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

------------------
From: Chris Wright <chrisw@sous-sol.org>
[ Upstream commit: 19443178fbfbf40db15c86012fc37df1a44ab857 ]

dccp_feat_change() validates length and on error is returning 1.
This happens to work since call chain is checking for 0 == success,
but this is returned to userspace, so make it a real error value.

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 net/dccp/feat.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/dccp/feat.c
+++ b/net/dccp/feat.c
@@ -32,7 +32,7 @@ int dccp_feat_change(struct dccp_minisoc
 
 	if (len > 3) {
 		DCCP_WARN("invalid length %d\n", len);
-		return 1;
+		return -EINVAL;
 	}
 	/* XXX add further sanity checks */
 
-- 
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原文链接: http://lkml.org/lkml/2008/5/13/388
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