From: Arjan van de Ven <arjan@infradead.org>
To: Miles Lane <miles.lane@gmail.com>
Cc: Davem@davemloft.net, jgarzik@pobox.com,
Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@osdl.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.17-mm3 -- BUG: trying to register non-static key!
Date: Wed, 28 Jun 2006 22:16:13 +0200 [thread overview]
Message-ID: <1151525773.3153.46.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <a44ae5cd0606281109u5cc25038n67b086f0d4f6426e@mail.gmail.com>
On Wed, 2006-06-28 at 11:09 -0700, Miles Lane wrote:
> After rebuilding with your patch, the stack trace shows up,
> but now there is a warning of a possible circular locking dependency:
>
> [ INFO: possible circular locking dependency detected ]
> -------------------------------------------------------
> S13gdm/2088 is trying to acquire lock:
> (&dev->queue_lock){-+..}, at: [<c11a1fbc>] dev_queue_xmit+0x120/0x248
>
> but task is already holding lock:
> (&dev->_xmit_lock){-+..}, at: [<c11a201f>] dev_queue_xmit+0x183/0x248
>
> which lock already depends on the new lock.
>
ok this driver calls dev_queue_xmit() inside a ->hard_start_xmit
handler... that smells fishy.
Jeff/DaveM: is that legal ?
prev parent reply other threads:[~2006-06-28 20:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-27 21:47 Miles Lane
2006-06-28 15:34 ` Ingo Molnar
2006-06-28 18:09 ` Miles Lane
2006-06-28 20:16 ` Arjan van de Ven [this message]
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