kernel version : 2.6.31-rc1 + acpi battery oops patch
[ 16.551406] ------------[ cut here ]------------
[ 16.551410] WARNING: at fs/sysfs/group.c:138 sysfs_remove_group+0x4d/0xc6()
[ 16.551413] Hardware name: Latitude D630
[ 16.551416] sysfs group ffffffffa02b4d40 not found for kobject 'cpu0'
[ 16.551418] Modules linked in: microcode(-) snd_hda_codec_idt
snd_hda_intel snd_hda_codec snd_hwdep snd_seq_device snd_pcm_oss
snd_mixer_oss snd_pcm snd_timer i2c_i801 i2c_core ohci1394 ieee1394
usbhid iwl3945 tg3 iwlcore mac80211 sg cfg80211 libphy snd
snd_page_alloc processor battery button ac thermal sr_mod cdrom evdev
dcdbas ata_generic ata_piix libata sd_mod scsi_mod ext3 jbd mbcache
uhci_hcd ohci_hcd ehci_hcd usbcore [last unloaded: scsi_wait_scan]
[ 16.551481] Pid: 3167, comm: rmmod Not tainted 2.6.30-rc1-dirty #89
[ 16.551484] Call Trace:
[ 16.551491] [<ffffffff802404d1>] warn_slowpath+0xb1/0xed
[ 16.551497] [<ffffffff80262b6a>] ? get_lock_stats+0x14/0x4c
[ 16.551503] [<ffffffff80485b02>] ? mutex_unlock+0x9/0xb
[ 16.551508] [<ffffffff802644bf>] ? mark_held_locks+0x4d/0x6b
[ 16.551512] [<ffffffff80485acd>] ? __mutex_unlock_slowpath+0x124/0x150
[ 16.551517] [<ffffffff8026479f>] ? trace_hardirqs_on_caller+0x139/0x164
[ 16.551521] [<ffffffff802647d7>] ? trace_hardirqs_on+0xd/0xf
[ 16.551527] [<ffffffff80319cd5>] sysfs_remove_group+0x4d/0xc6
[ 16.551534] [<ffffffffa02b2414>] mc_sysdev_remove+0x4f/0x68 [microcode]
[ 16.551540] [<ffffffff803cd9e2>] sysdev_driver_unregister+0x5b/0x94
[ 16.551546] [<ffffffffa02b2eab>] microcode_exit+0x34/0x60 [microcode]
[ 16.551551] [<ffffffff8026f2b6>] sys_delete_module+0x1ca/0x245
[ 16.551556] [<ffffffff8026479f>] ? trace_hardirqs_on_caller+0x139/0x164
[ 16.551561] [<ffffffff80487a3d>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[ 16.551566] [<ffffffff8020b142>] system_call_fastpath+0x16/0x1b
[ 16.551570] ---[ end trace 562a06720ccbbb65 ]---
[ 16.551576] ------------[ cut here ]------------
[ 16.551579] WARNING: at fs/sysfs/group.c:138 sysfs_remove_group+0x4d/0xc6()
[ 16.551582] Hardware name: Latitude D630
[ 16.551585] sysfs group ffffffffa02b4d40 not found for kobject 'cpu1'
[ 16.551587] Modules linked in: microcode(-) snd_hda_codec_idt
snd_hda_intel snd_hda_codec snd_hwdep snd_seq_device snd_pcm_oss
snd_mixer_oss snd_pcm snd_timer i2c_i801 i2c_core ohci1394 ieee1394
usbhid iwl3945 tg3 iwlcore mac80211 sg cfg80211 libphy snd
snd_page_alloc processor battery button ac thermal sr_mod cdrom evdev
dcdbas ata_generic ata_piix libata sd_mod scsi_mod ext3 jbd mbcache
uhci_hcd ohci_hcd ehci_hcd usbcore [last unloaded: scsi_wait_scan]
[ 16.551646] Pid: 3167, comm: rmmod Tainted: G W 2.6.30-rc1-dirty #89
[ 16.551648] Call Trace:
[ 16.551653] [<ffffffff802404d1>] warn_slowpath+0xb1/0xed
[ 16.551658] [<ffffffff804863a9>] ? mutex_lock_nested+0x308/0x362
[ 16.551663] [<ffffffff80485a18>] ? __mutex_unlock_slowpath+0x6f/0x150
[ 16.551668] [<ffffffff8026368c>] ? trace_hardirqs_off+0xd/0xf
[ 16.551672] [<ffffffff80485acd>] ? __mutex_unlock_slowpath+0x124/0x150
[ 16.551677] [<ffffffff80264685>] ? trace_hardirqs_on_caller+0x1f/0x164
[ 16.551681] [<ffffffff802647d7>] ? trace_hardirqs_on+0xd/0xf
[ 16.551686] [<ffffffff80319cd5>] sysfs_remove_group+0x4d/0xc6
[ 16.551692] [<ffffffffa02b2414>] mc_sysdev_remove+0x4f/0x68 [microcode]
[ 16.551697] [<ffffffff803cd9e2>] sysdev_driver_unregister+0x5b/0x94
[ 16.551703] [<ffffffffa02b2eab>] microcode_exit+0x34/0x60 [microcode]
[ 16.551707] [<ffffffff8026f2b6>] sys_delete_module+0x1ca/0x245
[ 16.551712] [<ffffffff8026479f>] ? trace_hardirqs_on_caller+0x139/0x164
[ 16.551717] [<ffffffff80487a3d>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[ 16.551722] [<ffffffff8020b142>] system_call_fastpath+0x16/0x1b
[ 16.551725] ---[ end trace 562a06720ccbbb66 ]---
[ 16.551730] PM: Removing info for platform:microcode
[ 16.551974] bus: 'platform': remove device microcode
[ 16.553880] Microcode Update Driver: v2.00 removed.
--
Lei Ming