selftests/bpf: Make align selftests more robust

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Align subtest is very specific and finicky about expected verifier log
output and format. This is often completely unnecessary as in a bunch of
situations test actually cares about var_off part of register state. But
given how exact it is right now, any tiny verifier log changes can lead
to align tests failures, requiring constant adjustment.

This patch tries to make this a bit more robust by making logic first
search for specified register and then allowing to match only portion of
register state, not everything exactly. This will come handly with
follow up changes to SCALAR register output disambiguation.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20231011223728.3188086-4-andrii@kernel.org

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Andrii Nakryiko 2023-10-11 15:37:26 -07:00 • committed by Daniel Borkmann

parent 08a7078fea

commit cde7851428

1 changed files with 121 additions and 120 deletions

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tools/testing/selftests/bpf/prog_tests/align.c

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