From owner-freebsd-usb@FreeBSD.ORG Thu Apr 8 17:40:04 2010 Return-Path: Delivered-To: freebsd-usb@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 50EED106566B for ; Thu, 8 Apr 2010 17:40:04 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 0AD3B8FC0A for ; Thu, 8 Apr 2010 17:40:04 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id o38He3f5024677 for ; Thu, 8 Apr 2010 17:40:03 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o38He3Cv024668; Thu, 8 Apr 2010 17:40:03 GMT (envelope-from gnats) Date: Thu, 8 Apr 2010 17:40:03 GMT Message-Id: <201004081740.o38He3Cv024668@freefall.freebsd.org> To: freebsd-usb@FreeBSD.org From: Hans Petter Selasky Cc: Subject: Re: usb/145513: New USB stack: no new devices after forced usb flash detach X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Hans Petter Selasky List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Apr 2010 17:40:04 -0000 The following reply was made to PR usb/145513; it has been noted by GNATS. From: Hans Petter Selasky To: Mikle Krutov Cc: freebsd-usb@freebsd.org, freebsd-gnats-submit@freebsd.org Subject: Re: usb/145513: New USB stack: no new devices after forced usb flash detach Date: Thu, 8 Apr 2010 19:29:43 +0200 On Thursday 08 April 2010 19:14:03 Mikle Krutov wrote: > On Thu, Apr 08, 2010 at 01:52:50PM +0200, Hans Petter Selasky wrote: > > Hi, > > > > That's because the UMASS detach is hanging, most likely. > > > > Try to break into the kernel and get a backtrace. > > > > --HPS > > Hi, > I unfortunately could not find any info about how do i do this. Could > you provide me some link? > Add: options KDB # Enable kernel debugger support. options DDB # Support DDB. options GDB # Support remote GDB. When it hangs, enter this from the console: sysctl debug.kdb.panic=1 Type alltrace bt bt all or something similar. Type "continue" when you are finished. You can also use CTRL+ALT+ESC key combination. --HPS