https://bugzilla.kernel.org/show_bug.cgi?id=196685 Bug ID: 196685 Summary: System becomes unresponsive after intel_iommu kernel error Product: Virtualization Version: unspecified Kernel Version: 4.12.7 Hardware: Intel OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: jaszhix@xxxxxxxxx Regression: No Created attachment 257969 --> https://bugzilla.kernel.org/attachment.cgi?id=257969&action=edit Kernel error in /var/log/kern.log I using a qemu virtual machine with VGA pass through. I have two Intel NICs in use by my motherboard, and I am passing through one of them so I can network with the VM over gigabit ethernet. I have been using this without issues for several months, but recently my system started becoming unstable. Before each crash, the network connection would abruptly end, and I suspect that is related to this. My desktop environment locks up, and after logging into my user account in another terminal, it is flooded with UFW block messages and no commands using sudo return anything. A kernel error appearing to be caused by intel_iommu is left in the kernel log. After this has happened yesterday, I ran memtest86 and my memory is okay. I am using an engineering sample CPU that is a down-clocked Intel E5 2680 v4. I haven't had any issues with this chip except recently when using VT-d. -- You are receiving this mail because: You are watching the assignee of the bug.
