From: Jan Glauber <jang@linux.vnet.ibm.com>
Subject: module: zero mod->init_ro_size after init is freed.

Reset mod->init_ro_size to zero after the init part of a module is unloaded. 
Otherwise we need to check if module->init is NULL in the unprotect functions
in the next patch.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 kernel/module.c |    1 +
 1 file changed, 1 insertion(+)

--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2941,6 +2937,7 @@ SYSCALL_DEFINE3(init_module, void __user
 	module_free(mod, mod->module_init);
 	mod->module_init = NULL;
 	mod->init_size = 0;
+	mod->init_ro_size = 0;
 	mod->init_text_size = 0;
 	mutex_unlock(&module_mutex);