[lwip-devel] [bug #19167] tcp timeout handler can cause crash being invoked by sys_sem_wait()

[Simon Goldschmidt]

Follow-up Comment #28, bug #19167 (project lwip):

I already proposed this in another thread, but it belongs here:
The original reason for this bug entry was that tcp timeout handler is
invoked while waiting for the heap (or memp) semaphore.

I propose to change all sys_sem_wait(sem) calls in mem.c to
sys_arch_sem_wait(sem, 0) nad to remove the SYS_LIFHGWEIGHT_PROT=0 code in
memp.c, which solves this bug.

If noone objects, I'll commit it soon as there does not seem too much
activity around these things any more ;-)

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