From mboxrd@z Thu Jan 1 00:00:00 1970 From: Al Viro Date: Wed, 06 Jan 2016 13:26:13 +0000 Subject: Re: [patch] mtip32xx: calling kfree() on an error pointer Message-Id: <20160106132613.GT9938@ZenIV.linux.org.uk> List-Id: References: <20160106100503.GH23185@mwanda> <20160106130800.GS9938@ZenIV.linux.org.uk> <20160106131650.GH23363@mwanda> In-Reply-To: <20160106131650.GH23363@mwanda> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Dan Carpenter Cc: Jens Axboe , Asai Thambi SP , Selvan Mani , Jeff Moyer , Michal Hocko , Rasmus Villemoes , linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org On Wed, Jan 06, 2016 at 04:16:50PM +0300, Dan Carpenter wrote: > On Wed, Jan 06, 2016 at 01:08:00PM +0000, Al Viro wrote: > > On Wed, Jan 06, 2016 at 01:05:03PM +0300, Dan Carpenter wrote: > > > If memdup_user() fails then we end up passing an ERR_PTR to kfree() > > > which is a bug. > > > > Mind if I fold it (with credit, obviously)? > > No problem, that's fine. Done. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752697AbcAFN00 (ORCPT ); Wed, 6 Jan 2016 08:26:26 -0500 Received: from zeniv.linux.org.uk ([195.92.253.2]:41338 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751992AbcAFN0X (ORCPT ); Wed, 6 Jan 2016 08:26:23 -0500 Date: Wed, 6 Jan 2016 13:26:13 +0000 From: Al Viro To: Dan Carpenter Cc: Jens Axboe , Asai Thambi SP , Selvan Mani , Jeff Moyer , Michal Hocko , Rasmus Villemoes , linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: Re: [patch] mtip32xx: calling kfree() on an error pointer Message-ID: <20160106132613.GT9938@ZenIV.linux.org.uk> References: <20160106100503.GH23185@mwanda> <20160106130800.GS9938@ZenIV.linux.org.uk> <20160106131650.GH23363@mwanda> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160106131650.GH23363@mwanda> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 06, 2016 at 04:16:50PM +0300, Dan Carpenter wrote: > On Wed, Jan 06, 2016 at 01:08:00PM +0000, Al Viro wrote: > > On Wed, Jan 06, 2016 at 01:05:03PM +0300, Dan Carpenter wrote: > > > If memdup_user() fails then we end up passing an ERR_PTR to kfree() > > > which is a bug. > > > > Mind if I fold it (with credit, obviously)? > > No problem, that's fine. Done.