[lwip-devel] [patch #9172] netif: Simplify netif_poll implementation

[Dirk Ziegelmeier]

Follow-up Comment #3, patch #9172 (project lwip):

It's not about the while() loop. Problem is:

1) while(netif->loop_first != NULL)
2) Enter loop
3) netif->loop_first becomes NULL from another thread
4) in = in_end = netif->loop_first
5) NULL pointer dereference

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