From owner-freebsd-current@FreeBSD.ORG Wed May 23 13:50:04 2012 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8ABD41065672; Wed, 23 May 2012 13:50:04 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id E04688FC0C; Wed, 23 May 2012 13:50:03 +0000 (UTC) Received: from skuns.kiev.zoral.com.ua (localhost [127.0.0.1]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id q4NDno6u034723; Wed, 23 May 2012 16:49:50 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5) with ESMTP id q4NDnn2M056723; Wed, 23 May 2012 16:49:49 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5/Submit) id q4NDnniR056722; Wed, 23 May 2012 16:49:49 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Wed, 23 May 2012 16:49:49 +0300 From: Konstantin Belousov To: Ian FREISLICH Message-ID: <20120523134949.GD2358@deviant.kiev.zoral.com.ua> References: <201205230930.03282.jhb@freebsd.org> <201205221641.13091.jhb@freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="9UX2PMFY68znkUo0" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-4.0 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: freebsd-current@freebsd.org Subject: Re: (no subject) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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, 23 May 2012 13:50:04 -0000 --9UX2PMFY68znkUo0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, May 23, 2012 at 03:42:14PM +0200, Ian FREISLICH wrote: > John Baldwin wrote: > > On Wednesday, May 23, 2012 12:28:53 am Ian FREISLICH wrote: > > > (kgdb) frame 7 > > > #7 0xc0878682 in pmap_enter (pmap=3D0xc09e4060, va=3D3359633408, acc= ess=3D7 '\a' > ,=20 > > > m=3D0xc191bf70, prot=3D7 '\a', wired=3D1) at=20 > > /usr/src/sys/i386/i386/pmap.c:1596 > > > 1596 root =3D vm_page_splay(mpte->pindex, root); > > > (kgdb) l > > > 1591 root =3D pmap->pm_root; > > > 1592 if (root =3D=3D NULL) { > > > 1593 mpte->left =3D NULL; > > > 1594 mpte->right =3D NULL; > > > 1595 } else { > > > 1596 root =3D vm_page_splay(mpte->pindex, root); > > > 1597 if (mpte->pindex < root->pindex) { > > > 1598 mpte->left =3D root->left; > > > 1599 mpte->right =3D root; > > > 1600 root->left =3D NULL; > >=20 > > Ok, can you do 'p root', 'p mpte', and 'p *mpte'? >=20 > (kgdb) frame 7 > #7 0xc0878682 in pmap_enter (pmap=3D0xc09e4060, va=3D3359633408, access= =3D7 '\a',=20 > m=3D0xc191bf70, prot=3D7 '\a', wired=3D1) at /usr/src/sys/i386/i386/p= map.c:1596 > 1596 root =3D vm_page_splay(mpte->pindex, root); > (kgdb) p root > No symbol "root" in current context. > (kgdb) p mpte > $1 =3D 0x0 > (kgdb) p *mpte > Cannot access memory at address 0x0 Do you have r235776 in your tree ? This could be another manifestation of this bug. --9UX2PMFY68znkUo0 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAk+86vwACgkQC3+MBN1Mb4hVcQCeIzArUvX1YB4ho1I1adF/FvyP XkYAnRxTtKnLUQ2Bz2qkT+jy4e3fPjQ5 =dTB/ -----END PGP SIGNATURE----- --9UX2PMFY68znkUo0--