Messages in this thread Patch in this message | | | Date | Tue, 6 Mar 2018 12:47:55 -0600 | From | "Gustavo A. R. Silva" <> | Subject | [RFC] netfilter: cttimeout: remove VLA in ctnl_timeout_parse_policy |
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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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