Re: 2.6.17-mm4 + hostap + pcmcia + lockdep -- possible recursive locking detected -- (af_callback_keys + sk->sk_family#3){-.-?}, at: [<c119d8db>] sock_def_readable+0x15/0x69
From: Miles Lane
Date: Mon Jul 03 2006 - 02:06:55 EST
On 7/2/06, Ingo Molnar <mingo@xxxxxxx> wrote:
* Ingo Molnar <mingo@xxxxxxx> wrote:
> * Miles Lane <miles.lane@xxxxxxxxx> wrote:
>
> > I have patches for hostap, pcmcia and lockdep applied to this kernel.
> > These patches are the ones resulting from several recent message
> > threads. I just noticed this in my kernel log:
> >
> > [ INFO: possible recursive locking detected ]
> > ---------------------------------------------
>
> ok, lockdep should allow same-class read-lock recursion too, because
> it's used by real code and is being relied upon. Could you try the patch
> below? [...]
the patches are also included in the latest -mm5 combo patch at:
http://redhat.com/~mingo/lockdep-patches/lockdep-combo-2.6.17-mm5.patch
I have not seen this particular INFO message show up again.
Therefore, I haven't tested your latest patch yet. I wanted to determine
whether this problem would occur often. If you like I can go ahead and
test the patch anyhow. I am currently testing mm5 + the pcmcia patch and
the hostap patch. I am looking into a crashing (system lockup) bug that is
triggered by removing my Linksys USB 10/100 Ethernet adapter. This
problem is 100% repeatable. I am working on setting up a remote
debugging configuration.
Would you like me to go ahead and test your latest patch?
Thanks,
Miles
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