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Date: Thu, 23 Dec 1999 02:05:37 -0800 (PST)
From: mur@lynx.ru
To: freebsd-gnats-submit@freebsd.org
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Subject: kern/15644: Fatal trap 12: page fault while in kernel mode on 2.2-stable
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>Number:         15644
>Category:       kern
>Synopsis:       Fatal trap 12: page fault while in kernel mode on 2.2-stable
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Dec 23 02:10:02 PST 1999
>Closed-Date:
>Last-Modified:
>Originator:     Ilya V. Komarov
>Release:        2.2-stable
>Organization:
Lynx
>Environment:
FreeBSD nethub.lynx.ru 2.2.8-STABLE FreeBSD 2.2.8-STABLE #0: Fri Nov 26 21:35:15 MSK 1999 
root@nethub.lynx.ru:/usr/src/sys/compile/NS  i386
>Description:
spontaneous exit to kernel debuger with message:
___________________________________________________________________________________________
Nov 27 13:37:49 nethub /kernel: Fatal trap 12: page fault while in kernel mode
Nov 27 13:37:50 nethub /kernel: fault virtual address   = 0xf0f55005
Nov 27 13:37:50 nethub /kernel: fault code              = supervisor read, page not present
Nov 27 13:37:50 nethub /kernel: instruction pointer     = 0x8:0xf6ae07e5
Nov 27 13:37:50 nethub /kernel: stack pointer           = 0x10:0xf020cce0
Nov 27 13:37:51 nethub /kernel: frame pointer           = 0x10:0xf020cd0c
Nov 27 13:37:51 nethub /kernel: code segment            = base 0x0, limit 0xfffff, type 0x1b
Nov 27 13:37:51 nethub /kernel: = DPL 0, pres 1, def32 1, gran 1
Nov 27 13:37:51 nethub /kernel: processor eflags        = interrupt enabled, resume, IOPL = 0
Nov 27 13:37:51 nethub /kernel: current process         = Idle
Nov 27 13:37:52 nethub /kernel: interrupt mask          =
Nov 27 13:37:52 nethub /kernel:
Nov 27 13:37:52 nethub /kernel:
________________________________________________________________________

sometimes 'continue' command in KDB 
solve problem, sometimes only system reboot.
>How-To-Repeat:
non-periodic, ~ 1 in two weeks.
make world each month can't fix this bug.

>Fix:
can't fix.

>Release-Note:
>Audit-Trail:
>Unformatted:


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