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    SubjectRe: [linux-usb-devel] Container_of considered harmful - was Re: usb storage sddr09
    Actually, I've seen this one with 2.5.44 and no USB storage devices
    attached. Just load usb-storage and it OOPSes.

    I haven't been able to find it yet, but I haven't looked as hard as I


    On Sun, Oct 20, 2002 at 08:24:36PM +0200, Andries Brouwer wrote:
    > > Both of these are fixed with 2.4.44
    > Yes, there is progress. Not to say that there are no oopses left,
    > but with 2.5.44 the oopses are different.
    > Let me just report one, don't know whether I'll have time to track
    > what happens.
    > Insert and remove a usb-storage device while usb-storage
    > is not loaded. Now load usb-storage. Oops.
    > The oops is a dereference of fffffff0 in base/bus.c:driver_attach().
    > I have seen several such oopses lately, various places in the kernel.
    > The cause here is a NULL pointer that is turned into fffffff0 by
    > container_of() and then fed to get_device(). And get_device() tests
    > that it gets a non-NULL pointer, but that does not protect against
    > fffffff0.
    > Andries
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    Matthew Dharm Home:
    Maintainer, Linux USB Mass Storage Driver

    What, are you one of those Microsoft-bashing Linux freaks?
    -- Customer to Greg
    User Friendly, 2/10/1999
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