I noticed a thread about:

cat /sys/devices/system/cpu/cpuidle/current_driver

so I decided to see if this happens to me as well.

sure enough the first try gave me no response the

second try gave me a segfault <below is in dmesg>
[  292.680190] BUG: unable to handle kernel paging request at 72890e19

[  292.680201] IP: [<c02ebd1f>] show_current_driver+0x5/0x4c

[  292.680215] *pde = 00000000

[  292.680221] Oops: 0000 [#1] SMP

[  292.680229] Modules linked in: hci_usb cpufreq_ondemand

cpufreq_performance cpufreq_powersave rfcomm hidp l2cap bluetooth fan

battery ipmi_watchdog ipmi_msghandler uvcvideo uinput wlan_tkip

ieee80211_crypt_tkip ieee80211 ieee80211_crypt arpt_mangle

arptable_filter arp_tables nf_conntrack_ipv4 nf_conntrack

iptable_mangle iptable_filter ip_tables x_tables coretemp eeprom

acpi_cpufreq applesmc wlan_scan_sta ath_rate_sample firewire_ohci

firewire_core joydev isight_firmware snd_hda_intel ath_pci wlan

fglrx(P) ohci1394 appletouch snd_pcm ieee1394 ath_hal(P) video ac

snd_timer ehci_hcd pata_acpi thermal agpgart evdev uhci_hcd

snd_page_alloc snd_hwdep processor sbshc button

[  292.680335]

[  292.680341] Pid: 3645, comm: cat Tainted: P

(2.6.27-rc1-00156-g94ad374 #5)

[  292.680346] EIP: 0060:[<c02ebd1f>] EFLAGS: 00210282 CPU: 0

[  292.680353] EIP is at show_current_driver+0x5/0x4c

[  292.680358] EAX: f44ae7f4 EBX: c01a982c ECX: 0804e000 EDX: 00001000

[  292.680362] ESI: f44ae7e0 EDI: c04e0728 EBP: c04e0728 ESP: f1ecff64

[  292.680367]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068

[  292.680372] Process cat (pid: 3645, ti=f1ece000 task=f1edc4e0

task.ti=f1ece000)

[  292.680377] Stack: c04e0a90 f1e0fd00 0804e000 c01a97a1 f1ecff90

c0175721 f1ecff9c 00001000

[  292.680392]        f1e0fd00 fffffff7 0804e000 f1ecffb0 c0175a14

f1ecff9c 00000000 00000000

[  292.680406]        00000000 00000003 00001000 f1ece000 c0102f9a

00000003 0804e000 00001000

[  292.680421] Call Trace:

[  292.680425]  [<c01a97a1>] ? sysfs_read_file+0x0/0xe8

[  292.680436]  [&l...
[ message continues ]

Thanks for the report.  Could you please try this patch posted in the

original thread?
  http://lkml.org/lkml/2008/8/5/314
Rabin

--

Sure, I'll give that patch a try.

just to let you know, it my take some time,

(doing some external activities).

I'll let you know.

regards;
--

Justin P. Mattock

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