qemu/0155-qxl-dont-update-invalid-area.patch
2012-10-28 14:05:07 -04:00

45 lines
1.7 KiB
Diff

From 4007ba909e0188ed03d5a1fc1dde094d0ac14488 Mon Sep 17 00:00:00 2001
From: Dunrong Huang <riegamaths@gmail.com>
Date: Fri, 31 Aug 2012 00:44:44 +0800
Subject: [PATCH] qxl: dont update invalid area
This patch fixes the following error:
$ ~/usr/bin/qemu-system-x86_64 -enable-kvm -m 1024 -spice port=5900,disable-ticketing -vga qxl -cdrom ~/Images/linuxmint-13-mate-dvd-32bit.iso
(/home/mathslinux/usr/bin/qemu-system-x86_64:10068): SpiceWorker-CRITICAL **: red_worker.c:4599:red_update_area: condition `area->left >= 0 && area->top >= 0 && area->left < area->right && area->top < area->bottom' failed
Aborted
spice server terminates QEMU process if we pass invalid area to it,
so dont update those invalid areas.
Signed-off-by: Dunrong Huang <riegamaths@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit ccc2960d654a233a6ed415b37d8ff41728d817c5)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
hw/qxl.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/qxl.c b/hw/qxl.c
index 27f3779..038a8bb 100644
--- a/hw/qxl.c
+++ b/hw/qxl.c
@@ -1448,6 +1448,13 @@ async_common:
return;
}
+ if (update.left < 0 || update.top < 0 || update.left >= update.right ||
+ update.top >= update.bottom) {
+ qxl_set_guest_bug(d, "QXL_IO_UPDATE_AREA: "
+ "invalid area(%d,%d,%d,%d)\n", update.left,
+ update.right, update.top, update.bottom);
+ break;
+ }
if (async == QXL_ASYNC) {
cookie = qxl_cookie_new(QXL_COOKIE_TYPE_IO,
QXL_IO_UPDATE_AREA_ASYNC);
--
1.7.12.1