Date: Thu, 8 Sep 2016 01:02:53 +0000 (UTC) From: Kevin Lo <kevlo@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r305575 - head/sys/kern Message-ID: <201609080102.u8812rWA067131@repo.freebsd.org>
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Author: kevlo Date: Thu Sep 8 01:02:53 2016 New Revision: 305575 URL: https://svnweb.freebsd.org/changeset/base/305575 Log: In m_devget(), if the data fits in a packet header mbuf, check the amount of data is less than or equal to MHLEN instead of MLEN when placing initial small packet header at end of mbuf. Reviewed by: glebius MFC after: 3 days Modified: head/sys/kern/uipc_mbuf.c Modified: head/sys/kern/uipc_mbuf.c ============================================================================== --- head/sys/kern/uipc_mbuf.c Thu Sep 8 00:38:50 2016 (r305574) +++ head/sys/kern/uipc_mbuf.c Thu Sep 8 01:02:53 2016 (r305575) @@ -984,7 +984,7 @@ m_devget(char *buf, int totlen, int off, len = MHLEN; /* Place initial small packet/header at end of mbuf */ - if (m && totlen + off + max_linkhdr <= MLEN) { + if (m && totlen + off + max_linkhdr <= MHLEN) { m->m_data += max_linkhdr; len -= max_linkhdr; }
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