Hey Leon, I'm running a kernel-mode rdma program over mlx5/cx4 and I see this error cqe on the first WR chain I post. The chain is a 4K WRITE + 16B SEND. [338633.350428] 00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [338633.357689] 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [338633.364935] 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [338633.372165] 00000030: 00 00 00 00 00 00 88 13 08 00 08 b6 00 00 01 d2 [338633.379392] mlx5_poll_one: mlx5_1:mlx5_poll_one:616:(pid 597): Requestor error cqe on cqn 0x815: [338633.379393] mlx5_poll_one: mlx5_1:mlx5_poll_one:618:(pid 597): syndrome 0x13, vendor syndrome 0x88 Syndrome 0x13 is MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR. Do you know what vendor syndrome 0x88 tells me? Any ideas? Thanks! Steve. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html