bpf: test case for map pointer poison with calls/branches
Add several test cases where the same or different map pointers originate from different paths in the program and execute a map lookup or tail call at a common location. Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net> Acked-by: NAlexei Starovoitov <ast@kernel.org> Acked-by: NSong Liu <songliubraving@fb.com> Signed-off-by: NAlexei Starovoitov <ast@kernel.org>
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