Bug 15644

Summary: Fatal trap 12: page fault while in kernel mode on 2.2-stable
Product: Base System Reporter: mur <mur>
Component: kernAssignee: Alfred Perlstein <alfred>
Status: Closed FIXED    
Severity: Affects Only Me    
Priority: Normal    
Version: Unspecified   
Hardware: Any   
OS: Any   

Description mur 1999-12-23 10:10:02 UTC 
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 rx0, 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.

Fix: 

can't fix.
How-To-Repeat: non-periodic, ~ 1 in two weeks.
make world each month can't fix this bug.
Comment 1 Alfred Perlstein freebsd_committer freebsd_triage 2000-06-06 10:29:23 UTC 
State Changed
From-To: open->feedback

please see http://www.freebsd.org/handbook/kerneldebug.html and get 
me a traceback to have this problem addressed or the PR will be closed.
Comment 2 Alfred Perlstein freebsd_committer freebsd_triage 2000-06-06 10:29:23 UTC 
Responsible Changed
From-To: freebsd-bugs->alfred

I'm taking care of this.
Comment 3 Alfred Perlstein freebsd_committer freebsd_triage 2000-06-26 19:38:30 UTC 
State Changed
From-To: feedback->closed

no feedback, no similar problems reported.