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PCI: of_property: Return error for int_map allocation failure 

[ Upstream commit e6f7d27df5d208b50cae817a91d128fb434bb12c ]

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

Fixes: 407d1a5192 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Duoming Zhou 2024-03-03 18:57:29 +08:00 committed by Greg Kroah-Hartman
parent 97ba21401b
commit b5f31d1470
1 changed files with 2 additions and 0 deletions
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2
drivers/pci/of_property.c
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@ -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) {