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Subject[RFC] netfilter: cttimeout: remove VLA in ctnl_timeout_parse_policy
In preparation to enabling -Wvla, remove VLA and replace it
with dynamic memory allocation.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
net/netfilter/nfnetlink_cttimeout.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c
index 95b0470..a2f7d92 100644
--- a/net/netfilter/nfnetlink_cttimeout.c
+++ b/net/netfilter/nfnetlink_cttimeout.c
@@ -52,18 +52,26 @@ ctnl_timeout_parse_policy(void *timeouts,
struct net *net, const struct nlattr *attr)
{
int ret = 0;
+ struct nlattr **tb = NULL;

if (likely(l4proto->ctnl_timeout.nlattr_to_obj)) {
- struct nlattr *tb[l4proto->ctnl_timeout.nlattr_max+1];
+ tb = kcalloc(l4proto->ctnl_timeout.nlattr_max + 1, sizeof(*tb),
+ GFP_KERNEL);
+
+ if (!tb)
+ return -ENOMEM;

ret = nla_parse_nested(tb, l4proto->ctnl_timeout.nlattr_max,
attr, l4proto->ctnl_timeout.nla_policy,
NULL);
if (ret < 0)
- return ret;
+ goto err;

ret = l4proto->ctnl_timeout.nlattr_to_obj(tb, net, timeouts);
}
+
+err:
+ kfree(tb);
return ret;
}

--
2.7.4
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