[lwip-devel] [bug #47334] 6LoWPAN crashes on reassembly of high payload lengths

[Martine Lenders]

URL:
  <http://savannah.nongnu.org/bugs/?47334>

                 Summary: 6LoWPAN crashes on reassembly of high payload
lengths
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: authmillenon
            Submitted on: Fri 04 Mar 2016 03:53:53 AM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: Crash Error
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 
            lwIP version: git head

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Details:

For an evaluation of several stacks I flood the stacks (admittedly with a
virtual network device so next to no delay compared to realistic situations).
After the introduction of 6LoWPAN to your stack last week I also considered
it, but currently I need to set the `MEM_SIZE` value (with `LWIP_USE_POOLS`)
to a comparably very big value (10592 + stack size for TCP/IP thread for a
Cortex-M platform [this one: https://www.iot-lab.info/hardware/m3/, but I also
saw the same behavior this one]). Otherwise, the stack can't reassemble the
packet since it runs out of memory or some cases even crashes.




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