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Prerequisites

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Preface

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Debug with GDB

TBD.

echo "add-auto-load-safe-path path/to/linux-v.x.y/vmlinux-gdb.py" >> ~/.gdbinit

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Debug with VSCode

Create the file linux-5.15.57/.vscode/launch.json and fill in the following code :

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "kernel-debug",
            "type": "cppdbg",
            "request": "launch",
            "miDebuggerServerAddress": ":1234", // fill in the port corresponding to gdb
            "program": "${workspaceFolder}/vmlinux",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "logging": {
                "engineLogging": false
            },
            "MIMode": "gdb",
        }
    ]
}

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References

• Linux Kernel Documentation - Debugging kernel and modules via gdb (opens new window)

• Debugging Linux kernels with Qemu and GDB (opens new window)

• Teach you how to debug Linux kernel with VSCode + Qemu + GDB (opens new window)

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