Re: [lwip-users] Assertion "memp sanity" failed at line 463 in ../lwip_1_4_0/Src/core/memp.c

[Mikael Eiman]

Hi,

I had a similar problem recently, and in my case I was first using lwIP functions from multiple threads (it's not thread safe, don't do that), and then causing a double free() by calling essentially tcp_close() twice on the same handle. My guess: you're corrupting memory somewhere, somehow.

regards,

    Mikael

16 nov 2012 kl. 09:28 skrev "Barry Andrews" <address@hidden>:

Hello

 

Trying to get LWIP 1.4.1.1 working with FreeRTOS 7.1.1  runs for a while then gives me the following assertion.

 

Assertion "memp sanity" failed at line 463 in ../lwip_1_4_0/Src/core/memp.c

 

This happens while thrash testing by bulk pinging from a Linux machine to test capabilities.

 

Comments in the file say this means pointers form a circle.

What normally causes this?

What is best approach to debug and fix?

 

My heap should be plenty big enough and no other errors received from memory diags.

 

 

Regards

 

Barry Andrews

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