Re: [PATCH bpf] selftests/bpf: test ringbuf mmap read-only and read-write restrictions

On Fri, May 14, 2021 at 1:11 PM Andrii Nakryiko [off-list ref] wrote:

Extend ringbuf selftest to validate read/write and read-only restrictions on
memory mapping consumer/producer/data pages. Ensure no "escalations" from
PROT_READ to PROT_WRITE/PROT_EXEC is allowed. And test that mremap() fails to
expand mmap()'ed area.

Signed-off-by: Thadeu Lima de Souza Cascardo <redacted>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>

Applied.