6.12-stable review patch. If anyone has any objections, please let me know.
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From: Zijun Hu quic_zijuhu@quicinc.com
[ Upstream commit a46a0805635d07de50c2ac71588345323c13b2f9 ]
In of_resolve_phandles(), refcount of device node @local_fixups will be increased if the for_each_child_of_node() exits early, but nowhere to decrease the refcount, so cause refcount leakage for the node.
Fix by using __free() on @local_fixups.
Fixes: da56d04c806a ("of/resolver: Switch to new local fixups format.") Cc: stable@vger.kernel.org Signed-off-by: Zijun Hu quic_zijuhu@quicinc.com Link: https://lore.kernel.org/r/20250209-of_irq_fix-v2-9-93e3a2659aa7@quicinc.com [robh: Use __free() instead] Signed-off-by: Rob Herring (Arm) robh@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/of/resolver.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c index fce8bdac45f3e..7d935908b5431 100644 --- a/drivers/of/resolver.c +++ b/drivers/of/resolver.c @@ -249,8 +249,9 @@ static int adjust_local_phandle_references(struct device_node *local_fixups, */ int of_resolve_phandles(struct device_node *overlay) { - struct device_node *child, *local_fixups, *refnode; + struct device_node *child, *refnode; struct device_node *overlay_fixups; + struct device_node __free(device_node) *local_fixups = NULL; struct property *prop; const char *refpath; phandle phandle, phandle_delta;