From mboxrd@z Thu Jan 1 00:00:00 1970 From: wwguy Subject: Re: [PATCH 1/9] iwlegacy: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning Date: Thu, 12 May 2011 17:01:42 -0700 Message-ID: <1305244903.3589.0.camel@wwguy-ubuntu> References: <1305244212-19183-1-git-send-email-sboyd@codeaurora.org> <1305244212-19183-2-git-send-email-sboyd@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: "John W. Linville" , "linux-kernel@vger.kernel.org" , "linux-wireless@vger.kernel.org" , "netdev@vger.kernel.org" , "Berg, Johannes" To: Stephen Boyd , Stanislaw Gruszka Return-path: Received: from mga02.intel.com ([134.134.136.20]:16377 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759014Ab1EMAFA (ORCPT ); Thu, 12 May 2011 20:05:00 -0400 In-Reply-To: <1305244212-19183-2-git-send-email-sboyd@codeaurora.org> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, 2011-05-12 at 16:50 -0700, Stephen Boyd wrote: > Enabling DEBUG_STRICT_USER_COPY_CHECKS causes the following > warning: > > In file included from arch/x86/include/asm/uaccess.h:573, > from include/net/checksum.h:25, > from include/linux/skbuff.h:28, > from drivers/net/wireless/iwlegacy/iwl-4965-rs.c:28: > In function 'copy_from_user', > inlined from 'iwl4965_rs_sta_dbgfs_scale_table_write' at > drivers/net/wireless/iwlegacy/iwl-4965-rs.c:2616: > arch/x86/include/asm/uaccess_64.h:65: > warning: call to 'copy_from_user_overflow' declared with > attribute warning: copy_from_user() buffer size is not provably > correct > > presumably due to buf_size being signed causing GCC to fail to > see that buf_size can't become negative. > > Cc: Johannes Berg > Signed-off-by: Stephen Boyd > --- > drivers/net/wireless/iwlegacy/iwl-4965-rs.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > Stanislaw Gruszka is the maintainer for iwlegacy Thanks Wey