https://bugzilla.kernel.org/show_bug.cgi?id=116101 Bug ID: 116101 Summary: "Userspace still has active objects" and "trying to unbind memory from uninitialized GART !" when unbinding from radeon Product: Drivers Version: 2.5 Kernel Version: 4.5.0 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx Reporter: MonopolyMan720@xxxxxxx Regression: No Created attachment 212291 --> https://bugzilla.kernel.org/attachment.cgi?id=212291&action=edit Journalctl output I am attempting to unbind my R9 290 from radeon and rebind it to vfio. However, the entire system hangs when "echo "0000:01:00.0" > /sys/bus/pci/devices/0000:01:00.0/driver/unbind" is ran as root. Steps to Reproduce: Run the following script as root #!/bin/bash set -x echo "1002 67b1" > /sys/bus/pci/drivers/vfio-pci/new_id echo "0000:01:00.0" > /sys/bus/pci/devices/0000:01:00.0/driver/unbind echo "0000:01:00.0" > /sys/bus/pci/drivers/vfio-pci/bind echo "1002 67b1" > /sys/bus/pci/drivers/vfio-pci/remove_id echo "1002 aac8" > /sys/bus/pci/drivers/vfio-pci/new_id echo "0000:01:00.1" > /sys/bus/pci/devices/0000:01:00.1/driver/unbind echo "0000:01:00.1" > /sys/bus/pci/drivers/vfio-pci/bind echo "1002 aac8" > /sys/bus/pci/drivers/vfio-pci/remove_id set +x Actual Results: System hangs on "echo "0000:01:00.0" > /sys/bus/pci/devices/0000:01:00.0/driver/unbind" Journalctl shows "Apr 09 16:10:26 joey-arch-pc kernel: radeon 0000:01:00.0: Userspace still has active objects !" followed by numerous "Apr 09 16:10:26 joey-arch-pc kernel: trying to unbind memory from uninitialized GART !" Expected Results: The GPU should be unbinding from radeon and rebinding to vfio-pci without hanging. Additional information: I experienced the same issue on 4.1.20-1. I know of instances where the same script results in the expected outcome with a Cayman PRO graphics card. Attached is the output of journalctl for the entire boot. Go to 16:10:26 to see relevant call traces. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
