summaryrefslogtreecommitdiffstats
path: root/meta/recipes-devtools/qemu/qemu-0.12.4
diff options
context:
space:
mode:
authorYu Ke <ke.yu@intel.com>2010-09-15 14:42:05 +0800
committerSaul Wold <Saul.Wold@intel.com>2010-09-27 08:59:16 -0700
commit7531480bbb558db46e1d973f5a638fb957a25ffa (patch)
tree2ecce210f2a6afe0aefcd9cbdc3927ad0625dd42 /meta/recipes-devtools/qemu/qemu-0.12.4
parent59646974abd58812f3b37e62224bd41e71bedfbc (diff)
downloadpoky-7531480bbb558db46e1d973f5a638fb957a25ffa.tar.gz
QEMU: Fix the mouse shadow issue (bug 170)
the root cause is that the qemu cursor array is hardcoded to 256 bytes, while the sato use cursor of the size 64*64=4096, thus lead buffer overflow and abnormal mouse. A qemu patch is introduced to dynamically allocate qemu cursor array to fix this issue. BTW, qemu upstream already redesign the cursor interface and implementation, and this issue does not occur in upstream, so no need to push this patch to upstream. and when upgrade the qemu, this patch can be safely removed. Fix [BUGID #170] Signed-off-by: Yu Ke <ke.yu@intel.com>
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu-0.12.4')
-rw-r--r--meta/recipes-devtools/qemu/qemu-0.12.4/cursor-shadow-fix.patch35
1 files changed, 35 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu-0.12.4/cursor-shadow-fix.patch b/meta/recipes-devtools/qemu/qemu-0.12.4/cursor-shadow-fix.patch
new file mode 100644
index 0000000000..6600c4303f
--- /dev/null
+++ b/meta/recipes-devtools/qemu/qemu-0.12.4/cursor-shadow-fix.patch
@@ -0,0 +1,35 @@
1Fix the mouse shadow in qemu
2
3the root cause is that the qemu cursor array is hardcoded to 256 bytes, while the sato use cursor of the size 64*64=4096, thus lead buffer overflow and abnormal mouse.
4
5This issue has been fixed in upstream starting from v0.13.0-rc0. v0.12.5 still has this issue. So when qemu is upgraded to 0.13.0 or above, this patch can be safely removed.
6
7Signed-off-by: Yu Ke <ke.yu@intel.com>
8
9diff --git a/sdl.c b/sdl.c
10index 7912c91..2f33cd2 100644
11--- a/sdl.c
12+++ b/sdl.c
13@@ -775,12 +775,12 @@ static void sdl_mouse_define(int width, int height, int bpp,
14 int hot_x, int hot_y,
15 uint8_t *image, uint8_t *mask)
16 {
17- uint8_t sprite[256], *line;
18+ uint8_t *sprite, *line;
19 int x, y, dst, bypl, src = 0;
20 if (guest_sprite)
21 SDL_FreeCursor(guest_sprite);
22
23- memset(sprite, 0, 256);
24+ sprite = (uint8_t*)qemu_mallocz(width * height);
25 bypl = ((width * bpp + 31) >> 5) << 2;
26 for (y = 0, dst = 0; y < height; y ++, image += bypl) {
27 line = image;
28@@ -818,6 +818,7 @@ static void sdl_mouse_define(int width, int height, int bpp,
29 if (guest_cursor &&
30 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
31 SDL_SetCursor(guest_sprite);
32+ qemu_free(sprite);
33 }
34
35 static void sdl_cleanup(void)