linux-kernel - Re: mac80211 : WARN at net/mac80211/rate.h:153

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Message-Id: <200807141614.51628.mb@bu3sch.de>
Date:	Mon, 14 Jul 2008 16:14:51 +0200
From:	Michael Buesch <mb@...sch.de>
To:	Dave Young <hidave.darkstar@...il.com>
Cc:	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
	Stefano Brivio <stefano.brivio@...imi.it>,
	Mattias Nissler <mattias.nissler@....de>
Subject: Re: mac80211 : WARN at net/mac80211/rate.h:153

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.
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