From 620bb0f5f8f9011acd132b1c0e024dfd24037cb8 Mon Sep 17 00:00:00 2001
From: Bob Lee <defru04002@gmail.com>
Date: Tue, 5 Nov 2024 19:48:42 +0800
Subject: [PATCH] Fix missing function call in error handling path

Previously, the code did not call kobject_put when sysfs_create_file
failed, leading to a potential memory leak. This commit adds the missing
kobject_put to ensure proper resource cleanup.
---
 examples/hello-sysfs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/examples/hello-sysfs.c b/examples/hello-sysfs.c
index 7fc0e77..a86f4df 100644
--- a/examples/hello-sysfs.c
+++ b/examples/hello-sysfs.c
@@ -42,6 +42,7 @@ static int __init mymodule_init(void)
 
     error = sysfs_create_file(mymodule, &myvariable_attribute.attr);
     if (error) {
+        kobject_put(mymodule);
         pr_info("failed to create the myvariable file "
                 "in /sys/kernel/mymodule\n");
     }