sigfaul on netdev stream Description of problem: qemu sigfault if use netdev socket and hubport Steps to reproduce: 1. Preconfigure network interface on /etc/network/interface or try connect from qemu server port another qemu process or other softvare (gnuradio, etc) ``` auto qt-test0 iface qt-test0 address 192.168.10.1/30 mtu 16384 pre-up ip tuntap add $IFACE mode tap post-down ip link del dev $IFACE ``` 2. Run qemu from the cmdline Additional information: ``` (gdb) bt #0 0x0000555555b547d0 in object_get_class () #1 0x0000555555b9d44c in qio_channel_writev () #2 0x000055555598295c in ?? () #3 0x000055555597cf67 in ?? () #4 0x0000555555980eb9 in qemu_net_queue_send_iov () #5 0x000055555597b8e4 in ?? () #6 0x000055555597ce32 in ?? () #7 0x0000555555980df5 in qemu_net_queue_send () #8 0x000055555598fb52 in ?? () #9 0x0000555555d26755 in ?? () #10 0x0000555555d270d2 in aio_dispatch () #11 0x0000555555d3f5ef in ?? () #12 0x00007ffff70f100e in ?? () from /usr/lib/libglib-2.0.so.0 #13 0x00007ffff70f4988 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #14 0x0000555555d40f69 in main_loop_wait () #15 0x000055555592fc83 in qemu_main_loop () #16 0x0000555555c7c817 in qemu_default_main () #17 0x00007ffff7f9a496 in libc_start_main_stage2 (main=0x5555556cc0f0
, argc=12, argv=0x7fffffffebd8) at src/env/__libc_start_main.c:95 #18 0x00005555556cd0d8 in _start () ```