From owner-freebsd-current@FreeBSD.ORG Wed Aug 6 03:19:39 2014 Return-Path: Delivered-To: current@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5AD86EEF; Wed, 6 Aug 2014 03:19:39 +0000 (UTC) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id F0A0B2182; Wed, 6 Aug 2014 03:19:38 +0000 (UTC) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.14.9/8.14.9) with ESMTP id s763JWb8038885 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 6 Aug 2014 06:19:32 +0300 (EEST) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.9.2 kib.kiev.ua s763JWb8038885 Received: (from kostik@localhost) by tom.home (8.14.9/8.14.9/Submit) id s763JW56038884; Wed, 6 Aug 2014 06:19:32 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Wed, 6 Aug 2014 06:19:32 +0300 From: Konstantin Belousov To: Bryan Drewery Subject: Re: r269147: NULL mp in getnewvnode() via kern_proc_filedesc_out() Message-ID: <20140806031932.GE93733@kib.kiev.ua> References: <53E1975D.4010703@FreeBSD.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="bG3OVe1RvEtjCM5X" Content-Disposition: inline In-Reply-To: <53E1975D.4010703@FreeBSD.org> User-Agent: Mutt/1.5.23 (2014-03-12) X-Spam-Status: No, score=-2.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on tom.home Cc: current@FreeBSD.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Aug 2014 03:19:39 -0000 --bG3OVe1RvEtjCM5X Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Aug 05, 2014 at 09:47:57PM -0500, Bryan Drewery wrote: > Has anyone else encountered this? Got it while running poudriere. >=20 > > NULL mp in getnewvnode() > > [...] > > vn_fullpath1() at vn_fullpath1+0x19d/frame 0xfffffe1247d8e540 > > vn_fullpath() at vn_fullpath+0xc1/frame 0xfffffe1247d8e590 > > export_fd_to_sb() at export_fd_to_sb+0x489/frame 0xfffffe1247d8e7c0 > > kern_proc_filedesc_out() at kern_proc_filedesc_out+0x234/frame 0xfffffe= 1247d8e840 > > sysctl_kern_proc_filedesc() at sysctl_kern_proc_filedesc+0x84/frame 0xf= ffffe1247d8e900 > > sysctl_root_handler_locked() at sysctl_root_handler_locked+0x68/frame 0= xfffffe1247d8e940 > > sysctl_root() at sysctl_root+0x18e/frame 0xfffffe1247d8e990 > > userland_sysctl() at userland_sysctl+0x192/frame 0xfffffe1247d8ea30 > > sys___sysctl() at sys___sysctl+0x74/frame 0xfffffe1247d8eae0 > > amd64_syscall() at amd64_syscall+0x25a/frame 0xfffffe1247d8ebf0 > > Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe1247d8ebf0 >=20 > Unfortunately I have no dump as the kmem was too large compared to my=20 > swap, and I didn't get to the console before some of the text was=20 > overwritten. Perhaps it will hit it again soon after reboot and I'll get= =20 > a core. "NULL mp in getnewvnode()" is only the printf(), it is not a panic or KASSERT. The event does not stop the machine, nor it prints the backtrace. You mentioned that you was unable to dump, so did the system paniced ? Without full log of the panic messages and backtrace, it is impossible to start guessing what the problem is. That said, the printf seemingly outlived its usefulness. --bG3OVe1RvEtjCM5X Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBAgAGBQJT4Z7DAAoJEJDCuSvBvK1BkcwP/A4MKPktAe1B3Md2nxOjSjjA X8FxCRdOsbhdLiiFsmn2GuV2bm8DZHZUH+fzM/m4pDkF09OJ3OKLzmdKE8fp6ZVG ss4CuxklBaC8O+UYZ7oy/cfwIosXlm+iaDwGDp39Uh1XMB5FhGx23x5oABxG7DTW FLbh0LAw9uLAvJv82m1Bi3LDj3EzQCo5m8s/MfbvPj+6PpEVNNUsxc8OZYZ6awUl HsG27dZPBu+XqutKxcJAzpc5CW8owQfnFV8tmXn4rcBgKT5RglJ/JT+L0SbdrOfd 0zgPVFn9pyKcn0QGU6W47GBGTk6i93OfPHyBIB7f0AOqd0w4W1ibyPagy3snwd4g dBAsMEtWxuBidQ5dbCnUGb6SrqhQqHGF6jcUQjEB1Adqt/yR51kHGN4HlvLITfdD f61B68qxRwxikk4pBjpKv3cCem4LdlMQBq6nztblHY0ZbCPym/O3/R9hA/YteBwR 76s5my79ioxj+2p9pk1LLmdIHUQQWaU6K2OJslAM0neGDj4T+1JBNgwmyRozHoxB 9Fwe5ZBNpR4JyN4KekWd0wsC/Hw8X+HQeUpe8WO3vqyr3WdKimsiFtxFY0ZEdjdb 4Qpvp6sU8In2sFODnoJvWeCt5znafX29Eh6stwvhnntjClNF899yatdMYnVUBr9m GrBndcWbZLNDP7RRHSsn =vL2Z -----END PGP SIGNATURE----- --bG3OVe1RvEtjCM5X--