get_addr_ref_64(9)

💖 NAME 💖

okay so get_addr_ref_64(9) is from the Kernel API Manual, and it's here to obtain a 64-bit linear address ✨. That's the whole name-and-purpose vibe, bestie 💅.

✨ SYNOPSIS ✨

void __user * get_addr_ref_64 (struct insn *insn , struct pt_regs *regs
);

🎀 ARGUMENTS 🎀

• insn — the instruction struct carrying the ModRM and SIB bytes and displacement 🫶
• regs — the structure with register values as seen when entering kernel mode 💖

🦋 DESCRIPTION 🦋

This function is the one you use with 64-bit address encodings when you want to obtain the linear memory address referred by the instruction's ModRM, SIB, displacement bytes and segment base address, as applicable 💅. Like, that's its whole main-character job.

On success, what you get is the linear address referenced by the instruction and registers ✅. On error, it's -1L 😭.

🌈 SEE ALSO 🌈

Kernel file ./arch/x86/lib/insn-eval.c — SEE ALSO refs, in order: is_string_insn(9), insn_has_rep_prefix(9), get_seg_reg_override_idx(9), check_seg_overrides(9), resolve_default_seg(9), resolve_seg_reg(9), get_segment_selector(9), get_reg_offset_16(9), get_desc(9), insn_get_seg_base(9), get_seg_limit(9), insn_get_code_seg_params(9), insn_get_modrm_rm_off(9), insn_get_modrm_reg_off(9), insn_get_modrm_reg_ptr(9), get_seg_base_limit(9), get_eff_addr_reg(9), get_eff_addr_modrm(9), get_eff_addr_modrm_16(9), get_eff_addr_sib(9), get_addr_ref_16(9), get_addr_ref_32(9), insn_get_addr_ref(9), insn_fetch_from_user(9), insn_fetch_from_user_inatomic(9), insn_decode_from_regs(9), insn_decode_mmio(9) 🌸

okay that's the page, bestie — source/version ./arch/x86/lib, date October 2026, bye 💅