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 @@
+Fix the mouse shadow in qemu
+
+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.
+
+This 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.
+
+Signed-off-by: Yu Ke <ke.yu@intel.com>
+
+diff --git a/sdl.c b/sdl.c
+index 7912c91..2f33cd2 100644
+--- a/sdl.c
++++ b/sdl.c
+@@ -775,12 +775,12 @@ static void sdl_mouse_define(int width, int height, int bpp,
+                              int hot_x, int hot_y,
+                              uint8_t *image, uint8_t *mask)
+ {
+-    uint8_t sprite[256], *line;
++    uint8_t *sprite, *line;
+     int x, y, dst, bypl, src = 0;
+     if (guest_sprite)
+         SDL_FreeCursor(guest_sprite);
+ 
+-    memset(sprite, 0, 256);
++    sprite = (uint8_t*)qemu_mallocz(width * height);
+     bypl = ((width * bpp + 31) >> 5) << 2;
+     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
+         line = image;
+@@ -818,6 +818,7 @@ static void sdl_mouse_define(int width, int height, int bpp,
+     if (guest_cursor &&
+             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
+         SDL_SetCursor(guest_sprite);
++       qemu_free(sprite);
+ }
+ 
+ static void sdl_cleanup(void)