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[PULL 3/4] hw/pci: Have safer pcie_bus_realize() by checking error path
From: |
Michael S. Tsirkin |
Subject: |
[PULL 3/4] hw/pci: Have safer pcie_bus_realize() by checking error path |
Date: |
Tue, 2 Mar 2021 09:21:15 -0500 |
From: Philippe Mathieu-Daudé <philmd@redhat.com>
While pci_bus_realize() currently does not use the Error* argument,
it would be an error to leave pcie_bus_realize() setting bus->flags
if pci_bus_realize() had failed.
Fix by using a local Error* and return early (propagating the error)
if pci_bus_realize() failed.
Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210201153700.618946-1-philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/pci/pci.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index fa97a671d1..0eadcdbc9e 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -132,8 +132,13 @@ static void pci_bus_realize(BusState *qbus, Error **errp)
static void pcie_bus_realize(BusState *qbus, Error **errp)
{
PCIBus *bus = PCI_BUS(qbus);
+ Error *local_err = NULL;
- pci_bus_realize(qbus, errp);
+ pci_bus_realize(qbus, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
/*
* A PCI-E bus can support extended config space if it's the root
--
MST
- [PULL 0/4] pc,virtio,pci: bug fixes, Michael S. Tsirkin, 2021/03/02
- [PULL 1/4] i386/acpi: restore device paths for pre-5.1 vms, Michael S. Tsirkin, 2021/03/02
- [PULL 3/4] hw/pci: Have safer pcie_bus_realize() by checking error path,
Michael S. Tsirkin <=
- [PULL 4/4] vhost: simplify vhost_dev_init() fail_busyloop label, Michael S. Tsirkin, 2021/03/02
- [PULL 2/4] virtio-net: handle zero mac for a vdpa peer, Michael S. Tsirkin, 2021/03/02
- Re: [PULL 0/4] pc,virtio,pci: bug fixes, Peter Maydell, 2021/03/03