Hello Gerd,

+-- On Fri, 7 Oct 2016, Gerd Hoffmann wrote --+
| I think it is better to apply the limit to link trbs only (which allow
| to jump to another address so the guest can build loops with it).  Also
| I think the limit can be much stricter then without breaking stuff as
| typically a link trb is used at the end of a page full of normal trbs,
| to jump to the next page with trbs. 

  Okay.

| both xhci_ring_fetch and xhci_ring_chain_length, so we should fix both. 
| Is there a reproducer?  If so, can you try the attached patch with it?

  Yes, the attached patch does fix this issue. 

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F

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