instrument_get_user(9)

💅 instrument_get_user(9)

okay so bestie, welcome to the Kernel API Manual — yes the whole manual, and this lil page is about instrument_get_user. it's a one-function girlie but she MATTERS. 🎀

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✨ NAME ✨

instrument_get_user — adds instrumentation to get_user()-like macros 🫶

like literally that's her whole job and she does it flawlessly, no cap.

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🌸 SYNOPSIS 🌸

instrument_get_user (to );

that's it. that's the whole call. short and iconic, she ate 💅

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🦋 ARGUMENTS 🦋

• to — the destination variable. and hear me when i say this: it may not be address-taken. like, do not take its address. that's the rule. it's giving "hands off the pointer," iykyk 🙈

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💖 DESCRIPTION 💖

okay so here's the tea. get_user and friends are fragile 😭 — like genuinely delicate, handle-with-care, do-not-drop energy.

because of that fragility, it may depend on the implementation whether the instrumentation happens before or after the data is copied from the userspace. so like. the ordering vibe check is implementation-dependent. ngl that's just how it is — she's not promising you a fixed order, she's promising you instrumentation. periodt. ✨

lowkey important: "may depend on the implementation" means you can't assume the order. don't build your whole personality on an assumption, bestie 💀

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🔥 SEE ALSO 🔥

• Kernel file ./include/linux/instrumented.h
• instrument_read(9)
• instrument_write(9)
• instrument_read_write(9)
• instrument_atomic_read(9)
• instrument_atomic_write(9)
• instrument_atomic_read_write(9)
• instrument_copy_to_user(9)
• instrument_copy_from_user_before(9)
• instrument_copy_from_user_after(9)
• instrument_memcpy_before(9)
• instrument_memcpy_after(9)
• instrument_put_user(9)

the whole instrumented.h friend group honestly, she's got a whole squad 🧚💜

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and that's the page!! 💫 brought to you straight out of ./include/linux, dated October 2026 — so like, from the future bestie, we love a timeless icon 👑⏳ go be great with your instrumentation 🌈⭐