From owner-freebsd-current@FreeBSD.ORG Sun Apr 4 08:56:25 2010 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 B38E51065670 for ; Sun, 4 Apr 2010 08:56:25 +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 162C38FC08 for ; Sun, 4 Apr 2010 08:56:24 +0000 (UTC) Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id o348uI4m053234 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 4 Apr 2010 11:56:18 +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 (8.14.4/8.14.4) with ESMTP id o348uIDa050099; Sun, 4 Apr 2010 11:56:18 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4/Submit) id o348uIA6050098; Sun, 4 Apr 2010 11:56:18 +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: Sun, 4 Apr 2010 11:56:18 +0300 From: Kostik Belousov To: Bruce Cran Message-ID: <20100404085618.GX2415@deviant.kiev.zoral.com.ua> References: <201004040904.50998.bruce@cran.org.uk> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="my+VSKri2szq3kvl" Content-Disposition: inline In-Reply-To: <201004040904.50998.bruce@cran.org.uk> 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=-3.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00, DNS_FROM_OPENWHOIS autolearn=no 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: "npxdna in kernel mode!" from VIA_RNG_store 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: Sun, 04 Apr 2010 08:56:25 -0000 --my+VSKri2szq3kvl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Apr 04, 2010 at 09:04:50AM +0100, Bruce Cran wrote: > I noticed my mini-ITX box (runnning -CURRENT) has been printing quite a f= ew=20 > "npxdna in kernel mode!" messages recently, so I added KDB support to fin= d out=20 > where they were coming from. The stack trace I got was: >=20 > npxdna in kernel mode! > KDB: stack backtrace: > db_trace_self_wrapper(c07de67f,c8297ab8,c07a477e,c07fc759,7,...) at=20 > db_trace_self_wrapper+0x28 > kdb_backtrace(c07fc759,7,33,50,13,...) at kdb_backtrace+0x31 > trap(c8297ac4) at trap+0x55e > calltrap() at calltrap+0x6 > --- trap 0x16, eip =3D 0xc07801f0, esp =3D 0xc8297b04, ebp =3D 0xc8297b14= --- > VIA_RNG_store(c0865760,4,c181e6c0,c054ad43,c0811dc0,...) at VIA_RNG_store= +0x20 > random_nehemiah_read(c185c000,80,2,c185c000,0,...) at=20 > random_nehemiah_read+0x71 > random_read(c1476200,c8297c28,0,1000000,0,...) at random_read+0x7c > devfs_read_f(c1566c08,c8297c28,c182e080,0,c181e6c0,...) at devfs_read_f+0= xa1 > fo_read(c1566c08,c8297c28,c182e080,0,c181e6c0,...) at fo_read+0x32 > dofileread(c181e6c0,5,c1566c08,c8297c28,ffffffff,...) at dofileread+0x81 > kern_readv(c181e6c0,5,c8297c28,5,c8297c48,...) at kern_readv+0x68 > read(c181e6c0,c8297cc8,c181e6c0,c181e6c0,c187d2a8,...) at read+0x63 > syscall(c8297d38) at syscall+0x3ad > Xint0x80_syscall() at Xint0x80_syscall+0x20 > --- syscall (3, FreeBSD ELF32, read), eip =3D 0x28398b83, esp =3D 0xbfbfd= e5c, ebp=20 > =3D 0xbfbfdf18 --- >=20 > A dmesg can be found at http://www.cran.org.uk/~brucec/freebsd/dmesg.itx Known issue. The patch at http://people.freebsd.org/~kib/misc/kern_fpu.2.patch contains the possible fix. --my+VSKri2szq3kvl Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (FreeBSD) iEYEARECAAYFAku4VDIACgkQC3+MBN1Mb4jsggCg7NUQ8wx2FGcJM1OJ9iL8A+hf vG0An1HP4lKpge6fcvY2L7sn0Tm9/lIi =Ta6y -----END PGP SIGNATURE----- --my+VSKri2szq3kvl--