bpf_obj_new(9)

💖 NAME 💖

bpf_obj_new — bestie, this is the one that allocates an object described by program BTF ✨

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🌸 SYNOPSIS 🌸

__bpf_kfunc void * bpf_obj_new (u64 local_type_id__k , struct btf_struct_meta *meta );

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🎀 ARGUMENTS 🎀

• local_type_id__k — the type ID, but in program BTF. That's the ID you're feeding in, queen.
• meta — the verifier-supplied struct metadata. The verifier hands this to you, okay? It's a whole thing.

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🦋 DESCRIPTION 🦋

Okay so picture this: you call this bad boy and it allocates an object of the type identified by local_type_id__k, then initializes its special fields. Like, it does the whole glow-up for you 💅

BPF programs can use bpf_core_type_id_local to provide local_type_id__k — that's literally the whole trick, iykyk.

And the meta? The verifier rewrites meta. BPF programs do not set it. Nope. Not your job, bestie. Don't touch it 🙈

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⭐ RETURN ⭐

A pointer to the allocated object, or NULL on failure. That's it, that's the vibe check 😭

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🔥 SEE ALSO 🔥

Kernel file ./kernel/bpf/helpers.c, plus the entire friend group:

• bpf_percpu_obj_new(9)
• bpf_obj_drop(9)
• bpf_percpu_obj_drop(9)
• bpf_refcount_acquire(9)
• bpf_list_push_front(9)
• bpf_list_push_back(9)
• bpf_rbtree_add(9)
• bpf_task_acquire(9)
• bpf_task_release(9)
• bpf_cgroup_acquire(9)
• bpf_cgroup_release(9)
• bpf_cgroup_ancestor(9)
• bpf_cgroup_from_id(9)
• bpf_task_under_cgroup(9)
• bpf_task_get_cgroup1(9)
• bpf_task_from_pid(9)
• bpf_task_from_vpid(9)
• bpf_dynptr_slice(9)
• bpf_dynptr_slice_rdwr(9)
• bpf_dynptr_copy(9)
• bpf_dynptr_memset(9)
• bpf_iter_bits_new(9)
• bpf_iter_bits_next(9)
• bpf_iter_bits_destroy(9)
• bpf_copy_from_user_str(9)
• bpf_copy_from_user_task_str(9)
• bpf_strcmp(9)
• bpf_strcasecmp(9)
• bpf_strnchr(9)
• bpf_strchr(9)
• bpf_strchrnul(9)
• bpf_strrchr(9)
• bpf_strnlen(9)
• bpf_strlen(9)
• bpf_strspn(9)
• bpf_strcspn(9)
• bpf_strstr(9)
• bpf_strcasestr(9)
• bpf_strnstr(9)
• bpf_strncasestr(9)
• bpf_lookup_user_key(9)
• bpf_lookup_system_key(9)
• bpf_key_put(9)
• bpf_verify_pkcs7_signature(9)
• bpf_task_work_schedule_signal(9)
• bpf_task_work_schedule_resume(9)
• bpf_timer_cancel_async(9)

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That's the whole page, bestie 🫶 it lives in ./kernel/bpf, it's dated October 2026, and it slayed the whole way through. Periodt. 👑