kobject: kobj->k_name verification fix

[mirror_ubuntu-jammy-kernel.git] / kernel / module.c

diff --git a/kernel/module.c b/kernel/module.c
index 8a94e054230c07abb5371c8e8b4e369f3e8476bd..225501f620ff2bf4ef7b63fdcc1bbd585f85b9bc 100644 (file)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -653,20 +653,11 @@ static void wait_for_zero_refcount(struct module *mod)
        mutex_lock(&module_mutex);
 }
 
-asmlinkage long
-sys_delete_module(const char __user *name_user, unsigned int flags)
+int delete_module(const char *name, unsigned int flags)
 {
        struct module *mod;
-       char name[MODULE_NAME_LEN];
        int ret, forced = 0;
 
-       if (!capable(CAP_SYS_MODULE))
-               return -EPERM;
-
-       if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0)
-               return -EFAULT;
-       name[MODULE_NAME_LEN-1] = '\0';
-
        if (mutex_lock_interruptible(&module_mutex) != 0)
                return -EINTR;
 
@@ -727,6 +718,21 @@ sys_delete_module(const char __user *name_user, unsigned int flags)
        return ret;
 }
 
+asmlinkage long
+sys_delete_module(const char __user *name_user, unsigned int flags)
+{
+       char name[MODULE_NAME_LEN];
+
+       if (!capable(CAP_SYS_MODULE))
+               return -EPERM;
+
+       if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0)
+               return -EFAULT;
+       name[MODULE_NAME_LEN-1] = '\0';
+
+       return delete_module(name, flags);
+}
+
 static void print_unload_info(struct seq_file *m, struct module *mod)
 {
        struct module_use *use;