[LTP] Make ioctl_pidfd02 valgrind-compliant

[linuxtestproject.agent@gmail.com]

Hi Martin,

On Wed, 15 Apr 2026 10:03:44 +0200, Martin Cermak wrote:
> Make ioctl_pidfd02 valgrind-compliant

[...]

> This patch sets the parent_tidptr explicitly, making valgrind happy.

This is a bug fix; please add a Fixes: tag referencing the commit that
originally introduced the raw clone() fallback without the parent_tidptr
argument.

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