From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: kvm-78 - kernel panic after using system_reset except when using -no-kvm-irqchip Date: Fri, 14 Nov 2008 19:50:27 +0100 Message-ID: <491DC873.1010200@web.de> References: <491A807F.20403@web.de> <491B44AD.6080808@web.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigA041EC37630DD4448392058E" Cc: kvm@vger.kernel.org To: Charles Duffy Return-path: Received: from fmmailgate01.web.de ([217.72.192.221]:48886 "EHLO fmmailgate01.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753346AbYKNSvJ (ORCPT ); Fri, 14 Nov 2008 13:51:09 -0500 In-Reply-To: <491B44AD.6080808@web.de> Sender: kvm-owner@vger.kernel.org List-ID: This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigA041EC37630DD4448392058E Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Jan Kiszka wrote: > Charles Duffy wrote: >> Jan Kiszka wrote: >>> Charles Duffy wrote: >>>> irq 25, desc: ffffffff803afc80, depth: 1, count: 0, unhandled: 0 >>>> ->handle_irq(): ffffffff800b54e3, handle_bad_irq+0x0/0x1f6 >>>> ->chip(): ffffffff802ea700, 0xffffffff802ea700 >>>> ->action(): 0000000000000000 >>>> IRQ_DISABLED set >>>> unexpected IRQ trap at vector 19 >>>> ..MP-BIOS bug: 8254 timer not connected to IO-APIC >>>> timer doesn't work through the IO-APIC - disabling NMI Watchdog! >>>> Kernel panic - not syncing: IO-APIC + timer doesn't work! Try using = the >>>> 'noapic' kernel parameter >>> Still too early for me, so I didn't get yet if you can trigger this >>> guest panic reliably or only sporadically (like I can). In the former= >>> case I would be very interested in the how! >> Reproduced 100% of the time when using system_reset at the qemu monito= r >> console coming from a non-panic'd state. (Thus, it happens only every >> other time doing a series of boots and system_reset monitor commands).= >=20 > Mmmh, /that/ sounds like some (re-)initialization issue of the > virtualized hardware. OK, once that kernel boots again on latest kvm.gi= t > (currently broken due to a different issue), I will try to reproduce it= =2E OK, I can reproduce now. It's an in-kernel irqchip, -no-kvm-irqchip doesn't suffer. Will see if I can find the reason. Jan --------------enigA041EC37630DD4448392058E Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iEYEARECAAYFAkkdyHMACgkQniDOoMHTA+mD4ACff2/fIe3/8Bq7ZdvPsYq1GFyr bqwAn0gajjbcYP6o0W2RyWYzDsfgtk+U =TC9E -----END PGP SIGNATURE----- --------------enigA041EC37630DD4448392058E--