On Tue, Jun 30, 2026 at 09:23:50AM +0800, Mingyu Wang wrote: > > > What is special about this virtual environment? Nobody else > > seems to have seen that in 20+ years. > > > > Or maybe the Fixes tag is not quite correct and something else more > > recent has caused it. > > Hi Andi, > > > You are right that normal users will not see this crash in the wild. > > The environment is a QEMU-based driver fuzzing framework. Rather than > functionally emulating specific hardware, the framework extracts device > matching information from the driver and synthesizes a mock PCI device just > to trigger the driver's binding and initialization paths. > > In this case, the synthesized PCI device matched the AGP bridge's IDs, > forcing `agp_amd64_probe()` to run. However, because this is a synthetic > fuzzing environment, there was no physical or emulated AMD Northbridge > present in the system.
Which means this is a contrivied environment that no one will actually use, so there is no need to backport this change anywhere. thanks, greg k-h
