From 32927e281c004c352c0b88d2975f5511e5b7cf8e Mon Sep 17 00:00:00 2001 From: Mark Bloch Date: Tue, 20 Mar 2018 15:45:37 +0200 Subject: IB/mlx5: Don't clean uninitialized UMR resources In case we failed to create UMR resources, mark them as invalid so we won't try to destroy them on the unwind path. Add the relevant checks to destroy_umrc_res(), this is done for the unlikely event ib_register_device() or create_umr_res() err out and we try to destroy invalid objects. Fixes: 42cea83f9524 ("IB/mlx5: Fix cleanup order on unload") Signed-off-by: Mark Bloch Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/mlx5/main.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'drivers/infiniband/hw/mlx5/main.c') diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index da091de..7f8bda3 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -3448,9 +3448,12 @@ static void destroy_umrc_res(struct mlx5_ib_dev *dev) if (err) mlx5_ib_warn(dev, "mr cache cleanup failed\n"); - mlx5_ib_destroy_qp(dev->umrc.qp); - ib_free_cq(dev->umrc.cq); - ib_dealloc_pd(dev->umrc.pd); + if (dev->umrc.qp) + mlx5_ib_destroy_qp(dev->umrc.qp); + if (dev->umrc.cq) + ib_free_cq(dev->umrc.cq); + if (dev->umrc.pd) + ib_dealloc_pd(dev->umrc.pd); } enum { @@ -3552,12 +3555,15 @@ static int create_umr_res(struct mlx5_ib_dev *dev) error_4: mlx5_ib_destroy_qp(qp); + dev->umrc.qp = NULL; error_3: ib_free_cq(cq); + dev->umrc.cq = NULL; error_2: ib_dealloc_pd(pd); + dev->umrc.pd = NULL; error_0: kfree(attr); -- cgit v1.1