module: Fix dangling pointer after kfree()

remove_notes_attrs() calls free_notes_attrs(), which in turn calls kfree() on mod->notes_attrs, but fails to set this dangling pointer to NULL. This differs from both module_param_sysfs_remove() and remove_sect_attrs(), which set the pointers to NULL after calling kfree().

---
 kernel/module.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

index 178333c..9ca0923 100644
@@ -1380,8 +1380,10 @@ static void add_notes_attrs(struct module *mod,

const struct load_info *info)

static void remove_notes_attrs(struct module *mod)
{
- if (mod->notes_attrs)
+ if (mod->notes_attrs) {
free_notes_attrs(mod->notes_attrs, mod->notes_attrs->notes);
+ mod->notes_attrs = NULL;
+ }
}

#else

1.7.5.4