net: hns3: add a check for index in hclge_get_rss_key()
[ Upstream commit 532cfc0d ] The index is received from vf, if use it directly, an out-of-bound issue may be caused, so add a check for this index before using it in hclge_get_rss_key(). Fixes: a638b1d8 ("net: hns3: fix get VF RSS issue") Signed-off-by: Yufeng Mo <moyufeng@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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