On Wed, Jul 21, 2021 at 07:51:58AM +0000, Schmid, Carsten wrote: > Hi Greg, > > >> Hi Mathias, > >> > >> i got a NULL pointer deref in the usbfs and analyzed it. > >> The connected device seemed to have trouble on USB transmissions. > >> However, I have the impression that there is a race between finishing URB handling and disconnection of devices. > >> In detail: > >> [ 4979.029666] xhci_hcd 0000:00:15.0: USB transfer error. Maybe the USB cable is bad? > > > > Did your cable die? > > > > And 4.14 is quite old, what about 5.13? > > > > thanks, > > > > greg k-h > > That was reported from a device in the field. > Yes, a defective cable is bad, but shouldn't the kernel's health avoid a NULL pointer deref? Yes, I am not disagreeing about that, patches always welcome :) thanks, greg k-h
