Kernel Debugging

[Nikita Danilov]

M. Warner Losh writes:
 > In message: <401FD0C6.3000606 at spinnakernet.com>
 >             Sridhar Chellappa <schellap at spinnakernet.com> writes:
 > : How do we debug a freeBSD kernel ? Do we have something similar to 
 > : "KGDB" that linux offers ?
 > 
 > Ironically, we've had kgdb for a number of years longer than Linux.
 > Actually, it is ironic that linux has a in-kernel debugger given
 > Linus' strong resistance to it for years.

As a matter of fact, kgdb is not part of the "mainline" kernel
maintained by Linus. It is available as a separate patch(-set),
included, for example, into -mm series.

 > 
 > There's also ddb that can be used for a lower level of debugging w/o
 > the need for a serial console.
 > 
 > Warner

Nikita.