From owner-freebsd-scsi  Thu Sep 28 10:37:22 2000
Delivered-To: freebsd-scsi@freebsd.org
Received: from polaris.we.lc.ehu.es (polaris.we.lc.ehu.es [158.227.6.43])
	by hub.freebsd.org (Postfix) with ESMTP id 846CE37B423
	for <scsi@FreeBSD.org>; Thu, 28 Sep 2000 10:37:16 -0700 (PDT)
Received: from v-ger.we.lc.ehu.es (v-ger [158.227.6.179])
	by polaris.we.lc.ehu.es (8.9.1/8.9.1) with ESMTP id TAA10516
	for <scsi@FreeBSD.org>; Thu, 28 Sep 2000 19:37:07 +0200 (MET DST)
Received: from we.lc.ehu.es (localhost [127.0.0.1])
	by v-ger.we.lc.ehu.es (8.11.0/8.11.0) with ESMTP id e8SHZ2S00689
	for <scsi@FreeBSD.org>; Thu, 28 Sep 2000 19:35:02 +0200 (CEST)
	(envelope-from jose@we.lc.ehu.es)
Message-ID: <39D38146.671CFFF0@we.lc.ehu.es>
Date: Thu, 28 Sep 2000 19:35:02 +0200
From: "Jose M. Alcaide" <jose@we.lc.ehu.es>
Organization: Universidad del Pais Vasco - Dpto. de Electricidad y Electronica
X-Mailer: Mozilla 4.75 [en] (X11; U; Linux 2.2.12 i386)
X-Accept-Language: es-ES, es, en-US, en
MIME-Version: 1.0
To: scsi@FreeBSD.org
Subject: panic when removing device with "camcontrol rescan"
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-scsi@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org

Hello,

I am running a pretty recent -current (Sept. 21) on a machine equipped
with an Adaptec 7880 controller. There are a HD, a MO unit (both internal)
and a DLT drive connected to the SCSI bus.

I can trigger a panic if I power the DLT off and then type "camcontrol
rescan 0", in order to remove the CAM device. The SCSI subsystem hangs,
so I cannot generate a crash dump. I compiled a kernel with DDB, and
I got the following trace output (function parameters left out - I am
copying by hand):

destroy_dev() at destroy_dev+0x7
sacleanup() at sacleanup+0x2d
camperiphfree() at camperiphfree+0x42
cam_periph_invalidate()
cam_periph_async()
saaync()
xpt_async_bcast()
xpt_async()
probedone()
camisr()
swi_cambio()
intr_soft()
fork_trampoline()

If there is a way for getting more post-mortem information, I could
try it... Any ideas?

Cheers,
-- JMA
****** Jose M. Alcaide  //  jose@we.lc.ehu.es  //  jmas@FreeBSD.org ******
** "Beware of Programmers who carry screwdrivers" --  Leonard Brandwein **


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-scsi" in the body of the message