Date: Thu, 21 May 2015 08:32:53 +0000 (UTC) From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r283200 - stable/9/sys/kern Message-ID: <201505210832.t4L8WrGv051224@svn.freebsd.org>
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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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