From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Bader Subject: Re: Possible bug, dom0 crash on ubuntu Date: Mon, 18 Jun 2012 11:00:42 +0200 Message-ID: <4FDEEE3A.9090302@canonical.com> References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8104762174770862141==" Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Rolu Cc: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --===============8104762174770862141== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="------------enig4D7AFD07F4F7B9CAA9BA0C89" This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig4D7AFD07F4F7B9CAA9BA0C89 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 17.06.2012 05:23, Rolu wrote: > On Sun, Jun 17, 2012 at 5:04 AM, AP wrote: >> >> On Jun 16, 2012 5:56 PM, "Rolu" wrote: >>> >>> When booting a recently compiled Xen 4.2 on Ubuntu 12.04, dom0 >>> crashes. I've included a serial console log below. >>> >>> I've used: >>> Xen 4.2 unstable rev. 25483, compiled on the same machine. I had to >>> apply the AT_EMPTY_PATH patch from >>> http://lists.gnu.org/archive/html/qemu-devel/2012-02/msg03460.html to= >>> get it to compile. >>> Linux 3.2.0-25, which is the default kernel in Ubuntu's repository ri= ght >>> now. >>> Ubuntu 12.04 Precise >>> >>> Booting with the default Xen 4.1 from the Ubuntu repositories works. >>> >>> Using the kernel from >>> http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/, which is= >>> a mainline Linux kernel (and also more recent) works with my compiled= >>> version of Xen 4.2 >>> >>> So, >>> * Is xen 4.2 not happy with the 3.2 kernel I've used? >>> * Is this due to something Ubuntu modified in their default kernel? >>> * Is this an issue with Xen? >>> * Did I break something? >> >> This is an issue with the Ubuntu kernel. Check this thread out: >> http://lists.xen.org/archives/html/xen-devel/2012-05/msg00049.html >> This is an issue between libc not checking all flags correctly and a curr= ent hack to work around a bug on older Xen versions. If I understood correctly there was a fix going into libc but I am also i= n the process of changing that hack to prevent those issues. But it will go int= o 12.10 first and then move backwards. -Stefan >> Adding xsave=3D0 to the Xen kernel line in grub is the workaround. >> >=20 > Indeed, this worked. Thanks! >=20 > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel --------------enig4D7AFD07F4F7B9CAA9BA0C89 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBCgAGBQJP3u46AAoJEOhnXe7L7s6ju5QP/j1VWIp71pHlNKdXmlSpdlNB DPrusJnA8hwTrnyzubbLkqViSoH75aOfF+LMeaq63UabS5E2XXVyRXp6q6QAvtJ3 XR+hSbGYLgvq/5BlF9bYoq5FMFzESOGDbKnMnVM2/VYgRuY5EqWqh/UAOPbQWzKl eoR2axU/aQorB9MkIK1CtGdlOSZm2ADYvlJgfBz0uCv8/s/XlSuQWWsTyZyeyn0D 5aKU9Nf2BixsiSaPe+g8YAzqlZxTPxaKq1S8gkJ2MGwPVNozusa5koyWmDP++00v jAPy8H840ErIeDOXnXlronmst9EgSTs8Gk8NifaiOojZF2d32Tbs6uHkUd6427oZ LzYYgIp6aPtmChWF6hynx5l/teg3XRigenEwxJaO0LIP8u2Y0tpBIjRbPJjEEmm0 ELHrB1kuVWAbCH0ZPduXkI5CMrsl1ZbCVvrStl7FX5zULG1A5Y/hehYfKyTZUIFz L+hD62i75gUNAym7TfDgROVXeUid3Y+m85hJTUvwu1lAxuVw8Qj9VFAGgwXTySxs D5ozcjRI4BRtNzOMazGtxDTbtWx6E9Rapg9bB3WH0RSKX0ri7Wqn+r/lWBsAgmOL wslgqosW17ChKsreeJvY4heoRyZJYyeJUn5bpGJ+ob2V/LI2SWU6Z8R4nlUOYGbS TRLnAQhSQ/wr0fxpufew =JXqE -----END PGP SIGNATURE----- --------------enig4D7AFD07F4F7B9CAA9BA0C89-- --===============8104762174770862141== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel --===============8104762174770862141==--