From 86f05ea6cf407e42c8c0dec4d5753fcbe5780d87 Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Mon, 26 Jan 2015 16:32:41 +0000
Subject: [PATCH] Lock the socket buffer before jumping to the 'out' label if
 sblock() fails in t4_soreceive_ddp().

---
 sys/dev/cxgbe/tom/t4_ddp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/dev/cxgbe/tom/t4_ddp.c b/sys/dev/cxgbe/tom/t4_ddp.c
index d09d3131ca4..6908de93ff1 100644
--- a/sys/dev/cxgbe/tom/t4_ddp.c
+++ b/sys/dev/cxgbe/tom/t4_ddp.c
@@ -1057,9 +1057,9 @@ t4_soreceive_ddp(struct socket *so, struct sockaddr **psa, struct uio *uio,
 
 	/* Prevent other readers from entering the socket. */
 	error = sblock(sb, SBLOCKWAIT(flags));
+	SOCKBUF_LOCK(sb);
 	if (error)
 		goto out;
-	SOCKBUF_LOCK(sb);
 
 	/* Easy one, no space to copyout anything. */
 	if (uio->uio_resid == 0) {