In at least Linux 5.2.7 via Fedora, up to 5.2.18, guest OS applications
repeatedly crash with segfaults. The problem does not occur on 5.1.16.
System is running Fedora 29 with kernel 5.2.18. Guest OS is Windows 10 with an
AMD Radeon 540 GPU passthrough. When on 5.2.7 or 5.2.18, specific windows
applications frequently and repeatedly crash, throwing exceptions in random
libraries. Going back to 5.1.16, the issue does not occur.
The host system is unaffected by the regression.
Keywords: kvm mmu pci passthrough vfio vfio-pci amdgpu
Possibly related: Unmerged [PATCH] KVM: x86/MMU: Zap all when removing memslot
if VM has assigned device
Workaround: Use 5.1.16 kernel.
|
|
--
Derek Yerger
