Date: Wed, 17 Dec 2008 15:12:40 +0100 From: "Paul B. Mahol" <onemda@gmail.com> To: "Alexey Shuvaev" <shuvaev@physik.uni-wuerzburg.de> Cc: freebsd-current@freebsd.org Subject: Re: hangup (livelock) - db> prompt in endless loop Message-ID: <3a142e750812170612j1d656284s20c65542b85578eb@mail.gmail.com> In-Reply-To: <20081217100406.GA1595@wep4035.physik.uni-wuerzburg.de> References: <4947C526.2080702@citrin.ru> <20081217100406.GA1595@wep4035.physik.uni-wuerzburg.de>
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On 12/17/08, Alexey Shuvaev <shuvaev@physik.uni-wuerzburg.de> wrote: > On Tue, Dec 16, 2008 at 06:11:34PM +0300, Anton Yuzhaninov wrote: >> My box with fresh current sometimes stops to respond. >> >> On screen in endless loop printed debugger prompt >> >> db> >> >> but I can't type anything here. >> >> Alt+Ctrl+Esc and Alt+Ctrl+Del don't stops this loop. >> >> How I can debug this problem? >> >> system: current from Mon Dec 15 16:16:23 MSK 2008 with GENERIC kernel, >> amd64, SMP. >> > Me too! > > The system is: > # uname -a > FreeBSD wep4035 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Mon Dec 15 14:21:48 CET > 2008 > root@wep4035:/usr/obj/usr/src/sys/USB2 amd64 > > It can hang even in single user mode with only / mounted read-only, > but with already configured network (msk). I have never seen how it > happens, however :( Looks like syscons problem, does it happen with kern.smp.disabled=1? -- Paul
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