The tg3 module in (gentoo-kerne-2.6.5-r1) kernel 2.6.5 panics on boot on a dual-opteron 248 box with 4G RAM. I copied the following screen output... CS: 0010 DS: 0000 ES: 0000 CR0: 00000008005003b CR2: ffffffffa00c8618 CR3: 00000000037855000 CR4: 00000000000006e0 Process modprobe (pid: 5317, stackpage = 100fbeedd00) stack: ffffffffa00c4758 000000000ffffffea ffffffffa00c4728 ffffffff802ad0c8 0000000000000000 ffffffffa00c4758 ffffffff805ca9c0 ffffffff80306676 0000000000000000 ffffffffa00c46e0 call trace: < ffffffff802ad0c8>{kobject_register+40}<ffffffff80306676>{bus_add_driver+86} <ffffffff802380e0{pci_register_driver+128}<ffffffffa00c06010>{:tg3:tg3_init +16} <ffffffff80157404>{sys_init_module+436}<ffffffff80110e24>{system_call+124> code: 48 89 11 48 4c 08 48 8b 43 38 48 8b 38 48 83 c7 78 e8 31 RIP <ffffffff802ad048>{kobject_add+120} RSP<00000100f9ae3eb8> CR2: ffffffffa00c8618 Reproducible: Always Steps to Reproduce: 1. use livecd 2004.1 to build a system for dual opteron 2. build kernel with genkernel, include tg3 as driver for onboard ethernet 3. reboot with new system Actual Results: See the details of the crash on boot above Expected Results: not crash :-) Jeff Garzik says this may be related to kobject and not tg3. He asked if 2.6.6 crashes. Will check as soon as I can access an ebuild for it.
I just confirmed this happens in development-sources kernel-2.6.6
I just confirmed the problem affects kernel-2.6.7-r1 and r2.
Can you open a bug for this at bugzilla.kernel.org as it is a upstream issue, not a gentoo specific one.