Just FYI
Kernel 3.6.7 change log says "This patch might fix crashes and "Failed to stop TX DMA!" messages."
I tried it on Dell laptop with ar9390 radio.
Still, I got error message like below
"ath: phy0: Failed to stop TX DMA, queues=0x005!"
"ath: phy0: Failed to stop TX DMA, queues=0x001!"
I am testing 802.11s mesh on 802.11a channel 40, no HT enabled.
-----------------------------
commit cd585fb70b89fb57f8dffb03a2a72c30f81f5da6
Author: Felix Fietkau <nbd@xxxxxxxxxxx>
Date: Fri Oct 26 00:31:11 2012 +0200
ath9k: fix stale pointers potentially causing access to free'd skbs
commit 8c6e30936a7893a85f6222084f0f26aceb81137a upstream.
bf->bf_next is only while buffers are chained as part of an A-MPDU
in the tx queue. When a tid queue is flushed (e.g. on tearing down
an aggregation session), frames can be enqueued again as normal
transmission, without bf_next being cleared. This can lead to the
old pointer being dereferenced again later.
This patch might fix crashes and "Failed to stop TX DMA!" messages.
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
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