diff --git a/kernel/kpm/compact.c b/kernel/kpm/compact.c
index 40d26377..187be99d 100644
--- a/kernel/kpm/compact.c
+++ b/kernel/kpm/compact.c
@@ -70,11 +70,12 @@ struct CompactProxySymbol proxy_symbol[] = {
 
 static unsigned long sukisu_find_proxy_symbol(const char* name) {
     // 查不到就查查兼容的符号
+    int i;
     for(i = 0; i < (sizeof(proxy_symbol) / sizeof(struct CompactProxySymbol)); i++) {
         struct CompactProxySymbol* symbol = &alias_symbol[i];
         if(strcmp(name, symbol->symbol_name) == 0) {
             if(symbol->cached_address == NULL) {
-                symbol->cached_address = kallsyms_lookup_name(name);
+                symbol->cached_address = (void*) kallsyms_lookup_name(name);
             }
             if(symbol->cached_address != NULL) {
                 return (unsigned long) &symbol->cached_address;
diff --git a/kernel/kpm/kpm.c b/kernel/kpm/kpm.c
index a703466d..5817f194 100644
--- a/kernel/kpm/kpm.c
+++ b/kernel/kpm/kpm.c
@@ -1271,6 +1271,14 @@ bool kpm_is_allow_address(unsigned long addr)
     return allow;
 }
 
+#ifndef CONFIG_ARCH_STACKWALK
+struct stack_trace {
+	unsigned int nr_entries, max_entries;
+	unsigned long *entries;
+	unsigned int skip;	/* input argument: How many entries to skip */
+};
+#endif
+
 static struct kprobe dump_stack_kp = {
     .symbol_name = "dump_stack",
 };