Messages in this thread | | | Date | Tue, 8 Jun 2010 15:05:22 -0700 | From | Greg KH <> | Subject | Re: cpqphp: NULL ptr deref in cpqhpc_probe |
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On Tue, Jun 08, 2010 at 02:37:39PM -0700, Jesse Barnes wrote: > On Thu, 03 Jun 2010 11:24:22 +0200 > Jiri Slaby <jslaby@suse.cz> wrote: > > > Hi, > > > > we have a system where there is a pci hotplug class device to be handled > > by cpqphp, but it is not a bridge. But in cpqhpc_probe there is: > > struct pci_bus *bus; > > ... > > bus = pdev->subordinate; > > ... > > bus->max_bus_speed = PCI_SPEED_66MHz_PCIX; > > > > But as it is not a bridge, subordinate is NULL and the kernel crashes. > > > > Any idea what would be a correct fix here? > > > > The bugzilla entry is at: > > https://bugzilla.novell.com/show_bug.cgi?id=609338 > > I don't think we have anyone actively working on CPQHPC these days. > Seems like the simple patch would be to check whether pdev->subordinate > or bus exists before using it... Have you poked around for specs on > this at all?
I don't think I even have the specs anymore. I ported the code from 2.4 back in 2001 or so and got it merged. I didn't think this device was still even around in systems.
a simple check would be best.
thanks,
greg k-h
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