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| author | Alexander Drozdov <al.drozdov@gmail.com> | 2015-02-17 13:33:46 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-20 15:22:38 -0500 |
| commit | fba04a9e0c869498889b6445fd06cbe7da9bb834 (patch) | |
| tree | 99c9b8245ae17b6d8f6ff04e2c5f989de26b03f5 | |
| parent | 42c972a1f390e3bc51ca1e434b7e28764992067f (diff) | |
| download | linux-fba04a9e0c869498889b6445fd06cbe7da9bb834.tar.gz linux-fba04a9e0c869498889b6445fd06cbe7da9bb834.tar.bz2 linux-fba04a9e0c869498889b6445fd06cbe7da9bb834.zip | |
ipv4: ip_check_defrag should correctly check return value of skb_copy_bits
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>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/ip_fragment.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index e5b6d0ddcb58..2c8d98e728c0 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) |