From e6f7d27df5d208b50cae817a91d128fb434bb12c Mon Sep 17 00:00:00 2001
From: Duoming Zhou <duoming@zju.edu.cn>
Date: Sun, 3 Mar 2024 18:57:29 +0800
Subject: [PATCH] PCI: of_property: Return error for int_map allocation failure

Return -ENOMEM from of_pci_prop_intr_map() if kcalloc() fails to prevent a
NULL pointer dereference in this case.

Fixes: 407d1a51921e ("PCI: Create device tree node for bridge")
Link: https://lore.kernel.org/r/20240303105729.78624-1-duoming@zju.edu.cn
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
 drivers/pci/of_property.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/of_property.c b/drivers/pci/of_property.c
index c2c7334152bc0..03539e5053720 100644
--- a/drivers/pci/of_property.c
+++ b/drivers/pci/of_property.c
@@ -238,6 +238,8 @@ static int of_pci_prop_intr_map(struct pci_dev *pdev, struct of_changeset *ocs,
 		return 0;
 
 	int_map = kcalloc(map_sz, sizeof(u32), GFP_KERNEL);
+	if (!int_map)
+		return -ENOMEM;
 	mapp = int_map;
 
 	list_for_each_entry(child, &pdev->subordinate->devices, bus_list) {
-- 
2.30.2