kern/58947: Random Kernel Crash

[John Gillis]

>Number:         58947
>Category:       kern
>Synopsis:       Random Kernel Crash
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Nov 04 19:30:10 PST 2003
>Closed-Date:
>Last-Modified:
>Originator:     John Gillis
>Release:        FreeBSD 4.9-STABLE i386
>Organization:
>Environment:
System: FreeBSD boobookittyfuck.zefram.net 4.9-STABLE FreeBSD 4.9-STABLE #0: Sun Nov 2 16:18:26 EST 2003 zefram at boobookittyfuck.zefram.net:/usr/obj/usr/src/sys/BOOBOOKITTYFUCK i386
AMD XP2000+ on ASUS board. With X, KDE, and many many other libs. I keep in sync with FreeBSD-STABLE, as you can see, and last compiled 
11/2/2003 @ 4pm.. I had CVSup'd just before compiling.

	
>Description:
Computer just locked up, and I got this error message in /v/l/messages. Also checked out the function that it was in.. Here's that info:

Nov  4 21:21:48 boobookittyfuck /kernel: Fatal trap 12: page fault while in kernel mode
Nov  4 21:21:48 boobookittyfuck /kernel: fault virtual address  = 0x54415008
Nov  4 21:21:48 boobookittyfuck /kernel: fault code             = supervisor write, page not present
Nov  4 21:21:48 boobookittyfuck /kernel: instruction pointer    = 0x8:0xc028d26d
Nov  4 21:21:48 boobookittyfuck /kernel: stack pointer          = 0x10:0xe0619d54
Nov  4 21:21:48 boobookittyfuck /kernel: frame pointer          = 0x10:0xe0619d5c
Nov  4 21:21:48 boobookittyfuck /kernel: code segment           = base 0x0, limit 0xfffff, type 0x1b
Nov  4 21:21:48 boobookittyfuck /kernel: = DPL 0, pres 1, def32 1, gran 1
Nov  4 21:21:48 boobookittyfuck /kernel: processor eflags       = interrupt enabled, resume, IOPL = 0
Nov  4 21:21:48 boobookittyfuck /kernel: current process                = 56828 (atrun)
Nov  4 21:21:48 boobookittyfuck /kernel: interrupt mask         = none
Nov  4 21:21:48 boobookittyfuck /kernel: trap number            = 12
Nov  4 21:21:48 boobookittyfuck /kernel: panic: page fault
Nov  4 21:21:48 boobookittyfuck /kernel:
Nov  4 21:21:48 boobookittyfuck /kernel: syncing disks... 4


> nm -n /kernel | grep c028d2
c028d23c T user_ldt_free
c028d2a0 t i386_get_ldt
	
>How-To-Repeat:
Not sure, first time it's happened. I'll keep my eye out for the same problem, and compile a debugging kernel upon request.

	
>Fix:

	


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