| Message ID | 20230316014122.678082-3-void@manifault.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | BPF |
| Headers | show |
| Series | Make struct bpf_cpumask RCU safe | expand |
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)
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, allowing 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 the verifier allows us to use bpf_rcu_read_{un}lock() to get an RCU-safe pointer. Signed-off-by: David Vernet <void@manifault.com> --- kernel/bpf/verifier.c | 1 + 1 file changed, 1 insertion(+)