug White <dwhite@gumbysoft.com>

    On Thu, 28 Apr 2005, I wrote:
    > Fatal trap 9: general protection fault while in kernel mode
    > instruction pointer = 0x8:0xc05e8ca2
    > stack pointer = 0x10:0xc7499d10
    > frame pointer = 0x10:0xc7499d10
    > 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 = 11 (idle)
    > [thread pid 11 tid 100003 ]
    > Stopped at cpu_idle_default+0x5: leave

    and Doug White <dwhite@gumbysoft.com> answered on Sun, 8 May 2005:
       This is an odd one; the IA32 manual doesn't say you can take a GPF from a
       LEAVE instruction in protected mode. %ebp looks correct so I'd wonder if
       you have cooling problems or a bad processor.

    Yes, odd, but maybe there is a simpler explanation: I have DDB
    enabled, and the serial console may have sent a spurious break.
    After nobody suggested any smart commands for db> I issued a "c"
    and tadda, the system was back (albeit with the wrong time). So
    this may be a red herring.

    Thanks for the analysis.

    Adrian

    _______________________________________________
    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"

  • Next message: Jonathan Noack: "Re: Performance issue"