From owner-freebsd-fs@freebsd.org Sun Aug 19 23:25:26 2018 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 31FFA107B9EF for ; Sun, 19 Aug 2018 23:25:26 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id C3A7C8FA2A for ; Sun, 19 Aug 2018 23:25:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 84EA4107B9EE; Sun, 19 Aug 2018 23:25:25 +0000 (UTC) Delivered-To: fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 73913107B9ED for ; Sun, 19 Aug 2018 23:25:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 0219E8FA27 for ; Sun, 19 Aug 2018 23:25:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 4D68E1CD10 for ; Sun, 19 Aug 2018 23:25:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w7JNPOe1022383 for ; Sun, 19 Aug 2018 23:25:24 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w7JNPOkF022382 for fs@FreeBSD.org; Sun, 19 Aug 2018 23:25:24 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 230752] panic: excl->share in newnfs_request Date: Sun, 19 Aug 2018 23:25:24 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: panic X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: rmacklem@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: fs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 19 Aug 2018 23:25:26 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D230752 Rick Macklem changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rmacklem@FreeBSD.org --- Comment #1 from Rick Macklem --- Is there a specific situation happening when these panic()s occur? (such as startup, shutdown or ??) Basically, the panic() happens when the kernel RPC code is doing a connect on an AF_LOCAL socket created by the nfsuserd daemon to do an upcall. I'll admit I haven't tested this myself recently, but I'll try running nfsuserd on current. (prior to FreeBSD12, nfsuserd uses a UDP socket, so this panic() wouldn't happen) (Since unp_connectat() does a straightforward namei(), I don't know why there would be an "excl->shared" panic? The code is using LK_SHARED for the lookup, but that happens all the time.) I am wondering if somehow the AF_LOCAL socket got deleted and that confuses the namei()/lookup(). (The socket is /var/run/nfsuserd.sock.) If the panic()s are causing you grief, you can add the -use-udpsock command line option to nfsuserd to make it use the UDP socket, like FreeBSD= -11. --=20 You are receiving this mail because: You are the assignee for the bug.=