Messages in this thread Patch in this message |  | | From | Alexander Drozdov <> | Subject | [PATCH] ipv4: ip_check_defrag should correctly check return value of skb_copy_bits | Date | Tue, 17 Feb 2015 13:33:46 +0300 |
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skb_copy_bits() returns zero on success and negative value on error, so it is needed to invert the condition in ip_check_defrag().
Fixes: 1bf3751ec90c ("ipv4: ip_check_defrag must not modify skb before unsharing") Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com> --- net/ipv4/ip_fragment.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index e5b6d0d..2c8d98e 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -664,7 +664,7 @@ struct sk_buff *ip_check_defrag(struct sk_buff *skb, u32 user) if (skb->protocol != htons(ETH_P_IP)) return skb; - if (!skb_copy_bits(skb, 0, &iph, sizeof(iph))) + if (skb_copy_bits(skb, 0, &iph, sizeof(iph)) < 0) return skb; if (iph.ihl < 5 || iph.version != 4) -- 1.9.1
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