On Tue, May 03, 2022 at 04:26:58PM +0200, Ferry Toth wrote: > On 03-05-2022 10:26, Lukas Wunner wrote: > > On Mon, May 02, 2022 at 10:33:06PM +0200, Ferry Toth wrote: > > > I have "DMA-API: debugging enabled by kernel config" > > > and this (I guess) shows me before and after the patches: > > > > > > ------------[ cut here ]------------ > > > DMA-API: xhci-hcd xhci-hcd.1.auto: cacheline tracking EEXIST, overlapping > > > mappings aren't supported > > > > That is under investigation here: > > https://bugzilla.kernel.org/show_bug.cgi?id=215740 > > > > It's apparently a long-standing bug in the USB core which was exposed > > by a new WARN() check introduced in 5.14. > > I'm not sure this is correct. The issue happens for me only when connecting > the SMSC9414. > > Other usb devices I have (memory sticks, wifi, bluetooth) do not trigger > this. Hm, I've taken the liberty to add that information to the bugzilla. Thanks, Lukas
