From 0c5a08372faf7b587eb952ad697e7bd9d7480448 Mon Sep 17 00:00:00 2001 From: Mikko Perttunen Date: Wed, 20 Jun 2018 16:03:58 +0300 Subject: [PATCH] drm/tegra: Fix comparison operator for buffer size [ Upstream commit 5265f0338bc0feec6c0d544dfe005dec1a93cb93 ] Here we are checking for the buffer length, not an offset for writing to, so using > is correct. The current code incorrectly rejects a command buffer ending at the memory buffer's end. Signed-off-by: Mikko Perttunen Reviewed-by: Dmitry Osipenko Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/tegra/drm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 7afe2f635f741..500b7c5b66729 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -436,7 +436,7 @@ int tegra_drm_submit(struct tegra_drm_context *context, * unaligned offset is malformed and cause commands stream * corruption on the buffer address relocation. */ - if (offset & 3 || offset >= obj->gem.size) { + if (offset & 3 || offset > obj->gem.size) { err = -EINVAL; goto fail; } -- 2.47.2