Merge branch 'net-socket-Fix-potential-spectre-v1-gadgets'

Jeremy Cline says:

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net: socket: Fix potential spectre v1 gadgets

This fixes a pair of potential spectre v1 gadgets.

Note that because the speculation window is large, the policy is to stop
the speculative out-of-bounds load and not worry if the attack can be
completed with a dependent load or store[0].

[0] https://marc.info/?l=linux-kernel&m=152449131114778


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Signed-off-by: David S. Miller <davem@davemloft.net>