Date: Wed, 20 May 2009 12:49:58 +0900 From: Weongyo Jeong <weongyo.jeong@gmail.com> To: Lucius Windschuh <lwindschuh@googlemail.com> Cc: freebsd-current@freebsd.org, Hans Petter Selasky <hselasky@c2i.net> Subject: Re: Panics and potential memory corruption when pulling out a uath device Message-ID: <20090520034958.GJ42412@weongyo.cdnetworks.kr> In-Reply-To: <90a5caac0905191121r7da4f6e8t733eff327cf551e0@mail.gmail.com> References: <90a5caac0905171354k6e7c008eye18bd69aa543eaa6@mail.gmail.com> <200905181050.03154.hselasky@c2i.net> <90a5caac0905181508m7024377as8d70c89694a21e26@mail.gmail.com> <20090519044941.GC42412@weongyo.cdnetworks.kr> <90a5caac0905191121r7da4f6e8t733eff327cf551e0@mail.gmail.com>
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On Tue, May 19, 2009 at 08:21:22PM +0200, Lucius Windschuh wrote: > 2009/5/19 Weongyo Jeong <weongyo.jeong@gmail.com>: > > On Tue, May 19, 2009 at 12:08:45AM +0200, Lucius Windschuh wrote: > >> 2009/5/18 Hans Petter Selasky <hselasky@c2i.net>: > >> > Regarding the first panic, there seems to be a detach race in both upgt and > >> > uath, which is not USB related. Try this patch: > >> > > >> > http://perforce.freebsd.org/chv.cgi?CH=162250 > >> > >> This fixes not only the first panic. > >> I can't provoke any panic by pulling out the active device. Thanks. > > > > Could you please test with this patch that is slightly different with > > Hans's patch? ?It try to unsetup after stopping the device. > > > > If no problems I'd commit it. > > This works also. I cannot produce panics with it. The patch is committed at r192419. Thanks you for reporting! :-) regards, Weongyo Jeong
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