It reproduced in 2.6.14 kernel - I haven't newer kernel on me, but it seems that this bug still open in later kernels. System completely freeses whilst changing Broadcom bcm4401 MAC address (b44 module) in case the card haven't "upped" by ifconfig at least one time before. It's because of the bcm4401's MAC and PCI hardware blocks haven't powered yet after module inserting. Steps to Reproduce: 1.boot the system, login as root, modprobe b44 (if not loaded yet) 2.ifconfig ethX hw ether 01:02:03:04:05:06:07 3.freeeeeze! Press power button to reboot :-)
Created attachment 1512 [details] b44 (broadcom ethernet) set MAC bugfix
Fixed in kernel-image-std26-*-2.6.16-alt7.