selftests/bpf: Add tests for the arena offset of globals

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Add tests for the new libbpf globals arena offset logic. The
tests cover the case of globals being as large as the arena
itself, and being smaller than the arena. In that case, the
data is placed at the end of the arena, and the beginning
of the arena is free.

Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20251216173325.98465-6-emil@etsalapatis.com

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Emil Tsalapatis 2025-12-16 12:33:25 -05:00 • committed by Andrii Nakryiko

parent c1f61171d4

commit 19f12431b6

3 changed files with 140 additions and 0 deletions

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4

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

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tools/testing/selftests/bpf/progs/verifier_arena_globals1.c

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tools/testing/selftests/bpf/progs/verifier_arena_globals2.c

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