is_module_address(9)

💖 is_module_address — kernel API manual, but make it make sense 💖

okay so real talk, we're in the is_module_address(9) page of the Kernel API Manual, and honestly? it's a short one. a little baby page. but it's important, so grab your iced coffee and let's go 🍓

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✨ NAME ✨

is_module_address — literally just: is this address inside a module? that's it. that's the whole vibe check 🫶

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✨ SYNOPSIS ✨

bool is_module_address (unsigned long addr );

it hands you back a bool, no cap — so you're getting a yes or a no, nothing in between 💅

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🌸 ARGUMENTS 🌸

• addr — the address you wanna check. that's the one. that's the address. drop it in and let the function do its little investigation 🔍

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🦋 DESCRIPTION 🦋

so here's the thing bestie — if what you actually wanna know is whether the address is code and not data, then you don't want this function, you want to go see is_module_text_address. that's the one for the code-only question. this page is just pointing you there, and honestly? respect. it knows its limits 😌

no like genuinely, that's the whole description. short king behavior 👑

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👑 SEE ALSO 👑

okay this is the part where it goes off. the kernel file to look at is ./kernel/module/main.c, and then there's a whole friend group of pages:

• find_any_unique_sec(9)
• is_module_percpu_address(9)
• module_refcount(9)
• verify_module_namespace(9)
• elf_validity_ehdr(9)
• elf_validity_cache_sechdrs(9)
• elf_validity_cache_secstrings(9)
• elf_validity_cache_index_info(9)
• elf_validity_cache_index_mod(9)
• elf_validity_cache_index_sym(9)
• elf_validity_cache_index_str(9)
• elf_validity_cache_index_versions(9)
• elf_validity_cache_index(9)
• elf_validity_cache_strtab(9)
• __module_address(9)
• is_module_text_address(9)
• __module_text_address(9)

like, the whole elf_validity_cache_* squad showed up. iconic. they ate and left no crumbs 🌈⭐

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and that's the page!! mwah 💋 signed off from ./kernel/module, dated October 2026, author of record is_module_address(9) — okay bye, ily, go check your module addresses responsibly 🎀💜