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vnc: qemu can die if the client is disconnected while updating screen 

agraf reported that qemu_mutex_destroy(vs->output_mutex) while failing
in vnc_disconnect_finish().

It's because vnc_worker_thread_loop() tries to unlock the mutex while
not locked. The unlocking call doesn't fail (pthread bug ?), but
the destroy call does.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Corentin Chary 2011-02-04 09:05:53 +01:00 committed by Anthony Liguori
parent 7185f9315b
commit 73eb4c04e9
1 changed files with 4 additions and 0 deletions
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4
ui/vnc-jobs-async.c
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@ -227,6 +227,10 @@ static int vnc_worker_thread_loop(VncJobQueue *queue)
if (job->vs->csock == -1) { if (job->vs->csock == -1) {
vnc_unlock_display(job->vs->vd); vnc_unlock_display(job->vs->vd);
/* output mutex must be locked before going to
* disconnected:
*/
vnc_lock_output(job->vs);
goto disconnected; goto disconnected;
} }