[LTP] pids: fix cleanup of orphaned pids_task1 children

[linuxtestproject.agent@gmail.com]

Hi Andrea,

On Tue, 16 Jun 2026, Andrea Cervesato wrote:
> pids: fix cleanup of orphaned pids_task1 children
> tst_cgroup: tolerate ESRCH in cgroup_drain()

Verdict - Reviewed

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