Hi Christian, I have re-tested with Ubuntu 21.04 (Hirsute Hippo).
It took me a while to set up test environment. Summary: Ubuntu Version: $ cat /etc/*-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=21.04 DISTRIB_CODENAME=hirsute DISTRIB_DESCRIPTION="Ubuntu 21.04" NAME="Ubuntu" VERSION="21.04 (Hirsute Hippo)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 21.04" VERSION_ID="21.04" HOME_URL="https://www.ubuntu.com/"; SUPPORT_URL="https://help.ubuntu.com/"; BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"; PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"; VERSION_CODENAME=hirsute UBUNTU_CODENAME=hirsute Linux Version: $ uname -a Linux green 5.11.0-17-generic #18-Ubuntu SMP Thu May 6 20:10:11 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux QEMU / Libvirt Version: $ sudo virsh version Compiled against library: libvirt 7.0.0 Using library: libvirt 7.0.0 Using API: QEMU 7.0.0 Running hypervisor: QEMU 5.2.0 Nesting Scenario: Layer 0 - Ubuntu 21.04 Layer 1 - FreeBSD 12.2 Bhyve Host Layer 2 - FreeBSD 12.2 Guest Result: Virtual Machine Freezes (without work around of turning off APIC interrupt delivery as per existing diagnosis: Workaround is to disable APIC virtual interrupt delivery: 1. Add entry into Layer 1 - FreeBSD Guest / Host: /boot/loader.conf: hw.vmm.vmx.use_apic_vid=0 Here is the libvirt log taken from Layer 0 - Ubuntu host: <<Layer 0 - Ubuntu 21.04 QEMU / KVM Host>> 2021-05-16 09:57:28.970+0000: starting up libvirt version: 7.0.0, package: 2ubuntu2 (Christian Ehrhardt <christian.ehrha...@canonical.com> Wed, 07 Apr 2021 13:33:46 +0200), qemu version: 5.2.0Debian 1:5.2+dfsg-9ubuntu3, kernel: 5.11.0-17-generic, hostname: green.in.graphica.com.au LC_ALL=C \ PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin \ HOME=/var/lib/libvirt/qemu/domain-10-hive-dev-freebsd-12. \ XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-10-hive-dev-freebsd-12./.local/share \ XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-10-hive-dev-freebsd-12./.cache \ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-10-hive-dev-freebsd-12./.config \ QEMU_AUDIO_DRV=spice \ /usr/bin/qemu-system-x86_64 \ -name guest=hive-dev-freebsd-12.2,debug-threads=on \ -S \ -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-10-hive-dev-freebsd-12./master-key.aes \ -blockdev '{"driver":"file","filename":"/usr/share/OVMF/OVMF_CODE_4M.fd","node-name":"libvirt-pflash0-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-pflash0-format","read-only":true,"driver":"raw","file":"libvirt-pflash0-storage"}' \ -blockdev '{"driver":"file","filename":"/home/jbh/Documents/virtual-machines/hive.dev.freebsd/OVMF_VARS.fd","node-name":"libvirt-pflash1-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-pflash1-format","read-only":false,"driver":"raw","file":"libvirt-pflash1-storage"}' \ -machine pc-q35-5.2,accel=kvm,usb=off,vmport=off,dump-guest-core=off,pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format,memory-backend=pc.ram \ -cpu Broadwell-IBRS,vme=on,ss=on,vmx=on,pdcm=on,f16c=on,rdrand=on,hypervisor=on,arat=on,tsc-adjust=on,umip=on,md-clear=on,stibp=on,arch-capabilities=on,ssbd=on,xsaveopt=on,pdpe1gb=on,abm=on,ibpb=on,ibrs=on,amd-stibp=on,amd-ssbd=on,skip-l1dfl-vmentry=on,pschange-mc-no=on \ -m 4096 \ -object memory-backend-ram,id=pc.ram,size=4294967296 \ -overcommit mem-lock=off \ -smp 4,sockets=4,cores=1,threads=1 \ -uuid 459ff0b9-e0d1-44d4-9862-83315419eeee \ -no-user-config \ -nodefaults \ -chardev socket,id=charmonitor,fd=32,server,nowait \ -mon chardev=charmonitor,id=monitor,mode=control \ -rtc base=utc,driftfix=slew \ -global kvm-pit.lost_tick_policy=delay \ -no-hpet \ -no-shutdown \ -global ICH9-LPC.disable_s3=1 \ -global ICH9-LPC.disable_s4=1 \ -boot strict=on \ -device pcie-root-port,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x2 \ -device pcie-root-port,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x2.0x1 \ -device pcie-root-port,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x2.0x2 \ -device pcie-root-port,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3 \ -device pcie-root-port,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x4 \ -device pcie-root-port,port=0x15,chassis=6,id=pci.6,bus=pcie.0,addr=0x2.0x5 \ -device pcie-pci-bridge,id=pci.7,bus=pci.1,addr=0x0 \ -device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x1d.0x7 \ -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,addr=0x1d \ -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pcie.0,addr=0x1d.0x1 \ -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pcie.0,addr=0x1d.0x2 \ -device virtio-serial-pci,id=virtio-serial0,bus=pci.2,addr=0x0 \ -device ide-cd,bus=ide.0,id=sata0-0-0,bootindex=1 \ -blockdev '{"driver":"file","filename":"/home/jbh/Documents/virtual-machines/hive.dev.freebsd/hive-hd1-01.qcow2","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"driver":"qcow2","file":"libvirt-1-storage","backing":null}' \ -device ide-hd,bus=ide.1,drive=libvirt-1-format,id=sata0-0-1,bootindex=2 \ -netdev tap,fd=35,id=hostnet0 \ -device vmxnet3,netdev=hostnet0,id=net0,mac=52:54:00:c8:8b:95,bus=pci.7,addr=0x1 \ -netdev tap,fd=36,id=hostnet1 \ -device vmxnet3,netdev=hostnet1,id=net1,mac=52:54:00:6c:c9:c1,bus=pci.7,addr=0x2 \ -chardev pty,id=charserial0 \ -device isa-serial,chardev=charserial0,id=serial0 \ -chardev spicevmc,id=charchannel0,name=vdagent \ -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 \ -device usb-kbd,id=input2,bus=usb.0,port=3 \ -spice port=5902,addr=127.0.0.1,disable-ticketing,image-compression=off,seamless-migration=on \ -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vram64_size_mb=0,vgamem_mb=16,max_outputs=1,bus=pcie.0,addr=0x1 \ -chardev spicevmc,id=charredir0,name=usbredir \ -device usb-redir,chardev=charredir0,id=redir0,bus=usb.0,port=1 \ -chardev spicevmc,id=charredir1,name=usbredir \ -device usb-redir,chardev=charredir1,id=redir1,bus=usb.0,port=2 \ -device virtio-balloon-pci,id=balloon0,bus=pci.4,addr=0x0 \ -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ -msg timestamp=on char device redirected to /dev/pts/2 (label charserial0) KVM internal error. Suberror: 1 emulation failure RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=0000000000000f00 RSI=0000000000000000 RDI=0000000000000000 RBP=0000000000000000 RSP=fffffe002d9f9700 R8 =0000000000000000 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff828fc5d9 RFL=00000046 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =003b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] CS =0020 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0028 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =003b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] FS =0013 0000000800b368d0 ffffffff 00c0f300 DPL=3 DS [-WA] GS =001b ffffffff82611000 ffffffff 00c0f300 DPL=3 DS [-WA] LDT=0000 0000000000000000 ffffffff 00c00000 TR =0048 ffffffff81f15e08 00002068 00008b00 DPL=0 TSS64-busy GDT= ffffffff81f1c608 00000067 IDT= ffffffff81f14da0 00000fff CR0=8005003b CR2=0000000000000000 CR3=0000000043b2b6ee CR4=003726e0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 Code=50 4c 8b 67 58 4c 8b 6f 60 4c 8b 77 68 4c 8b 7f 70 48 8b 3f <0f> 01 c2 48 89 e7 b8 02 00 00 00 eb 07 b8 03 00 00 00 eb 00 41 bb 02 00 00 00 74 06 41 bb 2021-05-16T11:49:21.487500Z qemu-system-x86_64: terminating on signal 15 from pid 1885 (/usr/sbin/libvirtd) 2021-05-16 11:49:21.889+0000: shutting down, reason=destroyed <<END>> So result is unchanged with update from: 20.04 -> 21.04 and FreeBSD 12.1 -> FreeBSD 12.2 NOTE: I also did testing of all 21.04 virtualization nesting: Layer 0 - Ubuntu 21.04 Layer 1 - Ubuntu 21.04 Layer 2 - Ubuntu 21.04 All Working OK !! Also Christian, I see your name in log: 2021-05-16 09:57:28.970+0000: starting up libvirt version: 7.0.0, package: 2ubuntu2 (Christian Ehrhardt <christian.ehrha...@canonical.com> Wed, 07 Apr 2021 13:33:46 +0200), qemu version: 5.2 Thanks for looking into this, please let me know if there is additional testing you would like to see. Cheers, John. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1876678 Title: Ubuntu 20.04 KVM / QEMU Failure with nested FreeBSD bhyve To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1876678/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
