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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>
This commit is contained in:
Leigh Brown 2006-12-17 17:12:30 -08:00 committed by David S. Miller
parent d8172d822f
commit 8228a18dd3
1 changed files with 1 additions and 0 deletions
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1
net/ipv4/tcp_ipv4.c
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@ -928,6 +928,7 @@ int tcp_v4_md5_do_del(struct sock *sk, __be32 addr)
if (tp->md5sig_info->entries4 == 0) {
kfree(tp->md5sig_info->keys4);
tp->md5sig_info->keys4 = NULL;
tp->md5sig_info->alloced4 = 0;
} else if (tp->md5sig_info->entries4 != i) {
/* Need to do some manipulation */
memcpy(&tp->md5sig_info->keys4[i],