From 2c5eba85740e6a7ced8ada0ee45fdd74e4bca364 Mon Sep 17 00:00:00 2001 From: Adam Jackson Date: Wed, 4 Jan 2017 10:30:08 -0500 Subject: [PATCH] Fix shadow fb allocation size (v2) ->bitsPerPixel is rather obviously eight times too large. v2: Use ->displayWidth - the pitch - not ->virtualX (Keith Packard) Signed-off-by: Adam Jackson Reviewed-by: Alex Deucher --- src/fbdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/fbdev.c b/src/fbdev.c index 2c658fe..4309d76 100644 --- a/src/fbdev.c +++ b/src/fbdev.c @@ -827,8 +827,8 @@ FBDevScreenInit(SCREEN_INIT_ARGS_DECL) fPtr->fbstart = fPtr->fbmem + fPtr->fboff; if (fPtr->shadowFB) { - fPtr->shadow = calloc(1, pScrn->virtualX * pScrn->virtualY * - pScrn->bitsPerPixel); + fPtr->shadow = calloc(1, pScrn->displayWidth * pScrn->virtualY * + ((pScrn->bitsPerPixel + 7) / 8)); if (!fPtr->shadow) { xf86DrvMsg(pScrn->scrnIndex, X_ERROR,