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[TCP]: Fix oops caused by tcp_v4_md5_do_del
md5sig_info.alloced4 must be set to zero when freeing keys4, otherwise it will not be alloc'd again when another key is added to the same socket by tcp_v4_md5_do_add. Signed-off-by: Leigh Brown <leigh@solinno.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -928,6 +928,7 @@ int tcp_v4_md5_do_del(struct sock *sk, __be32 addr)
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if (tp->md5sig_info->entries4 == 0) {
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kfree(tp->md5sig_info->keys4);
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tp->md5sig_info->keys4 = NULL;
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tp->md5sig_info->alloced4 = 0;
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} else if (tp->md5sig_info->entries4 != i) {
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/* Need to do some manipulation */
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memcpy(&tp->md5sig_info->keys4[i],
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