This is a note to let you know that I've just added the patch titled
coresight: Fix ref leak when of_coresight_parse_endpoint() fails
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
coresight-fix-ref-leak-when-of_coresight_parse_endpo.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4befb061f5e7857b1df9b3491b732f729ae25259
Author: James Clark <james.clark@xxxxxxx>
Date: Wed May 29 14:36:26 2024 +0100
coresight: Fix ref leak when of_coresight_parse_endpoint() fails
[ Upstream commit 7fcb9cb2fe47294e16067c3cfd25332c8662a115 ]
of_graph_get_next_endpoint() releases the reference to the previous
endpoint on each iteration, but when parsing fails the loop exits
early meaning the last reference is never dropped.
Fix it by dropping the refcount in the exit condition.
Fixes: d375b356e687 ("coresight: Fix support for sparsely populated ports")
Signed-off-by: James Clark <james.clark@xxxxxxx>
Reported-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Link: https://lore.kernel.org/r/20240529133626.90080-1-james.clark@xxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c
index 9d550f5697fa8..57a009552cc5c 100644
--- a/drivers/hwtracing/coresight/coresight-platform.c
+++ b/drivers/hwtracing/coresight/coresight-platform.c
@@ -297,8 +297,10 @@ static int of_get_coresight_platform_data(struct device *dev,
continue;
ret = of_coresight_parse_endpoint(dev, ep, pdata);
- if (ret)
+ if (ret) {
+ of_node_put(ep);
return ret;
+ }
}
return 0;
