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

[Simon Goldschmidt]

Follow-up Comment #31, bug #19167 (project lwip):

>So, to be sure, you use your patch file #12142 ?

No, since at least on file in CVS relies on timeouts with sys_sem_wait (and
dmitry seems, too, so other might also).

>You just change memp.c ?

I would
- remove all semaphores from memp.c. Primarily since that is the opposite pf
what pbuf.c does, but with the nice side-effect of also solving _this_ bug.
- change mem.c to call sys_arch_sem_wait instead of sys_sem_wait to prevent
timeouts running in a state they shouldn't

The rest of the sys_sem_wait calls are in src/api and are called in
application context. What the 'user' does here is not our problem.

OK?


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