netdev - Re: BUG: All network processes hang (brcmsmac/wpa

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Date:	Wed, 19 Oct 2011 14:49:23 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Nico Schottelius <nico-linux-20111017@...ottelius.org>
Cc:	Arend van Spriel <arend@...adcom.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>
Subject: Re: BUG: All network processes hang (brcmsmac/wpa_supplicant)

Le mercredi 19 octobre 2011 à 14:36 +0200, Nico Schottelius a écrit :
> Hello,
> 
> I've
> 
> Eric Dumazet [Tue, Oct 18, 2011 at 02:24:25PM +0200]:
> > Must be a mutex_unlock(some_mltex) missing somewhere.
> > 
> > Then later, a process holding RTNL is blocking on mutex_lock(some_mutex)
> > 
> > Try a "CONFIG_LOCKDEP=y" enabled build
> 
> Did so, attached is the dmesg output after 3x suspend.
> 
> It also seems this bug gets more / only triggered when I loose the
> connection to a wpa2-eap network that is defined like this:
> 
> network={
>    ssid="eth"
>   id_str="eth-802.2x"
>    key_mgmt=WPA-EAP
>    proto=WPA2
>    eap=TTLS
>    pairwise=CCMP TKIP
>    group=CCMP TKIP
>    phase2="auth=MSCHAPV2"
>    identity="MYNAME"
>    password="forgottoremoveit"
> }
> 
> Hope the dmesg output helps and we can remove the problem soon
> and making the mba finally almost completly usable :-)
> 

Sorry, no CONFIG_LOCKDEP in your config or dmesg. Maybe you sent a
previous dmesg/config file ?

Note that you have "CONFIG_LOCKDEP_SUPPORT=y", not "CONFIG_LOCKDEP=y"



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