[LTP] aio_cancel: Fix incorrect strerror() usage

[linuxtestproject.agent@gmail.com]

Hi Martin,

--- [PATCH 2/2] ---

On Wed, 29 Apr 2026 16:53:12 +0200, Martin Doucha wrote:
> aio_cancel_6-1: Rewrite test
>
> The test schedules multiple async writes into a file and then hopes that
> at least one will block long enough that aio_cancel() will cancel it.
> [...]
> This fixes a race condition where aio_cancel() could be called after the
> target write has already finished. [...]
>
> Signed-off-by: Martin Doucha <mdoucha@suse.cz>

The commit body says this fixes a race condition, so a Fixes: tag is
required. Patch 1/2 in this same series correctly uses Fixes: tags for
analogous rewrite-as-bugfix commits to 5-1.c and 7-1.c. Please add a
Fixes: referencing the commit that introduced the original 6-1.c.

Pre-existing issues noticed in the surrounding code (not introduced
by this patch):

- aio_cancel/5-1.c — Uses nanosleep() in a spin-wait loop for
  synchronization.

---
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