Date: Tue, 30 Jan 2001 08:19:43 -0800 (PST) From: paulsen@orbiteam.de To: freebsd-gnats-submit@FreeBSD.org Subject: kern/24739: "kldunload ipf" kernel module (V3.4.16) crashs freebsd Message-ID: <200101301619.f0UGJhc96262@freefall.freebsd.org>
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>Number: 24739
>Category: kern
>Synopsis: "kldunload ipf" kernel module (V3.4.16) crashs freebsd
>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 Jan 30 08:20:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator: Volker Paulsen
>Release: 4.2-STABLE
>Organization:
OrbiTeam Software GmbH
>Environment:
FreeBSD ns.orbiteam.de 4.2-STABLE FreeBSD 4.2-STABLE #0: Tue Jan 16 14:22:47 CET 2001 root@ns.orbiteam.de:/usr/obj/usr/src/sys/ORBI-NS i386
>Description:
Unloading the dynamic kernel module of ipfilter 3.4.16 causes a kernel
panic:
Jan 29 14:06:03 ns /kernel: IP Filter: v3.4.16 unloaded
Jan 29 14:08:29 ns /kernel: Copyright (c) 1992-2001 The FreeBSD Project.
root@ns 16:55 [crash] gdb -k kernel.0 vmcore.0
...
IdlePTD 3985408
initial pcb at 321d40
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x10
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc018fbb3
stack pointer = 0x10:0xccc52da4
frame pointer = 0x10:0xccc52dc4
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 = 59 (ipmon)
interrupt mask = none
trap number = 12
panic: page fault
syncing disks... 1
done
...
>How-To-Repeat:
kldunload ipf
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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