From owner-svn-src-all@freebsd.org Sat May 4 12:54:25 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3140B158DAC1; Sat, 4 May 2019 12:54:25 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id CDB8089121; Sat, 4 May 2019 12:54:24 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id A8B31894C; Sat, 4 May 2019 12:54:24 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x44CsOGb088262; Sat, 4 May 2019 12:54:24 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x44CsOcQ088261; Sat, 4 May 2019 12:54:24 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201905041254.x44CsOcQ088261@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Sat, 4 May 2019 12:54:24 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r347118 - stable/12/sys/netinet X-SVN-Group: stable-12 X-SVN-Commit-Author: tuexen X-SVN-Commit-Paths: stable/12/sys/netinet X-SVN-Commit-Revision: 347118 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: CDB8089121 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.95)[-0.952,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 04 May 2019 12:54:25 -0000 Author: tuexen Date: Sat May 4 12:54:24 2019 New Revision: 347118 URL: https://svnweb.freebsd.org/changeset/base/347118 Log: MFC r345504: Improve locking when tearing down an SCTP association. This is joint work with rrs@ and the issue was found by syzkaller. Modified: stable/12/sys/netinet/sctp_pcb.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/netinet/sctp_pcb.c ============================================================================== --- stable/12/sys/netinet/sctp_pcb.c Sat May 4 12:52:24 2019 (r347117) +++ stable/12/sys/netinet/sctp_pcb.c Sat May 4 12:54:24 2019 (r347118) @@ -4982,6 +4982,7 @@ sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tc * in case. */ /* anything on the wheel needs to be removed */ + SCTP_TCB_SEND_LOCK(stcb); for (i = 0; i < asoc->streamoutcnt; i++) { struct sctp_stream_out *outs; @@ -4990,7 +4991,7 @@ sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tc TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) { atomic_subtract_int(&asoc->stream_queue_cnt, 1); TAILQ_REMOVE(&outs->outqueue, sp, next); - stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 0); + stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 1); sctp_free_spbufspace(stcb, asoc, sp); if (sp->data) { if (so) { @@ -5012,6 +5013,7 @@ sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tc sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED); } } + SCTP_TCB_SEND_UNLOCK(stcb); /* sa_ignore FREED_MEMORY */ TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) { TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);