https://bugzilla.kernel.org/show_bug.cgi?id=197951 Bug ID: 197951 Summary: QEMU/KVM & VFIO & PCI passthru with Windows 10 x64 guest: memory access intermittently causes CRITICAL_STRUCTURE_CORRUPTION BSOD unless swap is disabled on host, since 4.12.13 Product: Virtualization Version: unspecified Kernel Version: 4.12.13 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: JimiJames.Bove@xxxxxxxxx Regression: No Originally reported here: https://bugs.launchpad.net/qemu/+bug/1728256 The title explains it all. When running a Windows 10 x64 guest that passes through a PCIe device with VFIO (especially a GPU, or perhaps only if at least one passed device is a GPU, since nobody who isn't passing through a GPU has confirmed this) on kernel version 4.12.13 and up, the guest will crash with the CRITICAL_STRUCTURE_CORRUPTION blue screen of death randomly when accessing the host's memory. You have to be doing something memory intensive, like mining or gaming, for it to happen often enough to really notice, but if you do, it happens once an hour or every few hours. I downgraded to 4.12.12 and the issue went away. Others disabled swap instead of downgrading, and the issue went away. Disabling swap isn't an option for me, so I can't upgrade the kernel until this is fixed. -- You are receiving this mail because: You are watching the assignee of the bug.
