Date: Mon, 29 Sep 2008 20:19:47 -0400 From: Sean Thomas Caron <scaron@umich.edu> To: freebsd-sparc64@freebsd.org Subject: Kernel panic in 7.0-RELEASE with fatm driver Message-ID: <20080929201947.86701vp3bs8vcatc@web.mail.umich.edu>
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Hi folks, I've been running FreeBSD 6.x on a number of Ultrasparc based systems =20 using the Cranor NATM driver with a bunch of Fore PCA-200E cards. It =20 generally worked but as the machines got hit with higher and higher =20 network load I would get kernel panics at fairly random intervals on =20 "sbdrop" and "sbflush". Sometimes I would get two per day, sometimes I =20 wouldn't get any for two weeks. So after a while at this I decided to try 7.0-RELEASE out hoping =20 whatever bug was causing these random kernel panics might have gotten =20 fixed. Test system is Sun Fire v120, 550 MHz, 1 GB RAM, PCA-200e installed in =20 PCI slot. I pruned a bunch of stuff from GENERIC and added the usual Cranor NATM =20 stuff that I was using in 6.x. In particular - # ATM options NATM device atm device fatm device utopia Kernel does have multiprocessing enabled (as GENERIC did) even though =20 it's a uniprocessor machine. I built the new kernel then reboot and it panics immediately after =20 touching the ATM card - fatm0: <FORE PCA200E> mem 0x200000-0x3fffff at device 5.0 on pci2 panic: bus_dma_tag_create: parent DMA tag NULL cpuid =3D 0 Uptime: 1s Automatic reboot in 15 seconds - press a key on the console to abort --> Press a key on the console to reboot, --> or switch off the system now. I'm hoping maybe someone has seen this before and has a patch laying =20 around somewhere, or if nothing else, it might get passed along to the =20 fatm maintainer eventually? If anyone wants to see any further information e.g. full kernel =20 configuration file, I will be happy to pass along. I can also procure =20 a backtrace if someone can tell me how to hardcode a dump path into =20 the kernel; I can't find a procedure documented anywhere. Thanks! -Sean
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