selftests/bpf: adjust global_func15 test to validate prog exit precision

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Add one more subtest to  global_func15 selftest to validate that
verifier properly marks r0 as precise and avoids erroneous state pruning
of the branch that has return value outside of expected [0, 1] value.

Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20231202175705.885270-11-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Andrii Nakryiko 2023-12-02 09:57:04 -08:00 • committed by Alexei Starovoitov

parent e02dea158d

commit 5c19e1d05e

1 changed files with 32 additions and 0 deletions

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tools/testing/selftests/bpf/progs/test_global_func15.c

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