From: Colin Ian King colin.king@canonical.com
mainline inclusion from mainline-master commit 030c8198d744e4149da57bd2a73b87aa6a8aa272 category: feature bugzilla: 173966 CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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In the unlikely event that rule_cnt is zero the variable ret is not assigned a value and function hclge_dbg_dump_fd_tcam can end up returning an unitialized value in ret. Fix this by explicitly setting ret to zero before the for-loop.
Addresses-Coverity: ("Uninitialized scalar variable") Fixes: b5a0b70d77b9 ("net: hns3: refactor dump fd tcam of debugfs") Signed-off-by: Colin Ian King colin.king@canonical.com Signed-off-by: David S. Miller davem@davemloft.net Reviewed-by: Yongxin Li liyongxin1@huawei.com Signed-off-by: Junxin Chen chenjunxin1@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c index dd9eb6e6f5a7..0b7c6838d905 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c @@ -1519,6 +1519,7 @@ static int hclge_dbg_dump_fd_tcam(struct hclge_dev *hdev, char *buf, int len) goto out; }
+ ret = 0; for (i = 0; i < rule_cnt; i++) { tcam_msg.stage = HCLGE_FD_STAGE_1; tcam_msg.loc = rule_locs[i];