qemu-system-aarch64: ../net/net.c:1021: net_client_init1: Assertion `nc' failed.

root@cloud:/data1/core# gdb /usr/local/bin/qemu-system-aarch64  /data1/core/core-qemu-system-aar-8045_1605236787
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Reading symbols from /usr/local/bin/qemu-system-aarch64...(no debugging symbols found)...done.

warning: core file may not match specified executable file.
[New LWP 8045]
[New LWP 8046]
[New LWP 8047]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
Core was generated by `qemu-system-aarch64 -machine virt,usb=off,accel=kvm,gic-version=3,nvdimm -cpu h'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51      ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0xffffae6dc010 (LWP 8045))]
(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x0000ffffae786884 in __GI_abort () at abort.c:79
#2  0x0000ffffae77eb44 in __assert_fail_base (fmt=0xffffae87b0c0 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0xaaaad1888e98 "nc", 
    file=file@entry=0xaaaad1804d90 "../net/net.c", line=line@entry=1021, function=function@entry=0xaaaad1804cc0 "net_client_init1") at assert.c:92
#3  0x0000ffffae77ebc4 in __GI___assert_fail (assertion=0xaaaad1888e98 "nc", file=0xaaaad1804d90 "../net/net.c", line=1021, function=0xaaaad1804cc0 "net_client_init1") at assert.c:101
#4  0x0000aaaad1200304 in ?? ()
#5  0x0000aaaad1ba9000 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
(gdb)