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[NETLINK]: Fix RTA_NEST_CANCEL(). 

Only skb_trim() if 'start' is non-NULL.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf 2005-06-18 22:51:26 -07:00 committed by David S. Miller
parent 88121aea7b
commit c52a3f89f8
1 changed files with 2 additions and 1 deletions
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3
include/linux/rtnetlink.h
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@ -924,7 +924,8 @@ extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const voi
(skb)->len; }) (skb)->len; })
#define RTA_NEST_CANCEL(skb, start) \ #define RTA_NEST_CANCEL(skb, start) \
({ skb_trim(skb, (unsigned char *) (start) - (skb)->data); \ ({ if (start) \
skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
-1; }) -1; })
#define RTA_GET_U32(rta) \ #define RTA_GET_U32(rta) \