diff options
| author | David Vernet <void@manifault.com> | 2023-03-16 00:40:25 -0500 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-03-16 12:28:30 -0700 |
| commit | 63d2d83d21a6e2c6f019da5b2d5cdabe6d1cb951 (patch) | |
| tree | dc8cc84007c7cc3777ef5aec93e4fb2387197025 | |
| parent | 77473d1a962f3d4f7ba48324502b6d27b8ef2591 (diff) | |
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 <void@manifault.com>
Link: https://lore.kernel.org/r/20230316054028.88924-3-void@manifault.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | kernel/bpf/verifier.c | 1 |
1 files changed, 1 insertions, 0 deletions
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) |