From c2ccc98ceb07c009d64b7ee801f8966194510021 Mon Sep 17 00:00:00 2001
From: Yoshiaki Tamura <tamura.yoshiaki@lab.ntt.co.jp>
Date: Fri, 20 Aug 2010 19:10:41 +0900
Subject: vnc: check fd before calling qemu_set_fd_handler2() in
 vnc_client_write()

Setting fd = -1 to qemu_set_fd_handler2() causes bus error at FD_SET
in main_loop_wait().

Signed-off-by: Yoshiaki Tamura <tamura.yoshiaki@lab.ntt.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
(cherry picked from commit ac71103dc6b408775ae72067790ab367912f75ec)
---
 ui/vnc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ui/vnc.c b/ui/vnc.c
index 7fc40acae8..c7a18311f0 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -1184,7 +1184,7 @@ void vnc_client_write(void *opaque)
     vnc_lock_output(vs);
     if (vs->output.offset) {
         vnc_client_write_locked(opaque);
-    } else {
+    } else if (vs->csock != -1) {
         qemu_set_fd_handler2(vs->csock, NULL, vnc_client_read, NULL, vs);
     }
     vnc_unlock_output(vs);
-- 
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