Author: ae
Date: Thu May 21 08:28:35 2015
New Revision: 283198
URL: https://svnweb.freebsd.org/changeset/base/283198
Log:
MFC r282594:
m_dup() is supposed to give a writable copy of an mbuf chain. It uses
m_dup_pkthdr(), that uses M_COPYFLAGS mask to copy m_flags field.
If original mbuf chain has M_RDONLY flag, its copy also will have it.
Reset this flag explicitly.
Modified:
stable/10/sys/kern/uipc_mbuf.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/kern/uipc_mbuf.c
==============================================================================
--- stable/10/sys/kern/uipc_mbuf.c Thu May 21 08:26:24 2015
(r283197)
+++ stable/10/sys/kern/uipc_mbuf.c Thu May 21 08:28:35 2015
(r283198)
@@ -934,6 +934,7 @@ m_dup(struct mbuf *m, int how)
}
if ((n->m_flags & M_EXT) == 0)
nsize = MHLEN;
+ n->m_flags &= ~M_RDONLY;
}
n->m_len = 0;
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