[Bug 215740] kernel warning: DMA-API: xhci_hcd: cacheline tracking EEXIST, overlapping mappings aren't supported

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https://bugzilla.kernel.org/show_bug.cgi?id=215740

Ferry Toth (ferry.toth@xxxxxxxxxxxx) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |andy.shevchenko@xxxxxxxxx

--- Comment #8 from Ferry Toth (ferry.toth@xxxxxxxxxxxx) ---
I also heard from Andy Shevchenko that he had the same error using even another
hub. It seems the error is not particular to a certain hub, but doesn't appear
on root hubs. 

And indeed when I plug my hub into Ubuntu the error doesn't occur because
"debug check added in 5.14 under a debug config option" (Comment 5 above) is
not enabled in Ubuntu kernels.

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