OpenE2K
/
qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

vnc: fix possible uninitialized removals 

Some VncState values are not initialized before the Websocket handshake.
If it fails QEMU segfaults during the cleanup. To prevent this behavior
intialization checks are added.

Signed-off-by: Tim Hardeck <thardeck@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Tim Hardeck 2013-01-21 11:04:45 +01:00 committed by Anthony Liguori
parent 7536ee4bc3
commit 6fd8e79af0
2 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
ui/vnc.c
View File

@ -1053,20 +1053,24 @@ void vnc_disconnect_finish(VncState *vs)
audio_del(vs);
vnc_release_modifiers(vs);
QTAILQ_REMOVE(&vs->vd->clients, vs, next);
if (vs->initialized) {
QTAILQ_REMOVE(&vs->vd->clients, vs, next);
qemu_remove_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
}
if (QTAILQ_EMPTY(&vs->vd->clients)) {
dcl->idle = 1;
}
qemu_remove_mouse_mode_change_notifier(&vs->mouse_mode_notifier);
vnc_remove_timer(vs->vd);
if (vs->vd->lock_key_sync)
qemu_remove_led_event_handler(vs->led);
vnc_unlock_output(vs);
qemu_mutex_destroy(&vs->output_mutex);
qemu_bh_delete(vs->bh);
if (vs->bh != NULL) {
qemu_bh_delete(vs->bh);
}
buffer_free(&vs->jobs_buffer);
for (i = 0; i < VNC_STAT_ROWS; ++i) {
@ -2749,6 +2753,7 @@ static void vnc_connect(VncDisplay *vd, int csock, int skipauth, bool websocket)
void vnc_init_state(VncState *vs)
{
vs->initialized = true;
VncDisplay *vd = vs->vd;
vs->ds = vd->ds;

1
ui/vnc.h
View File

@ -306,6 +306,7 @@ struct VncState
QEMUPutLEDEntry *led;
bool abort;
bool initialized;
QemuMutex output_mutex;
QEMUBH *bh;
Buffer jobs_buffer;