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Andrii Nakryiko authored
Test that frozen and mmap()'ed BPF map can't be mprotect()'ed as writable or executable memory. Also validate that "downgrading" from writable to read-only doesn't screw up internal writable count accounting for the purposes of map freezing. Signed-off-by:
Andrii Nakryiko <andriin@fb.com> Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200410202613.3679837-2-andriin@fb.com
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