Bug 25202

Summary:	BUG: while bridging Ethernet and wireless device:
Product:	Networking	Reporter:	Tomas Winkler (tomasw)
Component:	Other	Assignee:	Arnaldo Carvalho de Melo (acme)
Status:	CLOSED CODE_FIX
Severity:	high	CC:	florian, johannes, rjw
Priority:	P1
Hardware:	All
OS:	Linux
URL:	http://marc.info/?l=linux-netdev&m=129250180417228&w=2
Kernel Version:	2.6.37-rc5	Subsystem:
Regression:	Yes	Bisected commit-id:
Attachments:	error log

Description Tomas Winkler 2010-12-19 09:06:37 UTC

Created attachment 40792 [details]
error log

bridging between Ethernet and wifi driver in AP mode triggers BUG_ON while in rx path.

Steps to Reproduce
iw wlan0 set type __ap
ifconfig eth0 0.0.0.0
ifconfgi wlan0 0.0.0.0
brctl addbr br0
brctl addif br0 wlan0
brctl addif br0 eth0
ifconfig br0 10.0.0.1/24 up

traffic from Wifi-Client->wlan0 -> eth0 -> Ether-Client


This is regression in sense that there wasn't such crush int kernels 2.6.29 as far as I remember.


http://marc.info/?l=linux-netdev&m=129250180417228&w=2

Comment 1 Rafael J. Wysocki 2010-12-22 00:29:45 UTC

What exactly was the last good kernel?

Comment 2 Johannes Berg 2010-12-22 13:12:30 UTC

I believe what would've broken it is 2f301227, but that just changed iwlwifi and shouldn't have had this effect. That was in 2.6.33.

Comment 3 Florian Mickler 2011-01-23 15:41:30 UTC

There was a fix committed in .37 that mentions this bugreport: 
commit 9d89081d698132b5f964aea88112f76492563ee9
Author: Tomas Winkler <tomas.winkler@intel.com>
Date:   Mon Jan 3 11:26:08 2011 -0800

    bridge: fix br_multicast_ipv6_rcv for paged skbs