Date: Mon, 25 Aug 2003 20:26:06 -0700 From: "David G. Lawrence" <dg@dglawrence.com> To: Peter Wemm <peter@wemm.org> Cc: stable@freebsd.org Subject: Re: PAE removal patch for testing Message-ID: <20030826032606.GC61917@nexus.dglawrence.com> In-Reply-To: <20030826022000.25AC22A7EA@canning.wemm.org> References: <5.2.0.9.0.20030825220024.07324008@209.112.4.2> <20030826022000.25AC22A7EA@canning.wemm.org>
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> Mike Tancsa wrote: > > At 04:51 PM 25/08/2003 -0500, Mike Silbersack wrote: > > > > >Right now, anyone who is experiencing problems should definitely try that > > >short patch which Mike Tancsa said works for him and confirm whether or > > >not it fixes the issue on their system. > > > > The 2 servers I am running it on both have been stable since applying it. > > ns4% uptime > > 9:58PM up 2 days, 4:27, 2 users, load averages: 0.02, 0.03, 0.05 > > ns4% > > > > would have rebooted several times by now. The other machine is also > > stable. Both are quite busy mail routers. One also runs spamassassin via a > > milter. > > This change matches -current and should probably be committed ASAP. I've reviewed it as well and it definitely is a bug that needs to be fixed ASAP. Basically, the pmap_remove code in -stable doesn't handle the case of crossing a page table boundry properly. If the next page table page isn't currently mapped, then the kernel will [fatally] fault when trying to access it. -DG David G. Lawrence Download Technologies, Inc. - http://www.downloadtech.com - (866) 399 8500 TeraSolutions, Inc. - http://www.terasolutions.com - (888) 346 7175 The FreeBSD Project - http://www.freebsd.org Pave the road of life with opportunities.
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