From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759863AbXKTMgS (ORCPT ); Tue, 20 Nov 2007 07:36:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755797AbXKTMgL (ORCPT ); Tue, 20 Nov 2007 07:36:11 -0500 Received: from crystal.sipsolutions.net ([195.210.38.204]:37569 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754728AbXKTMgK (ORCPT ); Tue, 20 Nov 2007 07:36:10 -0500 Subject: NULL dereference in clockevents_program_event From: Johannes Berg To: Thomas Gleixner Cc: Ingo Molnar , Linux Kernel list , linuxppc-dev list , Paul Mackerras Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-TMxDqhAVH2yKIVXj0ubm" Date: Mon, 19 Nov 2007 21:06:44 +0100 Message-Id: <1195502804.19479.6.camel@johannes.berg> Mime-Version: 1.0 X-Mailer: Evolution 2.12.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --=-TMxDqhAVH2yKIVXj0ubm Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Hi, During a hibernate cycle on my G5, while machine was powering down after saving the image, I just had a NULL dereference in clockevents_program_event when accessing dev->mode, dev was NULL. Unfortunately the machine rebooted before I was able to write down more than the fact that it was called from tick_program_event(); the problem doesn't seem to be easily reproducible. =46rom what I can see when doing the same thing, the shutdown attempts to offline all CPUs. Because the snapshot was actually saved to disk and the machine was shutting down I guess that the it happened at that time, but I have no idea what else to do to debug this. I have | CONFIG_HIGH_RES_TIMERS=3Dy | CONFIG_NO_HZ=3Dy in this config. johannes --=-TMxDqhAVH2yKIVXj0ubm Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Comment: Johannes Berg (powerbook) iQIVAwUAR0Hs06Vg1VMiehFYAQJUuw//dwXy5lFVNZzjnOJdIszRKUkpqCFwGK2N vKba7eUvmWyLTXeWarC4lxrG0Hu0dH9Ep48q2ciBAKWjdjkD8OQbXyIt56f3/VLS VxkHOmFFshSAa9y0sMiuEOqYjmj5bVN7VTGKgMgqznjDEt4xbe3PUqPA7i7dwX29 lc6+TfDCin1NZkUM4kXGSIYZaupe0/qGdD+GY11uYgPyhfpHU9XIZPJpOhqmPta5 Kb/AGilz0LgcPGRXKs3YRWatKhLl6lYsRFPhyUIRZtaiBNoxxBbGcxD4H4NBdWtS Kv9mPc0m21rd7OGmMEAa3CmsnERqXUPclJwksJFqq+wVHZp8RPB4M7Bd/k8121zM j3BKL9Hsy9y+YsibCeuw/4hz+sk7ZDP/iHa4A5vppqbTVGswjycRO6gaLWO3ydbY sI8oVnsoRYNHtckyOCjn76Ar6FVUjn0ukrz35NpQoVVnzmnkQk9L3H8QTx+G0LYA smOqZYc6H95YFswF7sAudRqG/oab4feGXVgV+zX2jKQOrOvNa2xHpfpQXcRIVNl/ xV88cxDbp7TEQd1oZ1QFE4h1kr7v/h5w6mWhq8BXz6OdQKd09IjdHs49SX6DgetM 2TsCqefz9Krom/NgBcShEIQNg6nYZzc1uAsSf5mfJ0XC+ooJXA54G+428hDBCIVm 92rAdQhnYJ4= =SHwy -----END PGP SIGNATURE----- --=-TMxDqhAVH2yKIVXj0ubm--