Date: Mon, 24 Oct 2005 00:24:23 -0700 From: "David O'Brien" <obrien@FreeBSD.org> To: Roman Kurakin <rik@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/cp if_cp.c Message-ID: <20051024072423.GA34909@dragon.NUXI.org> In-Reply-To: <200509271657.j8RGvj2n015326@repoman.freebsd.org> References: <200509271657.j8RGvj2n015326@repoman.freebsd.org>
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On Tue, Sep 27, 2005 at 04:57:45PM +0000, Roman Kurakin wrote: > rik 2005-09-27 16:57:45 UTC > > FreeBSD src repository > > Modified files: > sys/dev/cp if_cp.c > Log: > Restore if_cp.c 1.27 > ---------------------------- > revision 1.27 > date: 2005/09/19 03:10:16; author: imp; state: Exp; lines: +3 -2 > Make sure that we call if_free(ifp) after bus_teardown_intr. Since we > could get an interrupt after we free the ifp, and the interrupt > handler depended on the ifp being still alive, this could, in theory, > cause a crash. Eliminate this possibility by moving the if_free to > after the bus_teardown_intr() call. > > In fact, this change do nothing for this driver. It is protected from > this by cp_destroy variable. This variable also protects driver from > initiation of any activity from network stack with disabled intr > handler with this change applied. You should not have backed out my commit without discussing it with me and understanding the reason for the change. Do it again and I *will* be taking it Core. -- -- David (obrien@FreeBSD.org)
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