This is a note to let you know that I've just added the patch titled
RDMA/qedr: Fix resource leak in qedr_create_qp
to the 5.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-qedr-fix-resource-leak-in-qedr_create_qp.patch
and it can be found in the queue-5.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit cda407b199054bfd554ad7154d09e43482049817
Author: Keita Suzuki <keitasuzuki.park@xxxxxxxxxxxxxxxxxxxx>
Date: Fri Sep 11 12:51:59 2020 +0000
RDMA/qedr: Fix resource leak in qedr_create_qp
[ Upstream commit 3e45410fe3c202ffb619f301beff0644f717e132 ]
When xa_insert() fails, the acquired resource in qedr_create_qp should
also be freed. However, current implementation does not handle the error.
Fix this by adding a new goto label that calls qedr_free_qp_resources.
Fixes: 1212767e23bb ("qedr: Add wrapping generic structure for qpidr and adjust idr routines.")
Link: https://lore.kernel.org/r/20200911125159.4577-1-keitasuzuki.park@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Keita Suzuki <keitasuzuki.park@xxxxxxxxxxxxxxxxxxxx>
Acked-by: Michal Kalderon <michal.kalderon@xxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index 820e351277d1b..41813e9d771ff 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -2113,6 +2113,28 @@ static int qedr_create_kernel_qp(struct qedr_dev *dev,
return rc;
}
+static int qedr_free_qp_resources(struct qedr_dev *dev, struct qedr_qp *qp,
+ struct ib_udata *udata)
+{
+ struct qedr_ucontext *ctx =
+ rdma_udata_to_drv_context(udata, struct qedr_ucontext,
+ ibucontext);
+ int rc;
+
+ if (qp->qp_type != IB_QPT_GSI) {
+ rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
+ if (rc)
+ return rc;
+ }
+
+ if (qp->create_type == QEDR_QP_CREATE_USER)
+ qedr_cleanup_user(dev, ctx, qp);
+ else
+ qedr_cleanup_kernel(dev, qp);
+
+ return 0;
+}
+
struct ib_qp *qedr_create_qp(struct ib_pd *ibpd,
struct ib_qp_init_attr *attrs,
struct ib_udata *udata)
@@ -2159,19 +2181,21 @@ struct ib_qp *qedr_create_qp(struct ib_pd *ibpd,
rc = qedr_create_kernel_qp(dev, qp, ibpd, attrs);
if (rc)
- goto err;
+ goto out_free_qp;
qp->ibqp.qp_num = qp->qp_id;
if (rdma_protocol_iwarp(&dev->ibdev, 1)) {
rc = xa_insert(&dev->qps, qp->qp_id, qp, GFP_KERNEL);
if (rc)
- goto err;
+ goto out_free_qp_resources;
}
return &qp->ibqp;
-err:
+out_free_qp_resources:
+ qedr_free_qp_resources(dev, qp, udata);
+out_free_qp:
kfree(qp);
return ERR_PTR(-EFAULT);
@@ -2672,28 +2696,6 @@ int qedr_query_qp(struct ib_qp *ibqp,
return rc;
}
-static int qedr_free_qp_resources(struct qedr_dev *dev, struct qedr_qp *qp,
- struct ib_udata *udata)
-{
- struct qedr_ucontext *ctx =
- rdma_udata_to_drv_context(udata, struct qedr_ucontext,
- ibucontext);
- int rc;
-
- if (qp->qp_type != IB_QPT_GSI) {
- rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
- if (rc)
- return rc;
- }
-
- if (qp->create_type == QEDR_QP_CREATE_USER)
- qedr_cleanup_user(dev, ctx, qp);
- else
- qedr_cleanup_kernel(dev, qp);
-
- return 0;
-}
-
int qedr_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata)
{
struct qedr_qp *qp = get_qedr_qp(ibqp);
