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SubjectRe: 3.1.0+ (Linus GIT tree) - BUG: scheduling while atomic: cat/3303/0x00000102
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Thanks!  Your patch works on my machine.

Miles

On Sat, Oct 29, 2011 at 10:39 PM, Guy, Wey-Yi <wey-yi.w.guy@intel.com> wrote:
> Please try following patch
>
> thanks
> Wey
>
> On Sat, 2011-10-29 at 19:03 -0700, Miles Lane wrote:
>> iwlwifi 0000:03:00.0: Error sending POWER_TABLE_CMD: time out after 2000ms.
>> iwlwifi 0000:03:00.0: Current CMD queue read_ptr 150 write_ptr 151
>> iwlwifi 0000:03:00.0: set power fail, ret = -110
>> cfg80211: Calling CRDA to update world regulatory domainBUG:
>> scheduling while atomic: cat/3303/0x00000102
>> cfg80211: World regulatory domain updated:
>> cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
>> cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
>> cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
>> cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
>> cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
>> cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
>> iwlwifi 0000:03:00.0: Queue 4 stuck for 2000 ms.
>> iwlwifi 0000:03:00.0: Current read_ptr 150 write_ptr 151
>> ------------[ cut here ]------------
>> WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-tx.c:998
>> iwl_trans_pcie_send_cmd+0x34a/0x34f [iwlwifi]()
>> Hardware name: UL50VT
>> Modules linked in: snd_hrtimer rfcomm bnep bluetooth parport_pc
>> parport ipv6 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
>> snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm
>> snd_seq_dummy uvcvideo snd_seq_oss videodev v4l2_compat_ioctl32
>> snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer iwlwifi
>> snd_seq_device psmouse mac80211 snd cfg80211 soundcore snd_page_alloc
>> evdev battery asus_laptop sparse_keymap rfkill ac power_supply
>> processor sr_mod sg cdrom atl1c thermal
>> Pid: 3303, comm: cat Not tainted 3.1.0+ #20
>> Call Trace:
>>  <IRQ>  [<ffffffff81036974>] warn_slowpath_common+0x7e/0x96
>>  [<ffffffff810369a1>] warn_slowpath_null+0x15/0x17
>>  [<ffffffffa017f04c>] iwl_trans_pcie_send_cmd+0x34a/0x34f [iwlwifi]
>>  [<ffffffff812d0afe>] ? dev_err+0x4e/0x50
>>  [<ffffffffa0174dd1>] iwl_cmd_echo_test+0x35/0x65 [iwlwifi]
>>  [<ffffffffa0174e45>] iwl_check_stuck_queue+0x44/0x6c [iwlwifi]
>>  [<ffffffffa0174eb9>] iwl_bg_watchdog+0x4c/0xb8 [iwlwifi]
>>  [<ffffffff8104406b>] run_timer_softirq+0x227/0x35b
>>  [<ffffffff81043f8d>] ? run_timer_softirq+0x149/0x35b
>>  [<ffffffffa0174e6d>] ? iwl_check_stuck_queue+0x6c/0x6c [iwlwifi]
>>  [<ffffffff8103ca37>] __do_softirq+0x129/0x24c
>>  [<ffffffff814128ec>] call_softirq+0x1c/0x30
>>  [<ffffffff810030bd>] do_softirq+0x38/0x83
>>  [<ffffffff8103cdcb>] irq_exit+0x58/0xc8
>>  [<ffffffff81018894>] smp_apic_timer_interrupt+0x76/0x84
>>  [<ffffffff81411170>] apic_timer_interrupt+0x70/0x80
>>  <EOI>  [<ffffffff81404f89>] ? __slab_alloc.isra.62.constprop.72+0x208/0x21a
>>  [<ffffffff811c769c>] ? aa_alloc_task_context+0x2d/0x3b
>>  [<ffffffff810f6e01>] ? getname_flags+0x2c/0x1db
>>  [<ffffffff811c769c>] ? aa_alloc_task_context+0x2d/0x3b
>>  [<ffffffff810f6e01>] ? getname_flags+0x2c/0x1db
>>  [<ffffffff810f6e01>] ? getname_flags+0x2c/0x1db
>>  [<ffffffff810e8cd0>] kmem_cache_alloc+0x4f/0x136
>>  [<ffffffff810f6e01>] getname_flags+0x2c/0x1db
>>  [<ffffffff810f886e>] user_path_at+0x26/0x91
>>  [<ffffffff810e8e69>] ? kmem_cache_alloc_trace+0xb2/0xc4
>>  [<ffffffff811c7700>] ? aa_dup_task_context+0x22/0x4a
>>  [<ffffffff811cb568>] ? apparmor_cred_prepare+0x31/0x40
>>  [<ffffffff8105aefd>] ? get_cred+0x22/0x29
>>  [<ffffffff8105af76>] ? override_creds+0x72/0x87
>>  [<ffffffff810ec85a>] sys_faccessat+0xa0/0x182
>>  [<ffffffff811fe51e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
>>  [<ffffffff810ec94f>] sys_access+0x13/0x15
>>  [<ffffffff8141063b>] system_call_fastpath+0x16/0x1b
>> ---[ end trace 4974270bf412e95a ]---
>> BUG: scheduling while atomic: cat/3303/0x00000102
>> 1 lock held by cat/3303:
>>  #0:  (&priv->watchdog){+.-...}, at: [<ffffffff81043f8d>]
>> run_timer_softirq+0x149/0x35b
>> Modules linked in: snd_hrtimer rfcomm bnep bluetooth parport_pc
>> parport ipv6 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
>> snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm
>> snd_seq_dummy uvcvideo snd_seq_oss videodev v4l2_compat_ioctl32
>> snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer iwlwifi
>> snd_seq_device psmouse mac80211 snd cfg80211 soundcore snd_page_alloc
>> evdev battery asus_laptop sparse_keymap rfkill ac power_supply
>> processor sr_mod sg cdrom atl1c thermal
>> CPU 0
>> Modules linked in: snd_hrtimer rfcomm bnep bluetooth parport_pc
>> parport ipv6 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
>> snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm
>> snd_seq_dummy uvcvideo snd_seq_oss videodev v4l2_compat_ioctl32
>> snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer iwlwifi
>> snd_seq_device psmouse mac80211 snd cfg80211 soundcore snd_page_alloc
>> evdev battery asus_laptop sparse_keymap rfkill ac power_supply
>> processor sr_mod sg cdrom atl1c thermal
>> Pid: 3303, comm: cat Tainted: G        W   3.1.0+ #20 ASUSTeK Computer
>> Inc.         UL50VT              /UL50VT    Oct 29 19:35:03 localhost
>> kernel: [ 3785.923634] RIP: 0010:[<ffffffff81404f89>]
>> [<ffffffff81404f89>] __slab_alloc.isra.62.constprop.72+0x208/0x21a
>> RSP: 0018:ffff88011ed1bd18  EFLAGS: 00000296
>> RAX: ffff8801189e93a0 RBX: ffff88013709c600 RCX: 0000000000000000
>> RDX: 000000000000ab92 RSI: 0000000000000001 RDI: ffff8801189e93a0
>> RBP: ffff88011ed1bda8 R08: 0000000000000000 R09: 0000000000000000
>> R10: 0000000000000001 R11: 0000000000000001 R12: ffff88013709d610
>> R13: 0000000000000007 R14: 0000000100070001 R15: ffffffff810f6e01
>> FS:  0000000000000000(0000) GS:ffff88013fc00000(0000) knlGS:0000000000000000
>> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> CR2: 000000000060aed0 CR3: 000000011ed6f000 CR4: 00000000000406f0
>> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
>> Process cat (pid: 3303, threadinfo ffff88011ed1a000, task ffff8801189e93a0)
>> Stack:
>>  ffffffff811c769c 0000000100160013 0000000000000009 ffffffff810f6e01
>>  ffffffff811c769c ffff880112fe69d8 ffff88011ed1bd88 ffff8801189e93a0
>>  0000000000000246 0000000000000080 00000000000000d0 ffffffff810f6e01
>> Call Trace:
>>  [<ffffffff811c769c>] ? aa_alloc_task_context+0x2d/0x3b
>>  [<ffffffff810f6e01>] ? getname_flags+0x2c/0x1db
>>  [<ffffffff811c769c>] ? aa_alloc_task_context+0x2d/0x3b
>>  [<ffffffff810f6e01>] ? getname_flags+0x2c/0x1db
>>  [<ffffffff810f6e01>] ? getname_flags+0x2c/0x1db
>>  [<ffffffff810e8cd0>] kmem_cache_alloc+0x4f/0x136
>>  [<ffffffff810f6e01>] getname_flags+0x2c/0x1db
>>  [<ffffffff810f886e>] user_path_at+0x26/0x91
>>  [<ffffffff810e8e69>] ? kmem_cache_alloc_trace+0xb2/0xc4
>>  [<ffffffff811c7700>] ? aa_dup_task_context+0x22/0x4a
>>  [<ffffffff811cb568>] ? apparmor_cred_prepare+0x31/0x40
>>  [<ffffffff8105aefd>] ? get_cred+0x22/0x29
>>  [<ffffffff8105af76>] ? override_creds+0x72/0x87
>>  [<ffffffff810ec85a>] sys_faccessat+0xa0/0x182
>>  [<ffffffff811fe51e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
>>  [<ffffffff810ec94f>] sys_access+0x13/0x15
>>  [<ffffffff8141063b>] system_call_fastpath+0x16/0x1b
>> Code: 00 48 89 03 e8 0f 3a ce ff c7 43 20 ff ff ff ff 41 f7 c6 00 02
>> 00 00 75 0a 41 56 9d e8 9f 07 c6 ff eb 08 e8 bb 20 c6 ff 41 56 9d
>> Call Trace:
>>  [<ffffffff811c769c>] ? aa_alloc_task_context+0x2d/0x3b
>>  [<ffffffff810f6e01>] ? getname_flags+0x2c/0x1db
>>  [<ffffffff811c769c>] ? aa_alloc_task_context+0x2d/0x3b
>>  [<ffffffff810f6e01>] ? getname_flags+0x2c/0x1db
>>  [<ffffffff810f6e01>] ? getname_flags+0x2c/0x1db
>>  [<ffffffff810e8cd0>] kmem_cache_alloc+0x4f/0x136
>>  [<ffffffff810f6e01>] getname_flags+0x2c/0x1db
>>  [<ffffffff810f886e>] user_path_at+0x26/0x91
>>  [<ffffffff810e8e69>] ? kmem_cache_alloc_trace+0xb2/0xc4
>>  [<ffffffff811c7700>] ? aa_dup_task_context+0x22/0x4a
>>  [<ffffffff811cb568>] ? apparmor_cred_prepare+0x31/0x40
>>  [<ffffffff8105aefd>] ? get_cred+0x22/0x29
>>  [<ffffffff8105af76>] ? override_creds+0x72/0x87
>>  [<ffffffff810ec85a>] sys_faccessat+0xa0/0x182
>>  [<ffffffff811fe51e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
>>  [<ffffffff810ec94f>] sys_access+0x13/0x15
>>  [<ffffffff8141063b>] system_call_fastpath+0x16/0x1b
>> iwlwifi 0000:03:00.0: HCMD_ACTIVE already clear for command REPLY_ECHO
>
>
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