diff options
author | Prabhakar Kushwaha <pkushwaha@marvell.com> | 2021-10-19 11:22:12 +0300 |
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committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-10-20 02:17:44 +0300 |
commit | 60fab1076636493cfa2686e712446595fe43bc16 (patch) | |
tree | 3a89aa81b75345e259e33f8aafdd715dc3ff353d /drivers/infiniband/hw/qedr/verbs.c | |
parent | 663991f32857b3b63c94c97de9dbb0ec8600144f (diff) | |
download | linux-60fab1076636493cfa2686e712446595fe43bc16.tar.xz |
rdma/qedr: Fix crash due to redundant release of device's qp memory
Device's QP memory should only be allocated and released by IB layer.
This patch removes the redundant release of the device's qp memory and
uses completion APIs to make sure that .destroy_qp() only return, when qp
reference becomes 0.
Fixes: 514aee660df4 ("RDMA: Globally allocate and release QP memory")
Link: https://lore.kernel.org/r/20211019082212.7052-1-pkushwaha@marvell.com
Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: Alok Prasad <palok@marvell.com>
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/qedr/verbs.c')
-rw-r--r-- | drivers/infiniband/hw/qedr/verbs.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c index 3fbf172dbbef..dcb3653db72d 100644 --- a/drivers/infiniband/hw/qedr/verbs.c +++ b/drivers/infiniband/hw/qedr/verbs.c @@ -1357,6 +1357,7 @@ static void qedr_set_common_qp_params(struct qedr_dev *dev, if (rdma_protocol_iwarp(&dev->ibdev, 1)) { kref_init(&qp->refcnt); init_completion(&qp->iwarp_cm_comp); + init_completion(&qp->qp_rel_comp); } qp->pd = pd; @@ -2857,8 +2858,10 @@ int qedr_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata) qedr_free_qp_resources(dev, qp, udata); - if (rdma_protocol_iwarp(&dev->ibdev, 1)) + if (rdma_protocol_iwarp(&dev->ibdev, 1)) { qedr_iw_qp_rem_ref(&qp->ibqp); + wait_for_completion(&qp->qp_rel_comp); + } return 0; } |