From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754155AbcIQUBi (ORCPT ); Sat, 17 Sep 2016 16:01:38 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:47007 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752356AbcIQUBh (ORCPT ); Sat, 17 Sep 2016 16:01:37 -0400 From: Guenter Roeck To: Jonas Bonn Cc: linux-kernel@vger.kernel.org, Guenter Roeck , Al Viro Subject: [PATCH] openrisc: fix the fix of copy_from_user() Date: Sat, 17 Sep 2016 13:01:32 -0700 Message-Id: <1474142492-3667-1-git-send-email-linux@roeck-us.net> X-Mailer: git-send-email 2.5.0 X-Authenticated_sender: guenter@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: authenticated_id: guenter@roeck-us.net X-Authenticated-Sender: bh-25.webhostbox.net: guenter@roeck-us.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since commit acb2505d0119 ("openrisc: fix copy_from_user()"), copy_from_user() returns the number of bytes requested, not the number of bytes not copied. Cc: Al Viro Fixes: acb2505d0119 ("openrisc: fix copy_from_user()") Signed-off-by: Guenter Roeck --- arch/openrisc/include/asm/uaccess.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h index cbad29b5a131..5cc6b4f1b795 100644 --- a/arch/openrisc/include/asm/uaccess.h +++ b/arch/openrisc/include/asm/uaccess.h @@ -276,7 +276,7 @@ copy_from_user(void *to, const void *from, unsigned long n) unsigned long res = n; if (likely(access_ok(VERIFY_READ, from, n))) - n = __copy_tofrom_user(to, from, n); + res = __copy_tofrom_user(to, from, n); if (unlikely(res)) memset(to + (n - res), 0, res); return res; -- 2.5.0