Re: [lwip-users] TCP tmr endless loop

[Jonathan Larmour]

Kieran Mansley wrote:
> On Wed, 2007-10-24 at 13:11 +0200, Erik Ekman wrote:
>
>
> > The problem is that sometimes it gets stuck in the tcp_slowtmr and
> > tcp_fasttmr, just like described earlier in the list. The
> > tcp_active_pcb has a pointer next which points to itself.
>
>
> That sort of list corruption very much points to two threads being
> active in the core of lwIP at the same time.

Specifically your lwip_tick() and signal_send() functions are probably 
being called overlapping each other, and each is making its own calls into 
lwIP.

Jifl
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