Daan De Meyer
6a02f8893c
swtpm_find_best_profile() keeps the swtpm_setup --print-profiles child in a PidRef that is only closed on return. If the wait fails, the child is neither killed nor reaped. On a fiber this happens whenever the fiber is cancelled during the wait. Kill and reap the child in the cleanup, like other helpers that fork short lived children do. Drop the PidRef before the cleanup when the wait reports an exit status, a child killed by a signal, or a child that is already gone. Otherwise the cleanup would send SIGKILL to a PID that another process might use by now, if no pidfd was available.
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