From ebae6477dc43cf32b91564e07a776d9bff3b052f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Date: Thu, 4 Feb 2021 14:52:31 +0400 Subject: [PATCH] chardev: check if the chardev is registered for yanking MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Not all chardevs are created via qmp_chardev_open_socket(), and those should not call the yank function registration, as this will eventually assert() not being registered. Signed-off-by: Marc-André Lureau Message-Id: <20210204105232.834642-20-marcandre.lureau@redhat.com> Signed-off-by: Gerd Hoffmann --- chardev/char-socket.c | 53 +++++++++++++++++++++++++++---------------- 1 file changed, 33 insertions(+), 20 deletions(-) diff --git a/chardev/char-socket.c b/chardev/char-socket.c index 8a707d766c..9061981f6d 100644 --- a/chardev/char-socket.c +++ b/chardev/char-socket.c @@ -417,8 +417,9 @@ static void tcp_chr_free_connection(Chardev *chr) tcp_set_msgfds(chr, NULL, 0); remove_fd_in_watch(chr); - if (s->state == TCP_CHARDEV_STATE_CONNECTING - || s->state == TCP_CHARDEV_STATE_CONNECTED) { + if (s->registered_yank && + (s->state == TCP_CHARDEV_STATE_CONNECTING + || s->state == TCP_CHARDEV_STATE_CONNECTED)) { yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label), yank_generic_iochannel, QIO_CHANNEL(s->sioc)); @@ -940,9 +941,11 @@ static int tcp_chr_add_client(Chardev *chr, int fd) } tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); tcp_chr_set_client_ioc_name(chr, sioc); - yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), - yank_generic_iochannel, - QIO_CHANNEL(sioc)); + if (s->registered_yank) { + yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), + yank_generic_iochannel, + QIO_CHANNEL(sioc)); + } ret = tcp_chr_new_client(chr, sioc); object_unref(OBJECT(sioc)); return ret; @@ -957,9 +960,11 @@ static void tcp_chr_accept(QIONetListener *listener, tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); tcp_chr_set_client_ioc_name(chr, cioc); - yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), - yank_generic_iochannel, - QIO_CHANNEL(cioc)); + if (s->registered_yank) { + yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), + yank_generic_iochannel, + QIO_CHANNEL(cioc)); + } tcp_chr_new_client(chr, cioc); } @@ -975,9 +980,11 @@ static int tcp_chr_connect_client_sync(Chardev *chr, Error **errp) object_unref(OBJECT(sioc)); return -1; } - yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), - yank_generic_iochannel, - QIO_CHANNEL(sioc)); + if (s->registered_yank) { + yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), + yank_generic_iochannel, + QIO_CHANNEL(sioc)); + } tcp_chr_new_client(chr, sioc); object_unref(OBJECT(sioc)); return 0; @@ -993,9 +1000,11 @@ static void tcp_chr_accept_server_sync(Chardev *chr) tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); sioc = qio_net_listener_wait_client(s->listener); tcp_chr_set_client_ioc_name(chr, sioc); - yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), - yank_generic_iochannel, - QIO_CHANNEL(sioc)); + if (s->registered_yank) { + yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), + yank_generic_iochannel, + QIO_CHANNEL(sioc)); + } tcp_chr_new_client(chr, sioc); object_unref(OBJECT(sioc)); } @@ -1124,9 +1133,11 @@ static void qemu_chr_socket_connected(QIOTask *task, void *opaque) if (qio_task_propagate_error(task, &err)) { tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); - yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label), - yank_generic_iochannel, - QIO_CHANNEL(sioc)); + if (s->registered_yank) { + yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label), + yank_generic_iochannel, + QIO_CHANNEL(sioc)); + } check_report_connect_error(chr, err); goto cleanup; } @@ -1160,9 +1171,11 @@ static void tcp_chr_connect_client_async(Chardev *chr) tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); sioc = qio_channel_socket_new(); tcp_chr_set_client_ioc_name(chr, sioc); - yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), - yank_generic_iochannel, - QIO_CHANNEL(sioc)); + if (s->registered_yank) { + yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), + yank_generic_iochannel, + QIO_CHANNEL(sioc)); + } /* * Normally code would use the qio_channel_socket_connect_async * method which uses a QIOTask + qio_task_set_error internally