elf_validity...he_index_str(9)

💅 elf_validity_cache_index_str(9) — like, the strtab vibe check 💅

okay so real talk, this one lives in the Kernel API Manual and it's honestly such a little icon. it does exactly one thing and it does it flawlessly. main character energy fr fr ✨

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🌸 NAME 🌸

elf_validity_cache_index_str — validate and cache the strtab index, bestie. that's it. that's the whole job. and she ate 💅

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🎀 SYNOPSIS 🎀

int elf_validity_cache_index_str (struct load_info *info );

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🦋 ARGUMENTS 🦋

• info — the load info you're caching the strtab index into 🫶 lowkey important: it must already have load_info->sechdrs and load_info->secstrings populated. and like, it also must have load_info->index.sym populated. no skipping steps, okay? the prerequisites are the prerequisites 💀

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✨ DESCRIPTION ✨

so here's the tea ☕ — this function goes and looks at the symbol table's associated string table (its bestie, if you will), makes sure it's actually in-bounds and that it's of type SHT_STRTAB, and then caches it. that's the whole plot. short, sweet, iconic 👑

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🌈 RETURN 🌈

• 0 if it's valid — slay ✅
• -ENOEXEC on failure — not slay, but at least it told you 😭

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💖 SEE ALSO 💖

the whole friend group, no cap:

• Kernel file ./kernel/module/main.c
• 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_versions(9)
• elf_validity_cache_index(9)
• elf_validity_cache_strtab(9)
• is_module_address(9)
• __module_address(9)
• is_module_text_address(9)
• __module_text_address(9)

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ngl if you made it this far you're basically a kernel dev now. go off 💜

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and that's the page!! brought to you by ./kernel/module, dated October 2026 — see you in the next one, bestie 🧚‍♀️💖🌸