diff --git a/sys/kern/kern_jail.c b/sys/kern/kern_jail.c
--- a/sys/kern/kern_jail.c
+++ b/sys/kern/kern_jail.c
@@ -4017,6 +4017,11 @@
 	case PRIV_PROC_SETLOGIN:
 	case PRIV_PROC_SETRLIMIT:
 
+		/*
+		 * Debuggers should work in jails.
+		 */
+	case PRIV_PROC_MEM_WRITE:
+
 		/*
 		 * System V and POSIX IPC privileges are granted in jail.
 		 */