From: Felix Fietkau <nbd@openwrt.org>
Date: Thu, 24 May 2012 12:32:20 +0000 (+0200)
Subject: ath9k: fix a use-after-free-bug when ath_tx_setup_buffer() fails
X-Git-Tag: v3.2.20~60
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2bb9966c233293c9959f4d77a3c994182604472e;p=pandora-kernel.git

ath9k: fix a use-after-free-bug when ath_tx_setup_buffer() fails

commit 81357a281dcc454841532c46b30e6f2ba12b73ea upstream.

ath_tx_setup_buffer() can fail if there is no ath_buf left, or if mapping DMA
failed. In this case it frees the skb passed to it.
If ath_tx_setup_buffer is called from ath_tx_form_aggr, the skb is still
linked into the tid buffer list and must be dequeued before being released.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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