Subject: disable m_dup()
To: None <>
From: Jun-ichiro itojun Hagino <>
List: tech-net
Date: 08/18/2000 23:06:13
	i found rather serious false assumption in sys/kern/uipc_mbuf.c:m_dup().
	i would like to disable the function for safety (wrap by #if 0).
	are there anyone using the function?

	the false assumption: if a mbuf has M_EXT bit raised,
	m_ext.ext_siz == MCLBYTES (cluster memory region allocated via MCLGET).
	the assumption does not hold