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From: =?utf-8?Q?Bj=C3=B8rn_Mork?= <bjorn@mork.no>
To: Miles Lane <miles.lane@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: 3.11.0-rc6+: INFO: possible circular locking dependency detected
Organization: m
References: <CAHFgRy9p2vMjTm+1KTZKei5i66dvD6FP1xW2XrRxkrHvCHPAvw@mail.gmail.com>
Date: Tue, 20 Aug 2013 09:07:38 +0200
In-Reply-To: <CAHFgRy9p2vMjTm+1KTZKei5i66dvD6FP1xW2XrRxkrHvCHPAvw@mail.gmail.com>
	(Miles Lane's message of "Mon, 19 Aug 2013 22:26:06 -0700")
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Miles Lane <miles.lane@gmail.com> writes:

> [   24.990076] [ INFO: possible circular locking dependency detected ]
> [   24.990086] 3.11.0-rc6+ #154 Not tainted
> [   24.990094] -------------------------------------------------------
> [   24.990103] crda/1159 is trying to acquire lock:
> [   24.990111]  (genl_mutex){+.+.+.}, at: [<ffffffff812ff7e6>]
> genl_lock+0x12/0x14
> [   24.990134]
> [   24.990134] but task is already holding lock:
> [   24.990144]  (nlk->cb_mutex){+.+.+.}, at: [<ffffffff812fdab8>]
> netlink_dump+0x1c/0x1da

Yes, me too...  This is already discussed on netdev:
http://www.spinics.net/lists/stable/msg18179.html

But the fix is still out in the blue as far as I understand.  Reverting
58ad436fc will fix it, but leave the original problem (missing locking)
unfixed.


Bjørn

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