[virtio_blk:iothread-vq-mapping]Qemu core dump when checking the deleted device via "info qtree"
Host environment
- Operating system: RHEL9
- Architecture: x86_64
- QEMU flavor: qemu-system-x86_64
- QEMU version: qemu-img version 8.2.50 (v8.2.0-196-g7425b627)
Emulated/Virtualized environment
- Operating system:
- OS/kernel version:
- Architecture:
Description of problem
[virtio_blk:iothread-vq-mapping]Qemu core dump when checking the deleted device via "info qtree"
Steps to reproduce
1.Start guest with qemu cmds: 
qemu-system-x86_64 
-S  
-name 'avocado-vt-vm1' 
-machine pc,memory-backend=mem-machine_mem  
-nodefaults 
-device '{"driver": "VGA", "bus": "pci.0", "addr": "0x2"}' 
-m 30720 
-object '{"size": 32212254720, "id": "mem-machine_mem", "qom-type": "memory-backend-ram"}'  
-smp 10,maxcpus=10,cores=5,threads=1,dies=1,sockets=2  
-cpu 'Cascadelake-Server-noTSX',+kvm_pv_unhalt 
-chardev socket,path=/tmp/monitor-qmpmonitor1-20240104-043347-5Miq4hMP,wait=off,server=on,id=qmp_id_qmpmonitor1  
-mon chardev=qmp_id_qmpmonitor1,mode=control 
-chardev socket,path=tmp/monitor-catch_monitor-20240104-043347-5Miq4hMP,wait=off,server=on,id=qmp_id_catch_monitor  
-mon chardev=qmp_id_catch_monitor,mode=control 
-device '{"ioport": 1285, "driver": "pvpanic", "id": "id3KTLMV"}' 
-chardev socket,path=/tmp/serial-serial0-20240104-043347-5Miq4hMP,wait=off,server=on,id=chardev_serial0 
-device '{"id": "serial0", "driver": "isa-serial", "chardev": "chardev_serial0"}'  
-chardev socket,id=seabioslog_id_20240104-043347-5Miq4hMP,path=/tmp/seabios-20240104-043347-5Miq4hMP,server=on,wait=off 
-device isa-debugcon,chardev=seabioslog_id_20240104-043347-5Miq4hMP,iobase=0x402 
-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": "t1"}' 
-object '{"qom-type": "iothread", "id": "t2"}' 
-object '{"qom-type": "iothread", "id": "t3"}' 
-object '{"qom-type": "iothread", "id": "t4"}' 
-blockdev '{"node-name": "file_image1", "driver": "file", "auto-read-only": true, "discard": "unmap", "aio": "threads", "filename": "/home/kvm_autotest_root/images/rhel9-virtio.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": "virtio-blk-pci", "id": "image1", "drive": "drive_image1", "bootindex": 0, "write-cache": "on", "bus": "pci.0", "addr": "0x3"}' 
-blockdev '{"node-name": "file_stg1", "driver": "file", "auto-read-only": true, "discard": "unmap", "aio": "threads", "filename": "/home/kvm_autotest_root/images/stg1.qcow2", "cache": {"direct": true, "no-flush": false}}' 
-blockdev '{"node-name": "drive_stg1", "driver": "qcow2", "read-only": false, "cache": {"direct": true, "no-flush": false}, "file": "file_stg1"}' 
-device '{"driver": "virtio-blk-pci", "id": "stg1", "drive": "drive_stg1", "bootindex": 1, "write-cache": "on", "serial": "stg1", "bus": "pci.0", "addr": "0x4", "iothread-vq-mapping": [{"iothread": "t2"}, {"iothread": "t3"}]}' 
-blockdev '{"node-name": "file_stg2", "driver": "file", "auto-read-only": true, "discard": "unmap", "aio": "threads", "filename": "/home/kvm_autotest_root/images/stg2.qcow2", "cache": {"direct": true, "no-flush": false}}' 
-blockdev '{"node-name": "drive_stg2", "driver": "qcow2", "read-only": false, "cache": {"direct": true, "no-flush": false}, "file": "file_stg2"}' 
-device '{"driver": "virtio-blk-pci", "id": "stg2", "drive": "drive_stg2", "bootindex": 2, "write-cache": "on", "serial": "stg2", "num-queues": 6, "iothread-vq-mapping": [{"iothread": "t1", "vqs": [0, 1, 2]}, {"iothread": "t2", "vqs": [3]}, {"iothread": "t4", "vqs": [4, 5]}], "bus": "pci.0", "addr": "0x5"}' 
-device '{"driver": "virtio-net-pci", "mac": "9a:5b:6c:5f:5b:5b", "id": "iddNmpYv", "netdev": "idG9Emyl", "bus": "pci.0", "addr": "0x6"}' 
-netdev  '{"id": "idG9Emyl", "type": "tap", "vhost": true}'  
-vnc :0  
-rtc base=utc,clock=host,driftfix=slew  
-boot menu=off,order=cdn,once=c,strict=off 
-enable-kvm \
- 
Continue VM: 
 {"execute": "cont"} \
- 
Check disk info before hot unplug: 
 (guest)#ls /dev/[vhs]d* | grep -v [0-9]$ \
- 
Unplug device from vm: 
 {"execute": "device_del", "arguments": {"id": "stg1"}}
 {"timestamp": {"seconds": 1704360854, "microseconds": 751289}, "event": "DEVICE_DELETED", "data": {"path": "/machine/peripheral/stg1/virtio-backend"}}
 {"timestamp": {"seconds": 1704360854, "microseconds": 752078}, "event": "DEVICE_DELETED", "data": {"device": "stg1", "path": "/machine/peripheral/stg1"}} \
- 
Check device info via "info qtree": 
 {"execute": "human-monitor-command", "arguments": {"command-line": "info qtree"}} \
Actual Result: 
After step5, qemu core dump with info: 
qemu-system-x86_64: ../qapi/string-output-visitor.c:316: start_list: Assertion `sov->list_mode == LM_NONE' failed. 
/tmp/aexpect_fNRmaiS3/aexpect-okx056xs.sh: line 1: 480254 Aborted                 (core dumped) MALLOC_PERTURB_=1  qemu-system-x86_64 -S -name 'avocado-vt-vm1' -machine pc,memory-backend=mem-machine_mem ... \
Coredump info as bellow: 
#coredumpctl debug 480254 
Stack trace of thread 480254:
#0  0x00007f9397ea365c __pthread_kill_implementation (libc.so.6 + 0xa365c) 
#1  0x00007f9397e54d06 __GI_raise (libc.so.6 + 0x54d06) 
#2  0x00007f9397e287f3 __GI_abort (libc.so.6 + 0x287f3) 
#3  0x00007f9397e2871b __assert_fail_base (libc.so.6 + 0x2871b) 
#4  0x00007f9397e4dca6 __assert_fail (libc.so.6 + 0x4dca6) 
#5  0x000056472e810e0d start_list (qemu-system-x86_64 + 0xa92e0d) 
#6  0x000056472e80acb9 visit_start_list (qemu-system-x86_64 + 0xa8ccb9) 
#7  0x000056472e75e9c0 visit_type_uint16List (qemu-system-x86_64 + 0x9e09c0) 
#8  0x000056472e7e9955 visit_type_IOThreadVirtQueueMapping_members (qemu-system-x86_64 + 0xa6b955) 
#9  0x000056472e7e9a1b visit_type_IOThreadVirtQueueMapping (qemu-system-x86_64 + 0xa6ba1b) 
#10 0x000056472e7e9b0d visit_type_IOThreadVirtQueueMappingList (qemu-system-x86_64 + 0xa6bb0d) 
#11 0x000056472e1519b2 get_iothread_vq_mapping_list (qemu-system-x86_64 + 0x3d39b2) 
#12 0x000056472e629d0f field_prop_get (qemu-system-x86_64 + 0x8abd0f) 
#13 0x000056472e635b24 object_property_get (qemu-system-x86_64 + 0x8b7b24) 
#14 0x000056472e6368b3 object_property_print (qemu-system-x86_64 + 0x8b88b3) 
#15 0x000056472e38f97a qdev_print_props (qemu-system-x86_64 + 0x61197a) 
#16 0x000056472e38fc9f qdev_print (qemu-system-x86_64 + 0x611c9f) 
#17 0x000056472e38fdd9 qbus_print (qemu-system-x86_64 + 0x611dd9) 
#18 0x000056472e38fd03 qdev_print (qemu-system-x86_64 + 0x611d03) 
#19 0x000056472e38fdd9 qbus_print (qemu-system-x86_64 + 0x611dd9) 
#20 0x000056472e38fd03 qdev_print (qemu-system-x86_64 + 0x611d03) 
#21 0x000056472e38fdd9 qbus_print (qemu-system-x86_64 + 0x611dd9) 
#22 0x000056472e38fe26 hmp_info_qtree (qemu-system-x86_64 + 0x611e26) 
#23 0x000056472e3ed6ed handle_hmp_command_exec (qemu-system-x86_64 + 0x66f6ed) 
#24 0x000056472e3ed91a handle_hmp_command (qemu-system-x86_64 + 0x66f91a) 
#25 0x000056472e3eef02 qmp_human_monitor_command (qemu-system-x86_64 + 0x670f02) 
#26 0x000056472e7cc89b qmp_marshal_human_monitor_command (qemu-system-x86_64 + 0xa4e89b) 
#27 0x000056472e8117d0 do_qmp_dispatch_bh (qemu-system-x86_64 + 0xa937d0) 
#28 0x000056472e83be78 aio_bh_call (qemu-system-x86_64 + 0xabde78) 
#29 0x000056472e83bf93 aio_bh_poll (qemu-system-x86_64 + 0xabdf93) 
#30 0x000056472e81eb3e aio_dispatch (qemu-system-x86_64 + 0xaa0b3e) 
#31 0x000056472e83c3d2 aio_ctx_dispatch (qemu-system-x86_64 + 0xabe3d2) 
#32 0x00007f939829ff4f g_main_dispatch (libglib-2.0.so.0 + 0x54f4f) 
#33 0x000056472e83d8a8 glib_pollfds_poll (qemu-system-x86_64 + 0xabf8a8) 
#34 0x000056472e83d925 os_host_main_loop_wait (qemu-system-x86_64 + 0xabf925) 
#35 0x000056472e83da33 main_loop_wait (qemu-system-x86_64 + 0xabfa33) 
#36 0x000056472e396150 qemu_main_loop (qemu-system-x86_64 + 0x618150) 
#37 0x000056472e628b7f qemu_default_main (qemu-system-x86_64 + 0x8aab7f) 
#38 0x000056472e628bba main (qemu-system-x86_64 + 0x8aabba) 
#39 0x00007f9397e3feb0 __libc_start_call_main (libc.so.6 + 0x3feb0) 
#40 0x00007f9397e3ff60 __libc_start_main_impl (libc.so.6 + 0x3ff60) 
#41 0x000056472e08e435 _start (qemu-system-x86_64 + 0x310435) 
Stack trace of thread 480255: 
#0  0x00007f9397e3ee5d syscall (libc.so.6 + 0x3ee5d) 
#1  0x000056472e82343c qemu_futex_wait (qemu-system-x86_64 + 0xaa543c) 
#2  0x000056472e823623 qemu_event_wait (qemu-system-x86_64 + 0xaa5623) 
#3  0x000056472e830d03 call_rcu_thread (qemu-system-x86_64 + 0xab2d03) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480258: 
#0  0x00007f9397f429be __ppoll (libc.so.6 + 0x1429be) 
#1  0x000056472e841cf0 qemu_poll_ns (qemu-system-x86_64 + 0xac3cf0) 
#2  0x000056472e81f95f fdmon_poll_wait (qemu-system-x86_64 + 0xaa195f) 
#3  0x000056472e81f29b aio_poll (qemu-system-x86_64 + 0xaa129b) 
#4  0x000056472e67440c iothread_run (qemu-system-x86_64 + 0x8f640c) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480266: 
#0  0x00007f9397e3ec6b ioctl (libc.so.6 + 0x3ec6b) 
#1  0x000056472e619a24 kvm_vcpu_ioctl (qemu-system-x86_64 + 0x89ba24) 
#2  0x000056472e619236 kvm_cpu_exec (qemu-system-x86_64 + 0x89b236) 
#3  0x000056472e61c0fc kvm_vcpu_thread_fn (qemu-system-x86_64 + 0x89e0fc) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480267: 
#0  0x00007f9397e3ec6b ioctl (libc.so.6 + 0x3ec6b) 
#1  0x000056472e619a24 kvm_vcpu_ioctl (qemu-system-x86_64 + 0x89ba24) 
#2  0x000056472e619236 kvm_cpu_exec (qemu-system-x86_64 + 0x89b236) 
#3  0x000056472e61c0fc kvm_vcpu_thread_fn (qemu-system-x86_64 + 0x89e0fc) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480257: 
#0  0x00007f9397f429be __ppoll (libc.so.6 + 0x1429be) 
#1  0x000056472e841cf0 qemu_poll_ns (qemu-system-x86_64 + 0xac3cf0) 
#2  0x000056472e81f95f fdmon_poll_wait (qemu-system-x86_64 + 0xaa195f) 
#3  0x000056472e81f29b aio_poll (qemu-system-x86_64 + 0xaa129b) 
#4  0x000056472e67440c iothread_run (qemu-system-x86_64 + 0x8f640c) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480256: 
#0  0x00007f9397f429be __ppoll (libc.so.6 + 0x1429be) 
#1  0x000056472e841d87 qemu_poll_ns (qemu-system-x86_64 + 0xac3d87) 
#2  0x000056472e81f95f fdmon_poll_wait (qemu-system-x86_64 + 0xaa195f) 
#3  0x000056472e81f29b aio_poll (qemu-system-x86_64 + 0xaa129b) 
#4  0x000056472e67440c iothread_run (qemu-system-x86_64 + 0x8f640c) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480260: 
#0  0x00007f9397e9e4aa __futex_abstimed_wait_common64 (libc.so.6 + 0x9e4aa) 
#1  0x00007f9397ea0fb4 __pthread_cond_wait_common (libc.so.6 + 0xa0fb4) 
#2  0x000056472e823041 qemu_cond_timedwait_ts (qemu-system-x86_64 + 0xaa5041) 
#3  0x000056472e8230dc qemu_cond_timedwait_impl (qemu-system-x86_64 + 0xaa50dc) 
#4  0x000056472e840595 worker_thread (qemu-system-x86_64 + 0xac2595) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480264: 
#0  0x00007f9397f428bf __GI___poll (libc.so.6 + 0x1428bf) 
#1  0x00007f93982f51fc g_main_context_poll (libglib-2.0.so.0 + 0xaa1fc) 
#2  0x00007f939829f5a3 g_main_loop_run (libglib-2.0.so.0 + 0x545a3) 
#3  0x000056472e67443f iothread_run (qemu-system-x86_64 + 0x8f643f) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480274: 
#0  0x00007f9397e3ec6b ioctl (libc.so.6 + 0x3ec6b) 
#1  0x000056472e619a24 kvm_vcpu_ioctl (qemu-system-x86_64 + 0x89ba24) 
#2  0x000056472e619236 kvm_cpu_exec (qemu-system-x86_64 + 0x89b236) 
#3  0x000056472e61c0fc kvm_vcpu_thread_fn (qemu-system-x86_64 + 0x89e0fc) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480337: 
#0  0x00007f9397e9e4aa __futex_abstimed_wait_common64 (libc.so.6 + 0x9e4aa) 
#1  0x00007f9397ea0fb4 __pthread_cond_wait_common (libc.so.6 + 0xa0fb4) 
#2  0x000056472e823041 qemu_cond_timedwait_ts (qemu-system-x86_64 + 0xaa5041) 
#3  0x000056472e8230dc qemu_cond_timedwait_impl (qemu-system-x86_64 + 0xaa50dc) 
#4  0x000056472e840595 worker_thread (qemu-system-x86_64 + 0xac2595) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480273: 
#0  0x00007f9397e3ec6b ioctl (libc.so.6 + 0x3ec6b) 
#1  0x000056472e619a24 kvm_vcpu_ioctl (qemu-system-x86_64 + 0x89ba24) 
#2  0x000056472e619236 kvm_cpu_exec (qemu-system-x86_64 + 0x89b236) 
#3  0x000056472e61c0fc kvm_vcpu_thread_fn (qemu-system-x86_64 + 0x89e0fc) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480358: 
#0  0x00007f9397e9e4aa __futex_abstimed_wait_common64 (libc.so.6 + 0x9e4aa) 
#1  0x00007f9397ea0fb4 __pthread_cond_wait_common (libc.so.6 + 0xa0fb4) 
#2  0x000056472e823041 qemu_cond_timedwait_ts (qemu-system-x86_64 + 0xaa5041) 
#3  0x000056472e8230dc qemu_cond_timedwait_impl (qemu-system-x86_64 + 0xaa50dc) 
#4  0x000056472e840595 worker_thread (qemu-system-x86_64 + 0xac2595) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480276: 
#0  0x00007f9397e9e4aa __futex_abstimed_wait_common64 (libc.so.6 + 0x9e4aa) 
#1  0x00007f9397ea0cb0 __pthread_cond_wait_common (libc.so.6 + 0xa0cb0) 
#2  0x000056472e822f8e qemu_cond_wait_impl (qemu-system-x86_64 + 0xaa4f8e) 
#3  0x000056472e0c6f39 vnc_worker_thread_loop (qemu-system-x86_64 + 0x348f39) 
#4  0x000056472e0c7544 vnc_worker_thread (qemu-system-x86_64 + 0x349544) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480259: 
#0  0x00007f9397f429be __ppoll (libc.so.6 + 0x1429be) 
#1  0x000056472e841cf0 qemu_poll_ns (qemu-system-x86_64 + 0xac3cf0) 
#2  0x000056472e81f95f fdmon_poll_wait (qemu-system-x86_64 + 0xaa195f) 
#3  0x000056472e81f29b aio_poll (qemu-system-x86_64 + 0xaa129b) 
#4  0x000056472e67440c iothread_run (qemu-system-x86_64 + 0x8f640c) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480357: 
#0  0x00007f9397e9e4aa __futex_abstimed_wait_common64 (libc.so.6 + 0x9e4aa) 
#1  0x00007f9397ea0fb4 __pthread_cond_wait_common (libc.so.6 + 0xa0fb4) 
#2  0x000056472e823041 qemu_cond_timedwait_ts (qemu-system-x86_64 + 0xaa5041) 
#3  0x000056472e8230dc qemu_cond_timedwait_impl (qemu-system-x86_64 + 0xaa50dc) 
#4  0x000056472e840595 worker_thread (qemu-system-x86_64 + 0xac2595) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912)
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480268: 
#0  0x00007f9397e3ec6b ioctl (libc.so.6 + 0x3ec6b) 
#1  0x000056472e619a24 kvm_vcpu_ioctl (qemu-system-x86_64 + 0x89ba24) 
#2  0x000056472e619236 kvm_cpu_exec (qemu-system-x86_64 + 0x89b236) 
#3  0x000056472e61c0fc kvm_vcpu_thread_fn (qemu-system-x86_64 + 0x89e0fc) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480269: 
#0  0x00007f9397e3ec6b ioctl (libc.so.6 + 0x3ec6b) 
#1  0x000056472e619a24 kvm_vcpu_ioctl (qemu-system-x86_64 + 0x89ba24) 
#2  0x000056472e619236 kvm_cpu_exec (qemu-system-x86_64 + 0x89b236) 
#3  0x000056472e61c0fc kvm_vcpu_thread_fn (qemu-system-x86_64 + 0x89e0fc) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480353: 
#0  0x00007f9397e9e4aa __futex_abstimed_wait_common64 (libc.so.6 + 0x9e4aa) 
#1  0x00007f9397ea0fb4 __pthread_cond_wait_common (libc.so.6 + 0xa0fb4) 
#2  0x000056472e823041 qemu_cond_timedwait_ts (qemu-system-x86_64 + 0xaa5041) 
#3  0x000056472e8230dc qemu_cond_timedwait_impl (qemu-system-x86_64 + 0xaa50dc) 
#4  0x000056472e840595 worker_thread (qemu-system-x86_64 + 0xac2595) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480271: 
#0  0x00007f9397e3ec6b ioctl (libc.so.6 + 0x3ec6b) 
#1  0x000056472e619a24 kvm_vcpu_ioctl (qemu-system-x86_64 + 0x89ba24) 
#2  0x000056472e619236 kvm_cpu_exec (qemu-system-x86_64 + 0x89b236) 
#3  0x000056472e61c0fc kvm_vcpu_thread_fn (qemu-system-x86_64 + 0x89e0fc) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480354: 
#0  0x00007f9397e9e4aa __futex_abstimed_wait_common64 (libc.so.6 + 0x9e4aa) 
#1  0x00007f9397ea0fb4 __pthread_cond_wait_common (libc.so.6 + 0xa0fb4) 
#2  0x000056472e823041 qemu_cond_timedwait_ts (qemu-system-x86_64 + 0xaa5041) 
#3  0x000056472e8230dc qemu_cond_timedwait_impl (qemu-system-x86_64 + 0xaa50dc) 
#4  0x000056472e840595 worker_thread (qemu-system-x86_64 + 0xac2595) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480356: 
#0  0x00007f9397e9e4aa __futex_abstimed_wait_common64 (libc.so.6 + 0x9e4aa) 
#1  0x00007f9397ea0fb4 __pthread_cond_wait_common (libc.so.6 + 0xa0fb4) 
#2  0x000056472e823041 qemu_cond_timedwait_ts (qemu-system-x86_64 + 0xaa5041) 
#3  0x000056472e8230dc qemu_cond_timedwait_impl (qemu-system-x86_64 + 0xaa50dc) 
#4  0x000056472e840595 worker_thread (qemu-system-x86_64 + 0xac2595) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480355: 
#0  0x00007f9397e9e4aa __futex_abstimed_wait_common64 (libc.so.6 + 0x9e4aa) 
#1  0x00007f9397ea0fb4 __pthread_cond_wait_common (libc.so.6 + 0xa0fb4) 
#2  0x000056472e823041 qemu_cond_timedwait_ts (qemu-system-x86_64 + 0xaa5041) 
#3  0x000056472e8230dc qemu_cond_timedwait_impl (qemu-system-x86_64 + 0xaa50dc) 
#4  0x000056472e840595 worker_thread (qemu-system-x86_64 + 0xac2595) 
#5  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#6  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#7  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480270: 
#0  0x00007f9397e3ec6b ioctl (libc.so.6 + 0x3ec6b) 
#1  0x000056472e619a24 kvm_vcpu_ioctl (qemu-system-x86_64 + 0x89ba24) 
#2  0x000056472e619236 kvm_cpu_exec (qemu-system-x86_64 + 0x89b236) 
#3  0x000056472e61c0fc kvm_vcpu_thread_fn (qemu-system-x86_64 + 0x89e0fc) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480272: 
#0  0x00007f9397e3ec6b ioctl (libc.so.6 + 0x3ec6b) 
#1  0x000056472e619a24 kvm_vcpu_ioctl (qemu-system-x86_64 + 0x89ba24) 
#2  0x000056472e619236 kvm_cpu_exec (qemu-system-x86_64 + 0x89b236) 
#3  0x000056472e61c0fc kvm_vcpu_thread_fn (qemu-system-x86_64 + 0x89e0fc) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
Stack trace of thread 480265: 
#0  0x00007f9397e3ec6b ioctl (libc.so.6 + 0x3ec6b) 
#1  0x000056472e619a24 kvm_vcpu_ioctl (qemu-system-x86_64 + 0x89ba24) 
#2  0x000056472e619236 kvm_cpu_exec (qemu-system-x86_64 + 0x89b236) 
#3  0x000056472e61c0fc kvm_vcpu_thread_fn (qemu-system-x86_64 + 0x89e0fc) 
#4  0x000056472e8237d6 qemu_thread_start (qemu-system-x86_64 + 0xaa57d6) 
#5  0x00007f9397ea1912 start_thread (libc.so.6 + 0xa1912) 
#6  0x00007f9397e3f450 __clone3 (libc.so.6 + 0x3f450) 
ELF object binary architecture: AMD x86-64 \