From owner-svn-src-head@freebsd.org Fri Aug 12 15:11:25 2016 Return-Path: Delivered-To: svn-src-head@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 ECEBDBB7458; Fri, 12 Aug 2016 15:11:25 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mithlond.kdm.org (mithlond.kdm.org [96.89.93.250]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "A1-33714", Issuer "A1-33714" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id A6D531B48; Fri, 12 Aug 2016 15:11:25 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mithlond.kdm.org (localhost [127.0.0.1]) by mithlond.kdm.org (8.15.2/8.14.9) with ESMTPS id u7CFBHBY052486 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 12 Aug 2016 11:11:17 -0400 (EDT) (envelope-from ken@mithlond.kdm.org) Received: (from ken@localhost) by mithlond.kdm.org (8.15.2/8.14.9/Submit) id u7CFBHLf052485; Fri, 12 Aug 2016 11:11:17 -0400 (EDT) (envelope-from ken) Date: Fri, 12 Aug 2016 11:11:17 -0400 From: "Kenneth D. Merry" To: "Andrey V. Elsukov" Cc: Bryan Drewery , Peter Wemm , svn-src-all@freebsd.org, svn-src-head@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r303019 - head/sys/geom Message-ID: <20160812151117.GA52309@mithlond.kdm.org> References: <201607190536.u6J5aLl7015268@repo.freebsd.org> <3277576.dFZ2EGo2Fh@overcee.wemm.org> <6198652.UmU69kS6Zt@overcee.wemm.org> <181fcc35-3a5d-043f-7dc4-7a01a53eebae@FreeBSD.org> <7372bf93-69a2-f5f5-1d07-204fd31f252c@FreeBSD.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7372bf93-69a2-f5f5-1d07-204fd31f252c@FreeBSD.org> User-Agent: Mutt/1.5.23 (2014-03-12) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (mithlond.kdm.org [127.0.0.1]); Fri, 12 Aug 2016 11:11:18 -0400 (EDT) X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS autolearn=ham autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on mithlond.kdm.org X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Aug 2016 15:11:26 -0000 On Fri, Aug 12, 2016 at 13:38:21 +0300, Andrey V. Elsukov wrote: > On 12.08.16 03:26, Bryan Drewery wrote: > > On r303467 I ran into this: > > > > panic @ time 1470916206.652, thread 0xfffff8000412f000: > > g_resize_provider_event but withered > > cpuid = 0 > > Panic occurred in module kernel loaded at 0xffffffff80200000: > > > > Stack: -------------------------------------------------- > > kernel:kassert_panic+0x166 > > kernel:g_resize_provider_event+0x181 > > kernel:g_run_events+0x186^M^M > > kernel:fork_exit+0x83^M^M > > -------------------------------------------------- > > > > No further information available unfortunately. > > This one is related to r302087 :) It looks like there is a race. I think we need to replace the KASSERT in g_resize_provider_event() with a return in case the provider is withered. I won't be able to work on or test this until sometime next week. So if you guys want to go ahead and make the change, please do. Ken -- Kenneth Merry ken@FreeBSD.ORG