[patch 62/71] netfilter: xt_rateest: fix comparison with self

From: Greg KH
Date: Tue Jul 28 2009 - 19:52:05 EST


2.6.30-stable review patch. If anyone has any objections, please let us know.

------------------

From: Patrick McHardy <kaber@xxxxxxxxx>

commit 4d900f9df5f0569c2dc536701e2c11b6d50ebebf upstream.

As noticed by Török Edwin <edwintorok@xxxxxxxxx>:

Compiling the kernel with clang has shown this warning:

net/netfilter/xt_rateest.c:69:16: warning: self-comparison always results in a
constant value
ret &= pps2 == pps2;
^
Looking at the code:
if (info->flags & XT_RATEEST_MATCH_BPS)
ret &= bps1 == bps2;
if (info->flags & XT_RATEEST_MATCH_PPS)
ret &= pps2 == pps2;

Judging from the MATCH_BPS case it seems to be a typo, with the intention of
comparing pps1 with pps2.

http://bugzilla.kernel.org/show_bug.cgi?id=13535

Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
net/netfilter/xt_rateest.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/netfilter/xt_rateest.c
+++ b/net/netfilter/xt_rateest.c
@@ -66,7 +66,7 @@ xt_rateest_mt(const struct sk_buff *skb,
if (info->flags & XT_RATEEST_MATCH_BPS)
ret &= bps1 == bps2;
if (info->flags & XT_RATEEST_MATCH_PPS)
- ret &= pps2 == pps2;
+ ret &= pps1 == pps2;
break;
}



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