>> Here is the info from the machine (trace, ps and dmesg). >> >> Stopped at bus_space_write_2+0x28: popl %ebp
> There should be a line above this, most likely a uvm fault, please include that line as well - it has important information. > 'sh reg' might be useful too. Nope, no such line. The process goes like this: ... blue boot text ... starting file system checks ... Setting tty flags pf enabled starting network Stopped at bus_space_write_2+0x28: popl %ebp ddb{1}> that's it. And 'sh reg' output is: ddb{1}>sh reg ds 0xd0d10010 end+0x21ee0c es 0xd0520010 uvm_fault+0x460 fs 0xd0d10058 end+0x21ee54 gs 0xd7a10010 end+0x6f1ee0c edi 0xd1255000 end+0x763dfc esi 0 ebp 0xd7a1bc4c end+0x6f2aa48 ebx 0 edx 0x1008 ecx 0 eax 0xc04 eip 0xd056adb8 bus_space_write_2+0x28 cs 0x8 eflags 0x202 esp 0xd7a1bc4c end+0x6f2aa48 ss 0xd7a10010 end+0x6f1ee0c bus_space_write_2+0x28: popl %ebp ddb{1}>