bpf: Clarify get_outer_instance() handling in propagate_to_outer_instance()

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propagate_to_outer_instance() calls get_outer_instance() and uses the
returned pointer to reset and commit stack write marks. Under normal
conditions, update_instance() guarantees that an outer instance exists,
so get_outer_instance() cannot return an ERR_PTR.

However, explicitly checking for IS_ERR(outer_instance) makes this code
more robust and self-documenting. It reduces cognitive load when reading
the control flow and silences potential false-positive reports from
static analysis or automated tooling.

No functional change intended.

Signed-off-by: Shardul Bankar <shardulsb08@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20251021080849.860072-1-shardulsb08@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Shardul Bankar 2025-10-21 13:38:46 +05:30 • committed by Alexei Starovoitov

parent 04a899573f

commit 96d31dff3f

1 changed files with 2 additions and 0 deletions

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kernel/bpf/liveness.c

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