set_swbp(9)

💅 set_swbp(9) 💅

okay bestie, welcome to the Kernel API Manual corner where we're decoding set_swbp(9) together. no cap, this one is short but it still matters 💖

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✨ NAME ✨

set_swbp — store breakpoint at a given address. that's the whole assignment, periodt 🎀

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🌸 SYNOPSIS 🌸

int set_swbp (struct arch_uprobe *auprobe , struct vm_area_struct *vma ,
       unsigned long vaddr );

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🦋 ARGUMENTS 🦋

• auprobe — arch specific probepoint information. literally the arch-specific probepoint info 🧚
• vma — the probed virtual memory area. the vma getting probed, iykyk 🌸
• vaddr — the virtual address to insert the opcode. that's where the opcode goes 💅

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🔥 DESCRIPTION 🔥

For mm mm, store the breakpoint instruction at vaddr. Return 0 (success) or a negative errno.

like—that's it, bestie. store the breakpoint instruction at vaddr, then return 0 for success or a negative errno. no extra plot twists 😭

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🌈 SEE ALSO 🌈

• Kernel file ./kernel/events/uprobes.c — the whole linked-up squad: is_swbp_insn(9), is_trap_insn(9), set_orig_insn(9), uprobe_unregister_nosync(9), uprobe_register(9), uprobe_apply(9), uprobe_get_swbp_addr(9). go read the friends too, fr fr 👑

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source/version is ./kernel/events, dated October 2026 — bye bestie, go insert that opcode responsibly 🫶✨