From: Li RongQing <lirongqing@baidu.com>
Date: Tue, 13 Nov 2018 01:16:52 +0000 (+0800)
Subject: net: remove BUG_ON from __pskb_pull_tail
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=982c17b9e3c27389a8d214333c686dab0e95cf63;p=linux.git

net: remove BUG_ON from __pskb_pull_tail

if list is NULL pointer, and the following access of list
will trigger panic, which is same as BUG_ON

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index fcb1155a00ec3..f95ab41c9fb9c 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -1925,8 +1925,6 @@ void *__pskb_pull_tail(struct sk_buff *skb, int delta)
 		struct sk_buff *insp = NULL;
 
 		do {
-			BUG_ON(!list);
-
 			if (list->len <= eat) {
 				/* Eaten as whole. */
 				eat -= list->len;