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RDMA/mlx5: Fix query_srq_cmd() function

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The output buffer used in mlx5_cmd_exec_inout() was wrongly changed from
pre-allocated srq_out pointer to an input "out" point. That leads to
unpredictable results in the get_srqc() call later.

Fixes: 31578defe4 ("RDMA/mlx5: Update mlx5_ib to use new cmd interface")
Link: https://lore.kernel.org/r/20200513100809.246315-1-leon@kernel.org
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Leon Romanovsky 2020-05-13 13:08:09 +03:00 committed by Jason Gunthorpe
parent f29de9eee7
commit 59dde4d19c
1 changed files with 3 additions and 3 deletions
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6
drivers/infiniband/hw/mlx5/srq_cmd.c
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@ -169,16 +169,16 @@ static int query_srq_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
MLX5_SET(query_srq_in, in, opcode, MLX5_CMD_OP_QUERY_SRQ);
MLX5_SET(query_srq_in, in, srqn, srq->srqn);
err = mlx5_cmd_exec_inout(dev->mdev, query_srq, in, out);
err = mlx5_cmd_exec_inout(dev->mdev, query_srq, in, srq_out);
if (err)
goto out;
srqc = MLX5_ADDR_OF(query_srq_out, out, srq_context_entry);
srqc = MLX5_ADDR_OF(query_srq_out, srq_out, srq_context_entry);
get_srqc(srqc, out);
if (MLX5_GET(srqc, srqc, state) != MLX5_SRQC_STATE_GOOD)
out->flags |= MLX5_SRQ_FLAG_ERR;
out:
kvfree(out);
kvfree(srq_out);
return err;
}