linux-kernel - [PATCH 4.18 118/228] EDAC: Fix memleak in module init error path

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Message-Id: <20181002132507.378073872@linuxfoundation.org>
Date:   Tue,  2 Oct 2018 06:23:35 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Johan Hovold <johan@...nel.org>,
        Denis Kirjanov <kirjanov@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-edac <linux-edac@...r.kernel.org>,
        Borislav Petkov <bp@...e.de>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.18 118/228] EDAC: Fix memleak in module init error path

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <johan@...nel.org>

[ Upstream commit 4708aa85d50cc6e962dfa8acf5ad4e0d290a21db ]

Make sure to use put_device() to free the initialised struct device so
that resources managed by driver core also gets released in the event of
a registration failure.

Signed-off-by: Johan Hovold <johan@...nel.org>
Cc: Denis Kirjanov <kirjanov@...il.com>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-edac <linux-edac@...r.kernel.org>
Fixes: 2d56b109e3a5 ("EDAC: Handle error path in edac_mc_sysfs_init() properly")
Link: http://lkml.kernel.org/r/20180612124335.6420-1-johan@kernel.org
Signed-off-by: Borislav Petkov <bp@...e.de>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/edac/edac_mc_sysfs.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -1075,14 +1075,14 @@ int __init edac_mc_sysfs_init(void)
 
 	err = device_add(mci_pdev);
 	if (err < 0)
-		goto out_dev_free;
+		goto out_put_device;
 
 	edac_dbg(0, "device %s created\n", dev_name(mci_pdev));
 
 	return 0;
 
- out_dev_free:
-	kfree(mci_pdev);
+ out_put_device:
+	put_device(mci_pdev);
  out:
 	return err;
 }