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 using the Cranor NATM driver with a bunch of Fore PCA-200E cards. It generally worked but as the machines got hit with higher and higher network load I would get kernel panics at fairly random intervals on "sbdrop" and "sbflush". Sometimes I would get two per day, sometimes I wouldn't get any for two weeks. So after a while at this I decided to try 7.0-RELEASE out hoping whatever bug was causing these random kernel panics might have gotten fixed. Test system is Sun Fire v120, 550 MHz, 1 GB RAM, PCA-200e installed in PCI slot. I pruned a bunch of stuff from GENERIC and added the usual Cranor NATM 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 it's a uniprocessor machine. I built the new kernel then reboot and it panics immediately after 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 = 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 around somewhere, or if nothing else, it might get passed along to the fatm maintainer eventually? If anyone wants to see any further information e.g. full kernel configuration file, I will be happy to pass along. I can also procure a backtrace if someone can tell me how to hardcode a dump path into the kernel; I can't find a procedure documented anywhere. Thanks! -Sean
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