Date: Wed, 31 Mar 2010 20:37:44 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r206000 - head/sys/netgraph Message-ID: <201003312037.o2VKbiPe015581@svn.freebsd.org>
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Author: mav Date: Wed Mar 31 20:37:44 2010 New Revision: 206000 URL: http://svn.freebsd.org/changeset/base/206000 Log: Make ng_ppp fulfill upper protocol stack layers alignment requirements on platforms with strict alignment constraints. This fixes kernel panics on arm and probably other architectures. PR: sparc64/80410 Modified: head/sys/netgraph/ng_ppp.c Modified: head/sys/netgraph/ng_ppp.c ============================================================================== --- head/sys/netgraph/ng_ppp.c Wed Mar 31 20:15:20 2010 (r205999) +++ head/sys/netgraph/ng_ppp.c Wed Mar 31 20:37:44 2010 (r206000) @@ -907,7 +907,21 @@ ng_ppp_proto_recv(node_p node, item_p it const priv_p priv = NG_NODE_PRIVATE(node); hook_p outHook = NULL; int error; +#ifdef ALIGNED_POINTER + struct mbuf *m, *n; + NGI_GET_M(item, m); + if (!ALIGNED_POINTER(mtod(m, caddr_t), uint32_t)) { + n = m_defrag(m, M_NOWAIT); + if (n == NULL) { + m_freem(m); + NG_FREE_ITEM(item); + return (ENOBUFS); + } + m = n; + } + NGI_M(item) = m; +#endif /* ALIGNED_POINTER */ switch (proto) { case PROT_IP: if (priv->conf.enableIP)
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