From: Felix Fietkau <nbd@openwrt.org>
Date: Wed, 9 Jan 2013 15:16:53 +0000 (+0100)
Subject: ath9k: fix double-free bug on beacon generate failure
X-Git-Tag: v3.2.38~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a282707dd03b6cbf4acc77e2d0e9a4ea1ccb2d04;p=pandora-kernel.git

ath9k: fix double-free bug on beacon generate failure

commit 1adb2e2b5f85023d17eb4f95386a57029df27c88 upstream.

When the next beacon is sent, the ath_buf from the previous run is reused.
If getting a new beacon from mac80211 fails, bf->bf_mpdu is not reset, yet
the skb is freed, leading to a double-free on the next beacon tx attempt,
resulting in a system crash.

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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