[PATCH for v4.9 LTS 10/87] net/mlx4_core: Use-after-free causes a resource leak in flow-steering detach

From: Jack Morgenstein [ Upstream commit 3b01fe7f91c8e4f9afc4fae3c5af72c14958d2d8 ] mlx4_QP_FLOW_STEERING_DETACH_wrapper first removes the steering rule (which results in freeing the rule structure), and then references a field in this struct (the qp number) when

[PATCH for v4.9 LTS 10/87] net/mlx4_core: Use-after-free causes a resource leak in flow-steering detach

From: Jack Morgenstein [ Upstream commit 3b01fe7f91c8e4f9afc4fae3c5af72c14958d2d8 ] mlx4_QP_FLOW_STEERING_DETACH_wrapper first removes the steering rule (which results in freeing the rule structure), and then references a field in this struct (the qp number) when releasing the busy-status on