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Bug#1114912: linux-image-amd64: KVM GPU passthrough causes kernel crash and system hang on Debian 13 after VM shutdown



Hello,

On Wed, Sep 24, 2025 at 04:33:33PM +0000, dec first wrote:
> Please let me know if any additional information or further testing is required.

I think what happens when you start kvm (or whatever virtual machine
manager you're using) is that the amdgpu driver is unbound and after
Windows shut down the driver is bound again to the hardware.

I guess unbinding fails to release all resources. Can you try without
the virtual windows to just do:

	echo 0000:03:00.0 > /sys/bus/pci/drivers/amdgpu/unbind
	echo 0000:03:00.0 > /sys/bus/pci/drivers/amdgpu/bind

Does this result in error messages, or a working driver?

Best regards
Uwe

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