kasan_check_range(9)

kasan_check_range(9) 💅

okay so we're in the Kernel API Manual, and this page is literally kasan_check_range(9). Bestie, it's giving "vibe check for memory regions" — it checks a memory region and reports if the access is invalid. No cap. ✨

---

🌸 NAME 🌸

kasan_check_range — check memory region, and report if invalid access. 💖

---

🦋 SYNOPSIS 🦋

bool kasan_check_range (const void *addr , size_t size , bool write ,
       unsigned long ret_ip );

---

🎀 ARGUMENTS 🎀

• addr — the accessed address 📍
• size — the accessed size 📏
• write — true if access is a write access ✍️
• ret_ip — return address 🫶

---

⭐ RETURN ⭐

true if access was valid, false if invalid. periodt. 💅

---

🌈 SEE ALSO 🌈

Kernel file ./mm/kasan/kasan.h, plus the iconic crew: kasan_poison(9), kasan_unpoison(9), and kasan_poison_last_granule(9). iykyk 🔥

---

mwah 💋 this page came from ./mm/kasan, dated October 2026, and it's kasan_check_range(9) — bye bestie 🫶