linux-kernel - Re: ath9k crash 3.2-rc7

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Date:	Wed, 4 Jan 2012 16:28:09 -0500
From:	"John W. Linville" <linville@...driver.com>
To:	MR <g7af0ec1e3ea1e7b1@...tmail.ru>
Cc:	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org
Subject: Re: ath9k crash 3.2-rc7

You probably want to try linux-wireless@...r.kernel.org for maximum exposure...

On Thu, Jan 05, 2012 at 01:18:09AM +0400, MR wrote:
> Hello.
> 
> I have noticed a complete crash (forced switch to console and Alt-SysRq-B 
> doesn't work) when I use ath9k driver for my WiFi card. The problem is that 
> the crash occurs after a few hours of use, so blind bissecting doesn't look 
> like a short-term plan.
> 
> My card is (as lspci says):
> 
> 03:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless 
> Network Adapter (PCI-Express) (rev 01)
>         Subsystem: Device 1a3b:1089
>         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 17
>         Region 0: Memory at d7400000 (64-bit, non-prefetchable) [size=64K]
> 
> I use an Asus N53JN notebook, if that matters.
> 
> I have photos of two instances of the crash. The backtrace goes as follows (I 
> typed this in, so maybe there is a typo somewhere - I hope there is none, 
> though):
> 
> wq_worker_sleeping+0x10/0xa0
> __schedule+0x427/0x7b0
> ? call_rcu_sched+0x10/0x20
> schedule+0x3a/0x50
> do_exit+0x57c/0x840
> ? kmsg_dump+0x45/0xe0
> oops_end+0xa5/0xf0
> no_context+0xf2/0x270
> __bad_area_no_semaphore+0xe/0x10
> do_page_fault+0x2ba/0x450
> ? up+0x2d/0x50
> ? console_unlock+0x1df/0x250
> ? select_task_rq_fair+0x5be/0x970
> page_fault+0x25/0x30
> ? ath_update_survey_stats+0xb7/0x1c0 [ath9k]
> ath9k_config+0x115/0x780 [ath9k]
> ? queue_work+0x1a/0x20
> ? queue_delayed_work+0x25/0x30
> ? ieee80211_queue_delayed_work+0x46/0x60 [mac80211]
> ? ath9k_flush+0x155/0x1d0 [ath9k]
> ieee80211_hw_config+0xe2/0x160 [mac80211]
> ieee80211_scan_work+0x243/0x5c0 [mac80211]
> ? ieee80211_scan_rx+0x1c0/0x1c0 [mac80211]
> process_one_work+0x111/0x390
> worker_thread+0x162/0x340
> manage_workers.clone.26+0x240/0x240
> kthread+0x96/0xa0
> kernel_thread_helper+0x4/0x10
> ? kthread_worker_fn+0x190/0x190
> ? gs_change+0x13/0x13
> 
> 
> 
> 
> --
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-- 
John W. Linville		Someday the world will need a hero, and you
linville@...driver.com			might be all we have.  Be ready.
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