selftests/bpf: precision of a NULL global subprogram memory argument

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Check that mark_chain_precision() is called for a NULL pointer passed
as a nullable pointer argument of a global subprogram.
(Pointer arguments of the global subprograms are nullable by default).

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-4-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Eduard Zingerman 2026-09-04 17:05:55 -07:00 • committed by Alexei Starovoitov

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commit 100f4cc0d5

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

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