From 19032628bd7ce8a39cdf0521b6418bf88c25ec80 Mon Sep 17 00:00:00 2001 From: Kunwu Chan Date: Mon, 15 Jan 2024 14:34:34 +0800 Subject: [PATCH] vfio/pci: WARN_ON driver_override kasprintf failure kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. This is a blocking notifier callback, so errno isn't a proper return value. Use WARN_ON to small allocation failures. Signed-off-by: Kunwu Chan Link: https://lore.kernel.org/r/20240115063434.20278-1-chentao@kylinos.cn Signed-off-by: Alex Williamson --- drivers/vfio/pci/vfio_pci_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c index 1cbc990d42e0..61aa19666050 100644 --- a/drivers/vfio/pci/vfio_pci_core.c +++ b/drivers/vfio/pci/vfio_pci_core.c @@ -2047,6 +2047,7 @@ static int vfio_pci_bus_notifier(struct notifier_block *nb, pci_name(pdev)); pdev->driver_override = kasprintf(GFP_KERNEL, "%s", vdev->vdev.ops->name); + WARN_ON(!pdev->driver_override); } else if (action == BUS_NOTIFY_BOUND_DRIVER && pdev->is_virtfn && physfn == vdev->pdev) { struct pci_driver *drv = pci_dev_driver(pdev);