Date: Mon, 24 Aug 2020 08:32:16 +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-12@freebsd.org Subject: svn commit: r364624 - stable/12/sys/netinet Message-ID: <202008240832.07O8WG8S074704@repo.freebsd.org>
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Author: tuexen Date: Mon Aug 24 08:32:16 2020 New Revision: 364624 URL: https://svnweb.freebsd.org/changeset/base/364624 Log: MFC r362581: Fix the acconting for fragmented unordered messages when using interleaving. This was reported for the userland stack in https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19321 Modified: stable/12/sys/netinet/sctp_indata.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/netinet/sctp_indata.c ============================================================================== --- stable/12/sys/netinet/sctp_indata.c Mon Aug 24 08:30:36 2020 (r364623) +++ stable/12/sys/netinet/sctp_indata.c Mon Aug 24 08:32:16 2020 (r364624) @@ -1111,6 +1111,16 @@ sctp_deliver_reasm_check(struct sctp_tcb *stcb, struct #endif SCTP_STAT_INCR_COUNTER64(sctps_reasmusrmsgs); TAILQ_REMOVE(&strm->uno_inqueue, control, next_instrm); + if (asoc->size_on_all_streams >= control->length) { + asoc->size_on_all_streams -= control->length; + } else { +#ifdef INVARIANTS + panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length); +#else + asoc->size_on_all_streams = 0; +#endif + } + sctp_ucount_decr(asoc->cnt_on_all_streams); control->on_strm_q = 0; } if (control->on_read_q == 0) { @@ -1391,7 +1401,7 @@ sctp_queue_data_for_reasm(struct sctp_tcb *stcb, struc } /* Must be added to the stream-in queue */ if (created_control) { - if (unordered == 0) { + if ((unordered == 0) || (asoc->idata_supported)) { sctp_ucount_incr(asoc->cnt_on_all_streams); } if (sctp_place_control_in_stream(strm, asoc, control)) {
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