linux-kernel - [PATCH 01/20] coresight: Fix memory leak in coresight

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Message-Id: <1528235011-30691-2-git-send-email-suzuki.poulose@arm.com>
Date:   Tue,  5 Jun 2018 22:43:12 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     linux-arm-kernel@...ts.infradead.org
Cc:     mathieu.poirier@...aro.org, robh@...nel.org,
        frowand.list@...il.com, mark.rutland@....com, sudeep.holla@....com,
        arm@...nel.org, linux-kernel@...r.kernel.org, matt.sealey@....com,
        john.horley@....com, charles.garcia-tobin@....com,
        coresight@...ts.linaro.org, devicetree@...r.kernel.org,
        mike.leach@...aro.org, Suzuki K Poulose <suzuki.poulose@....com>,
        Arvind Yadav <arvind.yadav.cs@...il.com>
Subject: [PATCH 01/20] coresight: Fix memory leak in coresight_register

commit 6403587a930c ("coresight: use put_device() instead of kfree()")
introduced a memory leak where, if we fail to register the device
for coresight_device, we don't free the "coresight_device" object,
which was allocated via kzalloc(). Fix this by jumping to the
appropriate error path.

Fixes: commit 6403587a930c ("coresight: use put_device() instead of kfree()")
Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Arvind Yadav <arvind.yadav.cs@...il.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 drivers/hwtracing/coresight/coresight.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index 4969b32..2893cfe 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -1020,7 +1020,7 @@ struct coresight_device *coresight_register(struct coresight_desc *desc)
 	ret = device_register(&csdev->dev);
 	if (ret) {
 		put_device(&csdev->dev);
-		goto err_kzalloc_csdev;
+		goto err_kzalloc_refcnts;
 	}
 
 	mutex_lock(&coresight_mutex);
-- 
2.7.4