From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Borkmann Subject: ACPI, WARNING: CPU: 1 PID: 538 at kernel/sched/core.c:7389 __might_sleep+0x7f/0x90() Date: Thu, 06 Aug 2015 11:57:05 +0200 Message-ID: <55C32F71.9070009@iogearbox.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from www62.your-server.de ([213.133.104.62]:35957 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753125AbbHFJ5H (ORCPT ); Thu, 6 Aug 2015 05:57:07 -0400 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Cc: rjw@rjwysocki.net This one seems to trigger during booting (I'm using net.git tree). Not sure if that is fixed already, if it is, sorry for the noise ... [...] [ 27.483399] EXT4-fs (dm-1): re-mounted. Opts: (null) [ 27.970316] systemd-udevd[528]: starting version 208 [ 29.250980] ACPI: SBS HC: EC = 0xffff880263f99a40, offset = 0x20, query_bit = 0x10 [ 29.468909] ------------[ cut here ]------------ [ 29.468920] WARNING: CPU: 1 PID: 538 at kernel/sched/core.c:7389 __might_sleep+0x7f/0x90() [ 29.468926] do not call blocking ops when !TASK_RUNNING; state=2 set at [] prepare_to_wait_event+0x63/0x100 [ 29.468929] Modules linked in: sbs(+) sbshc apple_bl nfsd auth_rpcgss nfs_acl lockd grace sunrpc i915 i2c_algo_bit drm_kms_helper drm i2c_core video [ 29.468954] CPU: 1 PID: 538 Comm: systemd-udevd Not tainted 4.2.0-rc4+ #115 [ 29.468956] Hardware name: Apple Inc. MacBookAir5,1/Mac-66F35F19FE2A0D05, BIOS MBA51.88Z.00EF.B02.1211271028 11/27/2012 [ 29.468959] ffffffff81c53c73 ffff88008203f848 ffffffff817ef504 0000000000000000 [ 29.468965] ffff88008203f898 ffff88008203f888 ffffffff8109e11a 0000000000000001 [ 29.468970] ffffffff81c54cd4 0000000000000268 0000000000000000 ffff88025b973580 [ 29.468975] Call Trace: [ 29.468981] [] dump_stack+0x4c/0x65 [ 29.468985] [] warn_slowpath_common+0x8a/0xc0 [ 29.468989] [] warn_slowpath_fmt+0x46/0x50 [ 29.468993] [] ? prepare_to_wait_event+0x63/0x100 [ 29.468996] [] ? prepare_to_wait_event+0x63/0x100 [ 29.469000] [] __might_sleep+0x7f/0x90 [ 29.469005] [] mutex_lock_nested+0x38/0x3d0 [ 29.469010] [] ? trace_hardirqs_on+0xd/0x10 [ 29.469015] [] acpi_ec_transaction+0x74/0x335 [ 29.469019] [] acpi_ec_read+0x4d/0x59 [ 29.469024] [] ec_read+0x2d/0x45 [ 29.469027] [] ? prepare_to_wait_event+0x95/0x100 [ 29.469032] [] smb_check_done+0x22/0x32 [sbshc] [ 29.469037] [] acpi_smbus_transaction+0x1b0/0x28b [sbshc] [ 29.469041] [] ? prepare_to_wait_event+0x100/0x100 [ 29.469045] [] acpi_smbus_read+0x1b/0x1d [sbshc] [ 29.469050] [] acpi_ac_get_present+0x2d/0x62 [sbs] [ 29.469055] [] acpi_sbs_add+0xb3/0x1f8 [sbs] [ 29.469059] [] acpi_device_probe+0x4b/0xf9 [ 29.469064] [] driver_probe_device+0x1ef/0x440 [ 29.469068] [] __driver_attach+0x94/0xa0 [ 29.469072] [] ? driver_probe_device+0x440/0x440 [ 29.469077] [] bus_for_each_dev+0x64/0xa0 [ 29.469080] [] driver_attach+0x1e/0x20 [ 29.469085] [] bus_add_driver+0x1d3/0x290 [ 29.469088] [] ? 0xffffffffa029a000 [ 29.469091] [] driver_register+0x60/0xe0 [ 29.469096] [] acpi_bus_register_driver+0x3b/0x43 [ 29.469100] [] acpi_sbs_init+0x19/0x1000 [sbs] [ 29.469105] [] do_one_initcall+0xad/0x1e0 [ 29.469109] [] ? do_init_module+0x28/0x1ec [ 29.469114] [] do_init_module+0x61/0x1ec [ 29.469118] [] load_module+0x1e23/0x27d0 [ 29.469122] [] ? m_show+0x190/0x190 [ 29.469128] [] SyS_finit_module+0x80/0xb0 [ 29.469133] [] entry_SYSCALL_64_fastpath+0x12/0x76 [ 29.469136] ---[ end trace 316ff42163c9d52b ]--- [ 29.499775] random: nonblocking pool is initialized [...]