From 0e132838e4f42f9aa8940a3105f940e1ed656d9b Mon Sep 17 00:00:00 2001
From: Suresh Siddha <suresh.b.siddha@intel.com>
Date: Wed, 13 Aug 2008 11:38:14 -0700
Subject: [PATCH] --- yaml --- r: 112786 b: refs/heads/master c:
 ed405958057ca6a8c4c9178a7a3b1167fabb45f5 h: refs/heads/master v: v3

---
 [refs]                        | 2 +-
 trunk/arch/x86/kernel/xsave.c | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index bc0642b68ffb..1221761f4e34 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ee2b92a8201a40021ecd1aee6f0625dc03bacc54
+refs/heads/master: ed405958057ca6a8c4c9178a7a3b1167fabb45f5
diff --git a/trunk/arch/x86/kernel/xsave.c b/trunk/arch/x86/kernel/xsave.c
index 7415f3e38a51..bb097b1644d8 100644
--- a/trunk/arch/x86/kernel/xsave.c
+++ b/trunk/arch/x86/kernel/xsave.c
@@ -92,6 +92,12 @@ int save_i387_xstate(void __user *buf)
 		return 0;
 	clear_used_math(); /* trigger finit */
 	if (task_thread_info(tsk)->status & TS_USEDFPU) {
+		/*
+	 	 * Start with clearing the user buffer. This will present a
+	 	 * clean context for the bytes not touched by the fxsave/xsave.
+		 */
+		__clear_user(buf, sig_xstate_size);
+
 		if (task_thread_info(tsk)->status & TS_XSAVE)
 			err = xsave_user(buf);
 		else