Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 055/131] coresight: coresight_unregister() function cleanup | Date | Mon, 1 Apr 2019 19:02:05 +0200 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit fae54158792aec705620bdc3938d342879204f0c ]
In its current form the code never frees csdev->refcnt allocated in coresight_register(). There is also a problem with csdev->conns that is freed before device_unregister() rather than in the device release function.
This patch addresses both issues by moving kfree(csdev->conns) to coresight_device_release() and freeing csdev->refcnt, also in the same function.
Reported-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/hwtracing/coresight/coresight.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index 84fc60318f79..a7d1edbf3340 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -484,6 +484,8 @@ static void coresight_device_release(struct device *dev) { struct coresight_device *csdev = to_coresight_device(dev); + kfree(csdev->conns); + kfree(csdev->refcnt); kfree(csdev); } @@ -716,7 +718,6 @@ EXPORT_SYMBOL_GPL(coresight_register); void coresight_unregister(struct coresight_device *csdev) { - kfree(csdev->conns); device_unregister(&csdev->dev); } EXPORT_SYMBOL_GPL(coresight_unregister); -- 2.19.1
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