From owner-freebsd-current@FreeBSD.ORG Thu Aug 21 19:32:06 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 01AD9BFF for ; Thu, 21 Aug 2014 19:32:05 +0000 (UTC) Received: from mail-pd0-x22e.google.com (mail-pd0-x22e.google.com [IPv6:2607:f8b0:400e:c02::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id C626C3D6E for ; Thu, 21 Aug 2014 19:32:05 +0000 (UTC) Received: by mail-pd0-f174.google.com with SMTP id fp1so14403264pdb.5 for ; Thu, 21 Aug 2014 12:32:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :message-id:references:to; bh=qQghEFj203GtgmPRhFC+rxEeV7xS0ruBiGbYLxMCI1Y=; b=IVejD9Kz1ZaHzEv2ajybi1lHeA5MszlXPDOidj5bRvN6mHzIDecfUNdMryR7ZzE5+o D2IO5+qXdskndjaWdJlhf20/svA/8M5eNG7K3Aa8M1Tp59HWnQM2YsN11xnsDDbSqGNs pFzqwtFgWXebRA+HOEJdeYb6lC6IeRW/gcRcsB7u/wQ5+LGmgdbdIN8qftE9i/5JJis3 K/ChxzU7q1Gvfq/5KkYtkZfodofNwfDz02DcCOlFYIhIkYHFpNDAzNYZgqT60n/DVorT ipAz0vXgNfR+zwChABTMe5eYAw2bBNwYyjTuSGm9cfVYAzrSZayNqIKq86NiINACGtNZ vFaA== X-Received: by 10.68.241.138 with SMTP id wi10mr780438pbc.126.1408649525322; Thu, 21 Aug 2014 12:32:05 -0700 (PDT) Received: from ?IPv6:2601:8:ab80:7d6:8d:53e0:9bd6:2ebb? ([2601:8:ab80:7d6:8d:53e0:9bd6:2ebb]) by mx.google.com with ESMTPSA id bo1sm18749326pdb.76.2014.08.21.12.32.04 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 21 Aug 2014 12:32:04 -0700 (PDT) Content-Type: multipart/signed; boundary="Apple-Mail=_905A9233-F865-4455-B099-CCA203DE8D7B"; protocol="application/pgp-signature"; micalg=pgp-sha512 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Subject: Re: r270287: crash From: yaneurabeya@gmail.com In-Reply-To: <20140821212619.6bdffad0@munin.walstatt.dyndns.org> Date: Thu, 21 Aug 2014 12:32:03 -0700 Message-Id: References: <20140821212619.6bdffad0@munin.walstatt.dyndns.org> To: "O. Hartmann" X-Mailer: Apple Mail (2.1878.6) Cc: FreeBSD CURRENT X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 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: Thu, 21 Aug 2014 19:32:06 -0000 --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 = 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--