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From: andrew hendry on 30 May 2010 04:10
I get 6 of these logged together about 1 minute after startup on an i7-860.
Config attached. Distro is Ubuntu 10.04 64 bit.
Is this one known or should I start a bisect?

[ 64.924201] BUG: using smp_processor_id() in preemptible [00000000]
code: ondemand/1327
[ 64.924625] caller is nr_iowait_cpu+0x1a/0x40
[ 64.924627] Pid: 1327, comm: ondemand Not tainted 2.6.34 #2
[ 64.924629] Call Trace:
[ 64.924634] [<ffffffff81288548>] debug_smp_processor_id+0xd8/0xf0
[ 64.924637] [<ffffffff81042c7a>] nr_iowait_cpu+0x1a/0x40
[ 64.924641] [<ffffffff81089f42>] update_ts_time_stats+0x72/0x90
[ 64.924645] [<ffffffff81012759>] ? read_tsc+0x9/0x20
[ 64.924647] [<ffffffff81084733>] ? ktime_get+0x63/0xe0
[ 64.924650] [<ffffffff8108a162>] get_cpu_idle_time_us+0x52/0x80
[ 64.924654] [<ffffffff8140a44c>] cpufreq_governor_dbs+0x1dc/0x430
[ 64.924657] [<ffffffff81407af5>] __cpufreq_governor+0xc5/0x190
[ 64.924660] [<ffffffff81407552>] ? lock_policy_rwsem_write+0x52/0x90
[ 64.924662] [<ffffffff81407d07>] __cpufreq_set_policy+0x147/0x190
[ 64.924665] [<ffffffff81408125>] store_scaling_governor+0xe5/0x210
[ 64.924667] [<ffffffff81408480>] ? handle_update+0x0/0x20
[ 64.924672] [<ffffffff8151dc00>] ? _raw_write_unlock_irq+0x40/0x50
[ 64.924675] [<ffffffff814075f7>] store+0x67/0xa0
[ 64.924679] [<ffffffff811a1375>] sysfs_write_file+0xe5/0x170
[ 64.924682] [<ffffffff8113b088>] vfs_write+0xb8/0x180
[ 64.924685] [<ffffffff8113b231>] sys_write+0x51/0x90
[ 64.924689] [<ffffffff8100b0f2>] system_call_fastpath+0x16/0x1b
From: andrew hendry on 30 May 2010 04:40
Running hdparm -tT /dev/sda gets a similar one.

[ 2705.519946] BUG: using smp_processor_id() in preemptible [00000000]
code: hdparm/2479
[ 2705.519948] caller is vfs_quota_sync+0x18c/0x350
[ 2705.519950] Pid: 2479, comm: hdparm Not tainted 2.6.34 #2
[ 2705.519951] Call Trace:
[ 2705.519953] [<ffffffff81288548>] debug_smp_processor_id+0xd8/0xf0
[ 2705.519956] [<ffffffff8118d21c>] vfs_quota_sync+0x18c/0x350
[ 2705.519958] [<ffffffff811621c0>] ? sync_one_sb+0x0/0x30
[ 2705.519960] [<ffffffff811621c0>] ? sync_one_sb+0x0/0x30
[ 2705.519962] [<ffffffff81162161>] __sync_filesystem+0x41/0xa0
[ 2705.519964] [<ffffffff811621e0>] sync_one_sb+0x20/0x30
[ 2705.519966] [<ffffffff8113cd54>] iterate_supers+0x84/0xd0
[ 2705.519969] [<ffffffff8116221f>] sys_sync+0x2f/0x70
[ 2705.519971] [<ffffffff8100b0f2>] system_call_fastpath+0x16/0x1b

On Sun, May 30, 2010 at 6:02 PM, andrew hendry <andrew.hendry(a)gmail.com> wrote:
> I get 6 of these logged together about 1 minute after startup on an i7-860.
> Config attached. Distro is Ubuntu 10.04 64 bit.
> Is this one known or should I start a bisect?
>
> [ � 64.924201] BUG: using smp_processor_id() in preemptible [00000000]
> code: ondemand/1327
> [ � 64.924625] caller is nr_iowait_cpu+0x1a/0x40
> [ � 64.924627] Pid: 1327, comm: ondemand Not tainted 2.6.34 #2
> [ � 64.924629] Call Trace:
> [ � 64.924634] �[<ffffffff81288548>] debug_smp_processor_id+0xd8/0xf0
> [ � 64.924637] �[<ffffffff81042c7a>] nr_iowait_cpu+0x1a/0x40
> [ � 64.924641] �[<ffffffff81089f42>] update_ts_time_stats+0x72/0x90
> [ � 64.924645] �[<ffffffff81012759>] ? read_tsc+0x9/0x20
> [ � 64.924647] �[<ffffffff81084733>] ? ktime_get+0x63/0xe0
> [ � 64.924650] �[<ffffffff8108a162>] get_cpu_idle_time_us+0x52/0x80
> [ � 64.924654] �[<ffffffff8140a44c>] cpufreq_governor_dbs+0x1dc/0x430
> [ � 64.924657] �[<ffffffff81407af5>] __cpufreq_governor+0xc5/0x190
> [ � 64.924660] �[<ffffffff81407552>] ? lock_policy_rwsem_write+0x52/0x90
> [ � 64.924662] �[<ffffffff81407d07>] __cpufreq_set_policy+0x147/0x190
> [ � 64.924665] �[<ffffffff81408125>] store_scaling_governor+0xe5/0x210
> [ � 64.924667] �[<ffffffff81408480>] ? handle_update+0x0/0x20
> [ � 64.924672] �[<ffffffff8151dc00>] ? _raw_write_unlock_irq+0x40/0x50
> [ � 64.924675] �[<ffffffff814075f7>] store+0x67/0xa0
> [ � 64.924679] �[<ffffffff811a1375>] sysfs_write_file+0xe5/0x170
> [ � 64.924682] �[<ffffffff8113b088>] vfs_write+0xb8/0x180
> [ � 64.924685] �[<ffffffff8113b231>] sys_write+0x51/0x90
> [ � 64.924689] �[<ffffffff8100b0f2>] system_call_fastpath+0x16/0x1b
>
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