On Thu, 13 Mar 2025 16:20:17 +0200, Leon Romanovsky wrote:
> The ib_post_receive_mads() function handles posting receive work
> requests (WRs) to MAD QPs and is called in two cases:
> 1) When a MAD port is opened.
> 2) When a receive WQE is consumed upon receiving a new MAD.
>
> Whereas, if MADs arrive during the port open phase, a race condition
> might cause an extra WR to be posted, exceeding the QP’s capacity.
> This leads to failures such as:
> infiniband mlx5_0: ib_post_recv failed: -12
> infiniband mlx5_0: Couldn't post receive WRs
> infiniband mlx5_0: Couldn't start port
> infiniband mlx5_0: Couldn't open port 1
>
> [...]
Applied, thanks!
[1/1] IB/mad: Check available slots before posting receive WRs
https://git.kernel.org/rdma/rdma/c/37826f0a8c2f6b
Best regards,
--
Leon Romanovsky <leon@xxxxxxxxxx>
