Date: Thu, 30 Apr 2009 20:27:48 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: David Wolfskill <david@catwhisker.org> Cc: current@freebsd.org Subject: Re: Panic: witness_warn (r191682; shared rw udpinp (udpinp)...netinet6/udp6_usrreq.c:360) Message-ID: <alpine.BSF.2.00.0904302026460.8997@fledge.watson.org> In-Reply-To: <20090430155408.GX1387@albert.catwhisker.org> References: <20090430155408.GX1387@albert.catwhisker.org>
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On Thu, 30 Apr 2009, David Wolfskill wrote: > Build machine crashed on boot of r191682: > > ... > GEOM_LABEL: Label ufsid/48fa940b4445475f removed. > fxp0: link state changed to UP > suspending ithread with the following locks held: > shared rw udpinp (udpinp) r = 0 (0xc5ac4f3c) locked @ /usr/src/sys/netinet6/udp6_usrreq.c:360 > panic: witness_warn > cpuid = 1 > KDB: enter: panic > [thread pid 12 tid 100008 ] > Stopped at kdb_enter+0x3a: movl $0,kdb_why > db> > > I started to paste the output of "show witness" in here, but it got to be > sufficiently lengthy that I thought it better to save it for private mail or > a follow-up if it's really wanted. This falls into the category of "unlikely software bugs" -- is there any chance this machine is overheating or has memory problems? "show alllocks" would be helpful on general principle, though. Robert N M Watson Computer Laboratory University of Cambridge
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