Re: [lwip-users] Embedded lwIP application stops working after 4-5 days

[peter]

Hi Simon

Thank you for your response. I have inserted the assert, so hopefully it 
will reveal something in the next 5 days or so.

Regards,
Peter.

Simon Goldschmidt skrev den 17.06.2016 12:52:
> Peter Haagerup wrote:
> > the fields "max" and "err" in the MEM UDP_PCB section contains the 
> > number 4294967295 (2^32 - 1) which is strange
>
> That's really strange: 'err' is only increased but never decreased.
> Also, by default, the stats counters are u16_t, not u32_t.
> I don't expect disabling UDP to fix this problem...
> Why don't you put an assert in memp.c where 'used' is decremented: just 
> add
>
>   "LWIP_ASSERT("double-free", lwip_stats.memp[type].used != 0);"
>
> before
>
>   "MEMP_STATS_DEC(used, type);"
>
> and you should be able to see if it really is an underflow.
>
>
> Gisle Vanem wrote:
> > Just an idea, you could try:
> > #define LWIP_DNS_SECURE 0
>
> Now I really don't see what this should change when using 1.4.1,
> unless TI has backported a fix to their 1.4.1 (in which case it
> wouldn't be 1.4.1 ...)
>
> Simon
>
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