From cc39a92cbfc80c70d2b83708a4c9b309c3126ac3 Mon Sep 17 00:00:00 2001 From: Chris Webb Date: Mon, 8 Mar 2010 14:34:49 +0000 Subject: Fix SIGFPE for vnc display of width/height = 1 During boot, the screen gets resized to height 1 and a mouse click at this point will cause a division by zero when calculating the absolute pointer position from the pixel (x, y). Return a click in the middle of the screen instead in this case. Signed-off-by: Chris Webb Signed-off-by: Anthony Liguori --- vnc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'vnc.c') diff --git a/vnc.c b/vnc.c index f10a37f74..5eb44fc57 100644 --- a/vnc.c +++ b/vnc.c @@ -1457,8 +1457,10 @@ static void pointer_event(VncState *vs, int button_mask, int x, int y) dz = 1; if (vs->absolute) { - kbd_mouse_event(x * 0x7FFF / (ds_get_width(vs->ds) - 1), - y * 0x7FFF / (ds_get_height(vs->ds) - 1), + kbd_mouse_event(ds_get_width(vs->ds) > 1 ? + x * 0x7FFF / (ds_get_width(vs->ds) - 1) : 0x4000, + ds_get_height(vs->ds) > 1 ? + y * 0x7FFF / (ds_get_height(vs->ds) - 1) : 0x4000, dz, buttons); } else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) { x -= 0x7FFF; -- cgit v1.2.3