is_trap_insn(9)

is_trap_insn(9) — Kernel API Manual 💖

okay bestie, welcome to the Kernel API Manual, where we check whether an instruction is out here being a breakpoint instruction. iconic behavior only.

✨ NAME ✨

is_trap_insn — check if instruction is breakpoint instruction.

🌸 SYNOPSIS 🌸

bool is_trap_insn (uprobe_opcode_t *insn );

💅 ARGUMENTS 💅

• insn — instruction to be checked. The default implementation of is_trap_insn returns true if insn is a breakpoint instruction.

🦋 DESCRIPTION 🦋

This function is needed for the case where an architecture has multiple trap instructions (like powerpc). lowkey important for those arch besties with more than one trap instruction in their bag.

🎀 SEE ALSO 🎀

• Kernel file ./kernel/events/uprobes.c: is_swbp_insn(9), set_swbp(9), set_orig_insn(9), uprobe_unregister_nosync(9), uprobe_register(9), uprobe_apply(9), uprobe_get_swbp_addr(9)

xoxo, source/version ./kernel/events, dated October 2026 — and yes, this was is_trap_insn(9) the whole time 💅✨🫶