bpf: test case to check whether src/dst regs got mangled by xadd

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We currently do not have such a test case in test_verifier selftests
but it's important to test under bpf_jit_enable=1 to make sure JIT
implementations do not mistakenly mess with src/dst reg for xadd/{w,dw}.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Daniel Borkmann 2018-07-19 18:18:36 +02:00 • committed by Alexei Starovoitov

parent b9c1e60e7b

commit fa47a16b04

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tools/testing/selftests/bpf/test_verifier.c

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