WARNING: at drivers/ata/libata-eh.c:805 ata_port_freeze()
Pid: 13, comm: kacpi_notify Not tainted 2.6.24.3-devel-default #4
 [<f8bb4a78>] ata_port_freeze+0x39/0x51 [libata]
 [<f8bb7935>] ata_acpi_handle_hotplug+0x92/0x1c9 [libata]
 [<f8bb7a6c>] ata_acpi_dev_notify+0x0/0xd [libata]
 [<f8842169>] hotplug_dock_devices+0x37/0xe8 [dock]
 [<c01fc468>] acpi_os_execute_notify+0x0/0x2b
 [<c01fc468>] acpi_os_execute_notify+0x0/0x2b
 [<f884245c>] dock_notify+0x7e/0xde [dock]
 [<c02039d3>] acpi_ev_notify_dispatch+0x4c/0x55
 [<c01fc48a>] acpi_os_execute_notify+0x22/0x2b
 [<c0132cf6>] run_workqueue+0x7d/0x107
 [<c0132e3e>] worker_thread+0xbe/0xca
 [<c01361e3>] autoremove_wake_function+0x0/0x35
 [<c0132d80>] worker_thread+0x0/0xca
 [<c0135f5d>] kthread+0x38/0x5d
 [<c0135f25>] kthread+0x0/0x5d
 [<c01062c7>] kernel_thread_helper+0x7/0x10
 =======================
WARNING: at drivers/ata/libata-eh.c:704 ata_do_link_abort()
Pid: 13, comm: kacpi_notify Not tainted 2.6.24.3-devel-default #4
 [<f8bb49c0>] ata_do_link_abort+0x3f/0xb7 [libata]
 [<f8bb4a7f>] ata_port_freeze+0x40/0x51 [libata]
 [<f8bb7935>] ata_acpi_handle_hotplug+0x92/0x1c9 [libata]
 [<f8bb7a6c>] ata_acpi_dev_notify+0x0/0xd [libata]
 [<f8842169>] hotplug_dock_devices+0x37/0xe8 [dock]
 [<c01fc468>] acpi_os_execute_notify+0x0/0x2b
 [<c01fc468>] acpi_os_execute_notify+0x0/0x2b
 [<f884245c>] dock_notify+0x7e/0xde [dock]
 [<c02039d3>] acpi_ev_notify_dispatch+0x4c/0x55
 [<c01fc48a>] acpi_os_execute_notify+0x22/0x2b
 [<c0132cf6>] run_workqueue+0x7d/0x107
 [<c0132e3e>] worker_thread+0xbe/0xca
 [<c01361e3>] autoremove_wake_function+0x0/0x35
 [<c0132d80>] worker_thread+0x0/0xca
 [<c0135f5d>] kthread+0x38/0x5d
 [<c0135f25>] kthread+0x0/0x5d
 [<c01062c7>] kernel_thread_helper+0x7/0x10
 =======================
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000004
printing eip: f8ba84ec *pde = 00000000 
Oops: 0000 [#1] SMP 
Modules linked in: snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device iptable_filter ip_tables ip6table_filter ip6_tables x_tables ipv6 af_packet cpufreq_conservative cpufreq_userspace cpufreq_powersave acpi_cpufreq speedstep_lib fuse dm_crypt ext3 jbd mbcache loop dm_mod arc4 ecb blkcipher snd_hda_intel pcmcia snd_pcm iwl3945 thinkpad_acpi sdhci snd_timer yenta_socket ohci1394 hwmon firmware_class mmc_core snd_page_alloc rsrc_nonstatic snd_hwdep video ieee1394 parport_pc mac80211 pcmcia_core battery output snd rtc_cmos ac button nvram iTCO_wdt parport e1000 rtc_core intel_agp rtc_lib i2c_i801 iTCO_vendor_support soundcore agpgart cfg80211 sg i2c_core ehci_hcd uhci_hcd sd_mod usbcore edd reiserfs fan thermal processor piix ide_core sr_mod cdrom ata_piix ahci libata scsi_mod dock

Pid: 13, comm: kacpi_notify Not tainted (2.6.24.3-devel-default #4)
EIP: 0060:[<f8ba84ec>] EFLAGS: 00010082 CPU: 1
EIP is at ata_qc_complete+0xb/0x12a [libata]
EAX: f7fb6c7c EBX: f7fb6c7c ECX: f7fb6c00 EDX: f7fb6c7c
ESI: 00000000 EDI: 00000000 EBP: f7fb6c00 ESP: f7cc3e98
 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process kacpi_notify (pid: 13, ti=f7cc2000 task=f7c72670 task.ti=f7cc2000)
Stack: 0000000d f7c72861 c03ef3dc c036a3ea f7fb6c00 00000000 00000001 f7fb6c00 
       f8bb4a17 f8bba104 f8bba0ec 000002c0 f8bb86c4 00000000 f7fb6c00 f7fb6c00 
       00000000 f7408000 f8bb4a7f f8bba104 f8bba0ec 00000325 f8bb86b4 f7fb6c00 
Call Trace:
 [<f8bb4a17>] ata_do_link_abort+0x96/0xb7 [libata]
 [<f8bb4a7f>] ata_port_freeze+0x40/0x51 [libata]
 [<f8bb7935>] ata_acpi_handle_hotplug+0x92/0x1c9 [libata]
 [<f8bb7a6c>] ata_acpi_dev_notify+0x0/0xd [libata]
 [<f8842169>] hotplug_dock_devices+0x37/0xe8 [dock]
 [<c01fc468>] acpi_os_execute_notify+0x0/0x2b
 [<c01fc468>] acpi_os_execute_notify+0x0/0x2b
 [<f884245c>] dock_notify+0x7e/0xde [dock]
 [<c02039d3>] acpi_ev_notify_dispatch+0x4c/0x55
 [<c01fc48a>] acpi_os_execute_notify+0x22/0x2b
 [<c0132cf6>] run_workqueue+0x7d/0x107
 [<c0132e3e>] worker_thread+0xbe/0xca
 [<c01361e3>] autoremove_wake_function+0x0/0x35
 [<c0132d80>] worker_thread+0x0/0xca
 [<c0135f5d>] kthread+0x38/0x5d
 [<c0135f25>] kthread+0x0/0x5d
 [<c01062c7>] kernel_thread_helper+0x7/0x10
 =======================
Code: b8 fe ff ff ff 83 63 34 fe d3 c0 21 86 80 16 00 00 89 d8 ff 93 a4 00 00 00 83 c4 10 5b 5e 5f c3 55 57 56 53 89 c3 83 ec 10 8b 38 <8b> 47 04 83 78 64 00 0f 84 ce 00 00 00 8b 73 04 f6 47 10 04 8b 
EIP: [<f8ba84ec>] ata_qc_complete+0xb/0x12a [libata] SS:ESP 0068:f7cc3e98
---[ end trace aa89e4d71e841cf2 ]---