From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754251Ab1HHSnp (ORCPT ); Mon, 8 Aug 2011 14:43:45 -0400 Received: from mail.candelatech.com ([208.74.158.172]:44748 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754063Ab1HHSno (ORCPT ); Mon, 8 Aug 2011 14:43:44 -0400 Message-ID: <4E402E5F.5010600@candelatech.com> Date: Mon, 08 Aug 2011 11:43:43 -0700 From: Ben Greear Organization: Candela Technologies User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc13 Thunderbird/3.1.10 MIME-Version: 1.0 To: linux-kernel Subject: 3.0.1 compile error on Fedora 15 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [greearb@t60-ben linux-3.0.p4s]$ make make -C /home/greearb/git/linux-3.0.dev.y O=/home/greearb/kernel/2.6/linux-3.0.p4s/. Using /home/greearb/git/linux-3.0.dev.y as source for kernel GEN /home/greearb/kernel/2.6/linux-3.0.p4s/Makefile CHK include/linux/version.h CHK include/generated/utsrelease.h CALL /home/greearb/git/linux-3.0.dev.y/scripts/checksyscalls.sh CHK include/generated/compile.h CC fs/binfmt_misc.o In file included from /home/greearb/git/linux-3.0.dev.y/arch/x86/include/asm/uaccess.h:570:0, from /home/greearb/git/linux-3.0.dev.y/include/linux/uaccess.h:5, from /home/greearb/git/linux-3.0.dev.y/include/linux/highmem.h:7, from /home/greearb/git/linux-3.0.dev.y/include/linux/pagemap.h:10, from /home/greearb/git/linux-3.0.dev.y/fs/binfmt_misc.c:26: /home/greearb/git/linux-3.0.dev.y/arch/x86/include/asm/uaccess_32.h: In function ‘parse_command.part.0’: /home/greearb/git/linux-3.0.dev.y/arch/x86/include/asm/uaccess_32.h:211:26: error: call to ‘copy_from_user_overflow’ declared with attribute error: copy_from_user() buffer size is not provably correct make[3]: *** [fs/binfmt_misc.o] Error 1 make[2]: *** [fs] Error 2 make[1]: *** [sub-make] Error 2 make: *** [all] Error 2 [greearb@t60-ben linux-3.0.p4s]$ The code in question is below. Is this missing an assignment to n in the else branch? static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n) { int sz = __compiletime_object_size(to); if (likely(sz == -1 || sz >= n)) n = _copy_from_user(to, from, n); else copy_from_user_overflow(); return n; } -- Ben Greear Candela Technologies Inc http://www.candelatech.com