netdev - [PATCH] mac80211: fix reorder buffer release

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 4 Dec 2009 16:55:55 -0500
From:	"John W. Linville" <linville@...driver.com>
To:	davem@...emloft.net
Cc:	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, chunkeey@...glemail.com,
	reinette.chatre@...el.com
Subject: [PATCH] mac80211: fix reorder buffer release

From: Johannes Berg <johannes@...solutions.net>

My patch "mac80211: correctly place aMPDU RX reorder code"
uses an skb queue for MPDUs that were released from the
buffer. I intentially didn't initialise and use the skb
queue's spinlock, but in this place forgot that the code
variant that doesn't touch the spinlock is needed.

Thanks to Christian Lamparter for quickly spotting the
bug in the backtrace Reinette reported.

Reported-by: Reinette Chatre <reinette.chatre@...el.com>
Bug-identified-by: Christian Lamparter <chunkeey@...glemail.com>
Tested-by: Reinette Chatre <reinette.chatre@...el.com>
Signed-off-by: Johannes Berg <johannes@...solutions.net>
Signed-off-by: John W. Linville <linville@...driver.com>
---
Dave,

I missed this in today's pull request -- please queue it directly in
your tree!

Thanks,

John

 net/mac80211/rx.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- wireless-testing.orig/net/mac80211/rx.c	2009-12-03 20:18:21.000000000 +0100
+++ wireless-testing/net/mac80211/rx.c	2009-12-03 20:42:50.000000000 +0100
@@ -570,7 +570,7 @@ static void ieee80211_release_reorder_fr
 		rate = &sband->bitrates[status->rate_idx];
 	tid_agg_rx->stored_mpdu_num--;
 	tid_agg_rx->reorder_buf[index] = NULL;
-	skb_queue_tail(frames, skb);
+	__skb_queue_tail(frames, skb);
 
 no_frame:
 	tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num);


-- 
John W. Linville		Someday the world will need a hero, and you
linville@...driver.com			might be all we have.  Be ready.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html