From owner-freebsd-questions@FreeBSD.ORG Sat Jan 15 11:52:40 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3CE1B16A4CE for ; Sat, 15 Jan 2005 11:52:40 +0000 (GMT) Received: from ptb-relay01.plus.net (ptb-relay01.plus.net [212.159.14.212]) by mx1.FreeBSD.org (Postfix) with ESMTP id C32E243D46 for ; Sat, 15 Jan 2005 11:52:39 +0000 (GMT) (envelope-from ian@codepad.net) Received: from [80.229.159.44] (helo=[192.168.0.4]) by ptb-relay01.plus.net with esmtp (Exim) id 1CpmTu-000B6Z-OH for freebsd-questions@freebsd.org; Sat, 15 Jan 2005 11:52:38 +0000 From: Xian To: freebsd-questions@freebsd.org Date: Sat, 15 Jan 2005 11:52:37 +0000 User-Agent: KMail/1.7 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200501151152.37942.ian@codepad.net> Subject: kernel panic on umass drive X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 15 Jan 2005 11:52:40 -0000 I have small USB flash drive that has worked quite well up until now with FreeBSD. I've found I have to boot with it plugged in as when I don't will give a line in dmesg: umass0: Generic USB Flash Disk, rev 1.10/1.00, addr 5 but it only give the lines umass0: Generic USB Flash Disk, rev 1.10/1.00, addr 5 da0 at umass-sim0 bus 0 target 0 lun 0 da0: Removable Direct Access SCSI-0 device da0: 1.000MB/s transfers da0: 31MB (63904 512 byte sectors: 64H 32S/T 31C) I found that when I didn't have the da0 lines (It wasn't in the machine on boot) and I pulled the drive out it the kernel panicked about a page fault. The instruction pointer was 0xc0489e5b, and current process was 31 (irq21: uhci0 uhci1*). [ian@hercules:~] %nm -n /boot/kernel/kernel | grep c0489e5 c0489e50 t uhci_check_intr [ian@hercules:~] %uname -a FreeBSD hercules.codepad.net 5.3-RELEASE-p4 FreeBSD 5.3-RELEASE-p4 #6: Fri Jan 14 23:59:29 GMT 2005 root@hercules.codepad.net:/usr/obj/usr/src/sys/HERCULES i386 Also a yesterday I compiled in "device ehci" and the kernel panicked on boot when just after it had detected umass when the drive was plugged in. So I compiled it out again. I have had other USB Flash drives work properly on earlier version(s) of either 5.2.1R or 5.3R, I can't remember. I'm not sure how to get round this, or who this information would help. Any help will be very much appreciated, or who to send this info to. -- /Xian "Too many of us look upon Americans as dollar chasers. This is a cruel libel, even if it is reiterated thoughtlessly by the Americans themselves." Albert Einstein