Re: usb/uwb: GPF in uwbd_start
- Date: Wed, 13 Sep 2017 17:12:24 +0200
- From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
- Subject: Re: usb/uwb: GPF in uwbd_start
On Tue, Sep 12, 2017 at 9:55 PM, Greg Kroah-Hartman
> On Tue, Sep 12, 2017 at 07:10:07PM +0200, Andrey Konovalov wrote:
>> I've got the following crashes while fuzzing the kernel with syzkaller.
>> On commit 81a84ad3cb5711cec79f4dd53a4ce026b092c432 (Sep 3).
>> uwbd_start() calls kthread_run() and checks that the return value in
>> not NULL. But the return value is not NULL in case kthread_run()
>> fails, it takes the form of ERR_PTR(-EINTR).
> Great, do you want to write a patch for this, or do you want me to?
Just mailed a patch.
> And I'm guessing you really don't have the real hardware for this
> device, right?
I don't have a hardware reproducer, but making it is just a question
of effort. There's the Facedancer21 board , which can be used to
emulate arbitrary USB devices. It's also possible to do this with with
something like Raspberry Pi Zero in USB gadget mode through gadgetfs.
> greg k-h