what is kdb
The kdb command has many subcommands for viewing and formatting data structures. KDB - The Kernel Debugger. kdb is an interactive kernel debugger. kdb allows the user to control execution of kernel code (including kernel extensions and device drivers), and to observe and modify the variables and register. It has to be invoked by a special boot image. The kdb is a tool/command for analysing the system dumps. It is used for post-mortem analysis of system dumps, or for monitoring the running kernel. Invoking kdb. kdb is invoked with two arguments when examining a system dump.