linux-kernel - Spew in dmesg (BUG: using smp_processor

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Message-ID: <20100607070438.GA2755@core.coreip.homeip.net>
Date:	Mon, 7 Jun 2010 00:04:38 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: Spew in dmesg (BUG: using smp_processor_id() in preemptible code)

Hi,

Go tthe following trying to boot the today's pull from Linus:

BUG: using smp_processor_id() in preemptible [00000000] code:
S13cpuspeed/884
caller is nr_iowait_cpu+0x15/0x30
Pid: 884, comm: S13cpuspeed Tainted: P           2.6.35-rc0 #286
Call Trace:
 [<ffffffff81246484>] debug_smp_processor_id+0xd4/0xf0
 [<ffffffff81031635>] nr_iowait_cpu+0x15/0x30
 [<ffffffff8107acea>] update_ts_time_stats+0x6a/0x90
 [<ffffffff8107531b>] ? ktime_get+0x5b/0xe0
 [<ffffffff8107ae9f>] get_cpu_idle_time_us+0x4f/0x70
 [<ffffffff813a8bcc>] cpufreq_governor_dbs+0x20c/0x490
 [<ffffffff813a6ccd>] __cpufreq_governor+0xdd/0x1a0
 [<ffffffff813a58ed>] ? lock_policy_rwsem_write+0x4d/0x90
 [<ffffffff813a6f5f>] __cpufreq_set_policy+0x1cf/0x250
 [<ffffffff813a72e7>] store_scaling_governor+0xa7/0xd0
 [<ffffffff813a7580>] ? handle_update+0x0/0x40
 [<ffffffff8148d87d>] ? _raw_spin_unlock_irqrestore+0x3d/0x70
 [<ffffffff813a6a52>] store+0x62/0x90
 [<ffffffff81189a9e>] sysfs_write_file+0x9e/0xf0
 [<ffffffff81122df8>] vfs_write+0xb8/0x1a0
 [<ffffffff810ac6f2>] ? audit_syscall_entry+0x282/0x2b0
 [<ffffffff8112381c>] sys_write+0x4c/0x80
 [<ffffffff81002f6b>] system_call_fastpath+0x16/0x1b

The tainit is coming from nvidia module.

Thanks.

-- 
Dmitry
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