If you see a db>
prompt on the console, something unexpected and bad happened
inside the GNU Mach kernel, which it cannot
recover from. (Think of it as the equivalent of a Linux kernel oops, for example.) The db>
prompt is actually the GNU Mach
kernel debugger waiting for your commands. For example, you can then reboot
the system by issuing the reboot
command, or if you want to help analyze the
problem, start by typing in the trace
command, which will display the
function call trace leading to the crash:
0x8007cf1(8088488,5e,40000008,2aa008,0)
0x80071bc(0,0,0,0,0)
0x8006831(24fe00,2000,b,800,0)
This can be decyphered by using:
$ addr2line -i -f -e /boot/gnumach 0x8007cf1 0x80071bc 0x8006831
You can then send us the whole results of the trace
and the
addr2line
commands, as well as
the exact version of the GNU Mach kernel you were running, for further
investigation. More information about the GNU Mach
debugger is available.