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Date: Tue, 15 Mar 2011 15:13:12 -0700
From: "Luis R. Rodriguez" <lrodriguez@atheros.com>
To: "Justin P. Mattock" <justinmattock@gmail.com>
CC: Luis Rodriguez <Luis.Rodriguez@Atheros.com>,
	Bob Copeland <me@bobcopeland.com>,
	Christoph Lameter <cl@linux.com>,
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	Nick Kossifidis <mickflemm@gmail.com>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: Re: <IRQ> [<ffffffff810c9204>] ? __alloc_pages_nodemask+0x622/0x696
Message-ID: <20110315221312.GR11878@tux>
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On Tue, Mar 15, 2011 at 02:28:52PM -0700, Justin P. Mattock wrote:
> On 03/15/2011 01:59 PM, Luis R. Rodriguez wrote:
> > On Wed, Mar 09, 2011 at 04:05:02PM -0800, Bob Copeland wrote:
> >> On Wed, Mar 09, 2011 at 03:54:24PM -0600, Christoph Lameter wrote:
> >>> [ 7419.322770] wlan0: associated
> >>> [ 7427.161366] ath: Failed to stop TX DMA in 100 msec after killing last frame
> >>> [ 7427.161432] ath: Failed to stop TX DMA!
> >>> [ 7434.492398] ath: Failed to stop TX DMA in 100 msec after killing last frame
> >>> [ 7434.492462] ath: Failed to stop TX DMA!
> >>> [ 7603.339047]
> >>> =============================================================================
> >>> [ 7603.339053] BUG radix_tree_node: Padding overwritten. 0xffff88000008fe00-0xffff88000008fe32
> >>
> >>> Could the ath driver corrupt memory if the TX DMA cannot be stopped?
> >
> > Yes, this is why we have had a series of patches to address this upstream,
> > the latest one was for RX DMA failing to stop but Felix found a fix for that.
> > Apart from that I am not aware of more issues. Can you please try with
> > wireless-testing.git ?
> >
> >    Luis
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> > Please read the FAQ at  http://www.tux.org/lkml/
> >
> sure..
> 
> as for seeing this issue. nothing really now on the current. only 
> message I see is:
> 
> [   69.551295] ath: Failed to stop TX DMA in 100 msec after killing last 
> frame
> [   69.551336] ath: Failed to stop TX DMA!

Can you easily reproduce?

  Luis