[lwip-devel] [bug #28064] pbuf_alloc(PBUF_POOL) is not thread-safe

[Simon Goldschmidt]

Follow-up Comment #7, bug #28064 (project lwip):

OK, I didn't think of calling pbuf_alloc() from interrupt context with
NO_SYS==1.

After all, I think the easiest solution is probably to set a flag and let
tcp_tmr free ooseq segments if that flag is set. This would work for both
NO_SYS settings and is thread-safe, although it might be a bit late
(250ms...). Another solution would be to add a sys_timeout in this case, but
that's not thread-safe either (yet?).

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