kfree(9)

okay bestie, welcome to the Kernel API Manual page for kfree(9) — manual name folded in, we're being cute about it 💖. This is the "free the memory you got earlier" girlie, and she's here to help.

✨ NAME ✨

kfree — free previously allocated memory. That's it, that's the vibe: give back memory that was allocated earlier. 🫶

🛠 SYNOPSIS 🛠

void kfree (const void *object );

🎀 ARGUMENTS 🎀

• object — a pointer returned by kmalloc, kmalloc_nolock, or kmem_cache_alloc. Like, it's the exact pointer energy we're looking for ✨.

🦋 DESCRIPTION 🦋

If object is NULL, no operation is performed. Periodt — nothing happens, no cap. 💅

👀 SEE ALSO 👀

• Kernel file ./mm/slub.c enum slab_flags(9)
• kmem_cache_alloc_node(9)
• kmem_cache_free(9)
• ksize(9)
• kvfree(9)
• kvfree_atomic(9)
• kvfree_sensitive(9)
• kmem_cache_alloc_bulk(9)

These are the besties in the same memory-management group chat — go check them out 🧚💜.

and that's the whole page, bestie! this page's source/version is ./mm and it's dated October 2026 — mwah 💋✨