The check looks plausible, but when I started checking whether it needs to be lowered for the recent changes, I realized that it doesn't make much sense. context_parse_iovw() is called from a few places, e.g.: - process_socket(), where the other side controls the contents of the message. We already do other checks on the correctness of the message and this assert is not needed. - gather_pid_metadata_from_argv(), which is called after inserting MESSAGE_ID= and PRIORITY= into the array, so there is no direct relation between _META_ARGV_MAX and the number of args in the iovw. - gather_pid_metadata_from_procfs(), where we insert a bazillion fields, but without any relation to _META_ARGV_MAX. Since we already separately check if the required stuff was set, drop this misleading check.
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