On Tue, Feb 28, 2017 at 10:50:04PM +0800, Jia-Ju Bai wrote: > After the rebooting of the crash, I do not see useful messages in > /var/log/messages or using "dmesg" command. I find two files in /var/crash: > netbsd.0.gz and netbsd.0.core.gz. And I uncompress them and open them using > "vim", but they are not readable :(
Hmm, in -current savecore(8), which is the utility saving the dump, will log the panic message. In general, for driver developement, using -current is not a bad idea. The file is a kvm target for gdb, but I don't know how well it works with modules in netbsd 7. > So how to read crash log of the system? > And how to let my "printf" messages show on the screen (or show on another > computer via serial port) ? Use serial console, it is the easiest way for kernel developement. See "man boot.cfg" and search for consdev. Martin
