#virsh dumpxml vm3 --xpath //interface
 <interface type="network">
  <mac address="52:54:00:c7:3e:6d"/>
  <source network="default" portid="ad2d6879-7cf0-4c44-9e39-9316d5397350" bridge="virbr0"/>
  <target dev="vnet27"/>
  <model type="virtio"/>
  <driver queues="2"/>
  <alias name="net0"/>
  <address type="pci" domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
</interface>

# virsh reboot vm3; sleep 1; virsh migrate vm3 qemu+ssh://*.test.com/system --live --verbose --persistent
Domain 'vm3' is being rebootedMigration: [100.00 %]error: operation failed: domain is no longer running
 

 # coredumpctl list
TIME                          PID UID GID SIG     COREFILE EXE                   SIZE  
Tue 2025-01-14 03:57:01 EST  8776 107 107 SIGSEGV present  /usr/libexec/qemu-kvm 3.2M

Core was generated by `/usr/libexec/qemu-kvm -name guest=vm3,debug-threads=on -S -object {"qom-type":"'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  aio_bh_enqueue (bh=0x0, new_flags=4) at ../util/async.c:74
warning: 74    ../util/async.c: No such file or directory
[Current thread is 1 (Thread 0xffffa73b7160 (LWP 16296))]
(gdb) 
(gdb) t a a btThread 7 (Thread 0xfffe8ebfe900 (LWP 16325)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0xaaaaffdbd218) at futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0xaaaaffdbd218) at futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0xaaaaffdbd218, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x0000ffffa7f4ff60 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0xaaaaffdbd228, cond=0xaaaaffdbd1f0) at pthread_cond_wait.c:504
#4  ___pthread_cond_wait (cond=0xaaaaffdbd1f0, mutex=0xaaaaffdbd228) at pthread_cond_wait.c:619
#5  0x0000aaaad9292efc in qemu_cond_wait_impl (cond=0xaaaaffdbd218, mutex=0xaaaaffdbd228, file=0xaaaad92d5b6c "../ui/vnc-jobs.c", line=248) at ../util/qemu-thread-posix.c:225
#6  0x0000aaaad8c70aa0 in vnc_worker_thread_loop (queue=0xaaaaffdbd1f0) at ../ui/vnc-jobs.c:248
#7  vnc_worker_thread (arg=arg@entry=0xaaaaffdbd1f0) at ../ui/vnc-jobs.c:362
#8  0x0000aaaad9293ac4 in qemu_thread_start (args=0xaaaaffdbd290) at ../util/qemu-thread-posix.c:541
#9  0x0000ffffa7f50c28 in start_thread (arg=0x80e140) at pthread_create.c:443
#10 0x0000ffffa7fbb21c in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:79Thread 6 (Thread 0xfffe8fbfe900 (LWP 16324)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0xaaaaff8666e8) at futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0xaaaaff8666e8) at futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0xaaaaff8666e8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x0000ffffa7f4ff60 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0xaaaada08bf40 <bql>, cond=0xaaaaff8666c0) at pthread_cond_wait.c:504
#4  ___pthread_cond_wait (cond=0xaaaaff8666c0, mutex=0xaaaada08bf40 <bql>) at pthread_cond_wait.c:619
#5  0x0000aaaad9292efc in qemu_cond_wait_impl (cond=0xaaaaff8666e8, mutex=0xaaaada08bf40 <bql>, file=0xaaaad92f2280 "../system/cpus.c", line=462) at ../util/qemu-thread-posix.c:225
#6  0x0000aaaad8d309c4 in qemu_wait_io_event (cpu=cpu@entry=0xaaaaff874fc0) at ../system/cpus.c:462
#7  0x0000aaaad90e52cc in kvm_vcpu_thread_fn (arg=arg@entry=0xaaaaff874fc0) at ../accel/kvm/kvm-accel-ops.c:55
#8  0x0000aaaad9293ac4 in qemu_thread_start (args=0xaaaaff88d150) at ../util/qemu-thread-posix.c:541
#9  0x0000ffffa7f50c28 in start_thread (arg=0x80e140) at pthread_create.c:443
#10 0x0000ffffa7fbb21c in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:79
Thread 5 (Thread 0xffffa4e4e900 (LWP 16323)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0xaaaaff7df238) at futex-internal.c:57
--Type <RET> for more, q to quit, c to continue without paging--
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0xaaaaff7df238) at futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0xaaaaff7df238, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x0000ffffa7f4ff60 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0xaaaada08bf40 <bql>, cond=0xaaaaff7df210) at pthread_cond_wait.c:504
#4  ___pthread_cond_wait (cond=0xaaaaff7df210, mutex=0xaaaada08bf40 <bql>) at pthread_cond_wait.c:619
#5  0x0000aaaad9292efc in qemu_cond_wait_impl (cond=0xaaaaff7df238, mutex=0xaaaada08bf40 <bql>, file=0xaaaad92f2280 "../system/cpus.c", line=462) at ../util/qemu-thread-posix.c:225
#6  0x0000aaaad8d309c4 in qemu_wait_io_event (cpu=cpu@entry=0xaaaaff829d60) at ../system/cpus.c:462
#7  0x0000aaaad90e52cc in kvm_vcpu_thread_fn (arg=arg@entry=0xaaaaff829d60) at ../accel/kvm/kvm-accel-ops.c:55
#8  0x0000aaaad9293ac4 in qemu_thread_start (args=0xaaaaff86cae0) at ../util/qemu-thread-posix.c:541
#9  0x0000ffffa7f50c28 in start_thread (arg=0x80e140) at pthread_create.c:443
#10 0x0000ffffa7fbb21c in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:79Thread 4 (Thread 0xffffa576e900 (LWP 16322)):
#0  0x0000ffffa7fb0fa0 in __GI___poll (fds=0xffff9c0135e0, nfds=3, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:41
#1  0x0000ffffa842af20 in g_main_context_poll (priority=<optimized out>, n_fds=3, fds=0xffff9c0135e0, timeout=<optimized out>, context=0xaaaaff6c52d0) at ../glib/gmain.c:4458
#2  g_main_context_iterate.constprop.0 (context=0xaaaaff6c52d0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4150
#3  0x0000ffffa83d471c in g_main_loop_run (loop=0xaaaaff6c5390) at ../glib/gmain.c:4353
#4  0x0000aaaad915a374 in iothread_run (opaque=opaque@entry=0xaaaaff6c9450) at ../iothread.c:70
#5  0x0000aaaad9293ac4 in qemu_thread_start (args=0xaaaaff6c53b0) at ../util/qemu-thread-posix.c:541
#6  0x0000ffffa7f50c28 in start_thread (arg=0x80e140) at pthread_create.c:443
#7  0x0000ffffa7fbb21c in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:79Thread 3 (Thread 0xffffa62ce900 (LWP 16319)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0xffffa62cdf38, op=393, expected=0, futex_word=0xaaaaff693d68) at futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0xffffa62cdf38, clockid=0, expected=0, futex_word=0xaaaaff693d68) at futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0xaaaaff693d68, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0xffffa62cdf38, private=private@entry=0) at futex-internal.c:139
#3  0x0000ffffa7f50270 in __pthread_cond_wait_common (abstime=0xffffa62cdf38, clockid=0, mutex=0xaaaaff693cd0, cond=0xaaaaff693d40) at pthread_cond_wait.c:504
--Type <RET> for more, q to quit, c to continue without paging--
#4  ___pthread_cond_timedwait64 (cond=0xaaaaff693d40, mutex=0xaaaaff693cd0, abstime=0xffffa62cdf38) at pthread_cond_wait.c:644
#5  0x0000aaaad9293114 in qemu_cond_timedwait_ts (cond=0xaaaaff693d68, cond@entry=0xaaaaff693d40, mutex=mutex@entry=0xaaaaff693cd0, ts=0x0, ts@entry=0xffffa62cdf38, file=file@entry=0xaaaad9386811 "../util/thread-pool.c", line=line@entry=91) at ../util/qemu-thread-posix.c:239
#6  0x0000aaaad929306c in qemu_cond_timedwait_impl (cond=0xaaaaff693d40, mutex=0xaaaaff693cd0, ms=10000, file=0xaaaad9386811 "../util/thread-pool.c", line=91) at ../util/qemu-thread-posix.c:253
#7  0x0000aaaad92acfb4 in worker_thread (opaque=opaque@entry=0xaaaaff693cc0) at ../util/thread-pool.c:91
#8  0x0000aaaad9293ac4 in qemu_thread_start (args=0xaaaaff791960) at ../util/qemu-thread-posix.c:541
#9  0x0000ffffa7f50c28 in start_thread (arg=0x80e140) at pthread_create.c:443
#10 0x0000ffffa7fbb21c in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:79Thread 2 (Thread 0xffffa6cfe900 (LWP 16318)):
#0  0x0000ffffa7f85b64 in __GI___clock_nanosleep (clock_id=<optimized out>, clock_id@entry=0, flags=flags@entry=0, req=req@entry=0xffffa6cfdf58, rem=rem@entry=0xffffa6cfdf48) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
#1  0x0000ffffa7f8ac8c in __GI___nanosleep (req=req@entry=0xffffa6cfdf58, rem=rem@entry=0xffffa6cfdf48) at ../sysdeps/unix/sysv/linux/nanosleep.c:25
#2  0x0000ffffa83ff140 in g_usleep (microseconds=microseconds@entry=10000) at ../glib/gtimer.c:277
#3  0x0000aaaad92a0028 in call_rcu_thread (opaque=<optimized out>) at ../util/rcu.c:270
#4  0x0000aaaad9293ac4 in qemu_thread_start (args=0xaaaaff6559e0) at ../util/qemu-thread-posix.c:541
#5  0x0000ffffa7f50c28 in start_thread (arg=0x80e140) at pthread_create.c:443
#6  0x0000ffffa7fbb21c in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:79
Thread 1 (Thread 0xffffa73b7160 (LWP 16296)):
#0  aio_bh_enqueue (bh=0x0, new_flags=4) at ../util/async.c:74
#1  qemu_bh_delete (bh=0x0) at ../util/async.c:250
#2  0x0000aaaad9044168 in virtio_net_del_queue (n=<optimized out>, index=<optimized out>) at ../hw/net/virtio-net.c:2983
#3  0x0000aaaad904424c in virtio_net_change_num_queue_pairs (n=0xaaab017590e0, new_max_queue_pairs=2) at ../hw/net/virtio-net.c:3013
#4  virtio_net_set_multiqueue (n=n@entry=0xaaab017590e0, multiqueue=<optimized out>) at ../hw/net/virtio-net.c:3030
#5  0x0000aaaad9040188 in virtio_net_set_features (vdev=0xaaab017590e0, features=0) at ../hw/net/virtio-net.c:961
#6  0x0000aaaad9064410 in virtio_set_features_nocheck (vdev=0xaaab017590e0, val=0) at ../hw/virtio/virtio.c:3093
#7  virtio_set_features_nocheck_bh (opaque=0xffffa63df938) at ../hw/virtio/virtio.c:3110
#8  0x0000aaaad92a8b28 in aio_bh_call (bh=0xffff9c01c9c0) at ../util/async.c:171
#9  aio_bh_poll (ctx=ctx@entry=0xaaaaff6c1b20) at ../util/async.c:218
#10 0x0000aaaad928f340 in aio_dispatch (ctx=0xaaaaff6c1b20) at ../util/aio-posix.c:423
#11 0x0000aaaad92a98b4 in aio_ctx_dispatch (source=0x5, callback=0x0, user_data=<optimized out>) at ../util/async.c:360
#12 0x0000ffffa83d50c0 in g_main_dispatch (context=0xaaaaff65d100) at ../glib/gmain.c:3364
--Type <RET> for more, q to quit, c to continue without paging--
#13 g_main_context_dispatch (context=0xaaaaff65d100) at ../glib/gmain.c:4079
#14 0x0000aaaad92aa0bc in glib_pollfds_poll () at ../util/main-loop.c:287
#15 os_host_main_loop_wait (timeout=<optimized out>) at ../util/main-loop.c:310
#16 main_loop_wait (nonblocking=<optimized out>, nonblocking@entry=-495482768) at ../util/main-loop.c:589
#17 0x0000aaaad8d3c074 in qemu_main_loop () at ../system/runstate.c:826
#18 0x0000aaaad91f71e0 in qemu_default_main () at ../system/main.c:37
#19 0x0000ffffa7ef7280 in __libc_start_call_main (main=main@entry=0xaaaad91f71f8 <main>, argc=argc@entry=119, argv=argv@entry=0xffffe2778a78) at ../sysdeps/nptl/libc_start_call_main.h:58
#20 0x0000ffffa7ef7358 in __libc_start_main_impl (main=0xaaaad91f71f8 <main>, argc=119, argv=0xffffe2778a78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:389
#21 0x0000aaaad8c435b0 in _start ()