Date: Sun, 21 Oct 2012 17:59:02 -0700 From: David Wolfskill <david@catwhisker.org> To: Kevin Oberman <kob6558@gmail.com> Cc: Alexander Motin <mav@freebsd.org>, stable@freebsd.org Subject: Re: stable/9 @r241776 panic: REDZONE: Buffer underflow detected... Message-ID: <20121022005902.GF1609@albert.catwhisker.org> In-Reply-To: <CAN6yY1v4FMq2d-quSi7Kbsf7-4dj2CUBF2UvU_whWq-GOUVFsg@mail.gmail.com> References: <20121021121356.GJ35915@deviant.kiev.zoral.com.ua> <20121021163322.GB1730@albert.catwhisker.org> <20121021164634.GC1730@albert.catwhisker.org> <20121021174054.GM35915@deviant.kiev.zoral.com.ua> <50843EB6.8030407@FreeBSD.org> <20121021202346.GB1609@albert.catwhisker.org> <5084713A.1050200@FreeBSD.org> <508477A8.2040609@FreeBSD.org> <20121021224648.GE1609@albert.catwhisker.org> <CAN6yY1v4FMq2d-quSi7Kbsf7-4dj2CUBF2UvU_whWq-GOUVFsg@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
--HKEL+t8MFpg/ASTE Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Oct 21, 2012 at 05:28:49PM -0700, Kevin Oberman wrote: > ... > This is starting to smell a bit like it may be tied to hardware. If > you have two memory cards, you might want to try swapping them. If > not, maybe let memtest86 run overnight. There are 2 SODIMMS, yes. So I reverted mjg@'s sys/kern/subr_bus.c patch, rebuilt the kernel, and rebooted ... without issue: I was unable to reproduce the problem. Despite my inability to reproduce it, I went ahead & powered down, swapped the SODIMMs, and rebooted. Still no recurrence. > Yes, this is a total shot in the dark, but this one is really weird > and when I see really weird, I start too look at hardware, especially > memory and power supply. (And this really does not sound like power > supply to me.) > ... The machine is a Dell Precision M4400, and I have extended to hardware warranty. So if I can actually demonstrate a real hardware issue -- in a way that Dell will accept -- I should be able to get it fixed. (I've had a fair bit of practice at that, as the warranty includes accidental damage -- and the time I got flipped off my bicycle while the machine was in a (padded) rucksack qualified.) That said, overnight is when the machine updates its local private mirrors of the FreeBSD SVN repositories, so I can start my daily rebuilds of stable/9 & head fairly early in the morning. (I prefer to get those -- as well as the port-updating -- completed before I get in to work, as I use the laptop to access all of the other machines I use. And I exercise the just-built stable/9 for the rest of the day....) Peace, david --=20 David H. Wolfskill david@catwhisker.org Taliban: Evil men with guns afraid of truth from a 14-year old girl. See http://www.catwhisker.org/~david/publickey.gpg for my public key. --HKEL+t8MFpg/ASTE Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlCEmlUACgkQmprOCmdXAD3M/ACeI/6T2k/UFDjraQDObwG5MmtB cm4AoIFG/oHqlzUafAyrAUKzuEj4NUa1 =5KRG -----END PGP SIGNATURE----- --HKEL+t8MFpg/ASTE--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20121022005902.GF1609>