The VirtualBox documentation shows how to create a VM, if you need it, so I won’t repeat it here.
A virtual serial port is enabled between the host and the guest. When we combine VirtualBox with KGDB on a single machine, the host OS is the ‘source’ machine, while the guest OS (Linux kernel compiled with KGDB enabled) is the “destination”. With virtualisation, however, we can do away with that second machine. However, since version 2.6.26, KGDB has been merged into the mainline, and only needs to be enabled during kernel compilation.Ī typical KGDB setup requires two machines connected by a serial cable: one as a source machine on which debugging is done, and the other (destination) which is being debugged. Earlier, KGDB used to be a bunch of patches that had to be carefully merged into the mainline kernel. It can debug the kernel while it is running, set breakpoints, and step through the code. KGDB is an amazing Linux kernel debugging tool. Readers are expected to have prior knowledge on how to use GDB, know the fundamentals of the Linux kernel, understand custom compilation, apart from knowing how to use VirtualBox or any other virtualisation software. This article shows how to use virtualisation atop a running OS to help debug a live kernel on a single machine. Most likely, the VirtualBox server is not running or failed to start.Debugging an application live has always been easy for application developers, but debugging a live kernel has never been a simple option for kernel developers - it involves multiple machines with serial connections. If I do a release build (without the -build-debug) to avoid the assert (notĪs solution but to investigate the problem further) I get an error whichĬould also (but I'm not sure) be related to a path not being resolvedĬode: Select all Expand view Collapse view Failed to initialize COM or to find the VirtualBox COM server. Initialized (and it has been left empty).
Particular assert is complaining because this global variable hasn't been Understand correctly) used later on to locate other executables, and this Location : /home/user/vbox-src/src/VBox/Runtime/r3/path.cpp(66) int RTPathExecDir(char*, size_t)Īs I've seen in the code, g_szrtProcExePath is "the process path" (if I When running the build I get the following error:Ĭode: Select all Expand view Collapse view $ out/linux.amd64/debug/bin/VirtualBox Prerequisite packages for Ubuntu as the build is succeeding and I don't think (I've omitted the commands related to the setup and installation of the # Build and install the VirtualBox kernel module configure -build-debug -disable-hardening Trying to run the program from the build target directory.Ĭode: Select all Expand view Collapse view. My question is (from theįollowing build commands) if I'm missing some install command or someĮnvironment variable configuration after the build, due to the fact that I'm VirtualBox executable (detailed information later on). The build succeeds but a path related error follows when I try to run the Hardening disabled, following the "Linux build instructions" from the Technical
Hi, I'm trying to build VirtualBox 5.1.18 from source in Ubuntu 16.04 with the