Re: auro deadlock (was Re: e100 lockdep irq lock inversion.)

[Herbert Xu <herbert@gondor.apana.org.au>]

Arjan van de Ven <arjan@infradead.org> wrote:
> 
> Act 1
> 
> Enter the mpi_start_xmit() function, which is airo's xmit function.
> This function takes the aux_lock first, with irq's off, then calls
> skb_queue_tail(). skb_queue_tail takes the sk_receive_queue.lock (with
> irqsave as well).

Nope, make that ai->txq.

> Act 2
> 
> Enter the ipcalc program. This program calls an ioctl, which ends up
> calling udp_ioctl. udp_ioctl does
>   spin_lock_bh(&sk->sk_receive_queue.lock);

Different queue.

So no deadlock.  Better luck next time :)
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
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