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 <chentao@kylinos.cn> Link: https://lore.kernel.org/r/20240115063434.20278-1-chentao@kylinos.cn Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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@ -2047,6 +2047,7 @@ static int vfio_pci_bus_notifier(struct notifier_block *nb,
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pci_name(pdev));
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pdev->driver_override = kasprintf(GFP_KERNEL, "%s",
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vdev->vdev.ops->name);
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WARN_ON(!pdev->driver_override);
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} else if (action == BUS_NOTIFY_BOUND_DRIVER &&
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pdev->is_virtfn && physfn == vdev->pdev) {
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struct pci_driver *drv = pci_dev_driver(pdev);
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