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    Subject[PATCH 4.9 10/61] net/mlx4_core: fix a memory leak bug.
    Date
    From: Qiushi Wu <wu000273@umn.edu>

    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@umn.edu>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    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
    @@ -2704,7 +2704,7 @@ 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);

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