Date: Mon, 31 Mar 2008 10:59:52 +0100 (BST) From: Vince Hoffman <jhary@unsane.co.uk> To: FreeBSD-gnats-submit@FreeBSD.org Subject: usb/122287: Removal of usb serial Device with session (eg tip) attached panics system Message-ID: <200803310959.m2V9xqxu061804@unsane.co.uk> Resent-Message-ID: <200803311000.m2VA06A4029408@freefall.freebsd.org>
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>Number: 122287
>Category: usb
>Synopsis: Removal of usb serial Device with session (eg tip) attached panics system
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-usb
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Mar 31 10:00:06 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: Vince Hoffman
>Release: FreeBSD 7.0-STABLE #52
>Organization:
none
>Environment:
System: FreeBSD prawn.unsane.co.uk 7.0-STABLE FreeBSD 7.0-STABLE #52: Tue Mar 25 13:45:50 GMT 2008 toor@prawn.unsane.co.uk:/usr/local/obj/usr/src/sys/PRAWN7ULE i386
>Description:
removing a USB device that has an open session (for example tip) will
panic the kernel, this is 100% reproducable for me.
{root@prawn}#more info.14
Dump header from device /dev/ad0s3b
Architecture: i386
Architecture Version: 2
Dump Length: 154411008B (147 MB)
Blocksize: 512
Dumptime: Mon Mar 31 09:25:54 2008
Hostname: prawn.unsane.co.uk
Magic: FreeBSD Kernel Dump
Version String: FreeBSD 7.0-STABLE #52: Tue Mar 25 13:45:50 GMT 2008
toor@prawn.unsane.co.uk:/usr/local/obj/usr/src/sys/PRAWN7ULE
Panic String: page fault
Dump Parity: 1302845723
Bounds: 14
Dump Status: good
I'm happy to build a kernel with debug symbols if needed but it should be easy
to reproduce.
I have only tried this with a UFTDI device. I have a uark device at home I can
try it with if needed.
>How-To-Repeat:
With the following entry in /etc/remote
usb0:dv=/dev/ttyU0:br#9600:pa=none:
tip usb0
then unplug the usb serial adapter.
>Fix:
unknown as yet
>Release-Note:
>Audit-Trail:
>Unformatted:
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