From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: VirtualBox 4.2.4 freezes PC using RT_PREEMPT kernel Date: Sat, 15 Dec 2012 11:14:35 +0100 Message-ID: <50CC4D8B.9050004@web.de> References: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigA3EB4B43A5B7049D46959663" Cc: "linux-rt-users@vger.kernel.org" To: "Koehrer Mathias (ETAS/ESS2)" Return-path: Received: from mout.web.de ([212.227.15.4]:56412 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751037Ab2LOKOm (ORCPT ); Sat, 15 Dec 2012 05:14:42 -0500 In-Reply-To: Sender: linux-rt-users-owner@vger.kernel.org List-ID: This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigA3EB4B43A5B7049D46959663 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 2012-12-14 09:58, Koehrer Mathias (ETAS/ESS2) wrote: > Hi all, >=20 > I have detected the following issue: > I use an x86 PC using kernel 3.2.34-rt51 and I want to run VirtualBox 4= =2E2.4 using this PC as host. > However, the PC freezes completely when loading the vbox driver "vboxdr= v". > Using the very same kernel without the RT_PREEMPT patch shows no issues= =2E >=20 > Using an older version of VirtualBox (V4.1.22) works fine as well. >=20 > I know that this might be slightly off-topic. However there might be so= me RT_PREEMPT users that have detected the same issue and know a solution= for this. >=20 > I have attached my kernel .config file. >=20 > Thanks for any feedback on this. Try enabling lock debugging. Likely there is an incompatibility in the vbox driver or even a bug, and that may reveal more details. Otherwise: KVM is the better choice on Linux hosts, and it works fine over -rt. Jan --------------enigA3EB4B43A5B7049D46959663 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (GNU/Linux) Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEARECAAYFAlDMTYsACgkQitSsb3rl5xRvnQCfW3TurRq+2maCHhErG8RArRYn QOUAnjvI5pqdvSlG1o1O3zATw2wy5XTn =zlAL -----END PGP SIGNATURE----- --------------enigA3EB4B43A5B7049D46959663--