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>

diff --git a/kernel/module.c b/kernel/module.c
index 523c40b..92112c9 100644 (file)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2935,6 +2935,7 @@ SYSCALL_DEFINE3(init_module, void __user *, umod,
        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);