5.15-stable review patch. If anyone has any objections, please let me know.
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From: James Clark james.clark@arm.com
[ 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@arm.com Reported-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Signed-off-by: Suzuki K Poulose suzuki.poulose@arm.com Link: https://lore.kernel.org/r/20240529133626.90080-1-james.clark@arm.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hwtracing/coresight/coresight-platform.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index c594f45319fc5..dfb8022c4da1a 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -323,8 +323,10 @@ 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;