hv_netvsc: Add check for kvmalloc_array
mainline inclusion from mainline-v5.17 commit 886e44c9 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I6694H CVE: CVE-2022-3107 -------------------------------- As the potential failure of the kvmalloc_array(), it should be better to check and restore the 'data' if fails in order to avoid the dereference of the NULL pointer. Fixes: 6ae74671 ("hv_netvsc: Add per-cpu ethtool stats for netvsc") Signed-off-by: NJiasheng Jiang <jiasheng@iscas.ac.cn> Link: https://lore.kernel.org/r/20220314020125.2365084-1-jiasheng@iscas.ac.cnSigned-off-by: NJakub Kicinski <kuba@kernel.org> Signed-off-by: NBaisong Zhong <zhongbaisong@huawei.com> Reviewed-by: NLiu Jian <liujian56@huawei.com> Reviewed-by: NYue Haibing <yuehaibing@huawei.com> Reviewed-by: NXiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: NYongqiang Liu <liuyongqiang13@huawei.com>
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