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authorEvgeny Novikov <novikov@ispras.ru>2020-07-23 19:46:51 +0200
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2020-08-06 13:58:40 +0200
commitf45882cfb152f5d3a421fd58f177f227e44843b9 (patch)
treeb373633380a287f8b206164be2c6729fc7191940
parent602649eadaa0c977e362e641f51ec306bc1d365d (diff)
media: camss: fix memory leaks on error handling paths in probemedia/v5.9-1
camss_probe() does not free camss on error handling paths. The patch introduces an additional error label for this purpose. Besides, it removes call of v4l2_async_notifier_cleanup() from camss_of_parse_ports() since its caller, camss_probe(), cleans up all its resources itself. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Evgeny Novikov <novikov@ispras.ru> Co-developed-by: Anton Vasilyev <vasilyev@ispras.ru> Signed-off-by: Anton Vasilyev <vasilyev@ispras.ru> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
-rw-r--r--drivers/media/platform/qcom/camss/camss.c30
1 files changed, 20 insertions, 10 deletions
diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index 3fdc9f964a3c..2483641799df 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -504,7 +504,6 @@ static int camss_of_parse_ports(struct camss *camss)
return num_subdevs;
err_cleanup:
- v4l2_async_notifier_cleanup(&camss->notifier);
of_node_put(node);
return ret;
}
@@ -835,29 +834,38 @@ static int camss_probe(struct platform_device *pdev)
camss->csid_num = 4;
camss->vfe_num = 2;
} else {
- return -EINVAL;
+ ret = -EINVAL;
+ goto err_free;
}
camss->csiphy = devm_kcalloc(dev, camss->csiphy_num,
sizeof(*camss->csiphy), GFP_KERNEL);
- if (!camss->csiphy)
- return -ENOMEM;
+ if (!camss->csiphy) {
+ ret = -ENOMEM;
+ goto err_free;
+ }
camss->csid = devm_kcalloc(dev, camss->csid_num, sizeof(*camss->csid),
GFP_KERNEL);
- if (!camss->csid)
- return -ENOMEM;
+ if (!camss->csid) {
+ ret = -ENOMEM;
+ goto err_free;
+ }
camss->vfe = devm_kcalloc(dev, camss->vfe_num, sizeof(*camss->vfe),
GFP_KERNEL);
- if (!camss->vfe)
- return -ENOMEM;
+ if (!camss->vfe) {
+ ret = -ENOMEM;
+ goto err_free;
+ }
v4l2_async_notifier_init(&camss->notifier);
num_subdevs = camss_of_parse_ports(camss);
- if (num_subdevs < 0)
- return num_subdevs;
+ if (num_subdevs < 0) {
+ ret = num_subdevs;
+ goto err_cleanup;
+ }
ret = camss_init_subdevices(camss);
if (ret < 0)
@@ -936,6 +944,8 @@ err_register_entities:
v4l2_device_unregister(&camss->v4l2_dev);
err_cleanup:
v4l2_async_notifier_cleanup(&camss->notifier);
+err_free:
+ kfree(camss);
return ret;
}

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