Date: Sun, 30 Nov 2008 12:46:58 -0800 From: Kris Kennaway <kris@FreeBSD.org> To: Holger Kipp <hk@alogis.com> Cc: stable@freebsd.org Subject: Re: panic: spin lock held too long on 7.1-PRERELEASE (sio) Message-ID: <4932FBC2.5060807@FreeBSD.org> In-Reply-To: <20081130124938.GA44403@intserv.int1.b.intern> References: <20081130124938.GA44403@intserv.int1.b.intern>
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Holger Kipp wrote: > Hi, > > I currently encounter > > spin lock 0xc0c83ba8 (sio) held by 0xc6337460 (tid 100005) too long > panic: spin lock held too long > cpuid=3 > > on hp server with two dual-core intel xeon (3.8GHz) and 3GB RAM. > System is 7.1-PRELEASE last fetched 29.11.2008, 17:58 UTC. > > This happens with VSCom Card that was previously in use in a > 5.3-STABLE system (also hp server, but older hardware) without > problems. The card is a 8-port serial card using puc0 and puc1 > with 4 ports each. > > Interestingly, problem seems to occur only if sendfax is using > devices attache to puc1. Works without problems at the moment > with sendfax only using puc0-sios. See dmesg below. > > Any ideas what might be causing this, or is this even related > to kern/121322, 118044 or 117913? Enable WITNESS in your kernel and try to reproduce the problem. It should give additional information about the condition leading to the deadlock. Kris
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