https://lists.gnu.org/archive/html/qemu-block/2019-09/msg00481.html fix issue and migration work fine
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1842038 Title: qemu 4.0/4.1 segfault on live migrate with virtio-scsi iothread Status in QEMU: New Bug description: [root@kvm-nvme5 qemu]# uname -a Linux kvm-nvme5 4.14.35-1902.4.8.el7uek.x86_64 #2 SMP Sun Aug 4 22:25:18 GMT 2019 x86_64 x86_64 x86_64 GNU/Linux [root@kvm-nvme5 qemu]# qemu-system-x86_64 --version QEMU emulator version 4.1.0 (qemu-4.1.0-1.el7) Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers [root@kvm-nvme5 qemu]# libvirtd --version libvirtd (libvirt) 5.6.0 when migrate MIGR_OPTS="--live --copy-storage-all --verbose --persistent --undefinesource" virsh migrate $MIGR_OPTS p12345 qemu+ssh://$SERV/system we got segfault if we have option <driver iothread='1'/> in config for virtio-scsi controller [1205674.818067] qemu-system-x86[39744]: segfault at 38 ip 00005575890ad411 sp 00007ffd3c10a0e0 error 6 in qemu-system- x86_64[5575889ad000+951000] On 4.0 we have error with this context(dont save all output) "qemu_coroutine_get_aio_context(co)' failed" If we remove option <driver iothread='1'/> migrate work fine without segfaults 2019-08-30 08:25:35.402+0000: starting up libvirt version: 5.6.0, package: 1.el7 (Unknown, 2019-08-06-09:57:56, mock), qemu version: 4.1.0qemu-4.1.0-1.el7, kernel: 4.14.35-1902.4.8.el7uek.x86_64, hostname: kvm-nvme5 LC_ALL=C \ PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin \ HOME=/var/lib/libvirt/qemu/domain-75-p541999 \ XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.local/share \ XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.cache \ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-75-p541999/.config \ QEMU_AUDIO_DRV=none \ /usr/bin/qemu-system-x86_64 \ -name guest=p541999,debug-threads=on \ -S \ -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-75-p541999/master-key.aes \ -machine pc-q35-4.0,accel=kvm,usb=off,dump-guest-core=off \ -cpu Cascadelake-Server,ss=on,hypervisor=on,tsc-adjust=on,umip=on,pku=on,md-clear=on,stibp=on,arch-capabilities=on,xsaves=on,rdctl-no=on,ibrs-all=on,skip-l1dfl-vmentry=on,mds-no=on,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1000,hv-vpindex,hv-runtime,hv-synic,hv-stimer,hv-fre quencies,hv-reenlightenment,hv-tlbflush \ -m 2148 \ -overcommit mem-lock=off \ -smp 1,sockets=1,cores=1,threads=1 \ -object iothread,id=iothread1 \ -uuid ff20ae7f-8cfe-4ec5-bd50-e78f8a167414 \ -no-user-config \ -nodefaults \ -chardev socket,id=charmonitor,fd=44,server,nowait \ -mon chardev=charmonitor,id=monitor,mode=control \ -rtc base=utc,driftfix=slew \ -global kvm-pit.lost_tick_policy=delay \ -no-shutdown \ -boot menu=on,strict=on \ -device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x5.0x7 \ -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,addr=0x5 \ -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pcie.0,addr=0x5.0x1 \ -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pcie.0,addr=0x5.0x2 \ -device virtio-scsi-pci,iothread=iothread1,id=scsi0,bus=pcie.0,addr=0x9 \ -device virtio-serial-pci,id=virtio-serial0,bus=pcie.0,addr=0x6 \ -drive file=/dev/vm/p541999,format=raw,if=none,id=drive-scsi0-0-0-0,cache=none,discard=unmap,aio=threads,throttling.bps-write=52428800,throttling.bps-write-max=314572800,throttling.bps-write-max-length=120 \ -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,device_id=drive-scsi0-0-0-0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=2,write-cache=on \ -drive if=none,id=drive-sata0-0-0,readonly=on \ -device ide-cd,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0,bootindex=1 \ -netdev tap,fd=47,id=hostnet0,vhost=on,vhostfd=48 \ -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:00:00:54:19:99,bus=pcie.0,addr=0x3 \ -chardev pty,id=charserial0 \ -device isa-serial,chardev=charserial0,id=serial0 \ -chardev socket,id=charchannel0,fd=49,server,nowait \ -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 \ -vnc 0.0.0.0:6128,password \ -device cirrus-vga,id=video0,bus=pcie.0,addr=0x1 \ -device virtio-balloon-pci,id=balloon0,bus=pcie.0,addr=0x8 \ -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ -msg timestamp=on char device redirected to /dev/pts/5 (label charserial0) 2019-08-30 08:27:00.539+0000: shutting down, reason=crashed config: <domain type='kvm'> <name>p541999</name> <uuid>ff20ae7f-8cfe-4ec5-bd50-e78f8a167414</uuid> <memory unit='KiB'>2199552</memory> <currentMemory unit='KiB'>2199552</currentMemory> <vcpu placement='static'>1</vcpu> <iothreads>1</iothreads> <resource> <partition>/machine</partition> </resource> <os> <type arch='x86_64' machine='pc-q35-4.0'>hvm</type> <boot dev='cdrom'/> <boot dev='hd'/> <bootmenu enable='yes'/> </os> <features> <acpi/> <apic/> <pae/> <hyperv> <relaxed state='on'/> <vapic state='on'/> <spinlocks state='on' retries='4096'/> <vpindex state='on'/> <runtime state='on'/> <synic state='on'/> <stimer state='on'/> <frequencies state='on'/> <reenlightenment state='on'/> <tlbflush state='on'/> </hyperv> <msrs unknown='ignore'/> </features> <cpu mode='host-model' check='full'> <model fallback='forbid'/> </cpu> <clock offset='utc'> <timer name='rtc' tickpolicy='catchup'/> <timer name='pit' tickpolicy='delay'/> <timer name='hpet' present='yes'/> <timer name='hypervclock' present='yes'/> </clock> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/qemu-system-x86_64</emulator> <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='none' io='threads' discard='unmap'/> <source dev='/dev/vm/p541999'/> <backingStore/> <target dev='sda' bus='scsi'/> <iotune> <write_bytes_sec>52428800</write_bytes_sec> <write_bytes_sec_max>314572800</write_bytes_sec_max> <write_bytes_sec_max_length>120</write_bytes_sec_max_length> </iotune> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='sdb' bus='sata'/> <readonly/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <controller type='usb' index='0' model='ich9-ehci1'> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x7'/> </controller> <controller type='usb' index='0' model='ich9-uhci1'> <master startport='0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0' multifunction='on'/> </controller> <controller type='usb' index='0' model='ich9-uhci2'> <master startport='2'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x1'/> </controller> <controller type='usb' index='0' model='ich9-uhci3'> <master startport='4'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x2'/> </controller> <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </controller> <controller type='scsi' index='0' model='virtio-scsi'> <driver iothread='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/> </controller> <controller type='pci' index='0' model='pcie-root'/> <controller type='sata' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/> </controller> <interface type='bridge'> <mac address='00:00:00:54:19:99'/> <source bridge='br0'/> <bandwidth> <inbound average='12500' peak='12500' burst='1024'/> <outbound average='12500' peak='12500' burst='1024'/> </bandwidth> <model type='virtio'/> <filterref filter='clean-traffic'> <parameter name='CTRL_IP_LEARNING' value='none'/> <parameter name='IP' value='1.2.3.4'/> </filterref> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <target type='isa-serial' port='0'> <model name='isa-serial'/> </target> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <channel type='unix'> <source mode='bind' path='/var/lib/libvirt/qemu/p541999.agent'/> <target type='virtio' name='org.qemu.guest_agent.0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <graphics type='vnc' port='12028' autoport='no' listen='0.0.0.0' passwd='SUPERPASSWORD'> <listen type='address' address='0.0.0.0'/> </graphics> <video> <model type='cirrus' vram='16384' heads='1' primary='yes'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </memballoon> </devices> <seclabel type='none' model='none'/> </domain> To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1842038/+subscriptions
