Bug 1704584

Description of problem:

after system_reset_during_boot, guest failed to start.

found error in bios log:
Error: Image at 0007EA6F000 start failed: Unsupported



Version-Release number of selected component (if applicable):

host: 
kernel-4.18.0-80.19.el8.x86_64
qemu-kvm-2.12.0-67.module+el8.1.0+3088+c3b61d6f
edk2-ovmf-20190308git89910a39dcfd-2.el8.noarch

guest: 
kernel-4.18.0-80.21.el8.x86_64



How reproducible:
8/10


Steps to Reproduce:
1. boot guest with q35/ovmf
/usr/libexec/qemu-kvm \
    -S  \
    -name 'avocado-vt-vm1' \
    -machine q35  \
    -nodefaults \
    -device VGA,bus=pcie.0,addr=0x1  \
    -chardev socket,id=qmp_id_qmpmonitor1,path=/var/tmp/avocado_2gyxi5mu/monitor-qmpmonitor1-20190429-230122-lUVdivnr,server,nowait \
    -mon chardev=qmp_id_qmpmonitor1,mode=control  \
    -chardev socket,id=qmp_id_catch_monitor,path=/var/tmp/avocado_2gyxi5mu/monitor-catch_monitor-20190429-230122-lUVdivnr,server,nowait \
    -mon chardev=qmp_id_catch_monitor,mode=control \
    -device pvpanic,ioport=0x505,id=idjUXxuR  \
    -chardev socket,id=serial_id_serial0,path=/var/tmp/avocado_2gyxi5mu/serial-serial0-20190429-230122-lUVdivnr,server,nowait \
    -device isa-serial,chardev=serial_id_serial0  \
    -chardev socket,id=seabioslog_id_20190429-230122-lUVdivnr,path=/var/tmp/avocado_2gyxi5mu/seabios-20190429-230122-lUVdivnr,server,nowait \
    -device isa-debugcon,chardev=seabioslog_id_20190429-230122-lUVdivnr,iobase=0x402 \
    -device pcie-root-port,id=pcie.0-root-port-2,slot=2,chassis=2,addr=0x2,bus=pcie.0 \
    -device qemu-xhci,id=usb1,bus=pcie.0-root-port-2,addr=0x0 \
    -device pcie-root-port,id=pcie.0-root-port-3,slot=3,chassis=3,addr=0x3,bus=pcie.0 \
    -device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pcie.0-root-port-3,addr=0x0 \
    -drive id=drive_image1,if=none,snapshot=off,aio=threads,cache=none,format=qcow2,file=/home/kvm_autotest_root/images/rhel810-64-virtio-scsi.qcow2 \
    -device scsi-hd,id=image1,drive=drive_image1 \
    -device pcie-root-port,id=pcie.0-root-port-4,slot=4,chassis=4,addr=0x4,bus=pcie.0 \
    -device virtio-net-pci,mac=9a:a9:aa:ab:ac:ad,id=idPoD7qS,vectors=4,netdev=idX4UPO0,bus=pcie.0-root-port-4,addr=0x0  \
    -netdev tap,id=idX4UPO0,vhost=on,vhostfd=24,fd=21 \
    -m 10240  \
    -smp 12,maxcpus=12,cores=6,threads=1,sockets=2  \
    -cpu 'SandyBridge',+kvm_pv_unhalt \
    -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1  \
    -vnc :0  \
    -rtc base=utc,clock=host,driftfix=slew  \
    -boot order=cdn,once=c,menu=off,strict=off \
    -drive if=pflash,format=raw,readonly=on,file=/usr/share/OVMF/OVMF_CODE.secboot.fd \
    -drive if=pflash,format=raw,file=/home/kvm_autotest_root/images/rhel810-64-virtio-scsi.qcow2.fd \
    -enable-kvm \
    -device pcie-root-port,id=pcie_extra_root_port_0,slot=5,chassis=5,addr=0x5,bus=pcie.0

2. Reset guest system for 20 times during boot randomly.
qmp cmd: {'execute': 'system_reset', 'id': '2W0fmTmo'}

(1) Reset the system by monitor cmd after 39.628secs
(2) Reset the system by monitor cmd after 36.356secs
(3) Reset the system by monitor cmd after 41.094secs
(4) Reset the system by monitor cmd after 9.626secs
(5) Reset the system by monitor cmd after 11.8secs
(6) Reset the system by monitor cmd after 50.529secs
(7) Reset the system by monitor cmd after 38.049secs
(8) Reset the system by monitor cmd after 31.379secs
(9) Reset the system by monitor cmd after 16.472secs
(10) Reset the system by monitor cmd after 23.282secs
(11) Reset the system by monitor cmd after 34.164secs
(12) Reset the system by monitor cmd after 45.996secs
(13) Reset the system by monitor cmd after 3.062secs
(14) Reset the system by monitor cmd after 9.631secs
(15) Reset the system by monitor cmd after 23.259secs
(16) Reset the system by monitor cmd after 32.473secs
(17) Reset the system by monitor cmd after 16.638secs
(18) Reset the system by monitor cmd after 38.076secs
(19) Reset the system by monitor cmd after 21.106secs
(20) Reset the system by monitor cmd after 33.661secs

3. Try to login guest after reset


Actual results:
guest can not boot up after reset. please refer to attached log file for details.


Expected results:
guest works well, boot up normally.


Additional info:

Not hit this issue via seabios.


Hit this issue by automation case "system_reset_during_boot" in avocado.

cmd lines:
# python3 ConfigTest.py --testcase=system_reset_during_boot --imageformat=qcow2 --guestname=RHEL.8.1.0 --driveformat=virtio_scsi --nicmodel=virtio_net --machines=q35 --clone=no --firmware=ovmf