Re: [Xen-devel] [PATCH 4/4] xen/pcifront: Fix mysterious crashes when NUMA locality information was extracted.

[David Vrabel]

On 11/02/16 21:10, Konrad Rzeszutek Wilk wrote:
> --- a/drivers/pci/xen-pcifront.c
> +++ b/drivers/pci/xen-pcifront.c

> @@ -576,6 +578,7 @@ static void pcifront_free_roots(struct pcifront_device *pdev)
>  		free_root_bus_devs(bus_entry->bus);
>  
>  		kfree(bus_entry->bus->sysdata);
> +		bus_entry->bus->sysdata = NULL;

I dropped this change, as it was unrelated.

I note that we free sysdata before removing the bus which looks racy to me.

David