usb/145513: New USB stack: no new devices after forced usb
flash detach
Hans Petter Selasky
hselasky at c2i.net
Thu Apr 8 12:00:20 UTC 2010
The following reply was made to PR usb/145513; it has been noted by GNATS.
From: Hans Petter Selasky <hselasky at c2i.net>
To: freebsd-usb at freebsd.org
Cc: Krutov Mikle <nekoexmachina at gmail.com>,
freebsd-gnats-submit at freebsd.org
Subject: Re: usb/145513: New USB stack: no new devices after forced usb flash detach
Date: Thu, 8 Apr 2010 13:52:50 +0200
On Thursday 08 April 2010 12:55:44 Krutov Mikle wrote:
> >Number: 145513
> >Category: usb
> >Synopsis: New USB stack: no new devices after forced usb flash
> > detach Confidential: no
> >Severity: serious
> >Priority: low
> >Responsible: freebsd-usb
> >State: open
> >Quarter:
> >Keywords:
> >Date-Required:
> >Class: sw-bug
> >Submitter-Id: current-users
> >Arrival-Date: Thu Apr 08 11:00:15 UTC 2010
> >Closed-Date:
> >Last-Modified:
> >Originator: Krutov Mikle
> >Release: 8.0-STABLE
> >Organization:
> >Environment:
>
> FreeBSD takino.homeftp.org 8.0-STABLE FreeBSD 8.0-STABLE #0: Mon Mar 8
> 06:25:34 MSK 2010 root at takino.homeftp.org:/usr/obj/usr/src/sys/TAKINO
> amd64
>
> >Description:
>
> After detaching the mounted usb-flash device, no new usb-devices are
> detected. USB controller is "device = 'SB700 USB OHCI1 Controller"
>
> >How-To-Repeat:
>
> 1) attach (vfat-formated, did not test with other fs) flash device, mount
> it 2) detach without umounting
> 3) try to attach another usb-device
> 4) see no new devices, no dmesg messages, nothing
>
Hi,
That's because the UMASS detach is hanging, most likely.
Try to break into the kernel and get a backtrace.
--HPS
More information about the freebsd-usb
mailing list