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Bug 1728459

Summary: qemu gets ABRT when attach a existing qcow2 disk and then detach it
Product: Red Hat Enterprise Linux 7 Reporter: Han Han <hhan>
Component: qemu-kvm-rhevAssignee: Virtualization Maintenance <virt-maint>
Status: CLOSED DUPLICATE QA Contact: CongLi <coli>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 7.7CC: dyuan, fjin, jgao, jinzhao, juzhang, ngu, virt-maint, xuzhang, yafu, yisun
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1728461 (view as bug list) Environment:
Last Closed: 2019-07-11 01:47:17 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1728461    
Attachments:
Description Flags
all threads backtrace none

Description Han Han 2019-07-10 03:16:15 UTC 
Created attachment 1588984 [details]
all threads backtrace

Description of problem:
As subject

Version-Release number of selected component (if applicable):
libvirt-4.5.0-23.virtcov.el7.x86_64
qemu-kvm-rhev-2.12.0-33.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Start a vm.
2. Attach a qcow2 disk with target vdb
# virsh attach-disk PC /tmp/a.qcow2 vdb --subdriver qcow2
Disk attached successfully

3. Attach the same disk with another target
# virsh attach-disk PC /tmp/a.qcow2 vdc --subdriver qcow2
error: Failed to attach disk
error: internal error: unable to execute QEMU command '__com.redhat_drive_add': Device 'drive-virtio-disk2' could not be initialized

4. Detach the disk
# virsh detach-disk PC /tmp/a.qcow2                      
error: Failed to detach disk
error: Unable to read from monitor: Connection reset by peer

Qemu gets SIGABRT

Actual results:
As above

Expected results:
No SIGABRT

Additional info:
Reproduced on libvirt-5.5.0-1.module+el8.1.0+3580+d7f6488d.x86_64 qemu-kvm-4.0.0-5.module+el8.1.0+3622+5812d9bf.x86_64

No reproduced with raw disk:
# virsh attach-disk PC /tmp/a.raw vdb
# virsh attach-disk PC /tmp/a.raw vdc
# virsh detach-disk PC /tmp/a.raw

See the all threads backtrace in gdb.txt.
Comment 2 Han Han 2019-07-10 03:46:33 UTC 
Qemu cmdline:
/usr/libexec/qemu-kvm -name guest=PC,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-8-PC/master-key.aes -machine pc-i440fx-rhel7.6.0,accel=kvm,usb=off,dump-guest-core=off -cpu SandyBridge-IBRS -m 1024 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid 6f10e6c4-b3ce-4f55-a810-f5d4ca061468 -no-user-config -nodefaults -chardev socket,id=charmonitor,fd=27,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 PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot strict=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x4.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x4 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x4.0x1 -device ich9-usb-ehci1,id=usb1,bus=pci.0,addr=0x3.0x7 -device qemu-xhci,id=usb2,bus=pci.0,addr=0x9 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x8 -device ahci,id=sata0,bus=pci.0,addr=0xc -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive file=/var/lib/libvirt/images/PC.qcow2,format=qcow2,if=none,id=drive-virtio-disk0 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=29,id=hostnet0,vhost=on,vhostfd=30 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:2a:c4:bd,bus=pci.0,addr=0xa -netdev tap,fd=31,id=hostnet1,vhost=on,vhostfd=32 -device virtio-net-pci,netdev=hostnet1,id=net1,mac=52:54:00:66:34:3d,bus=pci.0,addr=0xb -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev socket,id=charchannel0,fd=33,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 -device usb-tablet,id=input0,bus=usb.0,port=1 -spice port=5900,addr=0.0.0.0,disable-ticketing,seamless-migration=on -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny -msg timestamp=on


Libvirt domain xml:
<domain type='kvm'>
  <name>PC</name>
  <uuid>6f10e6c4-b3ce-4f55-a810-f5d4ca061468</uuid>
  <memory unit='KiB'>1048576</memory>
  <currentMemory unit='KiB'>1048576</currentMemory>
  <vcpu placement='static'>2</vcpu>
  <os>
    <type arch='x86_64' machine='pc-i440fx-rhel7.6.0'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
  </features>
  <cpu mode='custom' match='exact' check='partial'>
    <model fallback='allow'>SandyBridge-IBRS</model>
  </cpu>
  <clock offset='utc'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <pm>
    <suspend-to-mem enabled='no'/>
    <suspend-to-disk enabled='no'/>
  </pm>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/var/lib/libvirt/images/PC.qcow2'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </disk>
    <controller type='usb' index='0' model='ich9-ehci1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x1'/>
    </controller>
    <controller type='usb' index='1' model='ich9-ehci1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x7'/>
    </controller>
    <controller type='usb' index='2' model='qemu-xhci'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <controller type='virtio-serial' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </controller>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <controller type='scsi' index='0' model='virtio-scsi'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </controller>
    <controller type='sata' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0c' function='0x0'/>
    </controller>
    <interface type='network'>
      <mac address='52:54:00:2a:c4:bd'/>
      <source network='default'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
    </interface>
    <interface type='network'>
      <mac address='52:54:00:66:34:3d'/>
      <source network='default'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' 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'>
      <target type='virtio' name='org.qemu.guest_agent.0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <input type='tablet' bus='usb'>
      <address type='usb' bus='0' port='1'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='spice' autoport='yes' listen='0.0.0.0'>
      <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='0x02' function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </memballoon>
  </devices>
</domain>
Comment 3 CongLi 2019-07-11 01:47:17 UTC 
Based on BZ1728461#c3, this bug is same as BZ1722090, 
close this one.

Thanks.

*** This bug has been marked as a duplicate of bug 1722090 ***