From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: BUG: All network processes hang (brcmsmac/wpa_supplicant) Date: Wed, 19 Oct 2011 15:05:29 +0200 Message-ID: <1319029529.8416.3.camel@edumazet-laptop> References: <20111019123602.GA11883@schottelius.org> <1319028563.8416.1.camel@edumazet-laptop> <4E9EC96E.8020303@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Nico Schottelius , LKML , "linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , netdev To: Arend van Spriel Return-path: In-Reply-To: <4E9EC96E.8020303-dY08KVG/lbpWk0Htik3J/w@public.gmane.org> Sender: linux-wireless-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org Le mercredi 19 octobre 2011 =C3=A0 14:58 +0200, Arend van Spriel a =C3=A9= crit : > On 10/19/2011 02:49 PM, Eric Dumazet wrote: > > Le mercredi 19 octobre 2011 =C3=A0 14:36 +0200, Nico Schottelius a = =C3=A9crit : > >> 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=3Dy" 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=3D{ > >> ssid=3D"eth" > >> id_str=3D"eth-802.2x" > >> key_mgmt=3DWPA-EAP > >> proto=3DWPA2 > >> eap=3DTTLS > >> pairwise=3DCCMP TKIP > >> group=3DCCMP TKIP > >> phase2=3D"auth=3DMSCHAPV2" > >> identity=3D"MYNAME" > >> password=3D"forgottoremoveit" > >> } > >> > >> Hope the dmesg output helps and we can remove the problem soon > >> and making the mba finally almost completly usable :-) > >> > >=20 > > Sorry, no CONFIG_LOCKDEP in your config or dmesg. Maybe you sent a > > previous dmesg/config file ? > >=20 > > Note that you have "CONFIG_LOCKDEP_SUPPORT=3Dy", not "CONFIG_LOCKDE= P=3Dy" > >=20 >=20 > Hi Eric, >=20 > Are there any configuration setting needed that CONFIG_LOCKDEP depend= s on? config LOCKDEP bool depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE= _SUPPORT && LOCKDEP_SUPPORT select STACKTRACE select FRAME_POINTER if !MIPS && !PPC && !ARM_UNWIND && !S390 &= & !MICROBLAZE select KALLSYMS select KALLSYMS_ALL make menuconfig -> Kernel hacking -> Lock debugging: prove locking correctness -- To unsubscribe from this list: send the line "unsubscribe linux-wireles= s" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html