Date: Sat, 10 Mar 2007 00:46:49 +0100 From: =?ISO-8859-1?Q?Eirik_=D8verby?= <ltning@anduin.net> To: Kris Kennaway <kris@obsecurity.org> Cc: stable@freebsd.org Subject: Re: Panic: spin lock smp rendezvous ... held too long Message-ID: <AAA683F3-2362-431A-9D43-FAB4E1168447@anduin.net> In-Reply-To: <20070309024157.GA58736@xor.obsecurity.org> References: <3FCD4E86-40CA-4E27-AF97-DFB94F02077C@anduin.net> <20070309024157.GA58736@xor.obsecurity.org>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --Apple-Mail-9--244202815 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed On Mar 9, 2007, at 03:41, Kris Kennaway wrote: > On Fri, Mar 09, 2007 at 12:44:03AM +0100, Eirik ?verby wrote: >> Hi all, >> >> I just installed 6.2-RELEASE on a Supermicro 6013P-8 server, a dual >> P4-Xeon 2.4ghz with 4GB ECC memory and an asr driven SCSI RAID >> controller. >> >> It has been working OK (although I suspect the asr driven, being >> giant-locked, is very inefficient) for a little while, but as I was >> extracting a bunch of tarballs it paniced like so: >> >> spin lock smp rendezvous held by 0xc9d54600 for > 5 seconds >> panic: spin lock held too long >> cpuid = 0 >> >> I don't have a dump device (though I'm setting that up for the next >> reboot). However, I have tried turning off HT, to see if that might >> help. >> >> Does this look familiar to anyone? Or do I need to produce more data >> if it happens again? > > It can mean that something deadlocked. Turning on WITNESS may help to > debug this, although it has a large performance impact. I can't turn on WITNESS here "just like that", as I'll need some time to find a replacement server for some critical applications. However, the strange thing is that this server has been running solid as a rock (not one single crash) for 2 years with FreeBSD 4.x on it, so I am fairly sure there is no hardware issue. It crashed today, and I have obtained a dump. I am running 6.2- RELEASE with the stock SMP kernel, and haven't recompiled yet, so I can't seem to find a kernel.debug, but I'm building one now with the 6.2-RELEASE sources, as supplied on the CD. I'm assuming this will give me a useable kernel.debug. Anything in particular I should look for if/when I'm able to peek into the dump with kgdb? thanks, /Eirik > > Kris --Apple-Mail-9--244202815 content-type: application/pgp-signature; x-mac-type=70674453; name=PGP.sig content-description: This is a digitally signed message part content-disposition: inline; filename=PGP.sig content-transfer-encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Darwin) iD8DBQFF8fHpDRlfnc8VQWcRAuKWAJ4p/0F0SnJ1WE7vwJ+V8PUznOEvxgCgnVL8 19CGK4J4luiTTR0lV2P82TM= =tmf9 -----END PGP SIGNATURE----- --Apple-Mail-9--244202815--
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