const char *tname, *ctx_tname;
t = btf_type_by_id(btf, t->type);
+
+ /* KPROBE programs allow bpf_user_pt_regs_t typedef, which we need to
+ * check before we skip all the typedef below.
+ */
+ if (prog_type == BPF_PROG_TYPE_KPROBE) {
+ while (btf_type_is_modifier(t) && !btf_type_is_typedef(t))
+ t = btf_type_by_id(btf, t->type);
+
+ if (btf_type_is_typedef(t)) {
+ tname = btf_name_by_offset(btf, t->name_off);
+ if (tname && strcmp(tname, "bpf_user_pt_regs_t") == 0)
+ return true;
+ }
+ }
+
while (btf_type_is_modifier(t))
t = btf_type_by_id(btf, t->type);
if (!btf_type_is_struct(t)) {