Date: Thu, 21 Aug 2014 12:32:03 -0700 From: yaneurabeya@gmail.com To: "O. Hartmann" <ohartman@zedat.fu-berlin.de> Cc: FreeBSD CURRENT <freebsd-current@freebsd.org> Subject: Re: r270287: crash Message-ID: <D87D8356-7D66-4696-AA0E-F4DFDD41C0A3@gmail.com> In-Reply-To: <20140821212619.6bdffad0@munin.walstatt.dyndns.org> References: <20140821212619.6bdffad0@munin.walstatt.dyndns.org>
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--Apple-Mail=_905A9233-F865-4455-B099-CCA203DE8D7B Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 On Aug 21, 2014, at 12:26 PM, O. Hartmann <ohartman@zedat.fu-berlin.de> = wrote: > FreeBSD r270287 crashes/reboots instantanously on loading the kernel. = I > can not see at what point (on modern systems like Ivy Bridge). On = older > Core2Duo systems I get a trap 12 in APIC or similar. >=20 > While I was able to start kernel.old on the modern systems, I fail on > both kernel and kernel.old on the C2D system. >=20 > I'd like to know whether there is a way to save the system I can not > reboot the on-disk kernels snce they are, woderfull, compromised. >=20 > Is there a possible scenario like: >=20 > a) boot from DVD ROM or USB most recent snapshot > b) establish network with on-disk config, svn checkout recent sources > into on-disk file hierarchy > c) build repaired/patched kernel and install on on-disk (not on the > emergency boot media). I would grab a snapshot ISO or USB disk image: = ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/amd64/amd64/ISO-IMAGES/11.0/ = . After that you can mount your filesystems, revert to an earlier SVN = revision, and repair your system that way. You could also copy over the = /boot/kernel as long as you didn=92t have/need any customizations. > Thanks, help appreciated and what is about this crash affecting recent > CURRENT r270287, what has corrupted the system? That=92s a better question. Booting off newer sources worked on my VM at = least, but it=92s not real hardware. Maybe something dealing with = vt(4)/xen? HTH! -Garrett --Apple-Mail=_905A9233-F865-4455-B099-CCA203DE8D7B Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQEcBAEBCgAGBQJT9kkzAAoJEMZr5QU6S73e/KIH/id970a+NsmmOOkT01a2xOPd gM3/mGP6a3lzh2/7LCs7EY/sa1KMsVhG2f52ci0hCRVfC++HQ9AIGlFWGyp2cUu+ hC8Wv12J8cPiCpbZZfkZU+9SfBQX4+8uGx5PorwKxCH4EUF3nLRfzzSNT01UAG0m iXcOff4/cWBkUhlN6Xf8PF9fYjOsffqiP9U9100NHYYFAqKU9DAXHNuHhajC3b34 zckn8kZ+/zRBj7uqQWg8z2NbwStx9v41cNh0OOBrAZWHf49rHsrynRpctaw5ATJU vzfC9JxpMSKbJGH/dOjjE4deMahhELyHhGjhKN9abxoebaASFBnd/gnkuy8Q3rA= =ythS -----END PGP SIGNATURE----- --Apple-Mail=_905A9233-F865-4455-B099-CCA203DE8D7B--
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