Hi, In case of a Multicore cpu system running a multithreaded process.
For protocol control blocks there is no protection provided in the FreeBSD 9. For example, udp_close() and udp_send() access the inp before taking the lock. Couldn't this cause the inp inconsistency on a multithreaded process running on multicore cpu system? Say, If the two threads of a process are concurrently executing socket send and socket close say on a udp connection (this can happen in case of poorly written user code.). udp_close() will access the inp on one cpu and udp_send() will access the inp on another cpu. it is possible that udp_close() gets the locks first and free's the inp before udp_send() has a chance to run? Am I missing anything? Thanks, Vasanth _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
