Date: Sun, 26 Feb 2006 15:51:44 -0800 From: Kent Stewart <kstewart@owt.com> To: Kris Kennaway <kris@obsecurity.org> Cc: Garrett Cooper <youshi10@u.washington.edu>, freebsd-questions@freebsd.org Subject: Re: anyone recognize this panic? Message-ID: <200602261551.44672.kstewart@owt.com> In-Reply-To: <20060226204212.GA15063@xor.obsecurity.org> References: <17409.8562.677322.222883@jerusalem.litteratus.org> <200602261239.23132.kstewart@owt.com> <20060226204212.GA15063@xor.obsecurity.org>
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On Sunday 26 February 2006 12:42, Kris Kennaway wrote: > On Sun, Feb 26, 2006 at 12:39:22PM -0800, Kent Stewart wrote: > > On Sunday 26 February 2006 12:29, Kris Kennaway wrote: > > > On Sun, Feb 26, 2006 at 11:24:28AM -0800, Kent Stewart wrote: > > > > > Unfortunately without a traceback the panic string is useless > > > > > since it gives you no clue about how the system got into that > > > > > state. This kind of panic is often a secondary effect of > > > > > some other problem. > > > > > > > > I can cause this to happen almost at will with a Netgear GA311. > > > > It only happens at boot. It will reboot after the panic just > > > > fine and, for me, it only happens repeatedly after I do a > > > > restart boot from XP. It has never happened if I shut the > > > > system down first. I have moved many GBs of distfiles and > > > > packages with out causing a panic. > > > > > > > > I haven't found a way to cause a dmp when it panics. At least, > > > > what I have read doesn't work. So, how can I get a dmp, which I > > > > can provide a traceback? > > > > > > What happens when you 'call doadump' from DDB? > > > > I haven't be able to invoke the debugger at the boot panic and even > > adding dumpdev to rc.comp doesn't produce a dump file. The /swap > > and /var are large enough to dump memory. > > > > I also haven't added DDB to the kernel config. I guess I need to > > first get my Digital Rebel, so, I can keep a copy and see what is > > on the screen when it panics. > > Well, if you don't have DDB in your kernel config, you certainly > won't be able to invoke it when it panics ;-) hehehe - of course :) One thing, the developer's handbook only talks about "option DDB" but that won't compile until you have added KDB. Now, I got it to panic but it took 5 or 6 tries. "At will" must have heard his name and ran away :). However, when I try "call doadump" it says no dump device has been specified. I have dumpdev="AUTO" in rc.conf but I think this is happening far to early. All is not lost because I think I have 3-6.3 MP images of the panic and the trace back. How can I get a dumpdev that early into the boot? This is turning into the pain I thought it would be :). Kent -- Kent Stewart Richland, WA http://www.soyandina.com/ "I am Andean project". http://users.owt.com/kstewart/index.html
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