selftests/bpf: Fix incorrect error checking for pthread_create

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pthread_create returns 0 on success and a positive error code on failure;
it never returns a negative value. The current conditional branch can never be taken.
Failures during thread creation are silently ignored, which will lead to
invalid memory access when waiting on threads or dereferencing thread handles later.

Fixes: 91b2c0afd0 ("selftests/bpf: Add parallelism to test_progs")
Signed-off-by: Feng Yang <yangfeng@kylinos.cn>
Link: https://lore.kernel.org/bpf/20260723085100.482147-3-yangfeng59949@163.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

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Feng Yang 2026-07-23 16:50:57 +08:00 • committed by Kumar Kartikeya Dwivedi

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commit b04b8d4e19

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tools/testing/selftests/bpf/test_progs.c

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