From 63d2d83d21a6e2c6f019da5b2d5cdabe6d1cb951 Mon Sep 17 00:00:00 2001 From: David Vernet Date: Thu, 16 Mar 2023 00:40:25 -0500 Subject: [PATCH] bpf: Mark struct bpf_cpumask as rcu protected struct bpf_cpumask is a BPF-wrapper around the struct cpumask type which can be instantiated by a BPF program, and then queried as a cpumask in similar fashion to normal kernel code. The previous patch in this series makes the type fully RCU safe, so the type can be included in the rcu_protected_type BTF ID list. A subsequent patch will remove bpf_cpumask_kptr_get(), as it's no longer useful now that we can just treat the type as RCU safe by default and do our own if check. Signed-off-by: David Vernet Link: https://lore.kernel.org/r/20230316054028.88924-3-void@manifault.com Signed-off-by: Alexei Starovoitov --- kernel/bpf/verifier.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 60793f793ca6..15b5c5c729f9 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -4599,6 +4599,7 @@ static bool in_rcu_cs(struct bpf_verifier_env *env) BTF_SET_START(rcu_protected_types) BTF_ID(struct, prog_test_ref_kfunc) BTF_ID(struct, cgroup) +BTF_ID(struct, bpf_cpumask) BTF_SET_END(rcu_protected_types) static bool rcu_protected_object(const struct btf *btf, u32 btf_id) -- 2.11.0