From owner-freebsd-stable@freebsd.org Wed Aug 17 09:31:48 2016 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A2889BBD290 for ; Wed, 17 Aug 2016 09:31:48 +0000 (UTC) (envelope-from ml@netfence.it) Received: from mailman.ysv.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 8F76B1CEE for ; Wed, 17 Aug 2016 09:31:48 +0000 (UTC) (envelope-from ml@netfence.it) Received: by mailman.ysv.freebsd.org (Postfix) id 8ED55BBD28F; Wed, 17 Aug 2016 09:31:48 +0000 (UTC) Delivered-To: stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8E7B7BBD28E for ; Wed, 17 Aug 2016 09:31:48 +0000 (UTC) (envelope-from ml@netfence.it) Received: from smtp206.alice.it (smtp206.alice.it [82.57.200.102]) by mx1.freebsd.org (Postfix) with ESMTP id 26D771CED for ; Wed, 17 Aug 2016 09:31:47 +0000 (UTC) (envelope-from ml@netfence.it) Received: from soth.ventu (79.43.53.210) by smtp206.alice.it (8.6.060.28) (authenticated as acanedi@alice.it) id 57B41C3800023A10; Wed, 17 Aug 2016 11:26:03 +0200 Received: from alamar.ventu (alamar.local.netfence.it [10.1.2.18]) by soth.ventu (8.15.2/8.15.2) with ESMTP id u7H9Q2hJ005244; Wed, 17 Aug 2016 11:26:02 +0200 (CEST) (envelope-from ml@netfence.it) X-Authentication-Warning: soth.ventu: Host alamar.local.netfence.it [10.1.2.18] claimed to be alamar.ventu Subject: Re: Call for testing: VM bugs in 10.3 To: Konstantin Belousov , "stable@freebsd.org" References: <20160802192538.GQ83214@kib.kiev.ua> From: Andrea Venturoli Message-ID: <0ee051d7-3115-1150-0efe-2508d89e3e02@netfence.it> Date: Wed, 17 Aug 2016 11:26:02 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD i386; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <20160802192538.GQ83214@kib.kiev.ua> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Aug 2016 09:31:48 -0000 On 08/02/16 21:25, Konstantin Belousov wrote: > Below is the merge of some high-profile virtual memory subsystem bug > fixes from stable/10 to 10.3. I merged fixes for bugs reported by > users, issues which are even theoretically unlikely to occur in real > world loads, are not included into the patch set. The later is mostly > corrections for the handling of radix insertion failures. Included fixes > are for random SIGSEGV delivered to processes, hangs on "vodead" state > on filesystem operations, and several others. > > List of the merged revisions: > r301184 prevent parallel object collapses, fixes object lifecycle > r301436 do not leak the vm object lock, fixes overcommit disable > r302243 avoid the active object marking for vm.vmtotal sysctl, fixes > "vodead" hangs > r302513 vm_fault() race with the vm_object_collapse(), fixes spurious SIGSEGV > r303291 postpone BO_DEAD, fixes panic on fast vnode reclaim > > I am asking for some testing, it is not necessary for your system to > exhibit the problematic behaviour for your testing to be useful. I am > more looking for smoke-testing kind of confirmation that patch is fine. > Neither I nor people who usually help me with testing, run 10.3 systems. > > If everything appear to be fine, my intent is to ask re/so to issue > Errata Notice with these changes in about a week from now. I upgraded a 10.3/amd64 system which in fact was showing some possibly related troubles. So far so good, since I haven't had any problem: altough it's close to impossible to deterministically reproduce the locks I've had, I saw no regression so far. I plan to upgrade other boxes in some weeks. bye & Thanks av.