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-rw-r--r--kernel/module.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 281172f01e9..0351625767b 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2159,6 +2159,29 @@ const struct exception_table_entry *search_module_extables(unsigned long addr)
return e;
}
+/*
+ * Is this a valid module address?
+ */
+int is_module_address(unsigned long addr)
+{
+ unsigned long flags;
+ struct module *mod;
+
+ spin_lock_irqsave(&modlist_lock, flags);
+
+ list_for_each_entry(mod, &modules, list) {
+ if (within(addr, mod->module_core, mod->core_size)) {
+ spin_unlock_irqrestore(&modlist_lock, flags);
+ return 1;
+ }
+ }
+
+ spin_unlock_irqrestore(&modlist_lock, flags);
+
+ return 0;
+}
+
+
/* Is this a valid kernel address? We don't grab the lock: we are oopsing. */
struct module *__module_text_address(unsigned long addr)
{