Date: Mon, 11 Jun 2012 19:53:51 +0200 From: FreeBSD@nagilum.org To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-gnats-submit@freebsd.org, freebsd-usb@freebsd.org Subject: Re: usb/168743: panic: double fault caused by umass Message-ID: <20120611195351.Horde.a9QVPJk8pphP1jCv5vpyNHA@cakebox.homeunix.net> In-Reply-To: <201206111857.12147.hselasky@c2i.net> References: <201105280113.p4S1DWgM081572@red.freebsd.org> <alpine.BSF.2.00.1105281024440.18707@joyce.lan> <201105281635.57055.hselasky@c2i.net> <201206111857.12147.hselasky@c2i.net>
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I'm compiling a new kernel with those options as I type. Yes, this is very much reproduceable. If you look at the dmesg you will also see the previous reboot for the same reason but with a different device - a WLAN stick that also includes some mass storage for the windows driver and probably another for the mini-sd or whatever card fits in there.. The Pendrive I then used is a 64MB (yes, megabytes) so from that you can probably guess how ancient that thing is so it should not have any new and fancy options aka quirks ;). What I haven't tried yet is simply loading the module while no device is attached. I'll try that when I have the new kernel booted. It will take some time though since this is a 500MHz Geode.. I think I also saw a few other bugreports related to this issue maybe someone else already included a backtrace. Thanks for looking into this, Alex. Zitat von Hans Petter Selasky <hselasky@c2i.net>: > Hi, > > This sounds like a missing MODULE_DEPEND() issue or your pendrive is > returning > an error code to some of the SCSI commands which is not handled properly. > > > Could you add these options to the kernel config file: > > options KDB # Kernel debugger related code > options KDB_TRACE # Print a stack trace for a panic > > Then get full backtrace. > > Is this issue reproducable. I cannot reproduce over here using a 9-stable > GENERIC kernel without "device umass". > > --HPS
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