Author: ae
Date: Thu May 21 08:32:52 2015
New Revision: 283200
URL: https://svnweb.freebsd.org/changeset/base/283200
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/9/sys/kern/uipc_mbuf.c
Directory Properties:
stable/9/sys/ (props changed)
Modified: stable/9/sys/kern/uipc_mbuf.c
==============================================================================
--- stable/9/sys/kern/uipc_mbuf.c Thu May 21 08:28:48 2015
(r283199)
+++ stable/9/sys/kern/uipc_mbuf.c Thu May 21 08:32:52 2015
(r283200)
@@ -867,6 +867,7 @@ 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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