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PCI/IOV: Fix memory leak in pci_iov_add_virtfn() 

commit 8c386cc817 upstream.

In the implementation of pci_iov_add_virtfn() the allocated virtfn is
leaked if pci_setup_device() fails. The error handling is not calling
pci_stop_and_remove_bus_device(). Change the goto label to failed2.

Fixes: 156c55325d ("PCI: Check for pci_setup_device() failure in pci_iov_add_virtfn()")
Link: https://lore.kernel.org/r/20191125195255.23740-1-navid.emamdoost@gmail.com
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Navid Emamdoost 2019-11-25 13:52:52 -06:00 committed by Greg Kroah-Hartman
parent da268240fb
commit 4f0e6425a2
1 changed files with 4 additions and 5 deletions
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9
drivers/pci/iov.c
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@ -187,10 +187,10 @@ int pci_iov_add_virtfn(struct pci_dev *dev, int id)
sprintf(buf, "virtfn%u", id);
rc = sysfs_create_link(&dev->dev.kobj, &virtfn->dev.kobj, buf);
if (rc)
goto failed2;
goto failed1;
rc = sysfs_create_link(&virtfn->dev.kobj, &dev->dev.kobj, "physfn");
if (rc)
goto failed3;
goto failed2;
kobject_uevent(&virtfn->dev.kobj, KOBJ_CHANGE);
@ -198,11 +198,10 @@ int pci_iov_add_virtfn(struct pci_dev *dev, int id)
return 0;
failed3:
sysfs_remove_link(&dev->dev.kobj, buf);
failed2:
pci_stop_and_remove_bus_device(virtfn);
sysfs_remove_link(&dev->dev.kobj, buf);
failed1:
pci_stop_and_remove_bus_device(virtfn);
pci_dev_put(dev);
failed0:
virtfn_remove_bus(dev->bus, bus);