From acc6d0e223e5dcff183a5dd52019cea1dabd981b Mon Sep 17 00:00:00 2001
From: cao <cao.xuewen@zte.com.cn>
Date: Wed, 9 Nov 2016 08:41:31 +0800
Subject: [PATCH] Fix coverity defects: CID 147629

CID 147629: Type:Dereference before null check

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov
Signed-off-by: <cao.xuewen cao.xuewen@zte.com.cn>
Closes #5376
---
 lib/libuutil/uu_dprintf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/libuutil/uu_dprintf.c b/lib/libuutil/uu_dprintf.c
index 5d5fb84a8..d51fa81e8 100644
--- a/lib/libuutil/uu_dprintf.c
+++ b/lib/libuutil/uu_dprintf.c
@@ -68,7 +68,8 @@ uu_dprintf_create(const char *name, uu_dprintf_severity_t severity,
 {
 	uu_dprintf_t *D;
 
-	if (uu_check_name(name, UU_NAME_DOMAIN) == -1) {
+	if (name != NULL &&
+	    uu_check_name(name, UU_NAME_DOMAIN) == -1) {
 		uu_set_error(UU_ERROR_INVALID_ARGUMENT);
 		return (NULL);
 	}