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bpf: Fix bpf_check_mod_kfunc_call for built-in modules

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When module registering its set is built-in, THIS_MODULE will be NULL,
hence we cannot return early in case owner is NULL.

Fixes: 14f267d95f ("bpf: btf: Introduce helpers for dynamic BTF set registration")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211122144742.477787-3-memxor@gmail.com
This commit is contained in:
Kumar Kartikeya Dwivedi 2021-11-22 20:17:41 +05:30 committed by Andrii Nakryiko
parent d9847eb8be
commit b12f031043
1 changed files with 0 additions and 2 deletions
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kernel/bpf/btf.c
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@ -6371,8 +6371,6 @@ bool bpf_check_mod_kfunc_call(struct kfunc_btf_id_list *klist, u32 kfunc_id,
{
struct kfunc_btf_id_set *s;
if (!owner)
return false;
mutex_lock(&klist->mutex);
list_for_each_entry(s, &klist->list, list) {
if (s->owner == owner && btf_id_set_contains(s->set, kfunc_id)) {