Date: Thu, 1 Jun 2006 06:25:34 +0200 From: Thierry Herbelot <thierry@herbelot.com> To: Anish Mistry <mistry.7@osu.edu> Cc: freebsd-current@freebsd.org Subject: Re: panic while playing with a ugen Message-ID: <200606010625.36520.thierry@herbelot.com> In-Reply-To: <200605311930.17675.mistry.7@osu.edu> References: <200606010042.47193.thierry@herbelot.com> <200605311930.17675.mistry.7@osu.edu>
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Le Thursday 1 June 2006 01:30, Anish Mistry a écrit : > On Wednesday 31 May 2006 18:42, Thierry Herbelot wrote: > > the panic occured when closing one endpoint of a ugen device (the > > device was disconnecting from the USB bus after being reseted). > > I haven't seen this particular panic with ugen before. > Try the patch in PR: usb/97271. If you've got a test program and > instructions that can reproduce this panic after applying that patch > let me know. > > Thanks, > will do (ASAP) from a very summary reading of the patch, it seems that the panic I saw is a deeper FreeBSD problem, where a si_devsw may have correctly been emptied as the underlying physical object has been unplugged, and still some code is blindly unreferencing the structure and its members (to be confirmed). TfHhome | help
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