linux-kernel - Re: <IRQ> [<ffffffff810c9204>] ? __alloc_pages

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Message-ID: <alpine.DEB.2.00.1103091549020.16989@router.home>
Date:	Wed, 9 Mar 2011 15:54:24 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	"Justin P. Mattock" <justinmattock@...il.com>
cc:	David Rientjes <rientjes@...gle.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Nick Piggin <npiggin@...nel.dk>,
	Dave Chinner <dchinner@...hat.com>,
	linux-kernel@...r.kernel.org,
	Pekka Enberg <penberg@...helsinki.fi>,
	Jiri Slaby <jirislaby@...il.com>,
	Nick Kossifidis <mickflemm@...il.com>,
	Bob Copeland <me@...copeland.com>,
	"Luis R. Rodriguez" <lrodriguez@...eros.com>,
	linux-wireless@...r.kernel.org
Subject: Re: <IRQ> [<ffffffff810c9204>] ?
 __alloc_pages_nodemask+0x622/0x696

Some more things from the syslog that may be of relevance. System went
through multiple suspend and resume cycles.

Before the failure we have a wlan authentication and the ATH driver throws a fit.

[ 7339.673270] ll header: ff:ff:ff:ff:ff:ff:00:90:fb:1c:4f:5c:08:00
[ 7340.076865] FIREWALL:INPUT IN=wlan0 OUT= MAC=00:19:e3:06:2c:16:00:90:fb:1c:4f:5c:08:00 SRC=192.168.5.1
DST=192.168.5.11 LEN=48 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=251 SEQ=0
[ 7416.743752] cfg80211: Calling CRDA to update world regulatory domain
[ 7419.292521] wlan0: authenticate with 00:21:55:b4:20:20 (try 1)
[ 7419.312690] wlan0: authenticated
[ 7419.318325] wlan0: associate with 00:21:55:b4:20:20 (try 1)
[ 7419.322764] wlan0: RX AssocResp from 00:21:55:b4:20:20 (capab=0x401 status=0 aid=218)
[ 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
[ 7603.339055]
-----------------------------------------------------------------------------
[ 7603.339056]


Could the ath driver corrupt memory if the TX DMA cannot be stopped?

Maybe fix the driver first?


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