This is a note to let you know that I've just added the patch titled powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: powerpc-cell-axon_msi-fix-refcount-leak-in-setup_msi.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit d23a1b0268d32f41244d5e6cc24e08502132f2ac Author: Miaoqian Lin <linmq006@xxxxxxxxx> Date: Sun Jun 5 10:51:29 2022 +0400 powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address [ Upstream commit df5d4b616ee76abc97e5bd348e22659c2b095b1c ] of_get_next_parent() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() in the error path to avoid refcount leak. Fixes: ce21b3c9648a ("[CELL] add support for MSI on Axon-based Cell systems") Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx> Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20220605065129.63906-1-linmq006@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c index 8b55c5f19d4c..e1e6ca243628 100644 --- a/arch/powerpc/platforms/cell/axon_msi.c +++ b/arch/powerpc/platforms/cell/axon_msi.c @@ -230,6 +230,7 @@ static int setup_msi_msg_address(struct pci_dev *dev, struct msi_msg *msg) if (!prop) { dev_dbg(&dev->dev, "axon_msi: no msi-address-(32|64) properties found\n"); + of_node_put(dn); return -ENOENT; }