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Subject[PATCH 3.16 060/157] dccp: Fix memleak in __feat_register_sp
3.16.72-rc1 review patch.  If anyone has any objections, please let me know.

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

From: YueHaibing <yuehaibing@huawei.com>

commit 1d3ff0950e2b40dc861b1739029649d03f591820 upstream.

If dccp_feat_push_change fails, we forget free the mem
which is alloced by kmemdup in dccp_feat_clone_sp_val.

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: e8ef967a54f4 ("dccp: Registration routines for changing feature values")
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/dccp/feat.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

--- a/net/dccp/feat.c
+++ b/net/dccp/feat.c
@@ -738,7 +738,12 @@ static int __feat_register_sp(struct lis
if (dccp_feat_clone_sp_val(&fval, sp_val, sp_len))
return -ENOMEM;

- return dccp_feat_push_change(fn, feat, is_local, mandatory, &fval);
+ if (dccp_feat_push_change(fn, feat, is_local, mandatory, &fval)) {
+ kfree(fval.sp.vec);
+ return -ENOMEM;
+ }
+
+ return 0;
}

/**
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