From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bruce Richardson Subject: Re: [PATCH v3 4/9] mem: fix potential resource leak Date: Fri, 27 Apr 2018 16:48:49 +0100 Message-ID: <20180427154849.GA94056@bricha3-MOBL.ger.corp.intel.com> References: <4d15c97e68ce89c0915935c6c04099a9eb950232.1524650130.git.anatoly.burakov@intel.com> <20180427151831.GD80648@bricha3-MOBL.ger.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: dev@dpdk.org, thomas@monjalon.net To: "Burakov, Anatoly" Return-path: Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id 0C15C7D19 for ; Fri, 27 Apr 2018 17:48:53 +0200 (CEST) Content-Disposition: inline In-Reply-To: List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On Fri, Apr 27, 2018 at 04:39:34PM +0100, Burakov, Anatoly wrote: > On 27-Apr-18 4:18 PM, Bruce Richardson wrote: > > On Wed, Apr 25, 2018 at 10:56:42AM +0100, Anatoly Burakov wrote: > > > We close fd if we managed to find it in the list of allocated > > > segment lists (which should always be the case under normal > > > conditions), but if we didn't, the fd was leaking. Close it if > > > we couldn't find it in the segment list. This is not an issue > > > as if the segment is zero length, we're getting rid of it > > > anyway, so there's no harm in not storing the fd anywhere. > > > > > > Coverity issue: 272568 > > > > > > > This coverity issue indicates two resource leaks, while I think this patch > > only closes one of them. > > The other issue is actually a false positive. We couldn't have gotten the fd > if there wasn't a tailq entry for that fd, but if we don't resize and remove > the file, we want to keep the fd. So the "int fd" goes out of scope, but > actually it's stored in the tailq, and thus doesn't leak. > I'm not sure coverity is going to recognise that fact. However, given that this is a fix for one of the flagged problems: Acked-by: Bruce Richardson