From 6e501b3fd7a2e1c4372d72bc70717aaca2beb8a5 Mon Sep 17 00:00:00 2001 From: Yang Yingliang Date: Fri, 18 Nov 2022 17:36:04 +0800 Subject: [PATCH] iommu/amd: Fix pci device refcount leak in ppr_notifier() [ Upstream commit 6cf0981c2233f97d56938d9d61845383d6eb227c ] As comment of pci_get_domain_bus_and_slot() says, it returns a pci device with refcount increment, when finish using it, the caller must decrement the reference count by calling pci_dev_put(). So call it before returning from ppr_notifier() to avoid refcount leak. Fixes: daae2d25a477 ("iommu/amd: Don't copy GCR3 table root pointer") Signed-off-by: Yang Yingliang Link: https://lore.kernel.org/r/20221118093604.216371-1-yangyingliang@huawei.com Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/amd/iommu_v2.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/amd/iommu_v2.c b/drivers/iommu/amd/iommu_v2.c index a45c5536d2506..c96cf9b217197 100644 --- a/drivers/iommu/amd/iommu_v2.c +++ b/drivers/iommu/amd/iommu_v2.c @@ -588,6 +588,7 @@ out_drop_state: put_device_state(dev_state); out: + pci_dev_put(pdev); return ret; } -- 2.30.2