Merge pull request #1470 from zengyijing/fix_mlx5_cq_deadlock

fix potential CQ deadlock in mlx5 provider
linux-rdma · Jun 10, 2024 · ed63376 · ed63376
2 parents 1840c1b + e677dc6
commit ed63376
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/providers/mlx5/cq.c b/providers/mlx5/cq.c
@@ -1163,8 +1163,11 @@ static inline int mlx5_start_poll(struct ibv_cq_ex *ibcq, struct ibv_poll_cq_att
  goto out;
  }
 
- if (clock_update && !err)
+ if (clock_update && !err) {
  err = mlx5dv_get_clock_info(ibcq->context, &cq->last_clock_info);
+ if (lock && err)
+ mlx5_spin_unlock(&cq->lock);
+ }
 
 out:
  return err;