From: Yang Yingliang yangyingliang@huawei.com
[ 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 yangyingliang@huawei.com Link: https://lore.kernel.org/r/20221118093604.216371-1-yangyingliang@huawei.com Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- 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 05f3d93cf480..db391dd779c0 100644 --- a/drivers/iommu/amd_iommu_v2.c +++ b/drivers/iommu/amd_iommu_v2.c @@ -591,6 +591,7 @@ static int ppr_notifier(struct notifier_block *nb, unsigned long e, void *data) put_device_state(dev_state);
out: + pci_dev_put(pdev); return ret; }