Hi Dan, I've got a crash in head (and 2.10) which is a bit of a heisenbug; I can trigger it with:
./qemu-system-x86_64 -netdev tap,id=hostnet0,vhost=on,fd=10 -chardev socket,id=charchannel0,path=/tmp/org.qemu.guest_agent.0,server,nowait -monitor stdio -vnc :0 and then 'q' to quit. Note I'm not doing a redirect in of fd 10. It goes away if I remove either the -netdev or the -chardev option. It doesn't trigger under gdb, but fortunately we get a core: #0 0x000055a226d94a2e in socket_listen_cleanup (fd=<optimized out>, errp=errp@entry=0x7fff3585e8c0) at /root/qemu/util/qemu-sockets.c:1077 1077 if (addr->type == SOCKET_ADDRESS_TYPE_UNIX 1078 && addr->u.q_unix.path) { 1079 if (unlink(addr->u.q_unix.path) < 0 && errno != ENOENT) { #1 0x000055a226d4242b in qio_channel_socket_finalize (obj=<optimized out>) at /root/qemu/io/channel-socket.c:388 #2 0x000055a226cbca92 in object_unref (type=<optimized out>, obj=0x55a2290ab400) at /root/qemu/qom/object.c:462 #3 0x000055a226cbca92 in object_unref (data=0x55a2290ab400) at /root/qemu/qom/object.c:476 #4 0x000055a226cbca92 in object_unref (obj=0x55a2290ab400) at /root/qemu/qom/object.c:911 #5 0x000055a226d334c9 in char_socket_finalize (obj=<optimized out>) at /root/qemu/chardev/char-socket.c:805 #6 0x000055a226cbca92 in object_unref (type=<optimized out>, obj=0x55a2290aa7f0) at /root/qemu/qom/object.c:462 #7 0x000055a226cbca92 in object_unref (data=0x55a2290aa7f0) at /root/qemu/qom/object.c:476 #8 0x000055a226cbca92 in object_unref (obj=0x55a2290aa7f0) at /root/qemu/qom/object.c:911 #9 0x000055a226cbcacc in object_unref (obj=0x55a2290ab7a0) at /root/qemu/qom/object.c:413 #10 0x000055a226cbcacc in object_unref (data=0x55a2290ab7a0) at /root/qemu/qom/object.c:475 #11 0x000055a226cbcacc in object_unref (obj=0x55a2290ab7a0) at /root/qemu/qom/object.c:911 #12 0x000055a226cbba87 in object_property_del_child (obj=0x55a22909e770, child=0x55a2290ab7a0, errp=0x0) at /root/qemu/qom/object.c:436 #13 0x000055a226cbc2e4 in object_unparent (obj=<optimized out>) at /root/qemu/qom/object.c:455 #14 0x000055a226d2e7e5 in qemu_chr_cleanup () at /root/qemu/chardev/char.c:1090 #15 0x000055a2269c73ff in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at /root/qemu/vl.c:4914 Dave -- Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK