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Bug
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Resolution: Done-Errata
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Major
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rhel-9.4
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qemu-kvm-8.2.0-1.el9
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Yes
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Important
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Regression, CustomerScenariosInitiative
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rhel-sst-virtualization-storage
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ssg_virtualization
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23
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25
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3
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QE ack
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False
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None
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Red Hat Enterprise Linux
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None
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Pass
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Automated
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x86_64
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Linux
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None
What were you trying to do that didn't work?
There is no response after execute QMP blockdev-change-medium
Please provide the package NVR for which bug is seen:
Red Hat Enterprise Linux release 9.4 Beta (Plow)
5.14.0-392.el9.x86_64
qemu-kvm-8.1.0-5.el9.x86_64
seabios-bin-1.16.1-1.el9.noarch
edk2-ovmf-20230524-4.el9_3.noarch
libvirt-9.5.0-7.el9_3.x86_64
virtio-win-prewhql-0.1-240.iso
How reproducible:
< 10% manually
>30 automation
Steps to reproduce
1. create iso
dd if=/dev/urandom of=/tmp/orig.dat bs=1M count=100
mkisofs -o /home/kvm_autotest_root/images/orig.iso /tmp/orig.dat
2.boot vm
// code placeholder /usr/libexec/qemu-kvm \ -name 'avocado-vt-vm1' \ -sandbox on \ -machine pc \ -nodefaults \ -device '{"driver": "VGA", "bus": "pci.0", "addr": "0x2"}' \ -m 8G \ -smp 10,maxcpus=10,cores=5,threads=1,dies=1,sockets=2 \ -cpu 'Cascadelake-Server-noTSX',+kvm_pv_unhalt \ -device '{"driver": "ich9-usb-ehci1", "id": "usb1", "addr": "0x1d.0x7", "multifunction": true, "bus": "pci.0"}' \ -device '{"driver": "ich9-usb-uhci1", "id": "usb1.0", "multifunction": true, "masterbus": "usb1.0", "addr": "0x1d.0x0", "firstport": 0, "bus": "pci.0"}' \ -device '{"driver": "ich9-usb-uhci2", "id": "usb1.1", "multifunction": true, "masterbus": "usb1.0", "addr": "0x1d.0x2", "firstport": 2, "bus": "pci.0"}' \ -device '{"driver": "ich9-usb-uhci3", "id": "usb1.2", "multifunction": true, "masterbus": "usb1.0", "addr": "0x1d.0x4", "firstport": 4, "bus": "pci.0"}' \ -device '{"driver": "usb-tablet", "id": "usb-tablet1", "bus": "usb1.0", "port": "1"}' \ -object '{"qom-type": "iothread", "id": "iothread0"}' \ -object '{"qom-type": "iothread", "id": "iothread1"}' \ -device '{"id": "virtio_scsi_pci0", "driver": "virtio-scsi-pci", "bus": "pci.0", "addr": "0x3", "iothread": "iothread0"}' \ -blockdev '{"node-name": "file_image1", "driver": "file", "auto-read-only": true, "discard": "unmap", "aio": "threads", "filename": "/home/kvm_autotest_root/images/rhel940-64-virtio-scsi.qcow2", "cache": {"direct": true, "no-flush": false}}' \ -blockdev '{"node-name": "drive_image1", "driver": "qcow2", "read-only": false, "cache": {"direct": true, "no-flush": false}, "file": "file_image1"}' \ -device '{"driver": "scsi-hd", "id": "image1", "drive": "drive_image1", "write-cache": "on"}' \ -device '{"driver": "virtio-net-pci", "mac": "9a:6a:03:9d:ca:d2", "id": "idum7zWo", "netdev": "id3PWiy2", "bus": "pci.0", "addr": "0x4"}' \ -netdev '{"id": "id3PWiy2", "type": "tap", "vhost": true}' \ -blockdev '{"node-name": "null-co_none", "driver": "null-co", "auto-read-only": true, "discard": "unmap"}' \ -blockdev '{"node-name": "drive_none", "driver": "raw", "read-only": true, "file": "null-co_none"}' \ -device '{"driver": "scsi-cd", "id": "none", "drive": "drive_none"}' \ -vnc :5 \ -monitor stdio \ -qmp tcp:0:5955,server=on,wait=off \ -boot menu=on,reboot-timeout=1000,strict=off \ \ -chardev socket,id=socket-serial,path=/var/tmp/socket-serial,logfile=/var/tmp/file-serial.log,mux=on,server=on,wait=off \ -serial chardev:socket-serial \ -chardev file,path=/var/tmp/file-bios.log,id=file-bios \ -device isa-debugcon,chardev=file-bios,iobase=0x402 \ \
3. execute QMP command
// code placeholder {"execute": "blockdev-change-medium", "arguments": {"id": "none", "filename": "/home/kvm_autotest_root/images/orig.iso", "force": true}, "id": "1rnPXCAn"}
Expected results
change cd-rom media
Actual results
Can not get QMP return
hang on:
(gdb) bt
#0 0x00007f3f31b429be in ppoll () at /lib64/libc.so.6
#1 0x00005644ee4af362 in qemu_poll_ns (fds=0x5644efa5aa50, timeout=-1, nfds=<optimized out>) at ../util/qemu-timer.c:339
#2 fdmon_poll_wait (ctx=0x5644efae7260, ready_list=0x7f3f30b28f10, timeout=-1) at ../util/fdmon-poll.c:79
#3 0x00005644ee4ae8d3 in aio_poll (ctx=0x5644efae7260, blocking=<optimized out>) at ../util/aio-posix.c:670
#4 0x00005644ee2e5fb1 in bdrv_graph_wrlock (bs=0x0) at ../block/graph-lock.c:145
#5 0x00005644ee2acbdb in bdrv_replace_child_noperm (child=0x5644f0b839c0, new_bs=0x0) at ../block.c:2897
#6 0x00005644ee2acaa1 in bdrv_root_unref_child (child=0x5644f0b839c0) at ../block.c:3227
#7 0x00005644edfef0d3 in blockdev_remove_medium (device=<optimized out>, id=<optimized out>, errp=0x7f3f30b28f30)
at ../block/qapi-sysemu.c:212
#8 0x00005644edfef70c in qmp_blockdev_change_medium
(device=0x0, id=0x5644efca4ea0 "none", filename=0x5644efc81d70 "/home/kvm_autotest_root/images/orig.iso", format=0x0, has_force=<optimized out>, force=true, has_read_only=<optimized out>, read_only=<optimized out>, errp=<optimized out>)
at ../block/qapi-sysemu.c:381
#9 0x00005644ee37cd89 in qmp_marshal_blockdev_change_medium (args=0x7f3790006620, ret=<optimized out>, errp=0x7f3f2f224fa0)
at qapi/qapi-commands-block.c:325
#10 0x00005644ee4a1ebf in do_qmp_dispatch_bh (opaque=0x7f3f2f224fa8) at ../qapi/qmp-dispatch.c:128
#11 0x00005644ee4ca1c1 in aio_bh_call (bh=0x7f3790004e30) at ../util/async.c:169
#12 aio_bh_poll (ctx=0x5644efae7260) at ../util/async.c:216
#13 0x00005644ee4addd4 in aio_dispatch (ctx=0x5644efae7260) at ../util/aio-posix.c:423
#14 0x00005644ee4cb60f in aio_ctx_dispatch (source=0x5644efa5aa50, callback=0x1, user_data=<optimized out>) at ../util/async.c:358
#15 0x00007f3f31f46f4f in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#16 0x00005644ee4cc56e in glib_pollfds_poll () at ../util/main-loop.c:2
Not hit this issue on
qemu-kvm-8.0.0-16.el9_3.1.x86_64
- is blocked by
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RHEL-14111 Rebase qemu-kvm to QEMU 8.2.0
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- Closed
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- links to
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RHBA-2023:121202
qemu-kvm bug fix and enhancement update
