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of: resolver: Fix device node refcount leakage in of_resolve_phandles()

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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: da56d04c80 ("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>
This commit is contained in:
Zijun Hu
2025-02-24 17:01:55 -06:00
committed by Rob Herring (Arm)
parent 5275e8b529
commit a46a080563
1 changed files with 2 additions and 1 deletions
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3
drivers/of/resolver.c
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@@ -249,8 +249,9 @@ static int adjust_local_phandle_references(const struct device_node *local_fixup
*/
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;