In module_add_modinfo_attrs if sysfs_create_file
fails, we forget to free allocated modinfo_attrs
and roll back the sysfs files.

Fixes: 03e88ae1b13d ("[PATCH] fix module sysfs files reference counting")
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 kernel/module.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/kernel/module.c b/kernel/module.c
index 0b9aa8a..7da73c4 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1714,15 +1714,29 @@ static int module_add_modinfo_attrs(struct module *mod)
                return -ENOMEM;
 
        temp_attr = mod->modinfo_attrs;
-       for (i = 0; (attr = modinfo_attrs[i]) && !error; i++) {
+       for (i = 0; (attr = modinfo_attrs[i]); i++) {
                if (!attr->test || attr->test(mod)) {
                        memcpy(temp_attr, attr, sizeof(*temp_attr));
                        sysfs_attr_init(&temp_attr->attr);
                        error = sysfs_create_file(&mod->mkobj.kobj,
                                        &temp_attr->attr);
+                       if (error)
+                               goto error_out;
                        ++temp_attr;
                }
        }
+
+       return 0;
+
+error_out:
+       for (; (attr = &mod->modinfo_attrs[i]) && i >= 0; i--) {
+               if (!attr->attr.name)
+                       break;
+               sysfs_remove_file(&mod->mkobj.kobj, &attr->attr);
+               if (attr->free)
+                       attr->free(mod);
+       }
+       kfree(mod->modinfo_attrs);
        return error;
 }
 
-- 
1.8.3.1


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