[Bug 172675] [netinet] [patch] sysctl_tcp_hc_list (net.inet.tcp.hostcache.list) race condition causing memory corruption

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=172675

--- Comment #5 from Anton Yuzhaninov <citrin+pr at citrin.ru> ---
Race in cache_count change is still not fixed after more than two years :(

atomic_add_int / atomic_subtract_int is expensive operations. Better to use
counter(9) API.

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