Date: Fri, 16 Feb 2001 07:21:30 -0800 (PST) From: lenz@heitec.net To: freebsd-gnats-submit@FreeBSD.org Subject: kern/25136: Fatal trap 12: page fault while in kernel mode Message-ID: <200102161521.f1GFLUj16104@freefall.freebsd.org>
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>Number: 25136
>Category: kern
>Synopsis: Fatal trap 12: page fault while in kernel mode
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Feb 16 07:30:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: Lenz Gschwendtner
>Release: 4.2 Stable after jaunary 2000
>Organization:
>Environment:
FreeBSD tashi 4.2-STABLE FreeBSD 4.2-STABLE #1: Fri Feb 16 09:25:39 CET 2001
lenz@heitec.net:/usr/src/sys/compile/TASHI i386
>Description:
Since i've updated my system yesterday from 4.2 Stable january 31. my
Adaptec 3940auw(Dual Channel / Bios Ver. 2.11.0) causes a fatal trap 12 while booting.
if the Controller is not in the system, or i replace it with another
Adaptec Controller(2940uw tested) there is no problem. also with the
old kernel i can boot without problem. We tested finally with an IDE hd
and no scsi devices connected to the controller.
in the kernel script the following stuff is defined:
- pci
- ahc
- da
- scbus
- pass
the trap message is:
fault virtual address = 0x123
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc012de26
stack pointer = 0x10:0xc0293a8c
frame pointer = 0x10:0xc0293ab4
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 = 0 (swapper)
interrupt mask = cam
trap number = 12
panic: page fault
all this happens when normally this message is shown:
waiting 2 seconds for SCSI devices to settle
>How-To-Repeat:
put a Adaptec 3940auw controller in your system, update and reboot
>Fix:
use an other controller :(
>Release-Note:
>Audit-Trail:
>Unformatted:
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