From owner-freebsd-net@FreeBSD.ORG Thu Mar 26 18:56:57 2015 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx2.freebsd.org (mx2.freebsd.org [IPv6:2001:1900:2254:206a::19:2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4D84D7D7; Thu, 26 Mar 2015 18:56:57 +0000 (UTC) Received: from butcher-nb.yandex.net (hub.freebsd.org [IPv6:2001:1900:2254:206c::16:88]) by mx2.freebsd.org (Postfix) with ESMTP id 17DEC3676; Thu, 26 Mar 2015 18:56:55 +0000 (UTC) Message-ID: <5514560C.5070406@FreeBSD.org> Date: Thu, 26 Mar 2015 21:55:08 +0300 From: "Andrey V. Elsukov" User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: hiren panchasara , freebsd-net@freebsd.org Subject: Re: pagefault in IPv6 codepath in defrouter_select() References: <20150325214832.GI53237@strugglingcoder.info> In-Reply-To: <20150325214832.GI53237@strugglingcoder.info> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Xij7XOAS6forwNWoSA7fJ6JoFJMLtsI9h" Cc: hrs@freebsd.org, nitroboost@gmail.com X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Mar 2015 18:56:57 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Xij7XOAS6forwNWoSA7fJ6JoFJMLtsI9h Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 26.03.2015 00:48, hiren panchasara wrote: > This is 3rd occurence of this panic. What could be the cause? > I have vmcore and can provide more info if needed. Hi, the problem is that ND6 code maintains at least two lists of prefixes without any locking: V_nd_defrouter and V_nd_prefix. --=20 WBR, Andrey V. Elsukov --Xij7XOAS6forwNWoSA7fJ6JoFJMLtsI9h Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCAAGBQJVFFYNAAoJEAHF6gQQyKF6BO0IALUTi9gC9oHUwKFUvPq9EQqV tN22BhLVMf733wihsmcjmA2OdRBkaOdXNP3xnJtymUfjOiqlgVn0MFItsWcowFIQ oecK1axsmFrWq1niN7P2Xc2AyigyFC5fUZS0+Dy05oXI14D+Mtp+p8Nis2U25pCQ wOwo4zWvZEE9rWHZVY77LdQ7N4Zh1PMY0BpwP4WYZHPV9SKhdX433Whwoj7+xcMH fbA2WMW4a6FuB9Z7kJwfJ6YLh7HDG0w0T0tAQjSC4/06DPnn1WbEypwKBBEwBRk0 XnZImYHETtK7u0MtVpweBYBQmrnwWfyOof5IQg2VNEqIT0P4ZFl71Nk4cdx/fjU= =aXGu -----END PGP SIGNATURE----- --Xij7XOAS6forwNWoSA7fJ6JoFJMLtsI9h--