Bug 101261
| Summary: | Radeon - Kernel warning when driver is unbound from secondary GPU | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Beau V.C. Bellamy (bellamy.beau) |
| Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
| Status: | NEW --- | ||
| Severity: | normal | CC: | szg00000 |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 4.0.7 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
dmesg output
Script to unbind and start VM |
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Created attachment 182291 [details]
Script to unbind and start VM
When unbinding the radeon driver from a second GPU in order to bind to the vfio-pci driver (so it can be used on a virtual machine), the linux kernel will display several warnings. It looks like some resources may be double-freed. The GPU will otherwise work flawlessly in the VM with full acceleration on the stock AMD windows drivers. This actually shows up on all kernels that I've tried: 4.1.0, 3.19, 3.18, etc. I'm not sure it's related, but the first GPU when running X on the host will have some difficulties getting OpenGL working (I have a routine that involves a dance with glxgears and firefox) and will work for some time and then take the entire system down hard. If I avoid anything OpenGL/DRM, the system will run indefinitely. |
Created attachment 182281 [details] dmesg output