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If we trace them, the recursion will happen. Let's add them into the btf id deny list. Signed-off-by: Yafang Shao --- kernel/bpf/verifier.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 5dae11e..83fb94f 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -18645,6 +18645,10 @@ int bpf_check_attach_target(struct bpf_verifier_log *log, BTF_ID(func, preempt_count_add) BTF_ID(func, preempt_count_sub) #endif +#ifdef CONFIG_PREEMPT_RCU +BTF_ID(func, __rcu_read_lock) +BTF_ID(func, __rcu_read_unlock) +#endif BTF_SET_END(btf_id_deny) static bool can_be_sleepable(struct bpf_prog *prog)