On Thu, Mar 25, 2021 at 8:27 AM Zhiqiang Liu <liuzhiqiang26@xxxxxxxxxx> wrote: > > From: Feilong Lin <linfeilong@xxxxxxxxxx> > > In enable_slot() in drivers/pci/hotplug/acpiphp_glue.c, if pci_get_slot() > will return NULL, we will do not set SLOT_ENABLED flag of slot. if one > device is found by calling pci_get_slot(), its reference count will be > increased. In this case, we did not call pci_dev_put() to decrement the > its reference count, the memory of the device (struct pci_dev type) will > leak. > > Fix it by calling pci_dev_put() to decrement its reference count after that > pci_get_slot() returns a PCI device. > > Signed-off-by: Feilong Lin <linfeilong@xxxxxxxxxx> > Signed-off-by: Zhiqiang Liu <liuzhiqiang26@xxxxxxxxxx> > -- > v2: rewrite subject and commit log as suggested by Bjorn Helgaas. The fix is correct AFAICS, so Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Bjorn, has this been applied already? If not, do you want me to take it or are you going to queue it up yourself? > --- > drivers/pci/hotplug/acpiphp_glue.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c > index 3365c93abf0e..f031302ad401 100644 > --- a/drivers/pci/hotplug/acpiphp_glue.c > +++ b/drivers/pci/hotplug/acpiphp_glue.c > @@ -533,6 +533,7 @@ static void enable_slot(struct acpiphp_slot *slot, bool bridge) > slot->flags &= ~SLOT_ENABLED; > continue; > } > + pci_dev_put(dev); > } > } > > -- > 2.19.1 >
