Re: testusb: epipe errors on test 9 and 10

[Greg KH <gregkh@linuxfoundation.org>]

On Thu, Nov 27, 2025 at 01:53:32PM +0100, Angelo Dureghello wrote:
> Hi Greg,
> 
> thanks a lot,
> 
> On 11/27/25 09:22, Greg KH wrote:
> > On Thu, Nov 27, 2025 at 09:06:24AM +0100, Angelo Dureghello wrote:
> > > Hi all,
> > > 
> > > looking for some help on testusb tool tests 9,10 always failing with
> > > -EPIPE, kind of ep stall. Peripheral side has g_zero loaded.
> > > 
> > > Devices under test are custom boards, have same qualcomm 8 cores cpu, and
> > > kernel is android 5.4. Involved drivers in both devices are xhci and dwc3.
> > > Anyway, connection under tests is 2.0 microusb connector on both side.
> > 5.4 is _very_ old and obsolete and odds are you are paying for support
> > for that kernel from a company if you are stuck with it (hint, it is
> > going to go end-of-life in 3 days).  Please contact them as you are
> > paying for this kind of thing from your vendor.
> > 
> > If you can reproduce this with the latest release (6.17), please let us
> > know.
> it's an android kernel msm-5.4, actually updated from google with critical
> fixes, at least i can see some xhci endpoint stall issues applied to it,
> even
> if of course all the usb core stuff is that old (5.4).

Again, that kernel tree will go out of support in 3 days from us, so not
much we can do here, you should seriously consider upgrading as you are
going to have a very insecure system soon (not to mention that the
latest 5.4.y release, 5.4.301, currently has 1541 unfixed CVEs in it...)

thanks,

greg k-h