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| author | BALATON Zoltan <balaton@eik.bme.hu> | 2020-06-20 22:56:28 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2020-06-30 22:46:28 +0200 |
| commit | 84ec3f940289dfba9b6de531c9aac7f089fc6c8f (patch) | |
| tree | f2cf0ea1dcdc16dcbb76b5d2e31693e7dd5453cb /hw/display/sm501.c | |
| parent | fc1bff958998910ec8d25db86cd2f53ff125f7ab (diff) | |
| download | qemu-84ec3f940289dfba9b6de531c9aac7f089fc6c8f.zip qemu-84ec3f940289dfba9b6de531c9aac7f089fc6c8f.tar.gz qemu-84ec3f940289dfba9b6de531c9aac7f089fc6c8f.tar.bz2 | |
sm501: Fix bounds checks
We don't need to add width to pitch when calculating last point, that
would reject valid ops within the card's local_mem.
Fixes: b15a22bbcbe6a78dc3d88fe3134985e4cdd87de4
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: ddb5781d12913bb9d6dbfd9e5b1e2b893e2b3e2d.1592686588.git.balaton@eik.bme.hu
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/display/sm501.c')
| -rw-r--r-- | hw/display/sm501.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/hw/display/sm501.c b/hw/display/sm501.c index a7fc08c..5ceee41 100644 --- a/hw/display/sm501.c +++ b/hw/display/sm501.c @@ -723,8 +723,8 @@ static void sm501_2d_operation(SM501State *s) dst_y -= height - 1; } - if (dst_base >= get_local_mem_size(s) || dst_base + - (dst_x + width + (dst_y + height) * (dst_pitch + width)) * + if (dst_base >= get_local_mem_size(s) || + dst_base + (dst_x + width + (dst_y + height) * dst_pitch) * (1 << format) >= get_local_mem_size(s)) { qemu_log_mask(LOG_GUEST_ERROR, "sm501: 2D op dest is outside vram.\n"); return; @@ -749,8 +749,8 @@ static void sm501_2d_operation(SM501State *s) src_y -= height - 1; } - if (src_base >= get_local_mem_size(s) || src_base + - (src_x + width + (src_y + height) * (src_pitch + width)) * + if (src_base >= get_local_mem_size(s) || + src_base + (src_x + width + (src_y + height) * src_pitch) * (1 << format) >= get_local_mem_size(s)) { qemu_log_mask(LOG_GUEST_ERROR, "sm501: 2D op src is outside vram.\n"); |