From b89e25f0db8bd416674e32555421c01e861d541e Mon Sep 17 00:00:00 2001
From: Michael Tuexen <tuexen@FreeBSD.org>
Date: Sat, 7 Sep 2019 11:24:29 +0000
Subject: [PATCH] MFC r350254:

Don't hold a mutex while calling sbwait. This was found by syzkaller.

Submitted by:		rrs@
Reported by:		markj@
---
 sys/netinet/sctp_output.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sys/netinet/sctp_output.c b/sys/netinet/sctp_output.c
index 6a28d8b0660..7a1575d0216 100644
--- a/sys/netinet/sctp_output.c
+++ b/sys/netinet/sctp_output.c
@@ -13409,10 +13409,10 @@ sctp_lower_sosend(struct socket *so,
 					    stcb,
 					    SCTP_OUTPUT_FROM_USR_SEND, SCTP_SO_LOCKED);
 				}
-				if (hold_tcblock == 1) {
-					SCTP_TCB_UNLOCK(stcb);
-					hold_tcblock = 0;
-				}
+			}
+			if (hold_tcblock == 1) {
+				SCTP_TCB_UNLOCK(stcb);
+				hold_tcblock = 0;
 			}
 			SOCKBUF_LOCK(&so->so_snd);
 			/*-
-- 
2.45.0