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Date:      Fri, 8 Mar 2019 18:17:57 +0000 (UTC)
From:      Michael Tuexen <tuexen@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r344925 - head/sys/netinet
Message-ID:  <201903081817.x28IHvrJ037560@repo.freebsd.org>
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Author: tuexen
Date: Fri Mar  8 18:17:57 2019
New Revision: 344925
URL: https://svnweb.freebsd.org/changeset/base/344925

Log:
  Fix locking bug.
  
  MFC after:		3 days

Modified:
  head/sys/netinet/sctp_usrreq.c

Modified: head/sys/netinet/sctp_usrreq.c
==============================================================================
--- head/sys/netinet/sctp_usrreq.c	Fri Mar  8 18:16:19 2019	(r344924)
+++ head/sys/netinet/sctp_usrreq.c	Fri Mar  8 18:17:57 2019	(r344925)
@@ -4069,10 +4069,12 @@ sctp_setopt(struct socket *so, int optname, void *optv
 			}
 			SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 			if (stcb) {
+				SCTP_TCB_SEND_LOCK(stcb);
 				stcb->asoc.ss_functions.sctp_ss_clear(stcb, &stcb->asoc, 1, 1);
 				stcb->asoc.ss_functions = sctp_ss_functions[av->assoc_value];
 				stcb->asoc.stream_scheduling_module = av->assoc_value;
 				stcb->asoc.ss_functions.sctp_ss_init(stcb, &stcb->asoc, 1);
+				SCTP_TCB_SEND_UNLOCK(stcb);
 				SCTP_TCB_UNLOCK(stcb);
 			} else {
 				if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
@@ -4088,10 +4090,12 @@ sctp_setopt(struct socket *so, int optname, void *optv
 					SCTP_INP_RLOCK(inp);
 					LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 						SCTP_TCB_LOCK(stcb);
+						SCTP_TCB_SEND_LOCK(stcb);
 						stcb->asoc.ss_functions.sctp_ss_clear(stcb, &stcb->asoc, 1, 1);
 						stcb->asoc.ss_functions = sctp_ss_functions[av->assoc_value];
 						stcb->asoc.stream_scheduling_module = av->assoc_value;
 						stcb->asoc.ss_functions.sctp_ss_init(stcb, &stcb->asoc, 1);
+						SCTP_TCB_SEND_UNLOCK(stcb);
 						SCTP_TCB_UNLOCK(stcb);
 					}
 					SCTP_INP_RUNLOCK(inp);

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