Description of problem:
When I reboot my laptop (acer 5740, i3), cpuspeed causes a kernel backtrace to be printed. The message below was acquired by doing a /etc/init.d/cpuspeed stop and then copying the information from dmesg.

=============================================
[ INFO: possible recursive locking detected ]
2.6.33.1-19.fc13.x86_64 #1
---------------------------------------------
cpuspeed/2884 is trying to acquire lock:
 (s_active){++++.+}, at: [<ffffffff81177332>] sysfs_addrm_finish+0x36/0x55

but task is already holding lock:
 (s_active){++++.+}, at: [<ffffffff811774ee>] sysfs_get_active_two+0x24/0x48

other info that might help us debug this:
4 locks held by cpuspeed/2884:
 #0:  (&buffer->mutex){+.+.+.}, at: [<ffffffff81175edb>] sysfs_write_file+0x3c/0x144
 #1:  (s_active){++++.+}, at: [<ffffffff811774ee>] sysfs_get_active_two+0x24/0x48
 #2:  (s_active){++++.+}, at: [<ffffffff811774fb>] sysfs_get_active_two+0x31/0x48
 #3:  (dbs_mutex){+.+.+.}, at: [<ffffffffa03cada2>] cpufreq_governor_dbs+0x2a0/0x352 [cpufreq_ondemand]

stack backtrace:
Pid: 2884, comm: cpuspeed Not tainted 2.6.33.1-19.fc13.x86_64 #1
Call Trace:
 [<ffffffff8107e96b>] __lock_acquire+0xcb5/0xd2c
 [<ffffffff8107cf64>] ? mark_held_locks+0x52/0x70
 [<ffffffff8107d345>] ? debug_check_no_locks_freed+0x12e/0x145
 [<ffffffff8107d1e4>] ? trace_hardirqs_on_caller+0x111/0x135
 [<ffffffff8107eabe>] lock_acquire+0xdc/0x102
 [<ffffffff81177332>] ? sysfs_addrm_finish+0x36/0x55
 [<ffffffff8107c31c>] ? lockdep_init_map+0x9e/0x113
 [<ffffffff81176b02>] sysfs_deactivate+0x9a/0x103
 [<ffffffff81177332>] ? sysfs_addrm_finish+0x36/0x55
 [<ffffffff810711a7>] ? sched_clock_cpu+0x44/0xce
 [<ffffffff8147748c>] ? __mutex_unlock_slowpath+0x120/0x132
 [<ffffffff81177332>] sysfs_addrm_finish+0x36/0x55
 [<ffffffff81175590>] sysfs_hash_and_remove+0x53/0x6a
 [<ffffffff81178729>] sysfs_remove_group+0x91/0xca
 [<ffffffffa03cadb6>] cpufreq_governor_dbs+0x2b4/0x352 [cpufreq_ondemand]
 [<ffffffff8107d215>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff813a2e37>] __cpufreq_governor+0x9b/0xde
 [<ffffffff813a3c83>] __cpufreq_set_policy+0x1ce/0x275
 [<ffffffff813a41a7>] store_scaling_governor+0x1a7/0x1fb
 [<ffffffff813a44b0>] ? handle_update+0x0/0x39
 [<ffffffff81477da7>] ? down_write+0x7a/0x81
 [<ffffffff813a3a90>] store+0x61/0x86
 [<ffffffff81175fa7>] sysfs_write_file+0x108/0x144
 [<ffffffff8111f0e5>] vfs_write+0xae/0x10b
 [<ffffffff8107d1e4>] ? trace_hardirqs_on_caller+0x111/0x135
 [<ffffffff8111f202>] sys_write+0x4a/0x6e
 [<ffffffff81009c72>] system_call_fastpath+0x16/0x1b


Version-Release number of selected component (if applicable):
[root@i3 ~]# uname -a
Linux i3.sarin.net.in 2.6.33.1-19.fc13.x86_64 #1 SMP Sat Mar 20 02:14:15 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
[root@i3 ~]# rpm -q cpuspeed
cpuspeed-1.5-13.fc13.x86_64


How reproducible:
/etc/init.d cpuspeed stop

Steps to Reproduce:
1. Boot the machine
2. Stop cpuspeed OR
3. Reboot the machine
  
Actual results:
During every reboot, the system prints a backtrace from kernel.

Expected results:
When the system is rebooted, it should do so without any error messages/warnings from kernel 

Additional info:
[root@i3 ~]# cat /proc/cpuinfo
<snip/>
processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 37
model name	: Intel(R) Core(TM) i3 CPU       M 330  @ 2.13GHz
stepping	: 2
cpu MHz		: 2133.000
cache size	: 3072 KB
<snip/>