From 3b8e6ccd2573a027aa30c10d08253de1756540c2 Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
Date: Tue, 19 Dec 2006 23:45:59 +0100
Subject: Security fix. Zero pages before they are handed to user space.

TTM pages were not cleared when allocated and handed to user space.
Sensitive information may leak.
---
 linux-core/drm_compat.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'linux-core/drm_compat.c')

diff --git a/linux-core/drm_compat.c b/linux-core/drm_compat.c
index b466f8bd..cde77ea7 100644
--- a/linux-core/drm_compat.c
+++ b/linux-core/drm_compat.c
@@ -259,6 +259,8 @@ struct page *drm_vm_ttm_nopage(struct vm_area_struct *vma,
 		}
 		++bm->cur_pages;
 		SetPageLocked(page);
+		clear_page(kmap(page));
+		kunmap(page);
 	}
 
 	get_page(page);
-- 
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