Commit 947e56f8 authored by Geliang Tang's avatar Geliang Tang Committed by Martin KaFai Lau
Browse files

bpf, btf: Check btf for register_bpf_struct_ops 



Similar to the handling in the functions __register_btf_kfunc_id_set()
and register_btf_id_dtor_kfuncs(), this patch uses the newly added
helper check_btf_kconfigs() to handle module with its btf section
stripped.

While at it, the patch also adds the missed IS_ERR() check to fix the
commit f6be98d1 ("bpf, net: switch to dynamic registration")

Fixes: f6be98d1 ("bpf, net: switch to dynamic registration")
Signed-off-by: default avatarGeliang Tang <tanggeliang@kylinos.cn>
Link: https://lore.kernel.org/r/69082b9835463fe36f9e354bddf2d0a97df39c2b.1707373307.git.tanggeliang@kylinos.cn


Signed-off-by: default avatarMartin KaFai Lau <martin.lau@kernel.org>
parent 9e60b0e0

kernel/bpf/btf.c

+3 −1
Original line number Diff line number Diff line
@@ -8882,7 +8882,9 @@ int __register_bpf_struct_ops(struct bpf_struct_ops *st_ops) 


	btf = btf_get_module_btf(st_ops->owner);

	if (!btf)

		return -EINVAL;

		return check_btf_kconfigs(st_ops->owner, "struct_ops");

	if (IS_ERR(btf))

		return PTR_ERR(btf);



	log = kzalloc(sizeof(*log), GFP_KERNEL | __GFP_NOWARN);

	if (!log) {