[PATCH 4.19 17/95] net/mlx4_core: fix a memory leak bug.

From: Greg Kroah-Hartman
Date: Mon Jun 01 2020 - 14:03:30 EST


From: Qiushi Wu <wu000273@xxxxxxx>

commit febfd9d3c7f74063e8e630b15413ca91b567f963 upstream.

In function mlx4_opreq_action(), pointer "mailbox" is not released,
when mlx4_cmd_box() return and error, causing a memory leak bug.
Fix this issue by going to "out" label, mlx4_free_cmd_mailbox() can
free this pointer.

Fixes: fe6f700d6cbb ("net/mlx4_core: Respond to operation request by firmware")
Signed-off-by: Qiushi Wu <wu000273@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/net/ethernet/mellanox/mlx4/fw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -2731,7 +2731,7 @@ void mlx4_opreq_action(struct work_struc
if (err) {
mlx4_err(dev, "Failed to retrieve required operation: %d\n",
err);
- return;
+ goto out;
}
MLX4_GET(modifier, outbox, GET_OP_REQ_MODIFIER_OFFSET);
MLX4_GET(token, outbox, GET_OP_REQ_TOKEN_OFFSET);