Date: Thu, 3 Jul 2008 10:52:12 -0400 From: "Alexander Sack" <pisymbol@gmail.com> To: "=?ISO-8859-1?Q?Fernando_Apestegu=EDa?=" <fernando.apesteguia@gmail.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: FreeBSD 7 64 bits kernel crash debugging Message-ID: <3c0b01820807030752p212c3f17i236004c37bc39016@mail.gmail.com> In-Reply-To: <1bd550a00807020950x24af0f8n6d2a9c66f14f1cfd@mail.gmail.com> References: <1bd550a00807020950x24af0f8n6d2a9c66f14f1cfd@mail.gmail.com>
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On Wed, Jul 2, 2008 at 12:50 PM, Fernando Apestegu=EDa <fernando.apesteguia@gmail.com> wrote: > Hi all, > > I'm experiencing several kernel crashes with the GENERIC kernel and > with custom kernels as well. One of my MP3 players seems to be > recognized, but if I disconnect it from the USB port (even without > mounting the device), I got a kernel crash. > > I've tried to follow the instructions at > http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html > I have dumpdev and dumpdir properly set to my swap partition (ad0s2b) > and to /var/crash. > > However, during the next boot, I got a message that indicates it is > looking for a dump on such device but it couldn't find any. > > How can I track this error? Have you enabled at least KDB/DDB debugger support so you can look at a stack trace ("t") and post this? This will at least give us/you some idea on what is crashing... Add minimally to your kernel build conf file: options DDB options KDB Rebuild, reboot, and test. I'm not sure why a crash dump is not working. Have you tried specifying your dump device in your kernel config file? Let us know, -aps
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