Date: Sun, 11 Jan 2009 20:06:12 +0100 From: "Alexey Shuvaev" <shuvaev@physik.uni-wuerzburg.de> To: Attilio Rao <attilio@freebsd.org> Cc: current@freebsd.org Subject: Re: hangup (livelock) - db> prompt in endless loop Message-ID: <20090111190612.GA3700@wep4035.physik.uni-wuerzburg.de> In-Reply-To: <3bbf2fe10901050751y74ccd7e3va68fea0634fbd79f@mail.gmail.com> References: <4947C526.2080702@citrin.ru> <494B740B.4080602@citrin.ru> <3bbf2fe10901050751y74ccd7e3va68fea0634fbd79f@mail.gmail.com>
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On Mon, Jan 05, 2009 at 04:51:04PM +0100, Attilio Rao wrote: > 2008/12/19 Anton Yuzhaninov <citrin@citrin.ru>: > > 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. > >> > > > > With more fresh current - Wed Dec 17 21:09:38 > > Panic not repeated. > > This is probabilly a bug in the DDB lookup function. > It just stops immediately or after a couple of commands? (and if it > does, which comands exactly?) > Hi! I've seen this too - but only with one src checkout. The symptoms as they are observed: Leave the system with Xorg turned off (text mode), logout all users, switch to ttyv0 (not sure about this) and go away. When you are back, you see db> prompt running on the screen. This was amd64 CURRENT with GENERIC kernel. So, there was no user interaction (via keyboard). Hope, this helps, Alexey.
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