From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49953) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d82hM-000085-FE for qemu-devel@nongnu.org; Tue, 09 May 2017 06:48:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d82hI-0001YU-Iz for qemu-devel@nongnu.org; Tue, 09 May 2017 06:48:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45814) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d82hI-0001Vc-Ct for qemu-devel@nongnu.org; Tue, 09 May 2017 06:48:52 -0400 From: Gerd Hoffmann Date: Tue, 9 May 2017 12:48:39 +0200 Message-Id: <20170509104839.19415-1-kraxel@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH] vga: fix display update region calculation List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, liqiang6-s@360.cn, Gerd Hoffmann vga display update mis-calculated the region for the dirty bitmap snapshot in case the scanlines are padded. This can triggere an assert in cpu_physical_memory_snapshot_get_dirty(). Fixes: fec5e8c92becad223df9d972770522f64aafdb72 Reported-by: Kevin Wolf Reported-by: =E6=9D=8E=E5=BC=BA Signed-off-by: Gerd Hoffmann --- hw/display/vga.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/display/vga.c b/hw/display/vga.c index b2516c8d21..dcc95f88e2 100644 --- a/hw/display/vga.c +++ b/hw/display/vga.c @@ -1630,7 +1630,7 @@ static void vga_draw_graphic(VGACommonState *s, int= full_update) if (!full_update) { vga_sync_dirty_bitmap(s); snap =3D memory_region_snapshot_and_clear_dirty(&s->vram, addr1, - bwidth * height, + line_offset * heig= ht, DIRTY_MEMORY_VGA); } =20 --=20 2.9.3