Hello, Mark 2011/1/11 Mark Saad <nones...@longcount.org>: > All > This was originally posted to hackers@ > > I have a good question that I cant find an answer for. I believe > found a kernel bug in 7.3-RELEASE that prevents me from booting 64-bit > kernels on HP's DL360 G4p . The kernel dies with "Fatal trap 12: page > fault while in kernel mode " . The hardware works fine in 7.2-RELEASE > amd64, 7.1-RELEASE amd64, and 6.4-RELEASE amd64 . > > In 7.3-RELEASE amd64 I can not boot from cd or pxe correctly using the > stock 7.3-RELEASE amd64 kernel however i386 works fine. To see if this > issue was some how fixed in 7.3-RELEASE-p4 amd64 I rebuilt a GENERIC > kernel using patches sources and tried to boot and I got the same > crash. > > Next I rebuilt the kernel with KDB and DDB to see if I could get a > core-dump of the system. I also set loader.conf to > > kernel="kernel.DEBUG" > kern.dumpdev="/dev/da0s1b" > > Next I pxebooted the box and the system does not crash on boot up, it > will easily load a nfs root and work fine. So I copied my debug > kernel, and loader.conf to the local disk and rebooted and it boots > fine from the local disk .
Looks like a race condition. Well, you don't need to compile KDB and DDB, just add makeoptions DEBUG=-g into your kernel config file and rebuild kernel. Then after you got a crash dump you can easy debug it (see FreeBSD Developers Handbok): http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-gdb.html wbr, Nickolas _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
