This is a note to let you know that I've just added the patch titled
mac80211: fix multicast LED blinking and counter
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mac80211-fix-multicast-led-blinking-and-counter.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d025933e29872cb1fe19fc54d80e4dfa4ee5779c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=BCller?= <goo@xxxxxxxxxxxxxxxxxx>
Date: Fri, 12 Dec 2014 12:11:11 +0100
Subject: mac80211: fix multicast LED blinking and counter
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From: =?UTF-8?q?Andreas=20M=C3=BCller?= <goo@xxxxxxxxxxxxxxxxxx>
commit d025933e29872cb1fe19fc54d80e4dfa4ee5779c upstream.
As multicast-frames can't be fragmented, "dot11MulticastReceivedFrameCount"
stopped being incremented after the use-after-free fix. Furthermore, the
RX-LED will be triggered by every multicast frame (which wouldn't happen
before) which wouldn't allow the LED to rest at all.
Fixes https://bugzilla.kernel.org/show_bug.cgi?id=89431 which also had the
patch.
Fixes: b8fff407a180 ("mac80211: fix use-after-free in defragmentation")
Signed-off-by: Andreas Müller <goo@xxxxxxxxxxxxxxxxxx>
[rewrite commit message]
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/mac80211/rx.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1679,14 +1679,14 @@ ieee80211_rx_h_defragment(struct ieee802
sc = le16_to_cpu(hdr->seq_ctrl);
frag = sc & IEEE80211_SCTL_FRAG;
- if (likely(!ieee80211_has_morefrags(fc) && frag == 0))
- goto out;
-
if (is_multicast_ether_addr(hdr->addr1)) {
rx->local->dot11MulticastReceivedFrameCount++;
- goto out;
+ goto out_no_led;
}
+ if (likely(!ieee80211_has_morefrags(fc) && frag == 0))
+ goto out;
+
I802_DEBUG_INC(rx->local->rx_handlers_fragments);
if (skb_linearize(rx->skb))
@@ -1777,9 +1777,10 @@ ieee80211_rx_h_defragment(struct ieee802
status->rx_flags |= IEEE80211_RX_FRAGMENTED;
out:
+ ieee80211_led_rx(rx->local);
+ out_no_led:
if (rx->sta)
rx->sta->rx_packets++;
- ieee80211_led_rx(rx->local);
return RX_CONTINUE;
}
Patches currently in stable-queue which might be from goo@xxxxxxxxxxxxxxxxxx are
queue-3.14/mac80211-fix-multicast-led-blinking-and-counter.patch
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