linux-kernel - [PATCH 1/2] dmi-id: don't free dev structure after calling device

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1468483283-84766-2-git-send-email-allen_hung@dell.com>
Date:	Thu, 14 Jul 2016 16:01:22 +0800
From:	Allen Hung <allen_hung@...l.com>
To:	Jean Delvare <jdelvare@...e.com>, linux-kernel@...r.kernel.org
Cc:	Mario Limonciello <mario_limonciello@...l.com>,
	Allen Hung <allen_hung@...l.com>
Subject: [PATCH 1/2] dmi-id: don't free dev structure after calling device_register

dmi_dev is freed in error exit code but, according to the document
of device_register, it should never directly free device structure
after calling this function, even if it returned an error! Use
put_device() instead.

Signed-off-by: Allen Hung <allen_hung@...l.com>
---
 drivers/firmware/dmi-id.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c
index 94a58a0..44c0139 100644
--- a/drivers/firmware/dmi-id.c
+++ b/drivers/firmware/dmi-id.c
@@ -229,14 +229,14 @@ static int __init dmi_id_init(void)
 
 	ret = device_register(dmi_dev);
 	if (ret)
-		goto fail_free_dmi_dev;
+		goto fail_put_dmi_dev;
 
 	return 0;
 
-fail_free_dmi_dev:
-	kfree(dmi_dev);
-fail_class_unregister:
+fail_put_dmi_dev:
+	put_device(dmi_dev);
 
+fail_class_unregister:
 	class_unregister(&dmi_class);
 
 	return ret;
-- 
2.7.4