Date: Tue, 18 May 2004 13:26:15 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: platanthera <platanthera@web.de> Cc: freebsd-questions@freebsd.org Subject: Re: ls(1) crashes Message-ID: <20040518122615.GA46147@happy-idiot-talk.infracaninophile.co.uk> In-Reply-To: <200405180025.10307.platanthera@web.de> References: <200405180003.12652.platanthera@web.de> <20040517220519.GA61167@dan.emsphone.com> <200405180025.10307.platanthera@web.de>
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--ikeVEW9yuYc//A+q Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, May 18, 2004 at 12:25:09AM +0200, platanthera wrote: > On Tuesday 18 May 2004 00:05, Dan Nelson wrote: > > In the last episode (May 18), platanthera said: > > > ls(1) crashed (exited on signal 10) for the second time within a > > > few days today. Could you please have a look at the core file and > > > tell me what's going on? Or even better yet - point me to a > > > beginners guide on how to interpret core files > > > > Signal 10 is a Bus Error and is usually due to bad memory or improper > > overclocking. >=20 > I've checked the memory using memtest86, and _not_ overclocked the cpu. That's the right thing to do in the first instance, but getting an "all clear" from memtest86 doesn't guarantee you are 100% clear of problems. (In technical terms, memtest86 doesn't produce false positives (saying there's an error when there isn't one) but it does have a low rate of false negatives (saying there's no error when there is one)) However, I'd start to look at other aspects of the system now -- the first thing to eliminate would be hard drive problems. Can you reboot the system into single user mode, and run fsck(8) on all the partitions? That's # fsck -f (Nb. only the root fs should be mounted, and that should be mounted read-only while you're doing that. Not coincidentally, that's the state booting into single user mode provides). If there are any errors reported by fsck(8), and especially if repeated fsck'ing doesn't clear them then your hard drive is probably about to give up the ghost. Other causes of the problem could be overheating -- not necessarily of the main CPU (as that just results in the screen going black, and whole system rebooting itself after a while) but of some of the bridge chipsets on the motherboard. Sometimes those chips will have a fan assisted heatsink but that's not very common. If they do, verify that the fan is working properly, and in any case, verify that the main case and power supply fans are working correctly, vents are not obstructed (either by stuff around your machine, or by dust on the inside) and that internal ribbon cables and so forth aren't preventing the free movement of air around the inside of the case. Even if you can't nail down exactly what the problem is, you might want to consider doing a cvsup + {build,install}{world,kernel} cycle. It will either make any deficiencies in your hardware glaringly obvious, or could very well make your trouble go away. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks Savill Way PGP: http://www.infracaninophile.co.uk/pgpkey Marlow Tel: +44 1628 476614 Bucks., SL7 1TH UK --ikeVEW9yuYc//A+q Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAqgDniD657aJF7eIRAsRBAJ0fzLU96D3apuJjAiKC9qgl0x5TtACgj59V 0Uwqjq7hLVoPBiX1DtSgT/A= =jpse -----END PGP SIGNATURE----- --ikeVEW9yuYc//A+q--
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