Hello, I'm running a lot of identical VMs under KVM. Sometimes (one time per 2000-3000 runs) I got following: 1. VM is paused in libvirt. It can't be just resumed. I can just reset it and resume. 2. In VM log file I see following: "KVM: unknown exit, hardware reason 31" with a CPU dump. 3. In dmesg I see following: [84245.284948] EPT: Misconfiguration. [84245.285056] EPT: GPA: 0xfeda848 [84245.285154] ept_misconfig_inspect_spte: spte 0x5eaef50107 level 4 [84245.285344] ept_misconfig_inspect_spte: spte 0x5f5fadc107 level 3 [84245.285532] ept_misconfig_inspect_spte: spte 0x5141d18107 level 2 [84245.285723] ept_misconfig_inspect_spte: spte 0x52e40dad77 level 1 OS. 3.16.0-44-generic #59~14.04.1-Ubuntu SMP QEMU: QEMU emulator version 2.0.0 (Debian 2.0.0+dfsg-2ubuntu1.14), Copyright (c) 2003-2008 Fabrice Bellard Is it linux kvm bug or CPU bug? How can I fix that? I can reproduce the bug in one-two days. Is it possible to enable deeper debug for the issue? Thanks -- With best regards, Pavel S. Shirshov -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html