WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465 iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()

WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465 iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()

[Mohammed Shafi]

Hi,

got this following warning  for the following card, it was my inbuilt
card it was just associated with an AP, wireless-testing 3.3.0-rc4-wl

03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN
[Shiloh] Network Connection
        Subsystem: Intel Corporation Device 1211
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 48
        Region 0: Memory at f4300000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: <access denied>
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi
00: 86 80 37 42 06 01 10 00 00 00 80 02 10 00 00 00
10: 04 00 30 f4 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 86 80 11 12
30: 00 00 00 00 c8 00 00 00 00 00 00 00 0b 01 00 00

24] ------------[ cut here ]------------
[11056.342672] WARNING: at
drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465
iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()
[11056.342681] Hardware name: 64756D6
[11056.342687] reclaim is false, SEQ_RX_FRAME unset: STATISTICS_NOTIFICATION
[11056.342693] Modules linked in: aes_i586 aes_generic rfcomm bridge
stp bnep ath9k(O) ath9k_common(O) ath9k_hw(O) ath3k ath btusb
bluetooth binfmt_misc ppde
v arc4 iwlwifi snd_hda_codec_conexant mac80211 i915 snd_hda_intel
snd_hda_codec fbcon tileblit snd_hwdep snd_pcm_oss font bitblit
snd_mixer_oss snd_pcm think
pad_acpi softcursor snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi
snd_seq_midi_event drm_kms_helper joydev snd_seq drm cfg80211 pcmcia
snd_timer snd_seq
_device uvcvideo videobuf2_core i2c_algo_bit intel_agp psmouse
intel_gtt videodev snd video soundcore yenta_socket agpgart tpm_tis
tpm videobuf2_vmalloc lp v
ideobuf2_memops snd_page_alloc nvram pcmcia_rsrc pcmcia_core tpm_bios
serio_raw parport ahci libahci e1000e
[11056.342921] Pid: 0, comm: swapper/0 Tainted: G        W  O 3.3.0-rc4-wl #11
[11056.342928] Call Trace:
[11056.342947]  [<c0133b02>] warn_slowpath_common+0x72/0xa0
[11056.342986]  [<f851ca28>] ? iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]
[11056.343022]  [<f851ca28>] ? iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]
[11056.343034]  [<c0133bd3>] warn_slowpath_fmt+0x33/0x40
[11056.343071]  [<f851ca28>] iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]
[11056.343090]  [<c01913f1>] ? trace_hardirqs_on_caller+0xa1/0x180
[11056.343102]  [<c01914db>] ? trace_hardirqs_on+0xb/0x10
[11056.343113]  [<c01ca227>] ? __rcu_process_callbacks+0x47/0x3e0
[11056.343126]  [<c013bc2e>] tasklet_action+0xbe/0x180
[11056.343136]  [<c013b05f>] __do_softirq+0xaf/0x2e0
[11056.343148]  [<c013afb0>] ? perf_trace_irq_handler_entry+0x120/0x120
[11056.343156]  <IRQ>  [<c013ac55>] ? irq_exit+0xb5/0xd0
[11056.343176]  [<c06a2d5b>] ? do_IRQ+0x4b/0xc0
[11056.343188]  [<c016be95>] ? sched_clock_local+0xa5/0x180
[11056.343200]  [<c06a2c75>] ? common_interrupt+0x35/0x40
[11056.343211]  [<c019007b>] ? check_usage_forwards+0x6b/0xe0
[11056.343225]  [<c04342d9>] ? acpi_idle_enter_bm+0x247/0x282
[11056.343239]  [<c0561db9>] ? cpuidle_idle_call+0xa9/0x210
[11056.343250]  [<c0101fe9>] ? cpu_idle+0xa9/0x100
[11056.343261]  [<c067eecc>] ? rest_init+0xec/0x150
[11056.343271]  [<c067ee2d>] ? rest_init+0x4d/0x150
[11056.343285]  [<c0953851>] ? start_kernel+0x387/0x38d
[11056.343296]  [<c09532f6>] ? kernel_init+0x149/0x149
[11056.343308]  [<c0953075>] ? i386_start_kernel+0x75/0x79
[11056.343315] ---[ end trace 899cb4cab2cee742 ]---
[12661.000216] wlan0: detected beacon loss from AP - sending probe request
[12661.054472] wlan0: cancelling probereq poll due to a received beacon
[12745.168125] thinkpad_acpi: EC reports that Thermal Table has changed


-- 
thanks,
shafi

Re: WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465 iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()

[Johannes Berg]

Hi Mohammed,

> got this following warning  for the following card, it was my inbuilt
> card it was just associated with an AP, wireless-testing 3.3.0-rc4-wl
> 
> 03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN
> [Shiloh] Network Connection
>         Subsystem: Intel Corporation Device 1211

> [11056.342672] WARNING: at
> drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465
> iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()
> [11056.342681] Hardware name: 64756D6
> [11056.342687] reclaim is false, SEQ_RX_FRAME unset: STATISTICS_NOTIFICATION

Thanks for the report. The warning is harmless, but we were hoping this
code was only to handle 4965 (this code comes from pre-driver-split
days). As we weren't sure, we put in the warning. Since you ran into it,
evidently this does in fact happen on later devices; it will complicate
our life a bit but we'll handle it.

For you, there's nothing to worry about, the driver handles this
situation just fine. :-)

Thanks!

johannes

Re: WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465 iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()

[Mohammed Shafi]

Hi Johannes,

>> got this following warning  for the following card, it was my inbuilt
>> card it was just associated with an AP, wireless-testing 3.3.0-rc4-wl
>>
>> 03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN
>> [Shiloh] Network Connection
>>         Subsystem: Intel Corporation Device 1211
>
>> [11056.342672] WARNING: at
>> drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465
>> iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()
>> [11056.342681] Hardware name: 64756D6
>> [11056.342687] reclaim is false, SEQ_RX_FRAME unset: STATISTICS_NOTIFICATION
>
> Thanks for the report. The warning is harmless, but we were hoping this
> code was only to handle 4965 (this code comes from pre-driver-split
> days). As we weren't sure, we put in the warning. Since you ran into it,
> evidently this does in fact happen on later devices; it will complicate
> our life a bit but we'll handle it.

oh ok,  also i am just using the default firmware thats in my system
[36762.942612] iwlwifi 0000:03:00.0: loaded firmware version 8.83.5.1
build 33692

[36762.886932] Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:d
[36762.886935] Copyright(c) 2003-2012 Intel Corporation
[36762.887170] iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000
[36762.887173] iwlwifi 0000:03:00.0: pci_resource_base = f8190000
[36762.887176] iwlwifi 0000:03:00.0: HW Revision ID = 0x0
[36762.887353] iwlwifi 0000:03:00.0: irq 48 for MSI/MSI-X
[36762.887691] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG enabled
[36762.887694] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[36762.887696] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[36762.887698] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TESTMODE enabled
[36762.887700] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_P2P disabled
[36762.887704] iwlwifi 0000:03:00.0: Detected Intel(R) WiFi Link 5100
AGN, REV=0x54
[36762.888228] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
[36762.907566] iwlwifi 0000:03:00.0: device EEPROM VER=0x11e, CALIB=0x4
[36762.907569] iwlwifi 0000:03:00.0: Device SKU: 0xF0
[36762.907829] iwlwifi 0000:03:00.0: Tunable channels: 13 802.11bg, 24
802.11a channels
[36762.942612] iwlwifi 0000:03:00.0: loaded firmware version 8.83.5.1
build 33692
[36762.943763] Registered led device: phy5-led

>
> For you, there's nothing to worry about, the driver handles this
> situation just fine. :-)


ok , thank you!


-- 
thanks,
shafi

RE: WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465 iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()

[Grumbach, Emmanuel]

> >
> >> [11056.342672] WARNING: at
> >> drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465
> >> iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()
> >> [11056.342681] Hardware name: 64756D6
> >> [11056.342687] reclaim is false, SEQ_RX_FRAME unset:
> STATISTICS_NOTIFICATION
> >
> > Thanks for the report. The warning is harmless, but we were hoping this
> > code was only to handle 4965 (this code comes from pre-driver-split
> > days). As we weren't sure, we put in the warning. Since you ran into it,
> > evidently this does in fact happen on later devices; it will complicate
> > our life a bit but we'll handle it.
> 
> oh ok,  also i am just using the default firmware thats in my system
> [36762.942612] iwlwifi 0000:03:00.0: loaded firmware version 8.83.5.1
> build 33692
> 

And this one seems to be the latest but I am not sure. Can you please download http://intellinuxwireless.org/iwlwifi/downloads/iwlwifi-5000-ucode-8.83.5.1-1.tar.gz and check what is the diff with your version ?
Thanks !


> 
> >
> > For you, there's nothing to worry about, the driver handles this
> > situation just fine. :-)
> 
> 
Yes, it just means that we must remove this WARNING. Thanks for the heads-up !
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Re: WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465 iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()

[Mohammed Shafi]

Hi Emmanuel,
>
> And this one seems to be the latest but I am not sure. Can you please download http://intellinuxwireless.org/iwlwifi/downloads/iwlwifi-5000-ucode-8.83.5.1-1.tar.gz and check what is the diff with your version ?
> Thanks !
>

ok, i will try this one. thanks!

-- 
thanks,
shafi

RE: WARNING: at drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465 iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()

[Johannes Berg]

On Tue, 2012-02-28 at 17:39 +0000, Grumbach, Emmanuel wrote:
> > >
> > >> [11056.342672] WARNING: at
> > >> drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c:465
> > >> iwl_irq_tasklet+0x7c8/0x1620 [iwlwifi]()
> > >> [11056.342681] Hardware name: 64756D6
> > >> [11056.342687] reclaim is false, SEQ_RX_FRAME unset:
> > STATISTICS_NOTIFICATION
> > >
> > > Thanks for the report. The warning is harmless, but we were hoping this
> > > code was only to handle 4965 (this code comes from pre-driver-split
> > > days). As we weren't sure, we put in the warning. Since you ran into it,
> > > evidently this does in fact happen on later devices; it will complicate
> > > our life a bit but we'll handle it.
> > 
> > oh ok,  also i am just using the default firmware thats in my system
> > [36762.942612] iwlwifi 0000:03:00.0: loaded firmware version 8.83.5.1
> > build 33692
> > 
> 
> And this one seems to be the latest but I am not sure. Can you please download http://intellinuxwireless.org/iwlwifi/downloads/iwlwifi-5000-ucode-8.83.5.1-1.tar.gz and check what is the diff with your version ?

ISTR that the only difference was that the previous version was
accidentally packaged as supporting two virtual interfaces, which isn't
true.

johannes