linux-kernel - [PATCH AUTOSEL 4.9 56/57] EDAC: Fix memleak in module init error path

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Message-ID: <20180917030340.378-56-alexander.levin@microsoft.com>
Date:   Mon, 17 Sep 2018 03:04:18 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     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 AUTOSEL 4.9 56/57] EDAC: Fix memleak in module init error path

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>
---
 drivers/edac/edac_mc_sysfs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 4e0f8e720ad9..40d792e96b75 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -1059,14 +1059,14 @@ 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;
 }
-- 
2.17.1