From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 28 Mar 2018 14:48:36 +0300
Subject: test_bpf: Fix NULL vs IS_ERR() check in test_skb_segment()
Patch-mainline: v4.17-rc1
Git-commit: 99fe29d3a25f813146816b322367b4c6a0fdec84
References: bsc#1109837

The skb_segment() function returns error pointers on error.  It never
returns NULL.

Fixes: 76db8087c4c9 ("net: bpf: add a test for skb_segment in test_bpf module")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Yonghong Song <yhs@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 lib/test_bpf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -6649,7 +6649,7 @@ static __init int test_skb_segment(void)
 	}
 
 	segs = skb_segment(skb, features);
-	if (segs) {
+	if (!IS_ERR(segs)) {
 		kfree_skb_list(segs);
 		ret = 0;
 		pr_info("%s: success in skb_segment!", __func__);