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id = 2767
title = "sigfaul on netdev stream"
state = "opened"
created_at = "2025-01-08T02:37:21.923Z"
closed_at = "n/a"
labels = ["Networking"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/2767"
host-os = "alpine linux 3.21"
host-arch = "amd64"
qemu-version = "9.1.2"
guest-os = "none"
guest-arch = "none"
description = """qemu sigfault if use netdev socket and hubport"""
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 = """```
(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 <main>, argc=12, argv=0x7fffffffebd8) at src/env/__libc_start_main.c:95
#18 0x00005555556cd0d8 in _start ()
```"""
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