Date: Sun, 22 Jun 2014 16:45:43 +0000 (UTC) From: Michael Tuexen <tuexen@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: r267733 - stable/10/sys/netinet Message-ID: <201406221645.s5MGjhU9044900@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: tuexen Date: Sun Jun 22 16:45:42 2014 New Revision: 267733 URL: http://svnweb.freebsd.org/changeset/base/267733 Log: MFC r264838: Don't free an mbuf twice. This only happens in very rare error cases where the peer sends illegal sequencing information in DATA chunks for an existing association. Modified: stable/10/sys/netinet/sctp_indata.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/netinet/sctp_indata.c ============================================================================== --- stable/10/sys/netinet/sctp_indata.c Sun Jun 22 16:43:59 2014 (r267732) +++ stable/10/sys/netinet/sctp_indata.c Sun Jun 22 16:45:42 2014 (r267733) @@ -1717,6 +1717,9 @@ failed_pdapi_express_del: stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_15; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); *abort_flag = 1; + if (last_chunk) { + *m = NULL; + } return (0); } else { if (sctp_does_tsn_belong_to_reasm(asoc, control->sinfo_tsn)) { @@ -1733,6 +1736,9 @@ failed_pdapi_express_del: stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_16; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); *abort_flag = 1; + if (last_chunk) { + *m = NULL; + } return (0); } } @@ -1759,6 +1765,9 @@ failed_pdapi_express_del: stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_17; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); *abort_flag = 1; + if (last_chunk) { + *m = NULL; + } return (0); } } @@ -1822,6 +1831,9 @@ failed_pdapi_express_del: } else { sctp_queue_data_to_stream(stcb, asoc, control, abort_flag); if (*abort_flag) { + if (last_chunk) { + *m = NULL; + } return (0); } } @@ -1834,7 +1846,9 @@ failed_pdapi_express_del: * the assoc is now gone and chk was put onto the * reasm queue, which has all been freed. */ - *m = NULL; + if (last_chunk) { + *m = NULL; + } return (0); } }
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201406221645.s5MGjhU9044900>