[Bug 209475] pf didn't check if enough free RAM for net.pf.states_hashsize

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209475

--- Comment #25 from Kristof Provost <kp at freebsd.org> ---
(In reply to fehmi noyan isi from comment #24)
I'd change the error message ('invalid states hashtable size(%lu)', and
friends) to say there's not enough memory. It's not so much that the value is
incorrect, just that it's more than we have memory for.

What crash are you seeing? Note that mallocarray() will panic if you trigger an
integer overflow, which could well happen with 2147483648 on a 32-bit machine.

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