ACPI: property: Fix fwnode refcount leak in acpi_fwnode_graph_parse_endpoint()

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[ Upstream commit 593ee49222 ]

acpi_fwnode_graph_parse_endpoint() calls fwnode_get_parent() to obtain the
parent fwnode but returns without calling fwnode_handle_put() on it. This
potentially leads to a fwnode refcount leak and prevents the parent node
from being released properly.

Call fwnode_handle_put() on the parent fwnode before returning to prevent
the leak from occurring.

Fixes: 3b27d00e7b ("device property: Move fwnode graph ops to firmware specific locations")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
[ rjw: Changelog edits ]
Link: https://patch.msgid.link/20251111075000.1828-1-vulab@iscas.ac.cn
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Haotian Zhang 2025-11-11 15:50:00 +08:00 • committed by Greg Kroah-Hartman

parent e5c2503696

commit 9b2e70df6d

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drivers/acpi/property.c

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