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