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

[Martine Lenders]

Follow-up Comment #15, bug #47334 (project lwip):

> What I don't understand is what does MEM_SIZE have to do with it? RX pbufs
should be allocated as PBUF_POOL, which has nothing to do with MEM_SIZE. Could
it be that you allocate RX pbufs as PBUF_RAM and allocate them much bigger
than the 127 bytes required for 6lowpan?

All I do to the packet buffer is allocating a received packet as PBUF_POOL (of
exactly the length it is, which can't go over 125 (excluding FCS) for a IEEE
802.15.4 radio):
https://github.com/RIOT-OS/RIOT/pull/3551/files#diff-6629cafbf0fc4d482ccec31da7bb62bdR200
anything doesn't use lwIP's packet buffer (sizeof(_tmp_buf) is 127 in my
applications context btw). Where else is the data stored if not in the memory
(which size is determined by MEM_SIZE). What's the stuff in mem for then if
not for allocating stuff like packets?

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