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lwip : "recv_tcp: recv for wrong pcb!"

Question asked by miket on Jun 26, 2012
Latest reply on Jun 28, 2012 by miket

BF527 eazykit. VisualDsp++ 5.10

App is created using lwip application template

I have an application which accepts tcp connections on a bf527 side.

Data excahange goes fine  goes fine until connection closes.

I get a kernel panic:

Assertion "recv_tcp: recv for wrong pcb!" failed at line 225 in C:\Program Files\Analog Devices\VisualDSP 5.0\Blackfin\lib\src\lwip\src\api\api_msg.c

Debugger trace is pointing to TCP_EVENT_CLOSE(pcb,err) at line 382 of VisualDSP 5.0/Blackfin/lib/src/lwip/src/core/tcp_in.c

Connection seems to be in TIMED_WAIT state and recv_flags == 0x20

Alltogether is a bit odd  code at line ~206 should have detected the packet destined for that connection and returned.


Are there any known problems or possibly race condition caused by just using debugger? <I do not have breakpoints enabled, load and free run>


Appreciate your thoughts in advance,