Hi,
I get warnings when I run
dhcpcd wlan0
The driver using is ath5k
warnings like following:
------------[ cut here ]------------
WARNING: at net/mac80211/rate.h:153 rate_control_pid_rate_init+0x7a/0xa0 [mac80211]()
Modules linked in: radeon drm snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss rfcomm l2cap bluetooth vfat fuse snd_hda_intel ath5k mac80211 rtc_cmos rtc_core rtc_lib psmouse snd_pcm snd_timer snd_page_alloc snd_hwdep 3c59x intel_agp snd e100 cfg80211 i2c_i801 serio_raw mii soundcore agpgart thermal processor button thermal_sys evdev sg
Pid: 0, comm: swapper Tainted: G W 2.6.26-smp #1
[<c0127954>] warn_on_slowpath+0x54/0x70
[<c0177000>] ? print_trailer+0xa0/0xf0
[<c0177071>] ? check_bytes_and_report+0x21/0xc0
[<c0177452>] ? check_object+0xe2/0x1e0
[<c0178117>] ? __slab_alloc+0x3a7/0x4c0
[<f8d6a196>] ? rate_control_pid_alloc_sta+0x16/0x50 [mac80211]
[<f8d6a2ba>] rate_control_pid_rate_init+0x7a/0xa0 [mac80211]
[<f8d4fcf7>] ieee80211_ibss_add_sta+0xc7/0x110 [mac80211]
[<f8d5a377>] __ieee80211_rx_handle_packet+0x417/0x7b0 [mac80211]
[<c0177071>] ? check_bytes_and_report+0x21/0xc0
[<f8d5c845>] __ieee80211_rx+0x185/0x560 [mac80211]
[<c0109769>] ? read_tsc+0x9/0x30
[<f89199dc>] ? ath5k_hw_get_tsf64+0x4c/0x90 [ath5k]
[<f89161e3>] ath5k_tasklet_rx+0xf3/0x710 [ath5k]
[<c0141f1d>] ? clocksource_get_next+0x3d/0x50
[<c01408ad>] ? update_wall_time+0x28d/0x800
[<f8919712>] ? ath5k_hw_is_intr_pending+0x22/0x50 [ath5k]
[<c012d019>] tasklet_action+0x49/0xb0
[<c012cae6>] __do_softirq+0x76/0xf0
[<c012cb9b>] do_softirq+0x3b/0x50
[<c012cf5c>] irq_exit+0x5c/0x70
[<c0106995>] do_IRQ+0x45/0x80
[<c012cf55>] ? irq_exit+0x55/0x70
[<c011288b>] ? smp_apic_timer_interrupt+0x5b/0x90
[<c010a220>] ? mwait_idle+0x0/0x40
[<c0104623>] common_interrupt+0x23/0x28
[<c010a220>] ? mwait_idle+0x0/0x40
[<c010a252>] ? mwait_idle+0x32/0x40
[<c01026db>] cpu_idle+0x5b/0xc0
[<c042054e>] rest_init+0x4e/0x60
=======================
---[ end trace de545485c8f84982 ]---
CCing PID guys.
I've seen several people hitting this. What's the meaning of this warning?
On Monday 14 July 2008 09:50:10 Dave Young wrote:
> Hi,
> I get warnings when I run
> dhcpcd wlan0
> The driver using is ath5k
>
> warnings like following:
>
> ------------[ cut here ]------------
> WARNING: at net/mac80211/rate.h:153 rate_control_pid_rate_init+0x7a/0xa0 [mac80211]()
> Modules linked in: radeon drm snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss rfcomm l2cap bluetooth vfat fuse snd_hda_intel ath5k mac80211 rtc_cmos rtc_core rtc_lib psmouse snd_pcm snd_timer snd_page_alloc snd_hwdep 3c59x intel_agp snd e100 cfg80211 i2c_i801 serio_raw mii soundcore agpgart thermal processor button thermal_sys evdev sg
> Pid: 0, comm: swapper Tainted: G W 2.6.26-smp #1
> [<c0127954>] warn_on_slowpath+0x54/0x70
> [<c0177000>] ? print_trailer+0xa0/0xf0
> [<c0177071>] ? check_bytes_and_report+0x21/0xc0
> [<c0177452>] ? check_object+0xe2/0x1e0
> [<c0178117>] ? __slab_alloc+0x3a7/0x4c0
> [<f8d6a196>] ? rate_control_pid_alloc_sta+0x16/0x50 [mac80211]
> [<f8d6a2ba>] rate_control_pid_rate_init+0x7a/0xa0 [mac80211]
> [<f8d4fcf7>] ieee80211_ibss_add_sta+0xc7/0x110 [mac80211]
> [<f8d5a377>] __ieee80211_rx_handle_packet+0x417/0x7b0 [mac80211]
> [<c0177071>] ? check_bytes_and_report+0x21/0xc0
> [<f8d5c845>] __ieee80211_rx+0x185/0x560 [mac80211]
> [<c0109769>] ? read_tsc+0x9/0x30
> [<f89199dc>] ? ath5k_hw_get_tsf64+0x4c/0x90 [ath5k]
> [<f89161e3>] ath5k_tasklet_rx+0xf3/0x710 [ath5k]
> [<c0141f1d>] ? clocksource_get_next+0x3d/0x50
> [<c01408ad>] ? update_wall_time+0x28d/0x800
> [<f8919712>] ? ath5k_hw_is_intr_pending+0x22/0x50 [ath5k]
> [<c012d019>] tasklet_action+0x49/0xb0
> [<c012cae6>] __do_softirq+0x76/0xf0
> [<c012cb9b>] do_softirq+0x3b/0x50
> [<c012cf5c>] irq_exit+0x5c/0x70
> [<c0106995>] do_IRQ+0x45/0x80
> [<c012cf55>] ? irq_exit+0x55/0x70
> [<c011288b>] ? smp_apic_timer_interrupt+0x5b/0x90
> [<c010a220>] ? mwait_idle+0x0/0x40
> [<c0104623>] common_interrupt+0x23/0x28
> [<c010a220>] ? mwait_idle+0x0/0x40
> [<c010a252>] ? mwait_idle+0x32/0x40
> [<c01026db>] cpu_idle+0x5b/0xc0
> [<c042054e>] rest_init+0x4e/0x60
> =======================
> ---[ end trace de545485c8f84982 ]---
> --
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>
>
--
Greetings Michael.
On Mon, 2008-07-14 at 16:14 +0200, Michael Buesch wrote:
> CCing PID guys.
> I've seen several people hitting this. What's the meaning of this warning?
It basically means the rate control cannot find any rate in
local->hw.wiphy->bands[local->hw.conf.channel->band] that is supported
by the sta in question. Normally this should not happen. I guess the
reason is that the supported rates bits in the sta info are all zero,
which would probably be a bug. I haven't seen this here, but I don't use
the IBSS code either. To further investigate this, you could the
following just before the WARN_ON:
printk(KERN_DEBUG "supported rates bitmask: %08x\n",
sta->supp_rates[sband->band]);
Mattias
On Tue, Jul 15, 2008 at 1:17 AM, Mattias Nissler <[email protected]> wrote:
> On Mon, 2008-07-14 at 16:14 +0200, Michael Buesch wrote:
>> CCing PID guys.
>> I've seen several people hitting this. What's the meaning of this warning?
>
> It basically means the rate control cannot find any rate in
> local->hw.wiphy->bands[local->hw.conf.channel->band] that is supported
> by the sta in question. Normally this should not happen. I guess the
> reason is that the supported rates bits in the sta info are all zero,
> which would probably be a bug. I haven't seen this here, but I don't use
> the IBSS code either. To further investigate this, you could the
> following just before the WARN_ON:
>
> printk(KERN_DEBUG "supported rates bitmask: %08x\n",
> sta->supp_rates[sband->band]);
Yes, as you said, I get:
supported rates bitmask: 00000000
>
> Mattias
>
>
--
Regards
dave
Dave Young wrote:
> On Tue, Jul 15, 2008 at 1:17 AM, Mattias Nissler <[email protected]> wrote:
>> On Mon, 2008-07-14 at 16:14 +0200, Michael Buesch wrote:
>>> CCing PID guys.
>>> I've seen several people hitting this. What's the meaning of this warning?
>> It basically means the rate control cannot find any rate in
>> local->hw.wiphy->bands[local->hw.conf.channel->band] that is supported
>> by the sta in question. Normally this should not happen. I guess the
>> reason is that the supported rates bits in the sta info are all zero,
>> which would probably be a bug. I haven't seen this here, but I don't use
>> the IBSS code either. To further investigate this, you could the
>> following just before the WARN_ON:
This has been solved already:
http://git.kernel.org/?p=linux/kernel/git/linville/wireless-testing.git;a=commitdiff;h=def5e9a210235d690e79ae660972792860568421
Vlado
>>
>> printk(KERN_DEBUG "supported rates bitmask: %08x\n",
>> sta->supp_rates[sband->band]);
>
> Yes, as you said, I get:
>
> supported rates bitmask: 00000000
>
>> Mattias
>>
>>
>
>
>
On Tue, Jul 15, 2008 at 9:14 AM, Vladimir Koutny <[email protected]> wrote:
> Dave Young wrote:
>> On Tue, Jul 15, 2008 at 1:17 AM, Mattias Nissler <[email protected]> wrote:
>>> On Mon, 2008-07-14 at 16:14 +0200, Michael Buesch wrote:
>>>> CCing PID guys.
>>>> I've seen several people hitting this. What's the meaning of this warning?
>>> It basically means the rate control cannot find any rate in
>>> local->hw.wiphy->bands[local->hw.conf.channel->band] that is supported
>>> by the sta in question. Normally this should not happen. I guess the
>>> reason is that the supported rates bits in the sta info are all zero,
>>> which would probably be a bug. I haven't seen this here, but I don't use
>>> the IBSS code either. To further investigate this, you could the
>>> following just before the WARN_ON:
>
>
> This has been solved already:
>
> http://git.kernel.org/?p=linux/kernel/git/linville/wireless-testing.git;a=commitdiff;h=def5e9a210235d690e79ae660972792860568421
>
> Vlado
This pacth is wrong it causes that all IBSS traffic is transmitted
rate of BEACON (1MBit) , which is pretty bad performance like. We are
working on possible fixes.
Tomas
>>
>
>
>