Date: Fri, 7 Aug 1998 21:03:24 -0700 (PDT) From: dima@best.net (Dima Ruban) To: dg@root.com Cc: brett@lariat.org, roberto@keltia.freenix.fr, FreeBSD-security@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: Does this mean we have another breakin? Message-ID: <199808080403.VAA05702@burka.rdy.com> In-Reply-To: <199808080135.SAA00798@implode.root.com> from David Greenman at "Aug 7, 1998 6:35:55 pm"
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David Greenman writes: > >We were about to do it AGAIN. Now we're holding out some hope that it's > >just a bug -- though perhaps the same one that's crashing us when we try to > >back up. > > > >In any event, I just received private e-mail stating that at least one > >person has encountered VM problems in -stable under heavy CPU loads when > >the swapper kicks in. According to the message, they cause corruption of > >file modification dates. > > Corruption is probably not the right word. There might be a bug where a > page is seen as modified when it isn't, causing the modify date to get > updated. The only way to be certain is to compare the binary with your > backup (e.g. if installed from CDROM, then with the copy on the CDROM). I > haven't personally seen this happen in more than a year, so if the bug is > still there, it must be fairly rare. We usually get this bug once in two weeks. But since file by itself stays the same and machine doesn't crash, fixing/finding the problem wasn't in out TODO list. > > -DG > > David Greenman > Co-founder/Principal Architect, The FreeBSD Project > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe security" in the body of the message > -- dima To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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