The patch titled
vga16fb: test virtual screen range before subtraction on unsigned
has been added to the -mm tree. Its filename is
vga16fb-test-virtual-screen-range-before-subtraction-on-unsigned.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: vga16fb: test virtual screen range before subtraction on unsigned
From: Roel Kluin <12o3l@xxxxxxxxxx>
dx and dy are u32's, so the test should occur before the subtraction
Signed-off-by: Roel Kluin <12o3l@xxxxxxxxxx>
Cc: Antonino Daplas <adaplas@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/vga16fb.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff -puN drivers/video/vga16fb.c~vga16fb-test-virtual-screen-range-before-subtraction-on-unsigned drivers/video/vga16fb.c
--- a/drivers/video/vga16fb.c~vga16fb-test-virtual-screen-range-before-subtraction-on-unsigned
+++ a/drivers/video/vga16fb.c
@@ -1087,12 +1087,15 @@ static void vga16fb_copyarea(struct fb_i
width = x2 - dx;
height = y2 - dy;
+ if (sx + dx < old_dx || sy + dy < old_dy)
+ return;
+
/* update sx1,sy1 */
sx += (dx - old_dx);
sy += (dy - old_dy);
/* the source must be completely inside the virtual screen */
- if (sx < 0 || sy < 0 || (sx + width) > vxres || (sy + height) > vyres)
+ if (sx + width > vxres || sy + height > vyres)
return;
switch (info->fix.type) {
_
Patches currently in -mm which might be from 12o3l@xxxxxxxxxx are
atmel_lcdfb-fix-pixclok-divider-calculation.patch
linux-next.patch
ehca-ret-is-unsigned-ibmebus_request_irq-negative-return-ignored-in-hca_create_eq.patch
block-blk-mergec-inverted-likeliness-in-ll_back_merge_fn.patch
spi_mpc83xx-much-improved-driver.patch
xilinx_spi-test-below-0-on-unsigned-irq-in-xilinx_spi_probe.patch
asic3-platform_get_irq-may-return-signed-unnoticed.patch
aty128fb-test-below-0-on-unsigned-pll-post_divider.patch
amifb-test-virtual-screen-range-before-subtraction-on-unsigned.patch
atafb-test-virtual-screen-range-before-subtraction-on-unsigned.patch
vga16fb-test-virtual-screen-range-before-subtraction-on-unsigned.patch
likeliness-accounting-change-and-cleanup.patch
likely_prof-update-to-test_and_set_bit_lock-clear_bit_unlock.patch
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