From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxim Levitsky Subject: Another bad usage of smp_processor_id Date: Sun, 29 Aug 2010 13:26:19 +0300 Message-ID: <1283077579.5529.2.camel@maxim-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-bw0-f46.google.com ([209.85.214.46]:40338 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752492Ab0H2K0Y (ORCPT ); Sun, 29 Aug 2010 06:26:24 -0400 Received: by bwz11 with SMTP id 11so3046540bwz.19 for ; Sun, 29 Aug 2010 03:26:23 -0700 (PDT) Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: "linux-acpi@vger.kernel.org" Hi, Now that I applied the patch that makes NMI watchdog not trigger this, the amount of backtraces reduced, so I finally notice that on resume: [ 3226.997285] Back to C! [ 3226.997285] PM: Restoring platform NVS memory [ 3226.997285] CPU0: Thermal monitoring handled by SMI [ 3226.997285] Enabling non-boot CPUs ... [ 3227.000076] BUG: using smp_processor_id() in preemptible [00000000] code: pm-suspend/5185 [ 3227.000085] caller is thermal_throttle_add_dev+0x20/0xa4 [ 3227.000091] Pid: 5185, comm: pm-suspend Tainted: P 2.6.36-rc2+ #132 [ 3227.000096] Call Trace: [ 3227.000104] [] debug_smp_processor_id+0xd2/0xf0 [ 3227.000110] [] thermal_throttle_add_dev+0x20/0xa4 [ 3227.000117] [] thermal_throttle_cpu_callback+0x4c/0xb7 [ 3227.000123] [] notifier_call_chain+0x51/0x80 [ 3227.000130] [] ? cpu_maps_update_begin+0x12/0x20 [ 3227.000136] [] __raw_notifier_call_chain+0x9/0x10 [ 3227.000141] [] __cpu_notify+0x1b/0x30 [ 3227.000147] [] _cpu_up+0x6e/0x10d [ 3227.000153] [] enable_nonboot_cpus+0x95/0xc0 [ 3227.000160] [] suspend_devices_and_enter+0x10c/0x1e0 [ 3227.000166] [] enter_state+0x11c/0x190 [ 3227.000172] [] state_store+0x91/0x100 [ 3227.000179] [] kobj_attr_store+0x17/0x20 [ 3227.000185] [] sysfs_write_file+0xf2/0x170 [ 3227.000192] [] vfs_write+0xc8/0x190 [ 3227.000198] [] sys_write+0x4f/0x90 [ 3227.000205] [] system_call_fastpath+0x16/0x1b [ 3227.000328] lockdep: fixing up alternatives. [ 3227.000332] SMP alternatives: switching to SMP code Best regards, Maxim Levitsky