From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753968AbdBEUZq (ORCPT + 2 others); Sun, 5 Feb 2017 15:25:46 -0500 Received: from wtarreau.pck.nerim.net ([62.212.114.60]:27516 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752907AbdBETXC (ORCPT ); Sun, 5 Feb 2017 14:23:02 -0500 From: Willy Tarreau To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, linux@roeck-us.net Cc: Al Viro , Willy Tarreau Subject: [PATCH 3.10 078/319] sh64: failing __get_user() should zero Date: Sun, 5 Feb 2017 20:21:05 +0100 Message-Id: <1486322486-8024-49-git-send-email-w@1wt.eu> X-Mailer: git-send-email 2.8.0.rc2.1.gbe9624a In-Reply-To: <1486322486-8024-1-git-send-email-w@1wt.eu> References: <1486322486-8024-1-git-send-email-w@1wt.eu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: From: Al Viro commit c6852389228df9fb3067f94f3b651de2a7921b36 upstream. It could be done in exception-handling bits in __get_user_b() et.al., but the surgery involved would take more knowledge of sh64 details than I have or _want_ to have. Signed-off-by: Al Viro Signed-off-by: Willy Tarreau --- arch/sh/include/asm/uaccess_64.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/sh/include/asm/uaccess_64.h b/arch/sh/include/asm/uaccess_64.h index 2e07e0f..a2f9d05 100644 --- a/arch/sh/include/asm/uaccess_64.h +++ b/arch/sh/include/asm/uaccess_64.h @@ -24,6 +24,7 @@ #define __get_user_size(x,ptr,size,retval) \ do { \ retval = 0; \ + x = 0; \ switch (size) { \ case 1: \ retval = __get_user_asm_b((void *)&x, \ -- 2.8.0.rc2.1.gbe9624a