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-rw-r--r--kernel/bpf/verifier.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 5d42db05315e..7360f04f9ec7 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -11063,6 +11063,7 @@ enum special_kfunc_type {
KF_bpf_preempt_disable,
KF_bpf_preempt_enable,
KF_bpf_iter_css_task_new,
+ KF_bpf_session_cookie,
};
BTF_SET_START(special_kfunc_set)
@@ -11123,6 +11124,7 @@ BTF_ID(func, bpf_iter_css_task_new)
#else
BTF_ID_UNUSED
#endif
+BTF_ID(func, bpf_session_cookie)
static bool is_kfunc_ret_null(struct bpf_kfunc_call_arg_meta *meta)
{
@@ -12294,6 +12296,11 @@ static int check_kfunc_call(struct bpf_verifier_env *env, struct bpf_insn *insn,
}
}
+ if (meta.func_id == special_kfunc_list[KF_bpf_session_cookie]) {
+ meta.r0_size = sizeof(u64);
+ meta.r0_rdonly = false;
+ }
+
if (is_bpf_wq_set_callback_impl_kfunc(meta.func_id)) {
err = push_callback_call(env, insn, insn_idx, meta.subprogno,
set_timer_callback_state);