Created attachment 297517 [details] Contents of 'warning' stack trace, etc. As mentioned in summary - warning message in this routine at system reboot. Try as I might, I cannot include the text of the warning directly here in the description without losing carriage returns, so I include it as a text attachment.
I mark it as 'pci' simply because pci_device_shutdown is in the stack trace.
Please file i915 bugs at https://gitlab.freedesktop.org/drm/intel/issues/new