From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753116AbcGMPD4 (ORCPT ); Wed, 13 Jul 2016 11:03:56 -0400 Received: from mout.kundenserver.de ([212.227.126.135]:50899 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751346AbcGMPDs (ORCPT ); Wed, 13 Jul 2016 11:03:48 -0400 From: Arnd Bergmann To: Dan Carpenter Cc: Greg Kroah-Hartman , linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: Re: [patch] dsp56k: prevent a harmless underflow Date: Wed, 13 Jul 2016 17:01:35 +0200 Message-ID: <4560698.1o7vFVpiPH@wuerfel> User-Agent: KMail/5.1.3 (Linux/4.4.0-28-generic; KDE/5.18.0; x86_64; ; ) In-Reply-To: <20160713101119.GF29468@mwanda> References: <20160713101119.GF29468@mwanda> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Provags-ID: V03:K0:rHLb6fLuWjCb2T6MEGn0B8oN6aUhH6Zb29SmYTsTp8Xxru+btKj M9GymJwslTlNbtrDFDVYjjh7Tf8Xkq25RQMKtoVKkPpJFm2qLL6RLiYVoFrgq38C5soaIZw qh3gvTzLm19XCEhoEI5ihL+DSDzgjnlFtHnwvG1XW8uyltBDm1OOKFBuiALEOUXUzgo6lDL xb4SmRM+mJnuFPBjwk6Kw== X-UI-Out-Filterresults: notjunk:1;V01:K0:U8Ge9D6qarw=:e6VtlZivm80rdW5b3rf7xa i6MxckcgjXnqTYyeBeCL6RPTw/F7NUOfLGfSz/BiFPL74ZVoDUq6E330ZSeAypCSpyj91NbBu tsPkR3cma351owdT9SSN/cK5VWUIs554BFHEr4H4imkq50KulL0Ng72EqsELThgmTsDzZiYa7 ru+OzaB1WAYGyR2ix59y4h8FdXVoGm7mwUqKKkijm9PSQv3GB5zElROEltcqVEDjkZoMtXJHZ F7TJC2uLiCHtCAwIq1xY4O2miGn8YPpMQtyQSdW1q/xxv9hlP8gQo0kBVRDVxtChCs7NDyLWj 6vU/YlGVfiSSt34Bt515z35VyI49EByrbf5AQ3CUDhtZP/P5JiEbv7LA9IDZyJBCbveLW+51e Zl2qABHoujdEeEuwq2Obthtwqd7lr6EW8kqJ5RNYJMNfBhrI0fJmGf6f3jnGA70WvYMrFCRsX CKwmUosEbcVAamuiajhTFqSBonLL807NwAQMdV1xwrfp5MtWbgMSJ1iAsm8SOauOO8Q5o1OnH Y8tbfcPCmRq1vlONEpVW2Uz+53nGNlrx3JIcXxKCcp6gzn7S0TcZ/C0aMtadDAQdjx/hqqSte qExwms0Rsx5t+ouyKSpqVfZ5rfEicAekaZDiFTYF5QnGN4w+rXoDQps4vo/XZZqBUdU2SOsCZ bPF01PsDAniW1giR5BxZrCbUrXpgazAQrBmVwy6a31aEpx/5YcaOb/iYOqmFcLvjU2Mp80WOJ dxX14lV1/3Iumv85 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday, July 13, 2016 1:11:19 PM CEST Dan Carpenter wrote: > There is a mistake here where we don't allow "len" to be zero but we > allow negative lengths. It's basically harmless in this case, but the > underflow makes my static checker complain. > > Signed-off-by: Dan Carpenter > Reviewed-by: Arnd Bergmann