riscv/qemu: QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org - qemu

QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org

emulation kvm qemu virtualization

History

Jie Song e714f1a3d4 monitor/qmp: cleanup SocketChardev listener sources early to avoid fd handling race When starting a dummy QEMU process with virsh version, monitor_init_qmp() enables IOThread monitoring of the QMP fd by default. However, a race condition exists during the initialization phase: the IOThread only removes the main thread's fd watch when it reaches qio_net_listener_set_client_func_full(), which may be delayed under high system load. This creates a window between monitor_qmp_setup_handlers_bh() and qio_net_listener_set_client_func_full() where both the main thread and IOThread are simultaneously monitoring the same fd and processing events. This race can cause either the main thread or the IOThread to hang and become unresponsive. Fix this by proactively cleaning up the listener's IO sources in monitor_init_qmp() before the IOThread initializes QMP monitoring, ensuring exclusive fd ownership and eliminating the race condition. Signed-off-by: Jie Song <songjie_yewu@cmss.chinamobile.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-ID: <20251125140706.114197-1-mail@jiesong.me>		4 months ago
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baum.c	include: move hw/usb.h to hw/usb/	3 months ago
char-console.c	qom: Have class_init() take a const data argument	11 months ago
char-fd.c	chardev: qemu_chr_open_fd(): add errp	6 months ago
char-fe.c	char: rename CharBackend->CharFrontend	5 months ago
char-file.c	chardev/char-file: fix failure path	4 months ago
char-hmp-cmds.c	qapi: Move include/qapi/qmp/ to include/qobject/	1 year ago
char-hub.c	char: rename CharBackend->CharFrontend	5 months ago
char-io.c	monitor/qmp: cleanup SocketChardev listener sources early to avoid fd handling race	3 months ago
char-mux.c	char: rename CharBackend->CharFrontend	5 months ago
char-null.c	qom: Have class_init() take a const data argument	11 months ago
char-parallel.c	qom: Have class_init() take a const data argument	11 months ago
char-pipe.c	chardev: qemu_chr_open_fd(): add errp	6 months ago
char-pty.c	chardev/char-pty: Do not ignore chr_write() failures	4 months ago
char-ringbuf.c	qom: Have class_init() take a const data argument	11 months ago
char-serial.c	chardev: close an fd on failure path	6 months ago
char-socket.c	monitor/qmp: cleanup SocketChardev listener sources early to avoid fd handling race	3 months ago
char-stdio.c	chardev: qemu_chr_open_fd(): add errp	6 months ago
char-udp.c	qom: Have class_init() take a const data argument	11 months ago
char-win-stdio.c	qom: Have class_init() take a const data argument	11 months ago
char-win.c	qom: Have class_init() take a const data argument	11 months ago
char.c	trivial patches for 2025-10-29	5 months ago
chardev-internal.h	char: rename CharBackend->CharFrontend	5 months ago
meson.build	chardev/char-hub: implement backend chardev aggregator	1 year ago
msmouse.c	qom: Have class_init() take a const data argument	11 months ago
spice.c	qom: Have class_init() take a const data argument	11 months ago
testdev.c	qom: Have class_init() take a const data argument	11 months ago
trace-events	chardev: add tracing of socket error conditions	2 years ago
trace.h	trace: switch position of headers to what Meson requires	6 years ago
wctablet.c	qom: Have class_init() take a const data argument	11 months ago