Re: <IRQ> [<ffffffff810c9204>] ? __alloc_pages_nodemask+0x622/0x696

[Justin P. Mattock]

On 03/15/2011 03:13 PM, Luis R. Rodriguez wrote:
> 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
> > > --
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> > 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

at this point I have seen this a few times now. but as for reproducing I 
can try and see.(cloning the wireless tree and loading it up)

Justin P. Mattock
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