regs_get_kernel_argument(9)

💅 regs_get_kernel_argument(9) 💅

okay bestie, this is a page straight outta the Kernel API Manual, and it’s serving kernel-argument realness. The function is regs_get_kernel_argument, and yes, it gets the Nth function argument in the kernel. iconic behavior, honestly.

🎀 NAME 🎀

regs_get_kernel_argument — get Nth function argument in kernel

✨ SYNOPSIS ✨

unsigned long regs_get_kernel_argument (struct pt_regs *regs , unsigned
int n );

🫶 ARGUMENTS 🫶

• regs — pt_regs of that context
• n — function argument number (start from 0)

🌸 DESCRIPTION 🌸

So the doc says regs_get_argument returns the nth argument of the function call. That’s the whole vibe.

Heads up though: this chooses the most probable assignment, and in some cases it can be incorrect. not me warning you twice, but like… bestie, pls know this is a best-effort situation 💀

This is expected to be called from kprobes or ftrace with regs where the top of stack is the return address. that’s the setup, that’s the assignment, no cap.

👑 SEE ALSO 👑

• Kernel file ./arch/x86/include/asm/ptrace.h
• regs_get_register(9)
• regs_within_kernel_stack(9)
• regs_get_kernel_stack_nth_addr(9)
• regs_get_kernel_stack_nth(9)

Source/version: ./arch/x86/include/asm · Date: October 2026 · later bestie, go read the kernel source and slay 💖🦋✨