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fba04a9e0c
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>