Re: Looking for FreeBSD kernel debugging help
Hi Everybody, First, thanks to everybody offering tips and help. The good news is that the problem is solved. I couldn't wait, so I finally decided to learn a little FreeBSD kernel debugging. After reading lots of not very comprehensive man pages and other guides, I got a 4.4 kernel compiled with ddb and set up remote debugging over the 2nd serial port with gdb. Again, after reading even more on using gdb, I set a bunch of breakpoints a did a little tracing and got the problem localized to a PCI configuration problem, probably a undocumented hardware bug in the Geode SC1100 processor combined with not very smart PCI config code in FreeBSD. I have patched FreeBSD to boot on the net4801 board, more details after I know exactly what's the issue is. Lesson learned: Advanced FreeBSD documentation sucks if you're not a kernel hacker, but remote kernel debugging works great and are actually kinda fun Regards, Soren Kristensen ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Looking for FreeBSD kernel debugging help
On Wed, 11 Jun 2003 18:22, Soren Kristensen wrote: Lesson learned: Advanced FreeBSD documentation sucks if you're not a kernel hacker, but remote kernel debugging works great and are actually kinda fun Procedural things are more likely to be usefully documented in the handbook or FAQ (or The Complete FreeBSD), rather than a specific man page. They can be a bit stale though :( Serial GDB is very nice.. You can even do firewire debugging, but I guess you guys can't really use that :) (Firewire mini-PCI board? 8-) -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au The nice thing about standards is that there are so many of them to choose from. -- Andrew Tanenbaum GPG Fingerprint - 9A8C 569F 685A D928 5140 AE4B 319B 41F4 5D17 FDD5 ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Looking for FreeBSD kernel debugging help
Daniel O'Connor wrote: Serial GDB is very nice.. You can even do firewire debugging, but I guess you guys can't really use that :) (Firewire mini-PCI board? 8-) Someone should port the network debugging from Darwin using the tiny IP stack from NetBSD. -- Terry ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Looking for FreeBSD kernel debugging help
On Wed, 2003-06-11 at 06:22, Terry Lambert wrote: Someone should port the network debugging from Darwin using the tiny IP stack from NetBSD. Well, there's this: http://ipgdb.sourceforge.net/ IPGDB is a collection of extensions to GDB and FreeBSD-4.3 to allow two-machine kernel debugging over UDP. It behaves much like two-machine kernel debugging over serial ports. These extensions can easily be applied to other releases of FreeBSD. With a little bit of modification, these extension can be applied to other BSD variants. It hasn't been updated in a while, but it's definitely a start. It works pretty well for 4.3, and I know it's been updated to work with 4.6 (though possibly not in the sourceforge distribution). --nat ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Looking for FreeBSD kernel debugging help
On Wed, 11 Jun 2003, Nat Lanza wrote: On Wed, 2003-06-11 at 06:22, Terry Lambert wrote: Someone should port the network debugging from Darwin using the tiny IP stack from NetBSD. Well, there's this: http://ipgdb.sourceforge.net/ IPGDB is a collection of extensions to GDB and FreeBSD-4.3 to allow two-machine kernel debugging over UDP. It behaves much like two-machine kernel debugging over serial ports. These extensions can easily be applied to other releases of FreeBSD. With a little bit of modification, these extension can be applied to other BSD variants. It hasn't been updated in a while, but it's definitely a start. It works pretty well for 4.3, and I know it's been updated to work with 4.6 (though possibly not in the sourceforge distribution). I think that Groggy was working on this a while back. Regards - Richard Sharpe, rsharpe[at]ns.aus.com, rsharpe[at]samba.org, sharpe[at]ethereal.com, http://www.richardsharpe.com ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to [EMAIL PROTECTED]
