diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c
--- a/sys/kern/kern_sig.c
+++ b/sys/kern/kern_sig.c
@@ -4253,6 +4253,9 @@
 	}
 	devctl_safe_quote_sb(sb, name);
 	sbuf_putc(sb, '"');
+
+	sbuf_printf(sb, " jid=%d pid=%d ppid=%d signo=%d",
+	    p->p_ucred->cr_prison->pr_id, p->p_pid, p->p_pptr->p_pid, p->p_sig);
 	if (sbuf_finish(sb) == 0)
 		devctl_notify("kernel", "signal", "coredump", sbuf_data(sb));
 out2: