kallsyms, and Kernel APIs

This guide explains four practical techniques—parsing System.map, using vmlinux with nm/objdump/readelf, reading /proc/kallsyms, and calling kernel lookup APIs—to locate the exact address of any Linux kernel function for deeper debugging.

DebuggingKernelLinux

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How to Quickly Find Linux Kernel Function Addresses Using System.map, vmlinux, /proc/kallsyms, and Kernel APIs

Liangxu Linux

Apr 8, 2025 · Backend Development

How to Find Linux Kernel Function Addresses with System.map, vmlinux, /proc/kallsyms and Kernel APIs

This guide explains four practical ways to obtain Linux kernel function addresses—using the System.map symbol table, inspecting the vmlinux image with tools like nm, objdump and readelf, reading the live /proc/kallsyms file, and calling kernel APIs such as kallsyms_lookup_name and sprint_symbol.

DebuggingKernelLinux

0 likes · 7 min read

How to Find Linux Kernel Function Addresses with System.map, vmlinux, /proc/kallsyms and Kernel APIs