crowdsecurity/crowdsec · error

procid is empty

Error message

procid is empty

What it means

parseProcID scans the PROCID field of an RFC5424 message up to the next space; if the buffer ends (or a space follows immediately without NILVALUE '-') before any character is collected, the mandatory PROCID is missing and the message is invalid per RFC 5424.

Source

Thrown at pkg/acquisition/modules/syslog/internal/parser/rfc5424/parse.go:208

	if r.buf[r.position] == NIL_VALUE {
		r.PID = ""
		r.position += 2
		return nil
	}

	procid := []byte{}
	for r.position < r.len {
		c := r.buf[r.position]
		if c == ' ' {
			r.position++
			break
		}
		procid = append(procid, c)
		r.position++
	}

	if len(procid) == 0 {
		return errors.New("procid is empty")
	}

	if len(procid) > 128 {
		return errors.New("procid is too long")
	}

	r.PID = string(procid)
	return nil
}

func (r *RFC5424) parseMsgID() error {
	if r.buf[r.position] == NIL_VALUE {
		r.MsgID = ""
		r.position += 2
		return nil
	}

	msgid := []byte{}

View on GitHub (pinned to 909b515798)

Solutions

1. Send '-' as PROCID when the sender has no process ID
2. Fix the sender to emit a non-empty PROCID or the NIL value

When it happens

Trigger: Thrown at pkg/acquisition/modules/syslog/internal/parser/rfc5424/parse.go:208 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of crowdsecurity/crowdsec@909b515798 (2026-09-06). Data as JSON: /api/errors/9ff6e75c5ecb8144. Report an issue: GitHub.