From: Jarek Poplawski <jarkao2@gmail.com>
To: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Subject: Re: iw lockdep warning on wireless-testing
Date: Tue, 24 Jun 2008 17:03:19 +0200 [thread overview]
Message-ID: <48610CB7.5030705@gmail.com> (raw)
In-Reply-To: <1214298350.14590.238.camel@debian.sh.intel.com>
Zhu Yi wrote, On 06/24/2008 11:05 AM:
> On Tue, 2008-06-24 at 10:59 +0200, Johannes Berg wrote:
>>> [ INFO: possible circular locking dependency detected ]
>>> 2.6.26-rc6-wl #57
>>> -------------------------------------------------------
>>> iw/2763 is trying to acquire lock:
>>> (genl_mutex){--..}, at: [<ffffffff81216e4c>] ctrl_dumpfamily
>> +0x31/0xf7
>>> but task is already holding lock:
>>> (nlk->cb_mutex){--..}, at: [<ffffffff812137c8>] netlink_dump
>> +0x40/0x19d
>>> which lock already depends on the new lock.
>> None of those is anything nl80211 has influence over, afaict.
>
> Agreed. I can follow the two scenarios below. Apparently it's a ABBA
> locking issue. Just don't know which should be the correct sequence for
> using with the two locks.
>
It should be fixed by this patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=6d1a3fb567a728d31474636e167c324702a0c38b
Regards,
Jarek P.
prev parent reply other threads:[~2008-06-24 15:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-24 7:39 iw lockdep warning on wireless-testing Zhu Yi
2008-06-24 8:59 ` Johannes Berg
2008-06-24 8:59 ` Johannes Berg
2008-06-24 9:05 ` Zhu Yi
2008-06-24 9:05 ` Zhu Yi
2008-06-24 15:03 ` Jarek Poplawski
2008-06-24 15:03 ` Jarek Poplawski [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=48610CB7.5030705@gmail.com \
--to=jarkao2@gmail.com \
--cc=linux-wireless@vger.kernel.org \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.