Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754866AbdCJBXS (ORCPT ); Thu, 9 Mar 2017 20:23:18 -0500 Received: from shards.monkeyblade.net ([184.105.139.130]:47386 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754468AbdCJBXQ (ORCPT ); Thu, 9 Mar 2017 20:23:16 -0500 Date: Thu, 09 Mar 2017 17:21:53 -0800 (PST) Message-Id: <20170309.172153.1200371456941480294.davem@davemloft.net> To: glider@google.com Cc: dvyukov@google.com, kcc@google.com, edumazet@google.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH v2] net: initialize msg.msg_flags in recvfrom From: David Miller In-Reply-To: <20170308170816.8533-1-glider@google.com> References: <20170308170816.8533-1-glider@google.com> X-Mailer: Mew version 6.7 on Emacs 25.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Thu, 09 Mar 2017 17:21:57 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 501 Lines: 14 From: Alexander Potapenko Date: Wed, 8 Mar 2017 18:08:16 +0100 > KMSAN reports a use of uninitialized memory in put_cmsg() because > msg.msg_flags in recvfrom haven't been initialized properly. > The flag values don't affect the result on this path, but it's still a > good idea to initialize them explicitly. > > Signed-off-by: Alexander Potapenko > --- > Changes since v1: > - removed KMSAN report and reproducer from the description Applied, thank you.