Regression 2.6.39-rc1 for sony-laptop

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Hi all,
   and thanks a lot for your time.
   We current git tree I've got this:
[   10.299221] sony-laptop: Sony Programmable IO Control Driver v0.6.
[   10.299237] sony-laptop: detected Type3 model
[   10.300885] input: Sony Vaio Keys as
/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:45/SNY6001:00/input/input3
[   10.301516] input: Sony Vaio Jogdial as /devices/virtual/input/input4
[   10.302366] sony-laptop: device allocated minor is 58
[   10.310838] sony-laptop: Sony Notebook Control Driver v0.6.
[   10.310940] BUG: unable to handle kernel NULL pointer dereference at   (null)
[   10.310996] IP: [<f816c0b0>] sony_find_snc_handle+0x10/0x70 [sony_laptop]
[   10.311023] *pde = 00000000
[   10.311023] Oops: 0000 [#1] PREEMPT SMP
[   10.311083] last sysfs file: /sys/bus/platform/drivers/sony-laptop/uevent
[   10.311083] Modules linked in: sony_laptop(+) psmouse loop
processor snd_hda_codec rfkill evdev i915 fbcon font bitblit
softcursor drm_kms_helper intel_agp cfbcopyarea video sky2 intel_gtt
thermal thermal_sys button uhci_hcd cfbimgblt cfbfillrect
[   10.311083] Pid: 1793, comm: modprobe Not tainted 2.6.39-rc1-test+
#1 Sony Corporation VGN-SZ1VP/VAIO
[   10.311083] EIP: 0060:[<f816c0b0>] EFLAGS: 00010296 CPU: 0
[   10.311083] EIP is at sony_find_snc_handle+0x10/0x70 [sony_laptop]
[   10.311083] EAX: 0000012f EBX: 00000000 ECX: 00000000 EDX: 00000286
[   10.311083] ESI: f47d9e78 EDI: f500b400 EBP: 00000000 ESP: f47d9e18
[   10.311083]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[   10.311083] Process modprobe (pid: 1793, ti=f47d8000 task=f4bc0e40
task.ti=f47d8000)
[   10.311083] Stack:
[   10.311083]  00000000 00000000 00000000 00000000 f816e694 f817126d
f8171250 f817124c
[   10.311083]  f4943460 0000447f f47d9e74 f5083bd0 f4935b10 00000000
c110ef27 c110decf
[   10.311083]  f47d9e90 f4935ae0 f47d9e90 c110e873 00000000 41ed9559
f44c34e0 f5083bd0
[   10.311083] Call Trace:
[   10.311083]  [<f816e694>] ? sony_nc_add+0x2a4/0x930 [sony_laptop]
[   10.311083]  [<c110ef27>] ? sysfs_do_create_link+0xb7/0x1d0
[   10.311083]  [<c110decf>] ? __sysfs_add_one+0x1f/0xf0
[   10.311083]  [<c110e873>] ? sysfs_addrm_finish+0x13/0xc0
[   10.311083]  [<c11e9862>] ? acpi_device_probe+0x37/0xec
[   10.311083]  [<c1247c97>] ? driver_probe_device+0x77/0x190
[   10.311083]  [<c11e9c58>] ? acpi_match_device_ids+0x27/0x49
[   10.311083]  [<c1247e29>] ? __driver_attach+0x79/0x80
[   10.311083]  [<c1247db0>] ? driver_probe_device+0x190/0x190
[   10.311083]  [<c1247522>] ? bus_for_each_dev+0x52/0x80
[   10.311083]  [<c1247b26>] ? driver_attach+0x16/0x20
[   10.311083]  [<c1247db0>] ? driver_probe_device+0x190/0x190
[   10.311083]  [<c1246f07>] ? bus_add_driver+0x177/0x240
[   10.311083]  [<c11e979f>] ? acpi_device_hid+0x14/0x14
[   10.311083]  [<c12483b3>] ? driver_register+0x63/0x120
[   10.311083]  [<f827104d>] ? sony_laptop_init+0x4d/0x1000 [sony_laptop]
[   10.311083]  [<c1001123>] ? do_one_initcall+0x33/0x170
[   10.311083]  [<f8271000>] ? 0xf8270fff
[   10.311083]  [<c1065b49>] ? sys_init_module+0xe9/0x350
[   10.311083]  [<c10c1b51>] ? sys_write+0x41/0x80
[   10.311083]  [<c137a110>] ? sysenter_do_call+0x12/0x26
[   10.311083] Code: 2c 17 f8 5b 3b 15 28 2c 17 f8 ba 41 00 00 00 0f
45 c2 c3 90 8d b4 26 00 00 00 00 53 31 db 83 ec 0c 8b 0d dc 2c 17 f8
8d 74 26 00 <0f> b7 14 59 39 c2 74 20 43 83 fb 10 75 f2 8b 15 a8 2c 17
f8 85
[   10.311083] EIP: [<f816c0b0>] sony_find_snc_handle+0x10/0x70
[sony_laptop] SS:ESP 0068:f47d9e18
[   10.311083] CR2: 0000000000000000
[   10.354377] ---[ end trace 1c42dff203c3e1bc ]---

Git bisect blames this commit:

commit 9af0e0fb70ed8e2387323c19496a7e174363f7b6
Author: Anssi Hannula <anssi.hannula@xxxxxx>
Date:   Sun Feb 20 20:07:20 2011 +0200

    hp-wmi: check query return value in hp_wmi_perform_query

    Check BIOS provided return value code in hp_wmi_perform_query and print
    a warning on error. Printing is suppressed for HPWMI_RET_UNKNOWN_CMDTYPE
    which is returned when the command type is unsupported.

    Signed-off-by: Anssi Hannula <anssi.hannula@xxxxxx>
    Signed-off-by: Matthew Garrett <mjg@xxxxxxxxxx>

 drivers/platform/x86/hp-wmi.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

In attachment other info.
If you need more details, please tell me.

Thanks a lot for your time,
Andrea

Attachment: config.bz2
Description: BZip2 compressed data

Attachment: dmesg.txt.bz2
Description: BZip2 compressed data

Attachment: dmidecode.txt.bz2
Description: BZip2 compressed data


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