File 0135-drm-etnaviv-Fix-off-by-one-error-in-reloc-... of Package drm

Overview Repositories Revisions Requests Users Attributes Meta

File 0135-drm-etnaviv-Fix-off-by-one-error-in-reloc-checking.patch of Package drm

From 4381e2c30008fa5ceb28957cb186a25871b09bf1 Mon Sep 17 00:00:00 2001
From: "Wladimir J. van der Laan" <laanwj@gmail.com>
Date: Tue, 25 Jul 2017 14:33:36 +0200
Subject: [PATCH] drm/etnaviv: Fix off-by-one error in reloc checking
Git-commit: d6f756e09f01ea7a0efbbcef269a1e384a35d824
Patch-mainline: 4.13-rc5
References: bsc#1041744

commit d6f756e09f01ea7a0efbbcef269a1e384a35d824 upstream.

A relocation pointing to the last four bytes of a buffer can
legitimately happen in the case of small vertex buffers.

Signed-off-by: Wladimir J. van der Laan <laanwj@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -264,8 +264,8 @@ static int submit_reloc(struct etnaviv_g
 		if (ret)
 			return ret;
 
-		if (r->reloc_offset >= bo->obj->base.size - sizeof(*ptr)) {
-			DRM_ERROR("relocation %u outside object", i);
+		if (r->reloc_offset > bo->obj->base.size - sizeof(*ptr)) {
+			DRM_ERROR("relocation %u outside object\n", i);
 			return -EINVAL;
 		}

Places

File 0135-drm-etnaviv-Fix-off-by-one-error-in-reloc-checking.patch of Package drm

Places