[PATCH 4.9 060/101] bpf: Prevent memory disambiguation attack

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Alexei Starovoitov commit af86ca4e3088fe5eacf2f7e58c01fa68ca067672 upstream. Detect code patterns where malicious 'speculative store bypass' can be used and sanitize such patterns. 39: (bf)

[PATCH 4.9 060/101] bpf: Prevent memory disambiguation attack

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Alexei Starovoitov commit af86ca4e3088fe5eacf2f7e58c01fa68ca067672 upstream. Detect code patterns where malicious 'speculative store bypass' can be used and sanitize such patterns. 39: (bf)