Created attachment 1293572 [details]
Journalctl -b -1 of the event

Description of problem:
With the released of the 4.11 series kernels into the Fedora updates system, I have no longer been able to remove the binding of my graphics card in order to have it participate in pci passthrough. The last working kernel for this was 4.10.17-200.fc25.x86_64.

This bug is highly consistent.

In order to do the unbinding, I use the following script, executed via SSH

#!/bin/bash
echo `date "+%H:%M:%S.%N"`"Leaving graphical mode"
time systemctl isolate multi-user.target
sleep 5
echo `date "+%H:%M:%S.%N"`"removing graphics binding"
time echo "0000:01:00.0" > /sys/bus/pci/drivers/amdgpu/unbind
sleep 5
echo `date "+%H:%M:%S.%N"`"Removing amdgpu module"
time modprobe -r amdgpu
sleep 5
echo `date "+%H:%M:%S.%N"`"Done"

Here is the latest attempt I've had using the 4.11.7-200.fc25.x86_64 kernel:

14:39:52.408096500Leaving graphical mode

real	0m0.253s
user	0m0.005s
sys	0m0.008s
14:39:57.666116884removing graphics binding
Segmentation fault

Remote interactions with the computer are still possible, however rebinding doesn't seem to work, and shutdown/reboots do not complete. The timestamps of the above and the attached output of journalctl do match.