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| author | Alexei Starovoitov <ast@kernel.org> | 2023-03-31 17:51:03 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-03-31 17:51:03 -0700 |
| commit | bdbf1ffe1cf9ba75df39e8f788cde0e9c2641b86 (patch) | |
| tree | ca60a8493bce10b71b653c8c8ad2808237a62955 | |
| parent | d838269c7a56a11ca746d4f268c983355dabf51b (diff) | |
| download | bpf-master.tar.gz | |
this should be MAYBE_NULL.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | kernel/bpf/verifier.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 19d0c39c6d702a..8af3844ed34dbc 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -5391,12 +5391,25 @@ BTF_TYPE_SAFE_RCU(struct task_struct) { struct css_set __rcu *cgroups; struct task_struct __rcu *real_parent; struct task_struct *group_leader; + struct mm_struct *mm; +}; + +BTF_TYPE_SAFE_RCU(struct cgroup) { + struct kernfs_node *kn; }; BTF_TYPE_SAFE_RCU(struct css_set) { struct cgroup *dfl_cgrp; }; +BTF_TYPE_SAFE_RCU(struct mm_struct) { + struct file __rcu *exe_file; +}; + +BTF_TYPE_SAFE_RCU(struct sk_buff) { + struct sock *sk; +}; + /* full trusted: these fields are trusted even outside of RCU CS and never NULL */ BTF_TYPE_SAFE_TRUSTED(struct bpf_iter_meta) { struct seq_file *seq; @@ -5429,7 +5442,10 @@ static bool type_is_rcu(struct bpf_verifier_env *env, const char *field_name, u32 btf_id) { BTF_TYPE_EMIT(BTF_TYPE_SAFE_RCU(struct task_struct)); + BTF_TYPE_EMIT(BTF_TYPE_SAFE_RCU(struct cgroup)); BTF_TYPE_EMIT(BTF_TYPE_SAFE_RCU(struct css_set)); + BTF_TYPE_EMIT(BTF_TYPE_SAFE_RCU(struct mm_struct)); + BTF_TYPE_EMIT(BTF_TYPE_SAFE_RCU(struct sk_buff)); return btf_nested_type_is_trusted(&env->log, reg, field_name, btf_id, "__safe_rcu"); } |