From: Michael Buesch <mb@bu3sch.de>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org
Subject: Re: mac80211/bcm43xx deadlock
Date: Tue, 26 Jun 2007 16:17:45 +0200 [thread overview]
Message-ID: <200706261617.45713.mb@bu3sch.de> (raw)
In-Reply-To: <1182848382.3830.5.camel@johannes.berg>
On Tuesday 26 June 2007 10:59:41 Johannes Berg wrote:
> Hey,
>
> I just managed to deadlock bcm43xx when I was trying to do something
> with iwconfig at the same time as telling network manager to shut off
> the interface. It stayed up and things were locked up.
>
> I haven't been able to analyse it yet, I dumped process stacks a few
> times and put the resulting log at
> http://johannes.sipsolutions.net/files/mac80211-bcm43xx-deadlock
>
> Note that many processes are in rtnl_lock() but wpa_supplicant is stuck
> in wait_for_completion.
>
> johannes
>
That's a known bug.
See the FIXME at stop_core() where we stop the mac80211-queues.
mac80211 needs to be fixed to fix this. ;)
We need a function to stop and flush the TX queues from
_outside_ of the TX handlers.
--
Greetings Michael.
next prev parent reply other threads:[~2007-06-26 14:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-26 8:59 mac80211/bcm43xx deadlock Johannes Berg
2007-06-26 10:14 ` Johannes Berg
2007-06-29 6:14 ` Michael Wu
2007-06-26 14:17 ` Michael Buesch [this message]
2007-06-27 9:38 ` Johannes Berg
2007-06-27 12:48 ` Michael Buesch
2007-06-27 14:06 ` Johannes Berg
2007-06-27 14:21 ` Johannes Berg
2007-06-27 18:02 ` Johannes Berg
2007-07-18 18:13 ` John W. Linville
2007-07-18 20:28 ` Michael Wu
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