Date: Thu, 21 May 2015 08:28:36 +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-10@freebsd.org Subject: svn commit: r283198 - stable/10/sys/kern Message-ID: <201505210828.t4L8Sa4m046940@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
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;
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201505210828.t4L8Sa4m046940>