selftests/bpf: Sanitize pointer prior fclose()

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There are scenarios where env.{sub,}test_state->stdout_saved, can be
NULL, e.g. sometimes when the watchdog timeout kicks in, or if the
open_memstream syscall is not available.

Avoid crashing test_progs by adding an explicit NULL check prior the
fclose() call.

Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20250318081648.122523-1-bjorn@kernel.org

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Björn Töpel 2025-03-18 09:16:47 +01:00 • committed by Andrii Nakryiko

parent 79db658ad1

commit e16e64f9e0

1 changed files with 4 additions and 2 deletions

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tools/testing/selftests/bpf/test_progs.c

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