On Fri, 2012-09-28 at 11:50 -0700, Greg Kroah-Hartman wrote: > From: Greg KH <[email protected]> > > 3.5-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Sebastian Andrzej Siewior <[email protected]> > > commit 1b68a4ca2d038addb7314211d122fb6d7002b38b upstream. > > If USB2 host controller probes fine but USB3 does not then we don't > remove the USB controller properly and lock up the system while the HUB > code will try to enumerate the USB2 controller and access memory which > is no longer available in case the dummy_hcd was compiled as a module. > > This is a problem since 448b6eb1 ("USB: Make sure to fetch the BOS desc > for roothubs.) if used in USB3 mode because dummy does not provide this > descriptor and explodes later. [...]
i.e. for 3.5 (as noted in the cc: stable line). But I don't see why
this isn't needed for earlier kernel versions. The same broken error
handling is present.
Ben.
--
Ben Hutchings
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